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1. general description the 74hc138; 74hct138 is a high-speed si-gate cmos device and is pin compatible with low-power schottky ttl (lsttl). the 74hc138; 74hct138 decoder accepts three binary weighted address inputs (a0, a1 and a3) and when enabled, provides 8 mutually exclusive active low outputs ( y0 to y7). the 74hc138; 74hct138 features three enable inputs: two active low ( e1 and e2) and one active high (e3). every output will be high unless e1 and e2 are low and e3 is high. this multiple enable function allows easy parallel expansion of the 74hc138; 74hct138 to a 1-of-32 (5 lines to 32 lines) decoder with just four 74hc138; 74hct138 ics and one inverter. the 74hc138; 74hct138 can be used as an eight output demultiplexer by using one of the active low enable inputs as the data input and the remaining enable inputs as strobes. not used enable inputs must be permanently tied to their appropriate active high- or low-state. the 74hc138; 74hct138 is identical to the 74hc238; 74hct238 but has inverting outputs. 2. features n demultiplexing capability n multiple input enable for easy expansion n complies with jedec standard no. 7a n ideal for memory chip select decoding n active low mutually exclusive outputs n esd protection: u hbm eia/jesd22-a114-c exceeds 2000 v u mm eia/jesd22-a115-a exceeds 200 v n speci?ed from - 40 cto+85 c and from - 40 c to +125 c 74hc138; 74hct138 3-to-8 line decoder/demultiplexer; inverting rev. 03 23 december 2005 product data sheet
74hc_hct138_3 ? koninklijke philips electronics n.v. 2005. all rights reserved. product data sheet rev. 03 23 december 2005 2 of 23 philips semiconductors 74hc138; 74hct138 3-to-8 line decoder/demultiplexer; inverting 3. quick reference data [1] c pd is used to determine the dynamic power dissipation (p d in m w). p d =c pd v cc 2 f i n+ s (c l v cc 2 f o ) where: f i = input frequency in mhz; f o = output frequency in mhz; c l = output load capacitance in pf; v cc = supply voltage in v; n = number of inputs switching; s (c l v cc 2 f o ) = sum of the outputs. 4. ordering information table 1: quick reference data gnd = 0 v; t amb = 25 c; t r = t f = 6 ns. symbol parameter conditions min typ max unit 74hc138 t phl , t plh propagation delay v cc =5v; c l =15pf an to yn - 12 - ns e3 to yn - 14 - ns en to yn - 14 - ns c i input capacitance - 3.5 - pf c pd power dissipation capacitance v i = gnd to v cc [1] -67-pf 74hct138 t phl , t plh propagation delay v cc =5v; c l =15pf an to yn - 17 - ns e3 to yn - 19 - ns en to yn - 19 - ns c i input capacitance - 3.5 - pf c pd power dissipation capacitance v i = gnd to (v cc - 1.5 v) [1] -67-pf table 2: ordering information type number package temperature range name description version 74hc138 74hc138n - 40 c to +125 c dip16 plastic dual in-line package; 16 leads (300 mil); long body sot38-1 74hc138d - 40 c to +125 c so16 plastic small outline package; 16 leads; body width 3.9 mm sot109-1 74hc138db - 40 c to +125 c ssop16 plastic shrink small outline package; 16 leads; body width 5.3 mm sot338-1 74hc138pw - 40 c to +125 c tssop16 plastic thin shrink small outline package; 16 leads; body width 4.4 mm sot403-1 74hc138bq - 40 c to +125 c dhvqfn16 plastic dual in-line compatible thermal enhanced very thin quad ?at package; no leads; 16 terminals; body 2.5 3.5 0.85 mm sot763-1
74hc_hct138_3 ? koninklijke philips electronics n.v. 2005. all rights reserved. product data sheet rev. 03 23 december 2005 3 of 23 philips semiconductors 74hc138; 74hct138 3-to-8 line decoder/demultiplexer; inverting 5. functional diagram 74hct138 74hct138n - 40 c to +125 c dip16 plastic dual in-line package; 16 leads (300 mil); long body sot38-1 74 hct138d - 40 c to +125 c so16 plastic small outline package; 16 leads; body width 3.9 mm sot109-1 74hct138db - 40 c to +125 c ssop16 plastic shrink small outline package; 16 leads; body width 5.3 mm sot338-1 74hct138pw - 40 c to +125 c tssop16 plastic thin shrink small outline package; 16 leads; body width 4.4 mm sot403-1 74hct138bq - 40 c to +125 c dhvqfn16 plastic dual in-line compatible thermal enhanced very thin quad ?at package; no leads; 16 terminals; body 2.5 3.5 0.85 mm sot763-1 table 2: ordering information continued type number package temperature range name description version fig 1. logic symbol fig 2. functional diagram y0 y1 y2 y3 y4 y5 y6 y7 7 9 10 11 12 13 14 15 a0 a1 a2 3 2 1 6 5 4 e2 e1 e3 mna370 mna372 enable exiting y0 y1 y2 y3 y4 y5 y6 y7 7 9 10 11 12 13 14 15 a0 a1 a2 3-to-8 decoder 3 2 1 6 5 4 e2 e1 e3
