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1/12 july 2001 n high speed: t pd = 17ns (typ.) at v cc =6v n low power dissipation: i cc =4 m a(max.) at t a =25 c n high noise immunity: v nih =v nil =28%v cc (min.) n symmetrical output impedance: |i oh |=i ol = 4ma (min) n balanced propagation delays: t plh @ t phl n wide operating voltage range: v cc (opr) = 2v to 6v n pin and function compatible with 74 series 151 description the m74hc151 is an high speed cmos 8 channel multiplexer fabricated with silicon gate c 2 mos technology. it provides, in one package, the ability to select one bit of data from up to eight sources. the m74hc151 can be used as a universal function generator to generate any logic function of four variables. outputs y and w are complementary; the selection depends on the address inputs a, b, and c. the strobe input must be taken low to enable this device, when the strobe is high w output is forced high and consequently y output goes low. all inputs are equipped with protection circuits against static discharge and transient excess voltage. m74hc151 8 channel multiplexer pin connection and iec logic symbols order codes package tube t & r dip m74hc151b1r sop m74hc151m1r M74HC151RM13TR tssop m74hc151ttr tssop dip sop
m74hc151 2/12 input and output equivalent circuit pin description truth table x : don't care pin no symbol name and function 4, 3, 2, 1, 15, 14, 13, 12 d 0 to d 7 multiplexer inputs 5 y multiplexer output 6 w complementary multiplexer output 7 strobe strobe input 11, 10, 9 a, b, c select inputs 8 gnd ground (0v) 16 v cc positive supply voltage inputs outputs select strobe yw cbas xxxhlh llll d 0 d 0 llhl d 1 d 1 lhll d 2 d 2 lhhl d 3 d 3 hlll d 4 d 4 hlhl d 5 d 5 hhl l d 6 d 6 hhhl d 7 d 7
m74hc151 3/12 logic diagram this logic diagram has not be used to estimate propagation delays
m74hc151 4/12 absolute maximum ratings absolute maximum ratings are those values beyond which damage to the device may occur. functional operation under these conditions is not implied (*) 500mw at 65 c; derate to 300mw by 10mw/ c from 65 cto85 c recommended operating conditions symbol parameter value unit v cc supply voltage -0.5 to +7 v v i dc input voltage -0.5 to v cc + 0.5 v v o dc output voltage -0.5 to v cc + 0.5 v i ik dc input diode current 20 ma i ok dc output diode current 20 ma i o dc output current 25 ma i cc or i gnd dc v cc or ground current 50 ma p d power dissipation 500(*) mw t stg storage temperature -65 to +150 c t l lead temperature (10 sec) 300 c symbol parameter value unit v cc supply voltage 2to6 v v i input voltage 0 to v cc v v o output voltage 0 to v cc v t op operating temperature -55 to 125 c t r ,t f input rise and fall time v cc = 2.0v 0 to 1000 ns v cc = 4.5v 0 to 500 ns v cc = 6.0v 0 to 400 ns
m74hc151 5/12 dc specifications symbol parameter test condition value unit v cc (v) t a =25 c -40 to 85 c -55 to 125 c min. typ. max. min. max. min. max. v ih high level input voltage 2.0 1.5 1.5 1.5 v 4.5 3.15 3.15 3.15 6.0 4.2 4.2 4.2 v il low level input voltage 2.0 0.5 0.5 0.5 v 4.5 1.35 1.35 1.35 6.0 1.8 1.8 1.8 v oh high level output voltage 2.0 i o =-20 m a 1.9 2.0 1.9 1.9 v 4.5 i o =-20 m a 4.4 4.5 4.4 4.4 6.0 i o =-20 m a 5.9 6.0 5.9 5.9 4.5 i o =-4.0 ma 4.18 4.31 4.13 4.10 6.0 i o =-5.2 ma 5.68 5.8 5.63 5.60 v ol low level output voltage 2.0 i o =20 m a 0.0 0.1 0.1 0.1 v 4.5 i o =20 m a 0.0 0.1 0.1 0.1 6.0 i o =20 m a 0.0 0.1 0.1 0.1 4.5 i o =4.0 ma 0.17 0.26 0.33 0.40 6.0 i o =5.2 ma 0.18 0.26 0.33 0.40 i i input leakage current 6.0 v i =v cc or gnd 0.1 1 1 m a i cc quiescent supply current 6.0 v i =v cc or gnd 44080 m a
