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industrial temperature range idt74LVCC3245A cmos octal bus transceiver with adjustable output 1 july 2000 industrial temperature range the idt logo is a registered trademark of integrated device technology, inc. ? 2000 integrated device technology, inc. dsc-4704/3 features: ? 0.5 micron cmos technology ?v cca = 2.3v to 3.6v ?v ccb = 3v to 5.5v ? cmos power levels (0.4 w typ. static) ? rail-to-rail output swing for increased noise margin ? all inputs, outputs, and i/o are 5v tolerant ? supports hot insertion ? available in soic, ssop, qsop, and tssop packages functional block diagram applications: ? 5v and 3.3v mixed voltage systems ? data communication and telecommunication systems drive features: ? high output drivers: 24ma ? reduced system switching noise idt74LVCC3245A description: the lvcc3245a is manufactured using advanced dual metal cmos technology. this 8-bit (octal) noninverting bus transceiver contains two separate supply rails. the b port is designed to track v ccb , which accepts voltages from 3v to 5.5v, and the a port is designed to track v cca , which operates at 2.3v to 3.6v. this allows for translation from a 3.3v to a 5v system environment and vice-versa, or from a 2.5v to a 3.3v system environment, and vice-versa. this lvcc3245a is ideal for asynchronous communication between two data buses (a and b). the device transmits data from a to b or from b to a, depending on the logic level at the direction-control (dir) input. the output-enable ( oe ) input can be used to disable the device so the buses are effectively isolated. the lvcc3245a has been designed with a 24ma output driver. this driver is capable of driving a moderate to heavy load while maintaining speed performance. cmos octal bus transceiver with adjustable output voltage, 3-state out- puts, 5 volt tolerant i/o dir a 1 a 2 a 3 a 4 a 5 a 6 a 7 a 8 b 8 b 7 b 6 b 5 b 4 b 3 b 2 b 1 oe 2 3 4 5 6 7 8 9 10 14 15 16 17 18 19 20 21 22 2 . 3 v t o 3 . 6 v p o r t 3 v t o 5 . 5 v p o r t
industrial temperature range 2 idt74LVCC3245A cmos octal bus transceiver with adjustable output pin configuration soic/ ssop/ qsop/ tssop top view pin names description oe output enable input (active low) dir direction control input a x port a inputs or 3-state outputs b x port b inputs or 3-state outputs n c no internal connection pin description note: 1. h = high voltage level l = low voltage level x = don?t care inputs oe dir outputs l l bus b data to bus a l h bus a data to bus b h x high z state function table (1) note: 1. as applicable to the device type. symbol parameter (1) conditions typ. unit c in input capacitance v in = 0v 4.5 pf c i/o i/o port capacitance v in = 0v 11 pf capacitance (t a = +25c, f = 1.0mhz) absolute maximum ratings for v ccb or v ccb (1) symbol description max unit v term terminal voltage with respect to gnd ?0.5 to +6 v t stg storage temperature ?65 to +150 c i out dc output current ?50 to +50 ma i ik continuous clamp current, ?50 ma i ok v i < 0 or v o < 0 i cc continuous current through each 100 ma i ss v cc or gnd note: 1. stresses greater than those listed under absolute 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 indicated in the operational sections of this specification is not implied. exposure to absolute maximum rating conditions for extended periods may affect reliability. 2 3 1 a 1 20 19 18 b 4 b 3 b 5 b 1 b 2 15 b 7 b 8 16 9 gnd 10 a 8 b 6 23 22 24 21 17 dir 5 6 a 6 7 a 4 a 5 4 a 2 a 3 8 a 7 oe 13 14 11 gnd 12 v ccb (3v to 5.5v) nc gnd (2.3v to 3.6v) v cca
industrial temperature range idt74LVCC3245A cmos octal bus transceiver with adjustable output 3 symbol parameter test conditions min. typ. (2) max. unit v ih input high voltage level v ob 0.1v v cca = 2.3v, v ccb = 3v 1.7 ? ? v v ob v ccb - 0.1v v cca = 2.7v to 3.6v 2 ? ? v il input low voltage level v cca = 2.3v, v ccb = 3v ? ? 0.7 v v cca = 2.7v to 3.6v ? ? 0.8 i ih input leakage current v cca = 3.6v v i = 0 to 5.5v ? ? 1a i il i ozh high impedance output current v cca = 3.6v v o = v cca or gnd ? ? 5a i ozl (3-state output pins) i off input/output power off leakage v cca = 0v, v in or v o 5.5v ? ? 50 a v h input hysteresis v cca = 3.3v ? 100 ? mv i ccl quiescent power supply current v cca = 3.6v v in = gnd or v cc ?? 