74hc_hct138_3 ? koninklijke philips electronics n.v. 2005. all rights reserved. product data sheet rev. 03 23 december 2005 4 of 23 philips semiconductors 74hc138; 74hct138 3-to-8 line decoder/demultiplexer; inverting 6. pinning information 6.1 pinning fig 3. logic diagram 001aae059 y6 y7 e1 e2 e3 a0 a1 a2 y4 y5 y2 y3 y0 y1 (1) the die substrate is attached to this pad using conductive die attach material. it can not be used as supply pin or input. fig 4. pin con?guration dip16, so16, ssop16 and tssop16 fig 5. pin con?guration dhvqfn16 74hc138 74hct138 a0 v cc a1 y0 a2 y1 e1 y2 e2 y3 e3 y4 y7 y5 gnd y6 001aae061 1 2 3 4 5 6 7 8 10 9 12 11 14 13 16 15 001aae060 74hc138bq 74hct138bq y7 y5 e3 y4 e2 y3 e1 y2 a2 y1 a1 y0 gnd y6 a0 v cc transparent top view 7 10 6 11 5 12 4 13 3 14 2 15 8 9 1 16 terminal 1 index area gnd (1)
74hc_hct138_3 ? koninklijke philips electronics n.v. 2005. all rights reserved. product data sheet rev. 03 23 december 2005 5 of 23 philips semiconductors 74hc138; 74hct138 3-to-8 line decoder/demultiplexer; inverting 6.2 pin description 7. functional description [1] h = high voltage level; l = low voltage level; x = dont care. table 3: pin description symbol pin description a0 1 address input 0 a1 2 address input 1 a2 3 address input 2 e1 4 enable input 1 (active low) e2 5 enable input 2 (active low) e3 6 enable input 3 (active high) y7 7 output 7 (active low) gnd 8 ground (0 v) y6 9 output 6 (active low) y5 10 output 5 (active low) y4 11 output 4 (active low) y3 12 output 3 (active low) y2 13 output 2 (active low) y1 14 output 1 (active low) y0 15 output 0 (active low) v cc 16 positive supply voltage table 4: function table [1] control input output e1 e2 e3 a2 a1 a0 y7 y6 y5 y4 y3 y2 y1 y0 h x x x x x hhhhhhhh xhx xxl l l h l l l hhhhhhhl l l h hhhhhhl h l h l hhhhhl hh l h h hhhhl hhh h l l hhhl hhhh h l h hhl hhhhh h h l hl hhhhhh h h h l hhhhhhh
74hc_hct138_3 ? koninklijke philips electronics n.v. 2005. all rights reserved. product data sheet rev. 03 23 december 2005 6 of 23 philips semiconductors 74hc138; 74hct138 3-to-8 line decoder/demultiplexer; inverting 8. limiting values [1] for dip16 package: p tot derates linearly with 12 mw/k above 70 c. [2] for so16 package: p tot derates linearly with 8 mw/k above 70 c. [3] for ssop16 and tssop16 packages: p tot derates linearly with 5.5 mw/k above 60 c. [4] for dhvqfn16 packages: p tot derates linearly with 4.5 mw/k above 60 c. 9. recommended operating conditions table 5: limiting values in accordance with the absolute maximum rating system (iec 60134). voltages are referenced to gnd (ground = 0 v). symbol parameter conditions min max unit v cc supply voltage - 0.5 +7 v i ik input clamping current v i < - 0.5 v or v i >v cc + 0.5 v - 20 ma i ok output clamping current v o < - 0.5 v or v o >v cc + 0.5 v - 20 ma i o output current v o = - 0.5 v to (v cc + 0.5 v) - 25 ma i cc quiescent supply current - 50 ma i gnd ground current - - 50 ma t stg storage temperature - 65 +150 c p tot total power dissipation dip16 package [1] - 750 mw so16 package [2] - 500 mw ssop16 package [3] - 500 mw tssop16 package [3] - 500 mw dhvqfn16 package [4] - 500 mw table 6: recommended operating conditions symbol parameter conditions min typ max unit 74hc138 v cc supply voltage 2.0 5.0 6.0 v v i input voltage 0 - v cc v v o output voltage 0 - v cc v t amb ambient temperature - 40 +25 +125 c t r , t f input rise and fall time v cc = 2.0 v - - 1000 ns v cc = 4.5 v - 6.0 500 ns v cc = 6.0 v - - 400 ns 74hct138 v cc supply voltage 4.5 5.0 5.5 v v i input voltage 0 - v cc v v o output voltage 0 - v cc v t amb ambient temperature - 40 +25 +125 c t r , t f input rise and fall time v cc = 4.5 v - 6.0 500 ns
