tc74lvx240,244f/fw/ft 2002-01-16 1 toshiba cmos digital integrated circuit silicon monolithic tc74lvx240f,tc74lvx240fw,tc74lvx240ft TC74LVX244F,TC74LVX244Fw,TC74LVX244Ft octal bus buffer tc74lvx240 inverted, 3-state outputs tc74lvx244 non-inverted, 3-state outputs the tc74lvx240,244f/ fw/ ft is a high-speed cmos octal bus buffer fabricated using silicon gate cmos technology. designed for use in 3-v systems, it achieves high-speed operation while maintaining the cmos low power dissipation. this device is suitable for low-voltage and battery operated systems. the tc74lvx240 is an inverting 3-state buffer while the tc74lvx244 is non-inverting. both devices have two active-low output enables. these devices are designed to be used in such applications as 3-state memory address drivers. an input protection circuit ensures that 0 to 5.5v can be applied to the input pins without regard to the supply voltage. this device can be used to interface 5v to 3v systems and two supply systems such as battery back up. this circuit prevents device destruction due to mismatched supply and input voltages. features high-speed: t pd = 4.7 ns (typ.) (v cc = 3.3 v) low power dissipation: i cc = 4 a (max) (ta = 25c) input voltage level: v il = 0.8 v (max) (v cc = 3 v) v ih = 2.0 v (min) (v cc = 3 v) power-down protection provided on all inputs balanced propagation delays: t plh t phl low niose: v olp = 0.8 v (max) pin and function compatible with 74hc240/244 note: xxxfw (jedec sop) is not available in japan. tc74lvx240f, TC74LVX244F tc74lvx240fw, TC74LVX244Fw tc74lvx240ft, TC74LVX244Ft weight sop20-p-300-1.27: 0.22 g (typ.) sol20-p-300-1.27: 0.46 g (typ.) tssop20-p-0044-0.65: 0.08 g (typ.) www.datasheet www.datasheet www.datasheet www.datasheet 4u 4u4u 4u .com .com .com .com 4 .com u datasheet
tc74lvx240,244f/fw/ft 2002-01-16 2 pin assignment (top view) iec logic symbol truth table inputs outputs g a n y n (244) ) 240 ( n y l l l h l h h l h x z z x: don?t care z: high impedance v cc 20 g 2 1 y 1 2a4 2 y 1 2a3 19 18 17 16 15 14 g 1 1 2 3 4 5 6 7 1a1 4 y 2 1a2 3 y 2 1a3 2 y 2 3 y 1 8 9 10 1a4 1 y 2 gnd 13 12 11 2a2 4 y 1 2a1 tc74lvx240 v cc 20 g 2 1y1 2a4 1y2 2a3 19 18 17 16 15 14 g 1 1 2 3 4 5 6 7 1a1 2y4 1a2 2y3 1a3 2y2 1y3 8 9 10 1a4 2y1 gnd 13 12 11 2a2 1y4 2a1 tc74lvx244 tc74lvx240 (1) (2) (4) (6) (8) (19) (11) (13) (15) (17) (18) (16) (14) (12) en en (9) (7) (5) (3) g 1 1a1 1a2 1a3 1a4 2a1 2a2 2a3 2a4 g 2 2 y 1 3 y 1 4 y 1 1 y 1 1 y 2 2 y 2 3 y 2 4 y 2 tc74lvx244 (1) (2) (4) (6) (8) (19) (11) (13) (15) (17) (18) (16) (14) (12) en en (9) (7) (5) (3) g 1 1a1 1a2 1a3 1a4 2a1 2a2 2a3 2a4 g 2 1y1 1y2 1y3 1y4 2y1 2y2 2y3 2y4 www.datasheet www.datasheet www.datasheet www.datasheet 4u 4u4u 4u .com .com .com .com 4 .com u datasheet
tc74lvx240,244f/fw/ft 2002-01-16 3 maximum ratings characteristics symbol rating unit supply voltage range v cc 0.5 to 7.0 v dc input voltage v in 0.5 to 7.0 v dc output voltage v out 0.5 to v cc 0.5 v input diode current i ik 20 ma output diode current i ok 20 ma dc output current i out 25 ma dc v cc /ground current i cc 75 ma power dissipation p d 180 mw storage temperature t stg 65 to 150 c recommended operating conditions characteristics symbol rating unit supply voltage v cc 2.0 to 3.6 v input voltage v in 0 to 5.5 v output voltage v out 0 to v cc v operating temperature t opr 40 to 85 c input rise and fall time dt/dv 0 to 100 ns/v electrical characteristics dc characteristics ta 25c ta 40 to 85c characteristics sym- bol test condition v cc (v) min typ. max min max unit 2.0 1.5 1.5 3.0 2.0 2.0 h-level v ih 3.6 2.4 2.4 2.0 0.5 0.5 3.0 0.8 0.8 input voltage l-level v il 3.6 0.8 0.8 v i oh 50 a 2.0 1.9 2.0 1.9 i oh 50 a 3.0 2.9 3.0 2.9 h-level v oh v in v ih or v il i oh 4 ma 3.0 2.58 2.48 i ol 50 a 2.0 0 0.1 0.1 i ol 50 a 3.0 0 0.1 0.1 output voltage l-level v ol v in v ih or v il i ol 4 ma 3.0 0.36 0.44 v 3-state output off-state current i oz v in v ih or v il v out v cc or gnd 3.6 0.25 2.5 a input leakage current i in v in 5.5 v or gnd 3.6 0.1 1.0 a quiescent supply current i cc v in v cc or gnd 3.6 4.0 40.0 a www.datasheet www.datasheet www.datasheet www.datasheet 4u 4u4u 4u .com .com .com .com 4 .com u datasheet
