1 ps8729d 06/07/06 features ? operation voltage: 1.65v v cca 3.6v 2.3v v ccb 5.5v v cca v ccb ? high speed: tpd = 5ns typical into 30pf @ 3v v cc ? power down high-impedance inputs and outputs ? high output drive: 12ma at 3v v cca /v ccb 24ma at 5v v ccb ? industrial operation at C40c to +85c ? packaging (pb-free & green available): C 8-pin msop (u) C 12-pin tdfn (ze) pi74stx2g4245 description pericom semiconductors pi74stx2g4245, a 2-bit noninverting buffer/transceiver, contains two separate supply rails:a port (v cca ), set to operate from 1.8v to 3.3v; b port (v ccb ), set to operate from 2.5v to 5v. the a1 to b1 translation is con- fgured as an unidirectional buffer; the translation between a2 and b2 is bidirectional and its direction is controlled by the dir pin. the dir pin is supplied by v ccb . block diagram pin confguration (msop) 2-bit level shifting buffer/transceiver with confgurable dual supply voltage dir b2 4 3 a2 b1 7 6 2 a1 function table input output dir data l b2 a2 h a2 b2 x a1 b1 pin description pin name description dir direction control a1 data input b1 data output a2, b2 data input/output v cca , v ccb power supply v ccb (2.5v to 5v) 1 (1.8v to 3.3v) v cca 8 b1 2 a1 7 b2 3 a2 6 gnd 4 dir 5 pin confguration (tdfn) 1 2 3 4 5 6 12 11 10 9 8 7 nc v ccb (2.5v to 5v) b1 b2 gnd nc nc (1.8v to 3.3v ) v cca a1 a2 dir nc * nc = no connect 06-0217
2 ps8729d 06/07/06 pi74stx2g4245 2-bit level shifting buffer/transceiver with confgurable dual supply voltage supply voltage range: v cca .............................. C0.5v to +6v v ccb .............................. C0.5v to +6v input voltage range, v i: input a1 (1) ................... C0.5v to +6v i/o a2 (1,2) ........ C0.5v to v cca +0.5v i/o b2 (1,2) ........ C0.5v to v ccb +0.5v output voltage range, v o output b1 (1,2) ... C0.5v to v ccb +0.5v notes: stresses greater than those listed under maximum ratings may cause permanent damage to the device. this is a stress rating only and functional operation of the device at these or any other conditions above those in dicated in the operational sections of this specifcation is not implied. exposure to absolute maximum rating conditions for extended periods may affect reliability. 1. the input negative voltage and output voltage ratings may be exceeded if the input and output current ratings are observed. 2. this value is limited to 6v. maximum ratings (absolute maximum ratings over operating free-air temperature range from v ccb at 2.5v & v cca at 1.2v, unless otherwise noted) dc input diode current, i ik (v o <0) .......................... C50ma dc output diode current, i ok (v o <0) ....................... C50ma dc output current, (i out ) ........................................... 50ma dc v cc or gnd current (i cc/ i gnd ) .......................... 100ma storage temperature range, t stg .................... C65c to 150c junction lead temperature (i os ) .................................... 260c power dissipation: msop ........................................... 200mw recommended operating conditions for a port ( v cca ) (1) parameter description test conditions min. max. units v cca supply voltage 1.65 3.6 v v ih high-level input voltage v cca = 1.65v to 1.95v 0.7 x v cca v cca = 2.3v to 3.6v 0.7 x v cca v il low-level input voltage v cca = 1.65 to 1.95v 0.3 x v cca v cca = 2.3v to 3.6v 0.3 x v cca v ia input voltage 0 v cca v oa output votage 0 v cca i oh high-level output current v cca = 1.65 v to 1.95v -4 ma v cca = 2.3v to 2.7v -8 v cca = 3v to 3.6v -12 i ol low-level output current v cca = 1.65v to 1.95v 4 v cca = 2.3v to 2.7v 8 v cca = 3v to 3.6v 12 ?t/?v input transition rise or fall rate v cca = 1.65v to 1.95v 20 ns/v v cca = 2.3v to 3.6v 10 t a operation free-air temperature -40 85 oc notes: 1. to ensure proper device operation, all unused inputs must be held at v cca or gnd. 06-0217
3 ps8729d 06/07/06 pi74stx2g4245 2-bit level shifting buffer/transceiver with confgurable dual supply voltage recommended operating conditions for b port ( v ccb ) (1) paramaters description test conditions min. max. units v ccb supply voltage 2.3 5.5 v v ih high-level input voltage data inputs v ccb = 2.3v to 5.5v 0.7 x v ccb dir pin v il low-level input voltage data inputs v ccb = 2.3v to 5.5v 0.3 x v ccb dir pin v ib input voltage 0 v ccb v ob output votage 0 v ccb i oh high-level output current v ccb = 2.3 v to 2.7v -8 ma v ccb = 3v to 3.6v -12 v ccb = 4.5v to 5.5v -24 i ol low-level output current v ccb = 2.3v to 2.7v 8 v ccb = 3v to 3.6v 12 v ccb = 4.5v to 5.5v 24 ?t/?v input transition rise or fall rate v ccb = 2.3v to 5.5v 10 m/v t a operation free-air temperature -40 85 oc notes: 1. to ensure proper device operation, all unused inputs must be held at v ccb or gnd. 06-0217