50a i cch i ccz ? i cc quiescent power supply current one input at v cca - 0.6, other inputs at v cca or gnd ? ? 500 a variation dc electrical characteristics over operating range (a port) following conditions apply unless otherwise specified: operating condition: t a = ?40c to +85c, v cca = 2.3v to 3.6v (1) notes: 1. v ccb = 3v to 5.5v. 2. typical values are at v cc = 3.3v, +25c ambient. 3. this applies in the disabled state only. symbol parameter test conditions min. typ. (2) max. unit v ih input high voltage level v oa 0.1v v ccb = 3v to 3.6v 2 ? ? v v oa v cca - 0.1v v ccb = 5.5v 3.85 ? ? v il input low voltage level v ccb = 3v to 3.6v ? ? 0.8 v v ccb = 5.5v ? ? 1.65 i ih input leakage current v ccb = 3.6v v i = 0 to 5.5v ? ? 1a i il i ozh high impedance output current v ccb = 3.6v v o = v ccb or gnd ? ? 5a i ozl (3-state output pins) i off input/output power off leakage v ccb = 0v, v in or v o 5.5v ? ? 50 a v h input hysteresis v ccb = 3.3v ? 100 ? mv i ccl quiescent power supply current v ccb = 3.6v v in = gnd or v cc ?? 50a i cch v ccb = 5.5v ? ? 80 i ccz ? i cc quiescent power supply current one input at v ccb - 2.1 other inputs at v ccb or gnd ? ? 1.5 ma variation dc electrical characteristics over operating range (b port) following conditions apply unless otherwise specified: operating condition: t a = ?40c to +85c, v ccb = 3v to 5.5v (1) notes: 1. v cca = 2.3v to 3.6v. 2. typical values are at v cc = 3.3v, +25c ambient. 3. this applies in the disabled state only.
industrial temperature range 4 idt74LVCC3245A cmos octal bus transceiver with adjustable output note: 1. v ih and v il must be within the min. or max. range shown in the dc electrical characteristics over operating range table for the appropriat e v cc range. t a = ? 40c to + 85c, v ccb = 3v to 5.5v. output drive characteristics, v cca = 2.3v to 3.6v (a port) note: 1. v ih and v il must be within the min. or max. range shown in the dc electrical characteristics over operating range table for the appropriat e v cc range. t a = ? 40c to + 85c, v cca = 2.3v to 3.6v. output drive characteristics, v ccb = 3v to 5.5v (b port) operating characteristics, t a = 25c v cca = 3.3v, v ccb = 5v symbol parameter test conditions typical unit c pd power dissipation capacitance per transceiver outputs enabled a to b c l = 0pf, f = 10mhz 38 pf c pd power dissipation capacitance per transceiver outputs disabled b to a 36.5 symbol parameter test conditions (1) min. max. unit v oha output high voltage v cca = 3v v ccb = 3v i oh = ? 0.1ma 2.9 ? v (b port to a port) v cca = 2.3v v ccb = 3v i oh = ? 8ma 2 ? v cca = 2.7v v ccb = 3v i oh = ? 12ma 2.2 ? v cca = 3v v ccb = 3v 2.4 ? v cca = 3v v ccb = 3v i oh = ? 24ma 2.2 ? v cca = 2.7v v ccb = 4.5v 2 ? v ola output low voltage v cca = 3v v ccb = 3v i ol = 0.1ma ? 0.1 v (b port to a port) v cca = 2.3v v ccb = 3v i ol = 8ma ? 0.6 v cca = 2.7v v ccb = 3v i ol = 12ma ? 0.5 v cca = 3v v ccb = 3v i ol = 24ma ? 0.5 v cca = 2.7v v ccb = 4.5v ? 0.5 symbol parameter test conditions (1) min. max. unit v ohb output high voltage v ccb = 3v v cca = 3v i oh = ? 0.1ma 2.9 ? v (a port to b port) v ccb = 3v v cca = 2.3v i oh = ? 12ma 2.4 ? v ccb = 3v v cca = 2.7v 2.4 ? v ccb = 3v v cca = 3v i oh = ? 24ma 2.2 ? v ccb = 4.5v v cca = 2.7v 3.2 ? v olb output low voltage v ccb = 3v v cca = 3v i ol = 0.1ma ? 0.1 v (a port to b port) v ccb = 3v v cca = 2.3v i ol = 12ma ? 0.4 v ccb = 3v v cca = 3v i ol = 24ma ? 0.5 v ccb = 4.5v v cca = 3v ? 0.5
industrial temperature range idt74LVCC3245A cmos octal bus transceiver with adjustable output 5 switching characteristics (1) v cca = 2.5v 0.2v v cca = 2.7v to 3.6v v ccb = 3.3v 0.3v v ccb = 5v 0.5v v ccb = 3.3v 0.3v symbol parameter min. max. min. max. min. max. unit t phl propagation delay 1 9.4 1 6 1 7.1 ns t plh ax to bx 1 9.1 1 5.3 1 7.2 t phl propagation delay 1 11.2 1 5.8 1 6.4 ns t plh bx to ax 1 9.9 1 7 1 7.6 t pzl output enable time 1 13 1 8.1 1 9.2 ns t plz oe to bx 1 12.8 1 8.4 1 9.9 t pzl output enable time 1 14.5 1 9.2 1 9.7 ns t plz oe to ax 1 12.9 1 9.5 1 9.5 t plz output disable time 1 7.1 1 5.5 1 6.6 ns t phz oe to ax 1 6.9 1 7.8 1 6.9 t plz output disable time 1 8.8 1 7.3 1 7.5 ns t phz oe to bx 1 8.9 1 7 1 7.9 note: 1. see test circuits and waveforms. t a = ? 40c to + 85c.
