? 2004 fairchild semiconductor corporation ds500048 www.fairchildsemi.com october 1996 revised october 2004 74vcx162245 low voltage 16-bit bidirectional transceiver with 3.6v tolerant inputs and outputs and 26 ? series resistors in a port outputs 74vcx162245 low voltage 16-bit bidirectional transceiver with 3.6v tolerant inputs and outputs and 26 ? series resistors in a port outputs general description the vcx162245 contains sixteen non-inverting bidirec- tional buffers with 3-state outputs and is intended for bus oriented applications. the device is byte controlled. each byte has separate 3-state control inputs which can be shorted together for full 16-bit operation. the t/r inputs determine the direction of data flow through the device. the oe inputs disable both the a and b ports by placing them in a high impedance state. the 74vcx162245 is designed for low voltage (1.4v to 3.6v) v cc applications with i/o compatibility up to 3.6v. the 74vcx162245 is also designed with 26 ? series resis- tance in the a port outputs. this design reduces line noise in applications such as memory address drivers, clock driv- ers, and bus transceivers/transmitters. the 74vcx162245 is fabricated with an advanced cmos technology to achieve high speed operation while maintain- ing low cmos power dissipation. features 1.4v to 3.6v v cc supply operation 3.6v tolerant inputs and outputs 26 ? series resistors in a port outputs t pd (b to a) 3.4 ns max for 3.0v to 3.6v v cc power-down high impedance inputs and outputs supports live insertion/withdrawal (note 1) static drive (i oh /i ol a outputs) 12 ma @ 3.0v v cc uses patented noise/emi reduction circuitry latchup performance exceeds 300 ma esd performance: human body model > 2000v machine model > 200v note 1: to ensure the high-impedance state during power up or power down, oe should be tied to v cc through a pull-up resistor; the minimum value of the resistor is determined by the current-sourcing capability of the driver. ordering code: devices also available in tape and reel. specify by appending the suffix letter ?x? to the ordering code. logic symbol pin descriptions order number package number package description 74VCX162245MTD mtd48 48-lead thin shrink small outline package (tssop), jedec mo-153, 6.1mm wide pin description names oe n output enable input t/r n transmit/receive input a 0 ? a 15 side a inputs or 3-state outputs b 0 ? b 15 side b inputs or 3-state outputs
www.fairchildsemi.com 2 74vcx162245 connection diagram truth tables h = high voltage level l = low voltage level x = immaterial (high or low, inputs and i/o ? s may not float) z = high impedance logic diagram inputs outputs oe 1 t/r 1 l l bus b 0 ? b 7 data to bus a 0 ? a 7 l h bus a 0 ? a 7 data to bus b 0 ? b 7 h x high z state on a 0 ? a 7 , b 0 ? b 7 inputs outputs oe 2 t/r 2 l l bus b 8 ? b 15 data to bus a 8 ? a 15 l h bus a 8 ? a 15 data to bus b 8 ? b 15 h x high z state on a 8 ? a 15 , b 8 ? b 15
