1/9 february 2002 n 3.6v tolerant inputs and outputs n high speed: t pd = 3.0ns (max.) at v cc = 3.0 to 3.6v t pd = 3.7ns (max.) at v cc = 2.3 to 2.7v n power down protection on inputs and outputs n symmetrical output impedance: |i oh |=i ol = 24ma (min) at v cc =3v |i oh |=i ol = 8ma (min) at v cc = 2.3v n operating voltage range: v cc (opr) = 1.65v to 3.6v n pin and function compatible with 74 series 32245 n bus hold provided on both side n latch-up performance exceeds 300ma n esd performance: hbm > 2000v (mil std 883 method 3015); mm > 200v description the 74alvch32245 is a low voltage cmos 32-bit bus transceiver (3-state) fabricated with sub-micron silicon gate and five-layer metal wiring c 2 mos technology. it is ideal for 1.65 to 3.6 v applications; it can be interfaced to 3.6v signal enviroment for both inputs and outputs. this ic is intended for two-ways asynchronous communication between data buses: the direction of data trasmission is determined by dir input. any ng contol output governs eight bus transceivers. output enable input (ng) tied together gives full 32-bit operation. when ng is low, the output are enabled. when ng is high, the output are in high impedance state so that the buses are effectively isolated. bus hold on data inputs is provided in order to eliminate the need for external pull-up or pull-down resistor. all inputs and outputs are equipped with protection circuits against static discharge, giving them 2kv esd immunity and transient excess voltage. 74alvch32245 low voltage cmos 32-bit bus transceiver (3-state) with 3.6v tolerantat inputs and outputs logic diagram order codes package tray t & r lfbga96 74ALVCH32245LB 74ALVCH32245LBr lfbga96 (top and bottom view)
74alvch32245 2/9 pin connection (top view) terminal assignment input and output equivalent circuit pin description truth table x : don`t care z : high impedance abcdefghjklmnprt 6 1a2 1a4 1a6 1a8 2a2 2a4 2a6 2a7 3a2 3a4 3a6 3a8 4a2 4a4 4a6 4a7 5 1a1 1a3 1a5 1a7 2a1 2a3 2a5 2a8 3a1 3a3 3a5 3a7 4a1 4a3 4a5 4a8 4 1g gnd v cc gnd gnd v cc gnd 2g 3g gnd v cc gnd gnd v cc gnd 4g 3 1dir gnd v cc gnd gnd v cc gnd 2dir 3dir gnd v cc gnd gnd v cc gnd 4dir 2 1b1 1b3 1b5 1b7 2b1 2b3 2b5 2b8 3b1 3b3 3b5 3b7 4b1 4b3 4b5 4b8 1 1b2 1b4 1b6 1b8 2b2 2b4 2b6 2b7 3b2 3b4 3b6 3b8 4b2 4b4 4b6 4b7 symbol name and function ndir directional control na1 to na8 data inputs/outputs nb1 to nb8 data inputs/outputs ng output enable inputs gnd ground (0v) v cc positive supply voltage inputs function output ng ndir a bus b bus yn l l output input a = b l h input output b = a hxzzz
74alvch32245 3/9 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 1) i o absolute maximum rating must be observed 2) v o < gnd recommended operating conditions 1) truth table guaranteed: 1.2v to 3.6v 2) v in from 0.8v to 2v at v cc = 3.0v symbol parameter value unit v cc supply voltage -0.5 to +4.6 v v i dc input voltage -0.5 to +4.6 v v o dc output voltage (v cc = 0v) -0.5 to +4.6 v v o dc output voltage (high or low state) (note 1) -0.5 to v cc + 0.5 v i ik dc input diode current -50 ma i ok dc output diode current (note 2) -50 ma i o dc output current 50 ma i cc or i gnd dc v cc or ground current per supply pin 100 ma p d power dissipation 400 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 (note 1) 1.65 to 3.6 v v i input voltage 0 to 3.6 v v o output voltage (v cc = 0v) 0 to 3.6 v v o output voltage (high or low state) 0 to v cc v i oh ,i ol high or low level output current (v cc = 3.0 to 3.6v) 24 ma i oh ,i ol high or low level output current (v cc =2.7v) 12 ma i oh ,i ol high or low level output current (v cc = 2.3 to 2.5v) 8ma t op operating temperature -40 to +85 c dt/dv input rise and fall time (note 2) 0 to 10 ns/v