4 ps8729d 06/07/06 pi74stx2g4245 2-bit level shifting buffer/transceiver with confgurable dual supply voltage electrical characteristics (over recommended operating free-air temperature range) parameters test conditions v cca (1) v ccb (1) min. typ. (2) max. units v oha (b to a) i oh = -100ua 1.65v to 3.6v 2.3v v ccb 5.5v and v ccb v cca v ccb -0.1 v i oh = -4ma 1.65v 1.3 i oh = -8ma 2.3v 1.8 i oh = -12ma 3.0v 2.4 v ola (b to a) i oh = 100ua 1.65v to 3.6v 0.1 i oh = 4ma 1.65v 0.24 i oh = 8ma 2.3v 0.3 i oh = 12ma 3.0v 0.4 v ohb (a to b) i oh = -100ua 1.65v v cca 3.6v and v ccb v cca 2.3v to 5.5v v ccb -0.1 i oh = -8ma 2.3v 1.8 i oh = -12ma 3.0v 2.4 i oh = -24ma 4.5v 3.8 v olb (a to b) i oh = 100ua 2.3v to 5.5v 0.1 i oh = 8ma 2.3v 0.3 i oh = 12ma 3.0v 0.4 i oh = 24ma 4.5v 0.55 i i (3) v i = v cca /v ccb or gnd 1.65v to 3.6v and v ccb v cca 2.3v to 5.5v and v ccb v cca 5 a i off v i or v o = v ccb or gnd 0v 0 to 5.5v 10 v i or v o = v cca or gnd 0 to 3.6v 0v 10 i cca v i = v cca or gnd, i o = 0 1.65v to 3.6v and v ccb v cca 2.3 to 5.5v and v ccb v cca 10 i ccb v i = v ccb or gnd, i o = 0 10 c i a1, dir vi = v cca or gnd 1.8v 3.3v 4.5 pf c o b1 vo = v ccb or gnd 1.8v 3.3v 4.5 c io a2, b2 v i or v o = v cca /v ccb or gnd 1.8v 3.3v 6.0 notes : 1. when 1.65 v cca 1.95v, v ccb can not be greater then 3.6v 2. all typical values are at t a = 25oc 3. for i/o ports, the paraneter i i includes the output leackage current. 06-0217
5 ps8729d 06/07/06 pi74stx2g4245 2-bit level shifting buffer/transceiver with confgurable dual supply voltage switching characteristics for v cca = 1.8v 0.15v (over recommended operating free-air temperature range, see fgure 1) parameter from (input) to (output) v ccb = 2.5v 0.2v v ccb = 3.3v 0.3v units min. max. min. max. t phl a b 1.0 8 1.0 8 ns t plh 1.0 8 1.0 8 t phl b a 1.0 7 1.0 7 t plh 1.0 7 1.0 7 t sk(o) 1.5 1 switching characteristics for v cca = 2.5v 0.2v (over recommended operating free-air temperature range, see fgure 1) parameter from (input) to (output) v ccb = 2.5v 0.2v v ccb = 3.3v 0.3v v ccb = 5v 0.5v units min. max. min. max. min. max. t phl a b 1.0 7 1.0 6.5 1.0 6 ns t plh 1.0 7 1.0 6.5 1.0 6 t phl b a 1.0 6 1.0 6 1.0 5 t plh 1.0 6 1.0 6 1.0 5 t sk(o) 1.5 1 1 switching characteristics for v cca = 3.3v 0.3v (over recommended operating free-air temperature range, see fgure 1) parameter from (input) to (output) v ccb = 3.3v 0.3v v ccb = 5v 0.5v units min. max. min. max. t phl a b 1.0 5 1.0 5 ns t plh 1.0 5 1.0 5 t phl b a 1.0 5 1.0 5 t plh 1.0 5 1.0 5 t sk(o) 1 1 06-0217
6 ps8729d 06/07/06 pi74stx2g4245 2-bit level shifting buffer/transceiver with confgurable dual supply voltage ac loading and waveforms figure 1. ac test circuit figure 2. i ccd test circuit figure 3. ac waveforms c l includes load and str ay capacitance input prr = 1.0 mhz; t w = 500ns input r l c l v cca/b output input = ac wa veform; t r = t f = 1.8ns; prr = 10 mhz; duty cycle = 50% input output v cc a v oh gnd input output t w t phl t r = 3ns t f = 3ns t plh v ol 50% 50% 50% 50% 90% 90% 10% 10% v cc v cca/b c l r l 1.8 0.15v 15pf 1k 2.5v 0.2v 15pf 500 3.0v to 3.6v 30pf 500 5v 0.5v 50pf 500 06-0217
7 ps8729d 06/07/06 pi74stx2g4245 2-bit level shifting buffer/transceiver with confgurable dual supply voltage packaging mechanical: 8-pin msop (u) 15 ? max 15 ? max detail a detail a .112 .120 2.85 3.05 .114 .122 2.90 3.10 .114 .122 2.90 3.10 .010 0 ? - 6 ? 15? max. 15? max. 0.25 gauge plane .003 .012 .016 .028 .037 0.40 0.70 0.95 ref 0.07 0.30 .003 .012 0.07 0.30 packaging mechanical: 12-pin tdfn (ze) 06-0217
8 ps8729d 06/07/06 pi74stx2g4245 2-bit level shifting buffer/transceiver with confgurable dual supply voltage pericom semiconductor corporation ? 1-800-435-2336 ? www.pericom.com ordering information ordering code package code package type package top marking pi74STX2G4245UX u 8-pin msop de pi74stx2g4245uex u pb-free & green, 8-pin msop de pi74stx2g4245zeex ze pb-free & green, 12-pin tdfn de notes : ? thermal characteristics can be found on the company web site at www .pericom.com/packaging/ ? e = pb-free & green ? x suffx = tape/reel 06-0217
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