3 www.fairchildsemi.com 74vcx162245 absolute maximum ratings (note 2) recommended operating conditions (note 4) note 2: the ? absolute maximum ratings ? are those values beyond which the safety of the device cannot be guaranteed. the device should not be operated at these limits. the parametric values defined in the electrical characteristics tables are not guaranteed at the absolute maximum rat- ings. the recommended operating conditions tables will define the condi- tions for actual device operation. note 3: i o absolute maximum rating must be observed. note 4: floating or unused pins (inputs or i/o's) must be held high or low. dc electrical characteristics supply voltage (v cc ) ? 0.5v to + 4.6v dc input voltage (v i ) ? 0.5v to + 4.6v output voltage (v o ) outputs 3-state ? 0.5v to + 4.6v outputs active (note 3) ? 0.5 to v cc + 0.5v dc input diode current (i ik ) v i < 0v ? 50 ma dc output diode current (i ok ) v o < 0v ? 50 ma v o > v cc + 50 ma dc output source/sink current (i oh /i ol ) 50 ma dc v cc or ground current per supply pin (i cc or ground) 100 ma storage temperature range (t stg ) ? 65 c to + 150 c power supply operating 1.4v to 3.6v data retention only 1.2v to 3.6v input voltage ? 0.3v to 3.6v output voltage (v o ) output in active states 0v to v cc output in 3-state 0.0v to 3.6v output current in i oh /i ol -a outputs v cc = 3.0v to 3.6v 12 ma v cc = 2.3v to 2.7v 8 ma v cc = 1.65v to 1.95v 3 ma output current in i oh /i ol -b outputs v cc = 3.0v to 3.6v 24ma v cc = 2.3v to 2.7v 18ma v cc = 1.65v to 2.3v 6ma free air operating temperature (t a ) ? 40 c to + 85 c minimum input edge rate ( ? t/ ? v) v in = 0.8v to 2.0v, v cc = 3.0v 10 ns/v symbol parameter conditions v cc min max units (v) v ih high level input voltage 2.7 - 3.6 2.0 v 2.3 - 2.7 1.6 1.65 - 2.3 0.65 x v cc 1.4 - 1.6 0.65 x v cc v il low level input voltage 2.7 - 3.6 0.8 v 2.3 - 2.7 0.7 1.65 - 2.3 0.35 x v cc 1.4 - 1.6 0.35 x v cc v oh high level output voltage i oh = ? 100 a 2.7 - 3.6 v cc - 0.2 v a outputs i oh = ? 6 ma 2.7 2.2 i oh = ? 8 ma 3.0 2.4 i oh = ? 12 ma 3.0 2.2 i oh = ? 100 a 2.3 - 2.7 v cc - 0.2 i oh = ? 4 ma 2.3 2.0 i oh = ? 6 ma 2.3 1.8 i oh = ? 8 ma 2.3 1.7 i oh = ? 100 a 1.65 - 2.3 v cc - 0.2 i oh = ? 3 ma .65 1.4 i oh = ? 100 a 1.4 - 1.6 v cc - 0.2 i oh = ? 1 ma 1.4 1.05
www.fairchildsemi.com 4 74vcx162245 dc electrical characteristics (continued) note 5: outputs disabled or 3-state only. symbol parameter conditions v cc min max units (v) v oh high level output voltage i oh = ? 100 a 2.7 - 3.6 v cc - 0.2 v b outputs i oh = ? 12 ma 2.7 2.2 i oh = ? 18 ma 3.0 2.4 i oh = ? 24 ma 3.0 2.2 i oh = ? 100 a 2.7 - 3.6 v cc - 0.2 i oh = ? 6 ma 2.3 2.0 i oh = ? 12 ma 2.3 1.8 i oh = ? 18 ma 2.3 1.7 i oh = ? 100 a1.65 - 2.3v cc - 0.2 i oh = ? 6 ma 1.65 1.25 i oh = ? 100 a 1.4 - 1.6 v cc - 0.2 i oh = ? 