74hc_hct138_3 ? koninklijke philips electronics n.v. 2005. all rights reserved. product data sheet rev. 03 23 december 2005 7 of 23 philips semiconductors 74hc138; 74hct138 3-to-8 line decoder/demultiplexer; inverting 10. static characteristics table 7: static characteristics 74hc138 at recommended operating conditions; voltages are referenced to gnd (ground = 0 v). symbol parameter conditions min typ max unit t amb =25 c v ih high-state input voltage v cc = 2.0 v 1.5 1.2 - v v cc = 4.5 v 3.15 2.4 - v v cc = 6.0 v 4.2 3.2 - v v il low-state input voltage v cc = 2.0 v - 0.8 0.5 v v cc = 4.5 v - 2.1 1.35 v v cc = 6.0 v - 2.8 1.8 v v oh high-state output voltage v i = v ih or v il i o = - 20 m a; v cc = 2.0 v 1.9 2.0 - v i o = - 20 m a; v cc = 4.5 v 4.4 4.5 - v i o = - 20 m a; v cc = 6.0 v 5.9 6.0 - v i o = - 4.0 ma; v cc = 4.5 v 3.98 4.32 - v i o = - 5.2 ma; v cc = 6 v 5.48 5.81 - v v ol low-state output voltage v i = v ih or v il i o =20 m a; v cc = 2.0 v - 0 0.1 v i o =20 m a; v cc = 4.5 v - 0 0.1 v i o =20 m a; v cc = 6.0 v - 0 0.1 v i o = 4.0 ma; v cc = 4.5 v - 0.15 0.26 v i o = 5.2 ma; v cc = 6 v - 0.16 0.26 v i li input leakage current v i =v cc or gnd; v cc = 6 v - - 0.1 m a i oz off-state output current v i = v ih or v il ; v o =v cc or gnd; v cc = 6.0 v 0.5 m a i cc quiescent supply current v cc = 6.0 v; i o = 0 a; v i =v cc or gnd - - 8.0 m a c i input capacitance - 3.5 - pf t amb = - 40 c to +85 c v ih high-state input voltage v cc = 2.0 v 1.5 - - v v cc = 4.5 v 3.15 - - v v cc = 6.0 v 4.2 - - v v il low-state input voltage v cc = 2.0 v - - 0.5 v v cc = 4.5 v - - 1.35 v v cc = 6.0 v - - 1.8 v v oh high-state output voltage v i = v ih or v il i o = - 20 m a; v cc = 2.0 v 1.9 - - v i o = - 20 m a; v cc = 4.5 v 4.4 - - v i o = - 20 m a; v cc = 6.0 v 5.9 - - v i o = - 4.0 ma; v cc = 4.5 v 3.84 - - v i o = - 5.2 ma; v cc = 6 v 5.34 - - v
74hc_hct138_3 ? koninklijke philips electronics n.v. 2005. all rights reserved. product data sheet rev. 03 23 december 2005 8 of 23 philips semiconductors 74hc138; 74hct138 3-to-8 line decoder/demultiplexer; inverting v ol low-state output voltage v i = v ih or v il i o =20 m a; v cc = 2.0 v - - 0.1 v i o =20 m a; v cc = 4.5 v - - 0.1 v i o =20 m a; v cc = 6.0 v - - 0.1 v i o = 4.0 ma; v cc = 4.5 v - - 0.33 v i o = 5.2 ma; v cc = 6 v - - 0.33 v i li input leakage current v i =v cc or gnd; v cc = 6 v - - 1.0 m a i oz off-state output current v i = v ih or v il ; v o =v cc or gnd; v cc = 6.0 v 5.0 m a i cc quiescent supply current v cc = 6.0 v; i o = 0 a; v i =v cc or gnd --80 m a t amb = - 40 c to +125 c v ih high-state input voltage v cc = 2.0 v 1.5 - - v v cc = 4.5 v 3.15 - - v v cc = 6.0 v 4.2 - - v v il low-state input voltage v cc = 2.0 v - - 0.5 v v cc = 4.5 v - - 1.35 v v cc = 6.0 v - - 1.8 v v oh high-state output voltage v i = v ih or v il i o = - 20 m a; v cc = 2.0 v 1.9 - - v i o = - 20 m a; v cc = 4.5 v 4.4 - - v i o = - 20 m a; v cc = 6.0 v 5.9 - - v i o = - 4.0 ma; v cc = 4.5 v 3.7 - - v i o = - 5.2 ma; v cc = 6 v 5.2 - - v v ol low-state output voltage v i = v ih or v il i o =20 m a; v cc = 2.0 v - - 0.1 v i o =20 m a; v cc = 4.5 v - - 0.1 v i o =20 m a; v cc = 6.0 v - - 0.1 v i o = 4.0 ma; v cc = 4.5 v - - 0.4 v i o = 5.2 ma; v cc = 6 v - - 0.4 v i li input leakage current v i =v cc or gnd; v cc = 6 v - - 1.0 m a i oz off-state output current v i = v ih or v il ; v o =v cc or gnd; v cc = 6.0 v 10.0 m a i cc quiescent supply current v cc = 6.0 v; i o = 0 a; v i =v cc or gnd - - 160 m a table 7: static characteristics 74hc138 continued at recommended operating conditions; voltages are referenced to gnd (ground = 0 v). symbol parameter conditions min typ max unit
74hc_hct138_3 ? koninklijke philips electronics n.v. 2005. all rights reserved. product data sheet rev. 03 23 december 2005 9 of 23 philips semiconductors 74hc138; 74hct138 3-to-8 line decoder/demultiplexer; inverting table 8: static characteristics 74hct138 at recommended operating conditions; voltages are referenced to gnd (ground = 0 v). symbol parameter conditions min typ max unit t amb =25 c v ih high-state input voltage v cc = 4.5 v to 5.5 v 2.0 1.6 - v v il low-state input voltage v cc = 4.5 v to 5.5 v - 1.2 0.8 v v oh high-state output voltage v i = v ih or v il i o = - 20 m a; v cc = 4.5 v 4.4 4.5 - v i o = - 4.0 ma; v cc = 4.5 v 3.98 4.32 - v v ol low-state output voltage v i = v ih or v il i o =20 