m74hc151 6/12 ac electrical characteristics (c l = 50 pf, input t r =t f = 6ns) capacitive characteristics 1) c pd is defined as the value of the ic's internal equivalent capacitance which is calculated from the operating current consumption without load. (refer to test circuit). average operating current can be obtained by the following equation. i cc(opr) =c pd xv cc xf in +i cc symbol parameter test condition value unit v cc (v) t a =25 c -40 to 85 c -55 to 125 c min. typ. max. min. max. min. max. t tlh t thl output transition time 2.0 30 75 95 110 ns 4.5 8151922 6.0 7131619 t plh t phl propagation delay time (d - w) 2.0 56 130 165 190 ns 4.5 16 26 33 38 6.0 14 22 28 32 t plh t phl propagation delay time (d - y) 2.0 56 130 165 190 ns 4.5 16 26 33 38 6.0 14 22 28 32 t plh t phl propagation delay time (strobe-w) 2.0 30 85 105 125 ns 4.5 10 17 21 25 6.0 9141821 t plh t phl propagation delay time (strobe-y) 2.0 30 85 105 125 ns 4.5 10 17 21 25 6.0 9141821 t plh t phl propagation delay time (a, b, c - w) 2.0 72 160 200 235 ns 4.5 20 32 40 47 6.0 17 27 34 40 t plh t phl propagation delay time (a, b, c - y) 2.0 72 160 200 235 ns 4.5 20 32 40 47 6.0 17 27 34 40 symbol parameter test condition value unit v cc (v) t a =25 c -40 to 85 c -55 to 125 c min. typ. max. min. max. min. max. c in input capacitance 5.0 5101010pf c pd power dissipation capacitance (note 1) 5.0 63 pf
m74hc151 7/12 test circuit c l = 50pf or equivalent (includes jig and probe capacitance) r t =z out of pulse generator (typically 50 w ) waveform 1: propagation delay times (f=1mhz; 50% duty cycle)
m74hc151 8/12 waveform 2 : propagation delay times (f=1mhz; 50% duty cycle)
m74hc151 9/12 dim. mm. inch min. typ max. min. typ. max. a1 0.51 0.020 b 0.77 1.65 0.030 0.065 b 0.5 0.020 b1 0.25 0.010 d 20 0.787 e 8.5 0.335 e 2.54 0.100 e3 17.78 0.700 f 7.1 0.280 i 5.1 0.201 l 3.3 0.130 z 1.27 0.050 plastic dip-16 (0.25) mechanical data p001c
m74hc151 10/12 dim. mm. inch min. typ max. min. typ. max. a 1.75 0.068 a1 0.1 0.2 0.003 0.007 a2 1.65 0.064 b 0.35 0.46 0.013 0.018 b1 0.19 0.25 0.007 0.010 c 0.5 0.019 c1 45 (typ.) d 9.8 10 0.385 0.393 e 5.8 6.2 0.228 0.244 e 1.27 0.050 e3 8.89 0.350 f 3.8 4.0 0.149 0.157 g 4.6 5.3 0.181 0.208 l 0.5 1.27 0.019 0.050 m 0.62 0.024 s8 (max.) so-16 mechanical data po13h
m74hc151 11/12 dim. mm. inch min. typ max. min. typ. max. a 1.2 0.047 a1 0.05 0.15 0.002 0.004 0.006 a2 0.8 1 1.05 0.031 0.039 0.041 b 0.19 0.30 0.007 0.012 c 0.09 0.20 0.004 0.0089 d 4.9 5 5.1 0.193 0.197 0.201 e 6.2 6.4 6.6 0.244 0.252 0.260 e1 4.3 4.4 4.48 0.169 0.173 0.176 e 0.65 bsc 0.0256 bsc k0 8 0 8 l 0.45 0.60 0.75 0.018 0.024 0.030 tssop16 mechanical data c e b a2 a e1 d 1 pin 1 identification a1 l k e 0080338d
m74hc151 12/12 information furnished is believed to be accurate and reliable. however, stmicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringe ment of patents or other righ ts of third parties which may result from its use. no license is granted by implication or otherwise under any patent or patent rights of stmicroelectronics. specifications mentioned in this pub lication are subject to change without notice. thi s pub lication supersedes and replaces all information previously supplied. stmicroelectronics prod ucts are not authori zed for use as critical components in life suppo rt devices or systems without express written approval of stmicroelectronics. ? the st logo is a registered trademark of stmicroelectronics ? 2001 stmicroelectronics - printed in italy - all rights reserved stmicroelectronics group of companies australia - brazil - china - finland - france - germany - hong kong - india - italy - japan - malaysia - malta - morocco singapore - spain - sweden - swit zerland - united kingdom ? http://w ww.st.com

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