2 ma 1.4 1.05 v ol low level output voltage i ol = 100 a 2.7 - 3.6 0.2 v a outputs i ol = 6 ma 2.7 0.4 i ol = 8 ma 3.0 0.55 i ol = 12 ma 3.0 0.8 i ol = 100 a 2.3 - 2.7 0.2 i ol = 6 ma 2.3 0.4 i ol = 8 ma 2.3 0.6 i ol = 100 a 1.65 - 2.3 0.2 i ol = 3 ma 1.65 0.3 i ol = 100 a 1.4 - 1.6 0.2 i ol = 2 ma 1.4 0.35 v ol low level output voltage i ol = 100 a 2.7 - 3.6 0.2 v b outputs i ol = 12 ma 2.7 0.4 i ol = 18 ma 3.0 0.4 i ol = 24 ma 3.0 0.55 i ol = 100 a 2.3 - 2.7 0.2 i ol = 12 ma 2.3 0.4 i ol = 18 ma 2.3 0.6 i ol = 100 a 1.65 - 2.3 0.2 i ol = 6 ma 1.65 0.3 i ol = 100 a 1.4 - 1.6 0.2 i ol = 2 ma 1.4 0.35 i i input leakage current 0v v i 3.6v 2.7 - 3.6 5.0 a i oz 3-state output leakage 0v v o 3.6v 2.7 - 3.6 10 a v i = v ih or v il i off power off leakage current 0v (v i , v o ) 3.6v 0 10 a i cc quiescent supply current v i = v cc or gnd 2.7 - 3.6 20 a v cc (v i , v o ) 3.6v (note 5) 2.7 - 3.6 20 ? i cc increase in i cc per input v ih = v cc ? 0.6v 2.7 - 3.6 750 a
5 www.fairchildsemi.com 74vcx162245 ac electrical characteristics (note 6) note 6: for c l = 50pf, add approximately 300ps to the ac maximum specification. note 7: skew is defined as the absolute value of the difference between the actual propagation delay for any two separate outputs of th e same device. the specification applies to any outputs switching in the same direction, either high-to-low (t oshl ) or low-to-high (t oslh ). symbol parameter conditions v cc t a = ? 40 c to + 85 c units figure (v) min max number t phl , propagation delay c l = 30 pf, r l = 500 ? 3.3 0.3 0.8 3.4 ns figures 1, 2 t plh b to a 2.5 0.2 1.0 4.3 1.8 0.15 1.5 8.6 c l = 15 pf, r l = 2k ? 1.5 0.1 1.0 17.2 figures 5, 6 t pzl , output enable time c l = 30 pf, r l = 500 ? 3.3 0.3 0.8 4.2 ns figures 1, 3, 4 t pzh b to a 2.5 0.2 1.0 5.7 1.8 0.15 1.5 9.8 c l = 15 pf, r l = 2k ? 1.5 0.1 1.0 19.6 figures 5, 7, 8 t plz , output disable time c l = 30 pf, r l = 500 ? 3.3 0.3 0.8 4.1 ns figures 1, 3, 4 t phz b to a 2.5 0.2 1.0 4.8 1.8 0.15 1.5 8.6 c l = 15 pf, r l = 2k ? 1.5 0.1 1.0 17.2 figures 5, 7, 8 t phl , propagation delay c l = 30 pf, r l = 500 ? 3.3 0.3 0.8 2.5 ns figures 1, 2 t plh a to b 2.5 0.2 1.0 3.0 1.8 0.15 1.5 6.0 c l = 15 pf, r l = 2k ? 1.5 0.1 1.0 12.0 figures 5, 6 t pzl , output enable time c l = 30 pf, r l = 500 ? 3.3 0.3 0.8 3.5 ns figures 1, 3, 4 t pzh a to b 2.5 0.2 1.0 4.1 1.8 0.15 1.5 8.2 c l = 15 pf, r l = 2k ? 1.5 0.1 1.0 16.4 figures 5, 7, 8 t plz , output disable time c l = 30 pf, r l = 500 ? 3.3 0.3 0.8 3.5 ns figures 1, 3, 4 t phz a to b 2.5 0.2 1.0 3.8 1.8 0.15 1.5 6.8 c l = 15 pf, r l = 2k ? 1.5 0.1 1.0 13.6 figures 5, 7, 8 t oshl , output-to-output skew c l = 30 pf, r l = 500 ? 3.3 0.3 0.5 ns t oslh (note 7) 2.5 0.2 0.5 1.8 0.15 0.75 c l = 15 pf, r l = 2k ? 1.5 0.1 1.5