m a; v cc = 4.5 v - 0.0 0.1 v i o = 4.0 ma; v cc = 4.5 v - 0.15 0.26 v i li input leakage current v i =v cc or gnd; v cc = 5.5 v - - 0.1 m a i oz off-state output current v i = v ih or v il ; v cc = 5.5 v; v o =v cc or gnd; i o = 0 a -- 0.5 m a i cc quiescent supply current v cc = 6.0 v; i o = 0 a; v i =v cc or gnd - - 8.0 m a d i cc additional quiescent supply current per input pin; v i =v cc - 2.1 v; other inputs at v cc or gnd; v cc = 4.5 v to 5.5 v; i o =0a pin an - 150 540 m a pin en - 125 450 m a pin e3 - 100 360 m a c i input capacitance - 3.5 - pf t amb = - 40 c to +85 c v ih high-state input voltage v cc = 4.5 to 5.5 v 2.0 - - v v il low-state input voltage v cc = 4.5 to 5.5 v - - 0.8 v v oh high-state output voltage v i = v ih or v il i o = - 20 m a; v cc = 4.5 v 4.4 - - v i o = - 4.0 ma; v cc = 4.5 v 3.84 - - v v ol low-state output voltage v i = v ih or v il i o =20 m a; v cc = 4.5 v - - 0.1 v i o = 4.0 ma; v cc = 4.5 v - - 0.33 v i li input leakage current v i =v cc or gnd; v cc = 5.5 v - - 1.0 m a i oz off-state output current v i = v ih or v il ; v cc = 5.5 v; v o =v cc or gnd; i o = 0 a -- 5.0 m a i cc quiescent supply current v cc = 5.5 v; i o = 0 a; v i =v cc or gnd --80 m a d i cc additional quiescent supply current per input pin; v i =v cc - 2.1 v; other inputs at v cc or gnd; v cc = 4.5 v to 5.5 v; i o =0a pin an - - 675 m a pin en - - 562.5 m a pin e3 - - 450 m a
74hc_hct138_3 ? koninklijke philips electronics n.v. 2005. all rights reserved. product data sheet rev. 03 23 december 2005 10 of 23 philips semiconductors 74hc138; 74hct138 3-to-8 line decoder/demultiplexer; inverting t amb = - 40 c to +125 c v ih high-state input voltage v cc = 4.5 v to 5.5 v 2.0 - - v v il low-state input voltage v cc = 4.5 v to 5.5 v - - 0.8 v v oh high-state output voltage v i = v ih or v il i o = - 20 m a; v cc = 4.5 v 4.4 - - v i o = - 4.0 ma; v cc = 4.5 v 3.7 - - v v ol low-state output voltage v i = v ih or v il i o =20 m a; v cc = 4.5 v - - 0.1 v i o = 4.0 ma; v cc = 4.5 v - - 0.4 v i li input leakage current v i =v cc or gnd; v cc = 5.5 v - - 1.0 m a i oz off-state output current v i = v ih or v il ; v cc = 5.5 v; v o =v cc or gnd; i o = 0 a -- 10.0 m a i cc quiescent supply current v cc = 5.5 v; i o = 0 a; v i =v cc or gnd - - 160 m a d i cc additional quiescent supply current per input pin; v i =v cc - 2.1 v; other inputs at v cc or gnd; v cc = 4.5 v to 5.5 v; i o =0a pin an - - 735 m a pin en - - 612.5 m a pin e3 - - 490 m a table 8: static characteristics 74hct138 continued at recommended operating conditions; voltages are referenced to gnd (ground = 0 v). symbol parameter conditions min typ max unit
74hc_hct138_3 ? koninklijke philips electronics n.v. 2005. all rights reserved. product data sheet rev. 03 23 december 2005 11 of 23 philips semiconductors 74hc138; 74hct138 3-to-8 line decoder/demultiplexer; inverting 11. dynamic characteristics table 9: dynamic characteristics 74hc138 voltages are referenced to gnd (ground = 0 v); c l = 50 pf unless otherwise speci?ed. for test circuit see figure 8 . symbol parameter conditions min typ max unit t amb =25 c t phl , t plh propagation delay an to yn see figure 6 v cc = 2.0 v - 41 150 ns v cc = 4.5 v - 15 30 ns v cc =5v;c l = 15 pf - 12 - ns v cc = 6.0 v - 12 26 ns e3 to yn see figure 6 v cc = 2.0 v - 47 150 ns v cc = 4.5 v - 17 30 ns v cc =5v;c l = 15 pf - 14 - ns v cc = 6.0 v - 14 26 ns en to yn see figure 7 v cc = 2.0 v - 47 150 ns v cc = 4.5 v - 17 30 ns v cc =5v;c l = 15 pf - 14 - ns v cc = 6.0 v - 14 26 ns t thl , t tlh output transition time see figure 6 and 7 v cc = 2.0 v - 19 75 ns v cc = 4.5 v - 7 15 ns v cc = 6.0 v - 6 13 ns c pd power dissipation capacitance v i = gnd to v cc [1] -67-pf t amb = - 40 c to +85 c t phl , t plh propagation delay an to yn see figure 6 v cc = 2.0 v - - 190 ns v cc = 4.5 v - - 38 ns v cc = 6.0 v - - 33 ns e3 to yn see figure 6 v cc = 2.0 v - - 190 ns v cc = 4.5 v - - 38 ns v cc = 6.0 v - - 33 ns en to yn see figure 7 v cc = 2.0 v - - 190 ns v cc = 4.5 v - - 38 ns v cc = 6.0 v - - 33 ns