74alvch32245 4/9 dc specifications symbol parameter test conditi on value unit v cc (v) -40 to 85 c min. max. v ih high level input voltage 1.65 to 1.95 0.65v cc v 2.3 to 2.7 1.7 2.7 to 3.6 2.0 v il low level input voltage 1.65 to 1.95 0.35v cc v 2.3 to 2.7 0.7 2.7 to 3.6 0.8 v oh high level output voltage 1.65 to 3.6 i o =-100 m av cc -0.2 v 1.65 i o =-4 ma 1.2 2.3 i o =-8 ma 1.7 2.7 i o =-12 ma 2.2 3.0 i o =-12 ma 2.4 3.0 i o =-24 ma 2.2 v ol low level output voltage 1.65 to 3.6 i o =100 m a 0.2 v 1.65 i o =4 ma 0.45 2.3 i o =8 ma 0.7 2.7 i o =12 ma 0.4 3.0 i o =12 ma 0.4 3.0 i o =24 ma 0.55 i i input leakage current 3.6 v i =v cc or gnd 5 m a i i(hold) input hold current 1.65 v i = 0.58v 25 m a 1.65 v i = 1.07v -25 2.3 v i = 0.7v 45 2.3 v i = 1.7v -45 3 v i = 0.8v 75 3 v i =2v -75 3.6 v i = 0 to 3.6v 500 i oz high impedance output leakage current 3.6 v o =v cc or gnd 10 m a i off power off leakage current 0 v i or v o = 0 to 3.6v 20 m a i cc quiescent supply current 3.6 v i =v cc or gnd, i o =0 40 m a d i cc i cc incr. per input 3.0 to 3.6 v ih =v cc -0.6v other v i =v cc or gnd 750 m a
74alvch32245 5/9 ac electrical characteristics 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 /32 (per circuit) symbol parameter test condition value unit v cc (v) c l (pf) -40 to 85 c min. max. t plh t phl propagation delay time 2.3 to 2.7 30 1.0 3.7 ns 2.7 50 1.0 3.6 3.0 to 3.6 50 1.0 3.0 t pzl t pzh output enable time 2.3 to 2.7 30 1.0 5.7 ns 2.7 50 1.0 5.4 3.0 to 3.6 50 1.0 4.4 t plz t phz output disable time 2.3 to 2.7 30 1.0 5.2 ns 2.7 50 1.0 4.6 3.0 to 3.6 50 1.0 4.1 symbol parameter test conditio n value unit v cc (v) t a =25 c min. typ. max. c in input capacitance 3.3 v i =0vorv cc 4pf c out output capacitance 3.3 v i =0vorv cc 8pf c pd power dissipation capacitance (note 1) 2.5 f in = 10mhz v i =0vorv cc 22 pf 3.3 28
74alvch32245 6/9 test circuit r t =z out of pulse generator (typically 50 w ) test circuit and waveform symbol value test switch t plh ,t phl open t pzl ,t plz (v cc = 3.0 to 3.6v) 6v t pzl ,t plz (v cc = 2.3 to 2.7v) 2v cc t pzh ,t phz gnd symbol v cc 3.0 to 3.6v 2.7v 2.3 to 2.7v 1.65 to 1.95v v ih 2.7v 2.7v v cc v cc v m 1.5v 1.5v v cc /2 v cc /2 v x v ol +0.3v v ol +0.3v v ol +0.15v v ol +0.15v v y v oh -0.3v v oh -0.3v v oh -0.15v v oh -0.15v c l 50pf 50pf 30pf 30pf r l =r 1 500 w 500 w 500 w 1000 w t r =t r <2.5ns <2.5ns <2.0ns <2.0ns
74alvch32245 7/9 waveform 1: propagation delay (f=1mhz; 50% duty cycle) waveform 2: output enable and disable time (f=1mhz; 50% duty cycle)
74alvch32245 8/9 dim. mm. mils min. typ max. min. typ. max. a 13.40 13.60 527.5 535.4 b 5.40 5.60 212.6 220.5 c 1.6 63.0 d 0.5 19.7 e 0.8 31.5 f 1 .15 45.3 lfbga96 mechanical data
74alvch32245 9/9 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 infringement of patents or other rights 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 publication are subject to change without notice. this publication supersedes and replaces all information previously supplied. stmicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of stmicroelectronics. ? the st logo is a registered trademark of stmicroelectronics ? 2002 stmicroelectronics - printed in italy - all rights reserved stmicroelectronics group of companies australia - brazil - canada - china - finland - france - germany - hong kong - india - israel - italy - japan - malaysia - malta - morocco singapore - spain - sweden - switzerland - united kingdom - united states. ? http://www.st.com
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