industrial temperature range 6 idt74LVCC3245A cmos octal bus transceiver with adjustable output t plz t pzh t phz 0v v ol+ 0.15v v oh v ol v oh- 0.15v v cca t pzl output control (low-level enabling) output waveform 1 s1 at 2 x v cc (see note b) output waveform 2 s1 at gnd ( see note b ) v cc /2 v cc /2 v cc 0v v cc /2 v cc /2 2 x v cc gnd open c l = 30pf (see note a) from output under test s1 500 ? 500 ? 0v data input v cc /2 v cc /2 v cc t su t h v cc /2 v cc 0v timing input 0v input t phl t plh output v oh v ol v cc /2 v cc /2 v cc v cc /2 v cc /2 0v input v cc /2 v cc /2 v cc t w load circuit and voltage waveforms parameter measurement information (a port) load circuit voltage waveforms setup and hold times voltage waveforms propagation delay times voltage waveforms enable and disable times notes: a. c l includes probe and jig capacitance. b. waveform 1 is for an output with internal conditions such that the output is low except when disabled by the output control. waveform 2 is for an output with internal conditions such that the output is high except when disabled by the output control. c . all input pulses are supplied by generators having the following characteristics: prr 10mhz; zo = 50 ? ; t f 2ns; t r 2ns. d. the outputs are measured one at a time with one transition per measurement. voltage waveforms pulse duration v cca = 2.5v 0.2v and v ccb = 3.3v 0.3v test conditions test s1 t pd open t plz / t pzl 2 x v cc t phz / t pzh gnd
industrial temperature range idt74LVCC3245A cmos octal bus transceiver with adjustable output 7 t plz t pzh t phz 0v v ol+ 0.15v v oh v ol v oh- 0.15v v cca t pzl output control (low-level enabling) output waveform 1 s1 at 2 x v cc (see note b) output waveform 2 s1 at gnd ( see note b ) v cc /2 v cc /2 v cc 0v v cc /2 v cc /2 2 x v cc gnd open c l = 50pf (see note a) from output under test s1 500 ? 500 ? 0v data input v cc /2 v cc /2 v cc t su t h v cc /2 v cc 0v timing input 0v input t phl t plh output v oh v ol v cc /2 v cc /2 v cc v cc /2 v cc /2 0v input v cc /2 v cc /2 v cc t w load circuit voltage waveforms setup and hold times voltage waveforms propagation delay times voltage waveforms enable and disable times load circuit and voltage waveforms parameter measurement information (b port) notes: a. c l includes probe and jig capacitance. b. waveform 1 is for an output with internal conditions such that the output is low except when disabled by the output control. waveform 2 is for an output with internal conditions such that the output is high except when disabled by the output control. c . all input pulses are supplied by generators having the following characteristics: prr 10mhz; zo = 50 ? ; t f 2ns; t r 2ns. d. the outputs are measured one at a time with one transition per measurement. test conditions test s1 t pd open t plz / t pzl 2 x v cc t phz / t pzh gnd v cca = 2.5v 0.2v and v ccb = 3.3v 0.3v voltage waveforms pulse duration
industrial temperature range 8 idt74LVCC3245A cmos octal bus transceiver with adjustable output t plz t pzh t phz 0v v ol+ 0.3v v oh t pzl v ol v oh- 0.3v 1.5v 2.7v 0v 1.5v output control v cc output waveform 1 s1 at 2 x v cc (see note b) output waveform 2 s1 at open (see note b) 2 x v cc gnd open c l = 50pf (see note a) from output under test s1 500 ? 500 ? 0v b-port input t w 0v input t phl t plh b-port output v oh v ol 50% v cc 50% v cc v cc v cc 1.5v 1.5v 50% v cc 50% v cc 50% v cc 50% v cc load circuit and voltage waveforms parameter measurement information (a port) load circuit voltage waveforms propagation delay times noninverting outputs voltage waveforms enable and disable times low- and high-level enabling notes: a. c l includes probe and jig capacitance. b. waveform 1 is for an output with internal conditions such that the output is low except when disabled by the output control. waveform 2 is for an output with internal conditions such that the output is high except when disabled by the output control. c . all input pulses are supplied by generators having the following characteristics: prr 10mhz; zo = 50 ? ; t f 2.5ns; t r 2.5ns. d. the outputs are measured one at a time with one transition per measurement. voltage waveforms pulse duration v cca = 3.6v and v ccb = 5.5v test conditions test s1 t plh / t phl open t plz / t pzl 2 x v cc t phz / t pzh gnd