74hc_hct138_3 ? koninklijke philips electronics n.v. 2005. all rights reserved. product data sheet rev. 03 23 december 2005 12 of 23 philips semiconductors 74hc138; 74hct138 3-to-8 line decoder/demultiplexer; inverting [1] c pd is used to determine the dynamic power dissipation (p d in m w). p d =c pd v cc 2 f i n+ s (c l v cc 2 f o ) where: f i = input frequency in mhz; f o = output frequency in mhz; c l = output load capacitance in pf; v cc = supply voltage in v; n = number of inputs switching; s (c l v cc 2 f o ) = sum of the outputs. t thl , t tlh output transition time see figure 6 and 7 v cc = 2.0 v - - 95 ns v cc = 4.5 v - - 19 ns v cc = 6.0 v - - 16 ns t amb = - 40 c to +125 c t phl , t plh propagation delay an to yn see figure 6 v cc = 2.0 v - - 225 ns v cc = 4.5 v - - 45 ns v cc = 6.0 v - - 38 ns e3 to yn see figure 6 v cc = 2.0 v - - 225 ns v cc = 4.5 v - - 45 ns v cc = 6.0 v - - 38 ns en to yn see figure 7 v cc = 2.0 v - - 225 ns v cc = 4.5 v - - 45 ns v cc = 6.0 v - - 38 ns t thl , t tlh output transition time see figure 6 and 7 v cc = 2.0 v - - 110 ns v cc = 4.5 v - - 22 ns v cc = 6.0 v - - 19 ns table 9: dynamic characteristics 74hc138 continued voltages are referenced to gnd (ground = 0 v); c l = 50 pf unless otherwise speci?ed. for test circuit see figure 8 . symbol parameter conditions min typ max unit
74hc_hct138_3 ? koninklijke philips electronics n.v. 2005. all rights reserved. product data sheet rev. 03 23 december 2005 13 of 23 philips semiconductors 74hc138; 74hct138 3-to-8 line decoder/demultiplexer; inverting [1] c pd is used to determine the dynamic power dissipation (p d in m w). p d =c pd v cc 2 f i n+ s (c l v cc 2 f o ) where: f i = input frequency in mhz; f o = output frequency in mhz; c l = output load capacitance in pf; table 10: dynamic characteristics 74hct138 voltages are referenced to gnd (ground = 0 v); c l = 50 pf unless otherwise speci?ed. for test circuit see figure 8 . symbol parameter conditions min typ max unit t amb =25 c t phl , t plh propagation delay an to yn see figure 6 v cc = 4.5 v - 20 35 ns v cc = 5 v; c l =15pf - 17 - ns e3 to yn see figure 6 v cc = 4.5 v - 18 40 ns v cc = 5 v; c l =15pf - 19 - ns en to yn see figure 7 v cc = 4.5 v - 19 40 ns v cc = 5 v; c l =15pf - 19 - ns t thl , t tlh output transition time see figure 6 and 7 v cc = 4.5 v - 7 15 ns c pd power dissipation capacitance v i = gnd to (v cc - 1.5 v) [1] -67-pf t amb = - 40 c to +85 c t phl , t plh propagation delay an to yn see figure 6 v cc = 4.5 v - - 44 ns e3 to yn see figure 6 v cc = 4.5 v - - 50 ns en to yn see figure 7 v cc = 4.5 v - - 50 ns t thl , t tlh output transition time see figure 6 and 7 v cc = 4.5 v - - 19 ns t amb = - 40 c to +125 c t phl , t plh propagation delay an to yn see figure 6 v cc = 4.5 v - - 53 ns e3 to yn see figure 6 v cc = 4.5 v - - 60 ns en to yn see figure 7 v cc = 4.5 v - - 60 ns t thl , t tlh output transition time see figure 6 and 7 v cc = 4.5 v - - 22 ns
74hc_hct138_3 ? koninklijke philips electronics n.v. 2005. all rights reserved. product data sheet rev. 03 23 december 2005 14 of 23 philips semiconductors 74hc138; 74hct138 3-to-8 line decoder/demultiplexer; inverting v cc = supply voltage in v; n = number of inputs switching; s (c l v cc 2 f o ) = sum of the outputs. 12. waveforms measurement points are given in t ab le 11 . v ol and v oh are typical voltage output drop that occur with the output load. fig 6. propagation delay input (an) and enable input (e3) to output ( yn) and transition time output ( yn) measurement points are given in t ab le 11 . v ol and v oh are typical voltage output drop that occur with the output load. fig 7. propagation delay enable input ( en) to output ( yn) and transition time output ( yn) table 11: measurement points type input output v m v m 74hc138 0.5v cc 0.5v cc 74hct138 1.3 v 1.3 v mna373 an, e3 input yn output t phl t thl t plh gnd v cc v m v m v oh v ol t tlh mna374 e1, e2 input yn output t phl t plh gnd v cc v m v m v oh v ol t thl t tlh