tc74lvx240,244f/fw/ft 2002-01-16 4 ac characteristics (input: t r t f 3 ns) ta 25c ta 40 to 85c characteristics symbol test condition v cc (v) c l (pf) min typ. max min max unit 15 5.7 10.1 1.0 12.5 t plh 2.7 50 8.2 13.6 1.0 16.0 15 4.3 6.2 1.0 7.5 propagation delay time (tc74lvx240) t phl 3.3 0.3 50 6.8 9.7 1.0 11.0 ns 15 6.1 11.4 1.0 13.5 t plh 2.7 50 8.6 14.9 1.0 17.0 15 4.7 7.1 1.0 8.5 propagation delay time (tc74lvx244) t phl 3.3 0.3 50 7.2 10.6 1.0 12.0 ns 15 7.1 13.8 1.0 16.5 t pzl 2.7 50 9.6 17.3 1.0 20.0 15 5.5 8.8 1.0 10.5 output enable time t pzh r l 1 k 3.3 0.3 50 8.0 12.3 1.0 14.0 ns t plz 2.7 50 11.6 16.0 1.0 19.0 output disable time t phz r l 1 k 3.3 0.3 50 9.7 11.4 1.0 13.0 ns 2.7 50 1.5 1.5 output to output skew t oslh t oshl (note 1) 3.3 0.3 50 1.5 1.5 ns input capacitance c in (note 2) 4 10 10 pf output capacitance c out 6 pf tc74lvx240 17 power dissipation capacitance (note 3) c pd tc74lvx244 19 pf note 1: parameter guaranteed by design. (t oslh |t plhm t plhn |, t oshl |t phlm t phln |) note 2: parameter guaranteed by design. note 3: c pd is defined as the value of the internal equivalent capacitance which is calculated from the operating current consumption. average operating current can be obtained by the equation: i cc (opr) c pd ? v cc ? f in i cc /8 (per bit) www.datasheet www.datasheet www.datasheet www.datasheet 4u 4u4u 4u .com .com .com .com 4 .com u datasheet
tc74lvx240,244f/fw/ft 2002-01-16 5 noise characteristics (ta 25c, input: t r t f 3 ns, c l 50 pf) characteristics symbol test condition v cc (v) typ. limit unit quiet output maximum dynamic v ol v olp 3.3 0.5 0.8 v quiet output minimum dynamic v ol v olv 3.3 0.5 0.8 v minimum high level dynamic input voltage v ih v ihd 3.3 2.0 v maximum low level dynamic input voltage v il v ild 3.3 0.8 v input equivalent circuit input www.datasheet www.datasheet www.datasheet www.datasheet 4u 4u4u 4u .com .com .com .com 4 .com u datasheet
tc74lvx240,244f/fw/ft 2002-01-16 6 package dimensions weight: 0.22 g (typ.) www.datasheet www.datasheet www.datasheet www.datasheet 4u 4u4u 4u .com .com .com .com 4 .com u datasheet
tc74lvx240,244f/fw/ft 2002-01-16 7 package dimensions weight: 0.46 g (typ.) www.datasheet www.datasheet www.datasheet www.datasheet 4u 4u4u 4u .com .com .com .com 4 .com u datasheet
tc74lvx240,244f/fw/ft 2002-01-16 8 package dimensions weight: 0.08 g (typ.) www.datasheet www.datasheet www.datasheet www.datasheet 4u 4u4u 4u .com .com .com .com 4 .com u datasheet
tc74lvx240,244f/fw/ft 2002-01-16 9 toshiba is continually working to improve the quality and reliability of its products. nevertheless, semiconductor devices in general can malfunction or fail due to their inherent electrical sensitivity and vulnerability to physical stress. it is the responsibility of the buyer, when utilizing toshiba products, to comply with the standards of safety in making a safe design for the entire system, and to avoid situations in which a malfunction or failure of such toshiba products could cause loss of human life, bodily injury or damage to property. in developing your designs, please ensure that toshiba products are used within specified operating ranges as set forth in the most recent toshiba products specifications. also, please keep in mind the precautions and conditions set forth in the ?handling guide for semiconductor devices,? or ?toshiba semiconductor reliability handbook? etc.. the toshiba products listed in this document are intended for usage in general electronics applications (computer, personal equipment, office equipment, measuring equipment, industrial robotics, domestic appliances, etc.). these toshiba products are neither intended nor warranted for usage in equipment that requires extraordinarily high quality and/or reliability or a malfunction or failure of which may cause loss of human life or bodily injury (?unintended usage?). unintended usage include atomic energy control instruments, airplane or spaceship instruments, transportation instruments, traffic signal instruments, combustion control instruments, medical instruments, all types of safety devices, etc.. unintended usage of toshiba products listed in this document shall be made at the customer?s own risk. the products described in this document are subject to the foreign exchange and foreign trade laws. the information contained herein is presented only as a guide for the applications of our products. no responsibility is assumed by toshiba corporation for any infringements of intellectual property or other rights of the third parties which may result from its use. no license is granted by implication or otherwise under any intellectual property or other rights of toshiba corporation or others. the information contained herein is subject to change without notice. 000707eb a restrictions on product use www.datasheet www.datasheet www.datasheet www.datasheet 4u 4u4u 4u .com .com .com .com 4 .com u datasheet
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