www.fairchildsemi.com 6 74vcx162245 dynamic switching characteristics capacitance symbol parameter conditions v cc t a = + 25 c units (v) typical v olp quiet output dynamic c l = 30 pf, v ih = v cc , v il = 0v 1.8 0.25 v peak v ol , a to b 2.5 0.6 3.3 0.8 v olp quiet output dynamic c l = 30 pf, v ih = v cc , v il = 0v 1.8 0.15 v peak v ol , b to a 2.5 0.25 3.3 0.35 v olv quiet output dynamic c l = 30 pf, v ih = v cc , v il = 0v 1.8 ? 0.25 v valley v ol , a to b 2.5 ? 0.6 3.3 ? 0.8 v olv quiet output dynamic c l = 30 pf, v ih = v cc , v il = 0v 1.8 ? 0.15 v valley v ol , b to a 2.5 ? 0.25 3.3 ? 0.35 v ohv quiet output dynamic c l = 30 pf, v ih = v cc , v il = 0v 1.8 1.5 v valley v oh , a to b 2.5 1.9 3.3 2.2 v ohv quiet output dynamic c l = 30 pf, v ih = v cc , v il = 0v 1.8 1.55 v valley v oh , b to a 2.5 2.05 3.3 2.65 symbol parameter conditions t a = + 25 cunits c in input capacitance v cc = 1.8v, 2.5v, or 3.3v, v i = 0v or v cc 6pf c i/o output capacitance v i = 0v, or v cc , v cc = 1.8v, 2.5v or 3.3v 7 pf c pd power dissipation capacitance v i = 0v or v cc , f = 10 mhz 20 pf v cc = 1.8v, 2.5v or 3.3v
7 www.fairchildsemi.com 74vcx162245 ac loading and waveforms (v cc 3.3v 0.3v to 1.8v 0.15v) figure 1. ac test circuit figure 2. waveform for inverting and non-inverting functions figure 3. 3-state output high enable and disable times for low voltage logic figure 4. 3-state output low enable and disable times for low voltage logic test switch t plh , t phl open t pzl , t plz 6v at v cc = 3.3 0.3v; v cc x 2 at v cc = 2.5 0.2v; 1.8v 0.15v t pzh , t phz gnd symbol v cc 3.3v 0.3v 2.5v 0.2v 1.8v 0.15v v mi 1.5v v cc /2 v cc /2 v mo 1.5v v cc /2 v cc /2 v x v ol + 0.3v v ol + 0.15v v ol + 0.15v v y v oh ? 0.3v v oh ? 0.15v v oh ? 0.15v
www.fairchildsemi.com 8 74vcx162245 ac loading and waveforms (v cc 1.5v 0.1v) figure 5. ac test circuit figure 6. waveform for inverting and non-inverting functions figure 7. 3-state output high enable and disable times for low voltage logic figure 8. 3-state output low enable and disable times for low voltage logic test switch t plh , t phl open t pzl , t plz v cc x 2 at v cc = 1.5v 0.1v t pzh , t phz gnd symbol v cc 1.5v 0.1v v mi v cc /2 v mo v cc /2 v x v ol + 0.1v v y v oh ? 0.1v
9 www.fairchildsemi.com 74vcx162245 low voltage 16-bit bidirectional transceiver with 3.6v tolerant inputs and outputs and 26 ? series resistors in a port outputs physical dimensions inches (millimeters) unless otherwise noted 48-lead thin shrink small outline package (tssop), jedec mo-153, 6.1mm wide package number mtd48 fairchild does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and fairchild reserves the right at any time without notice to change said circuitry and specifications. life support policy fairchild ? s products are not authorized for use as critical components in life support devices or systems without the express written approval of the president of fairchild semiconductor corporation. as used herein: 1. life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be rea- sonably expected to result in a significant injury to the user. 2. a critical component in any component of a life support device or system whose failure to perform can be rea- sonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. www.fairchildsemi.com
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