74hc_hct138_3 ? koninklijke philips electronics n.v. 2005. all rights reserved. product data sheet rev. 03 23 december 2005 15 of 23 philips semiconductors 74hc138; 74hct138 3-to-8 line decoder/demultiplexer; inverting test data is given in t ab le 12 . de?nitions test circuit: r t = termination resistance should be equal to output impedance z o of the pulse generator c l = load capacitance including jig and probe capacitance r l = load resistor s1 = test selection switch fig 8. load circuitry for measuring switching times table 12: test data type input load s1 position v i t r , t f c l r l t phl , t plh t pzh , t phz t pzl , t plz 74hc138 v cc 6 ns 15 pf, 50 pf 1 k w open gnd v cc 74hct138 3 v 6 ns 15 pf, 50 pf 1 k w open gnd v cc v m v m t w t w 10 % 90 % 0 v v i v i negative pulse positive pulse 0 v v m v m 90 % 10 % t f t r t r t f 001aad983 dut v cc v cc v i v o r t r l s1 c l open pulse generator
74hc_hct138_3 ? koninklijke philips electronics n.v. 2005. all rights reserved. product data sheet rev. 03 23 december 2005 16 of 23 philips semiconductors 74hc138; 74hct138 3-to-8 line decoder/demultiplexer; inverting 13. package outline fig 9. package outline sot38-1 (dip16) unit a max. 1 2 b 1 cee m h l references outline version european projection issue date iec jedec jeita mm inches dimensions (inch dimensions are derived from the original mm dimensions) sot38-1 99-12-27 03-02-13 a min. a max. b max. w m e e 1 1.40 1.14 0.055 0.045 0.53 0.38 0.32 0.23 21.8 21.4 0.86 0.84 6.48 6.20 0.26 0.24 3.9 3.4 0.15 0.13 0.254 2.54 7.62 0.3 8.25 7.80 0.32 0.31 9.5 8.3 0.37 0.33 2.2 0.087 4.7 0.51 3.7 0.15 0.021 0.015 0.013 0.009 0.01 0.1 0.02 0.19 050g09 mo-001 sc-503-16 m h c (e ) 1 m e a l seating plane a 1 w m b 1 e d a 2 z 16 1 9 8 b e pin 1 index 0 5 10 mm scale note 1. plastic or metal protrusions of 0.25 mm (0.01 inch) maximum per side are not included. (1) (1) d (1) z dip16: plastic dual in-line package; 16 leads (300 mil); long body sot38-1
74hc_hct138_3 ? koninklijke philips electronics n.v. 2005. all rights reserved. product data sheet rev. 03 23 december 2005 17 of 23 philips semiconductors 74hc138; 74hct138 3-to-8 line decoder/demultiplexer; inverting fig 10. package outline sot109-1 (so16) x w m q a a 1 a 2 b p d h e l p q detail x e z e c l v m a (a ) 3 a 8 9 1 16 y pin 1 index unit a max. a 1 a 2 a 3 b p cd (1) e (1) (1) eh e ll p qz y w v q references outline version european projection issue date iec jedec jeita mm inches 1.75 0.25 0.10 1.45 1.25 0.25 0.49 0.36 0.25 0.19 10.0 9.8 4.0 3.8 1.27 6.2 5.8 0.7 0.6 0.7 0.3 8 0 o o 0.25 0.1 dimensions (inch dimensions are derived from the original mm dimensions) note 1. plastic or metal protrusions of 0.15 mm (0.006 inch) maximum per side are not included. 1.0 0.4 sot109-1 99-12-27 03-02-19 076e07 ms-012 0.069 0.010 0.004 0.057 0.049 0.01 0.019 0.014 0.0100 0.0075 0.39 0.38 0.16 0.15 0.05 1.05 0.041 0.244 0.228 0.028 0.020 0.028 0.012 0.01 0.25 0.01 0.004 0.039 0.016 0 2.5 5 mm scale so16: plastic small outline package; 16 leads; body width 3.9 mm sot109-1
74hc_hct138_3 ? koninklijke philips electronics n.v. 2005. all rights reserved. product data sheet rev. 03 23 december 2005 18 of 23 philips semiconductors 74hc138; 74hct138 3-to-8 line decoder/demultiplexer; inverting fig 11. package outline sot403-1 (tssop16) unit a 1 a 2 a 3 b p cd (1) e (2) (1) eh e ll p qz y w v q references outline version european projection issue date iec jedec jeita mm 0.15 0.05 0.95 0.80 0.30 0.19 0.2 0.1 5.1 4.9 4.5 4.3 0.65 6.6 6.2 0.4 0.3 0.40 0.06 8 0 o o 0.13 0.1 0.2 1 dimensions (mm are the original dimensions) notes 1. plastic or metal protrusions of 0.15 mm maximum per side are not included. 2. plastic interlead protrusions of 0.25 mm maximum per side are not included. 0.75 0.50 sot403-1 mo-153 99-12-27 03-02-18 w m b p d z e 0.25 18 16 9 q a a 1 a 2 l p q detail x l (a ) 3 h e e c v m a x a y 0 2.5 5 mm scale tssop16: plastic thin shrink small outline package; 16 leads; body width 4.4 mm sot403-1 a max. 1.1 pin 1 index
74hc_hct138_3 ? koninklijke philips electronics n.v. 2005. all rights reserved. product data sheet rev. 03 23 december 2005 19 of 23 philips semiconductors 74hc138; 74hct138 3-to-8 line decoder/demultiplexer; inverting fig 12. package outline sot338-1 (ssop16) unit a 1 a 2 a 3 b p cd (1) e (1) eh e ll p qz y w v q references outline version european projection issue date iec jedec jeita mm 0.21 0.05 1.80 1.65 0.25 0.38 0.25 0.20 0.09 6.4 6.0 5.4 5.2 0.65 1.25 7.9 7.6 1.03 0.63 0.9 0.7 1.00 0.55 8 0 o o 0.13 0.2 0.1 dimensions (mm are the original dimensions) note 1. plastic or metal protrusions of 0.25 mm maximum per side are not included. sot338-1 99-12-27 03-02-19 (1) w m b p d h e e z e c v m a x a y 1 8 16 9 q a a 1 a 2 l p q detail x l (a ) 3 mo-150 pin 1 index 0 2.5 5 mm scale ssop16: plastic shrink small outline package; 16 leads; body width 5.3 mm sot338-1 a max. 2