industrial temperature range idt74LVCC3245A cmos octal bus transceiver with adjustable output 9 t plz t pzh t phz 0v v ol+ 0.3v v oh t pzl v ol v oh- 0.3v 1.5v 2.7v 0v 1.5v output control v cc output waveform 1 s1 at 2 x v cc (see note b) output waveform 2 s1 at open (see note b) 2 x v cc gnd open c l = 50pf (see note a) from output under test s1 500 ? 500 ? 0v b-port input t w 0v input t phl t plh a-port output v oh v ol 50% v cc 50% v cc v ccb v ccb 50% v cc 50% v cc 1.5v 1.5v 1.5v 1.5v load circuit load circuit and voltage waveforms parameter measurement information (b port) notes: a. c l includes probe and jig capacitance. b. waveform 1 is for an output with internal conditions such that the output is low except when disabled by the output control. waveform 2 is for an output with internal conditions such that the output is high except when disabled by the output control. c . all input pulses are supplied by generators having the following characteristics: prr 10mhz; zo = 50 ? ; t f 2.5ns; t r 2.5ns. d. the outputs are measured one at a time with one transition per measurement. test conditions test s1 t plh / t phl open t plz / t pzl 2 x v cc t phz / t pzh gnd v cca = 3.6v and v ccb = 5.5v voltage waveforms propagation delay times noninverting outputs voltage waveforms enable and disable times low- and high-level enabling voltage waveforms pulse duration
industrial temperature range 10 idt74LVCC3245A cmos octal bus transceiver with adjustable output t plz t pzh t phz 0v v ol+ 0.3v v oh t pzl v ol v oh- 0.3v 1.5v 2.7v 0v 1.5v output control 3.5v output waveform 1 s1 at 7v (see note b) output waveform 2 s1 at open (see note b) 7v gnd open c l = 50pf (see note a) from output under test s1 500 ? 500 ? 0v input t w 0v input t phl t plh b-port output v oh v ol 1.5v 1.5v 2.7v 2.7v 1.5v 1.5v 1.5v 1.5v 1.5v 1.5v load circuit load circuit and voltage waveforms parameter measurement information (a and b port) notes: a. c l includes probe and jig capacitance. b. waveform 1 is for an output with internal conditions such that the output is low except when disabled by the output control. waveform 2 is for an output with internal conditions such that the output is high except when disabled by the output control. c . all input pulses are supplied by generators having the following characteristics: prr 10mhz; zo = 50 ? ; t f 2.5ns; t r 2.5ns. d. the outputs are measured one at a time with one transition per measurement. test conditions test s1 t plh / t phl open t plz / t pzl 7v t phz / t pzh gnd v cca = and v ccb = 3.6v voltage waveforms propagation delay times noninverting outputs voltage waveforms enable and disable times low- and high-level enabling voltage waveforms pulse duration
industrial temperature range idt74LVCC3245A cmos octal bus transceiver with adjustable output 11 idt xx lvc xxxx xx package device type temp. range so py q pg pgg 74 small outline ic (gull wing) shrink small outline package quarter size small outline package thin shrink small outline package tssop - green octal bus transceiver with adjustable output voltage, 3-state outputs, 24ma ?40c to +85c x bus-hold c3245a no bus-hold blank ordering information corporate headquarters for sales: for tech support: 2975 stender way 800-345-7015 or 408-727-6116 logichelp@idt.com santa clara, ca 95054 fax: 408-492-8674 (408) 654-6459 www.idt.com

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