74hc_hct138_3 ? koninklijke philips electronics n.v. 2005. all rights reserved. product data sheet rev. 03 23 december 2005 20 of 23 philips semiconductors 74hc138; 74hct138 3-to-8 line decoder/demultiplexer; inverting fig 13. package outline sot763-1 (dhvqfn16) terminal 1 index area 0.5 1 a 1 e h b unit y e 0.2 c references outline version european projection issue date iec jedec jeita mm 3.6 3.4 d h 2.15 1.85 y 1 2.6 2.4 1.15 0.85 e 1 2.5 0.30 0.18 0.05 0.00 0.05 0.1 dimensions (mm are the original dimensions) sot763-1 mo-241 - - - - - - 0.5 0.3 l 0.1 v 0.05 w 0 2.5 5 mm scale sot763-1 dhvqfn16: plastic dual in-line compatible thermal enhanced very thin quad flat package; no leads; 16 terminals; body 2.5 x 3.5 x 0.85 mm a (1) max. a a 1 c detail x y y 1 c e l e h d h e e 1 b 27 15 10 9 8 1 16 x d e c b a terminal 1 index area a c c b v m w m e (1) note 1. plastic or metal protrusions of 0.075 mm maximum per side are not included. d (1) 02-10-17 03-01-27
74hc_hct138_3 ? koninklijke philips electronics n.v. 2005. all rights reserved. product data sheet rev. 03 23 december 2005 21 of 23 philips semiconductors 74hc138; 74hct138 3-to-8 line decoder/demultiplexer; inverting 14. abbreviations 15. revision history table 13: abbreviations acronym description cmos complementary metal oxide semiconductor dut device under test esd electrostatic discharge hbm human body model lsttl low-power schottky transistor-transistor logic mm machine model table 14: revision history document id release date data sheet status change notice doc. number supersedes 74hc_hct138_3 20051223 product data sheet - - 74hc_hct138_cnv_2 modi?cations: ? the format of this data sheet has been redesigned to comply with the new presentation and information standard of philips semiconductors. ? section 4 order ing inf or mation , section 6 pinning inf or mation and section 13 p ac kage outline : added dhvqfn package information ? section 10 static char acter istics : added from the family speci?cation 74hc_hct138_cnv_2 19970827 product speci?cation ---
philips semiconductors 74hc138; 74hct138 3-to-8 line decoder/demultiplexer; inverting 74hc_hct138_3 ? koninklijke philips electronics n.v. 2005. all rights reserved. product data sheet rev. 03 23 december 2005 22 of 23 16. data sheet status [1] please consult the most recently issued data sheet before initiating or completing a design. [2] the product status of the device(s) described in this data sheet may have changed since this data sheet was published. the l atest information is available on the internet at url http://www.semiconductors.philips.com. [3] for data sheets describing multiple type numbers, the highest-level product status determines the data sheet status. 17. de?nitions short-form speci?cation the data in a short-form speci?cation is extracted from a full data sheet with the same type number and title. for detailed information see the relevant data sheet or data handbook. limiting values de?nition limiting values given are in accordance with the absolute maximum rating system (iec 60134). stress above one or more of the limiting values may cause permanent damage to the device. these are stress ratings only and operation of the device at these or at any other conditions above those given in the characteristics sections of the speci?cation is not implied. exposure to limiting values for extended periods may affect device reliability. application information applications that are described herein for any of these products are for illustrative purposes only. philips semiconductors makes no representation or warranty that such applications will be suitable for the speci?ed use without further testing or modi?cation. 18. disclaimers life support these products are not designed for use in life support appliances, devices, or systems where malfunction of these products can reasonably be expected to result in personal injury. philips semiconductors customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify philips semiconductors for any damages resulting from such application. right to make changes philips semiconductors reserves the right to make changes in the products - including circuits, standard cells, and/or software - described or contained herein in order to improve design and/or performance. when the product is in full production (status production), relevant changes will be communicated via a customer product/process change noti?cation (cpcn). philips semiconductors assumes no responsibility or liability for the use of any of these products, conveys no license or title under any patent, copyright, or mask work right to these products, and makes no representations or warranties that these products are free from patent, copyright, or mask work right infringement, unless otherwise speci?ed. 19. trademarks notice all referenced brands, product names, service names and trademarks are the property of their respective owners. 20. contact information for additional information, please visit: http://www.semiconductors.philips.com for sales of?ce addresses, send an email to: sales.addresses@www.semiconductors.philips.com level data sheet status [1] product status [2] [3] de?nition i objective data development this data sheet contains data from the objective speci?cation for product development. philips semiconductors reserves the right to change the speci?cation in any manner without notice. ii preliminary data quali?cation this data sheet contains data from the preliminary speci?cation. supplementary data will be published at a later date. philips semiconductors reserves the right to change the speci?cation without notice, in order to improve the design and supply the best possible product. iii product data production this data sheet contains data from the product speci?cation. philips semiconductors reserves the right to make changes at any time in order to improve the design, manufacturing and supply. relevant changes will be communicated via a customer product/process change noti?cation (cpcn).
? koninklijke philips electronics n.v. 2005 all rights are reserved. reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. the information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. no liability will be accepted by the publisher for any consequence of its use. publication thereof does not convey nor imply any license under patent- or other industrial or intellectual property rights. date of release: 23 december 2005 document number: 74hc_hct138_3 published in the netherlands philips semiconductors 74hc138; 74hct138 3-to-8 line decoder/demultiplexer; inverting 21. contents 1 general description . . . . . . . . . . . . . . . . . . . . . . 1 2 features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 3 quick reference data . . . . . . . . . . . . . . . . . . . . . 2 4 ordering information . . . . . . . . . . . . . . . . . . . . . 2 5 functional diagram . . . . . . . . . . . . . . . . . . . . . . 3 6 pinning information . . . . . . . . . . . . . . . . . . . . . . 4 6.1 pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 6.2 pin description . . . . . . . . . . . . . . . . . . . . . . . . . 5 7 functional description . . . . . . . . . . . . . . . . . . . 5 8 limiting values. . . . . . . . . . . . . . . . . . . . . . . . . . 6 9 recommended operating conditions. . . . . . . . 6 10 static characteristics. . . . . . . . . . . . . . . . . . . . . 7 11 dynamic characteristics . . . . . . . . . . . . . . . . . 11 12 waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 13 package outline . . . . . . . . . . . . . . . . . . . . . . . . 16 14 abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . 21 15 revision history . . . . . . . . . . . . . . . . . . . . . . . . 21 16 data sheet status . . . . . . . . . . . . . . . . . . . . . . . 22 17 de?nitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 18 disclaimers . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 19 trademarks. . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 20 contact information . . . . . . . . . . . . . . . . . . . . 22

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