1. general description the 74ahcv245a is an 8-bit transceiver with 3-state outputs and schmitt trigger inputs. the device features an output enable (oe ) and send/receive (dir) for direction control. a high on oe causes the outputs to assume a high-impedance off-state. inputs are overvoltage tolerant. this feature a llows the use of these devices as translators in mixed voltage environments. the data (an, bn) and control (oe and dir) inputs include schmitt trigger inputs. these inputs can of transform slowly changing input si gnals into sharply defined, jitter-free output signals. this device is ideal for drivi ng bus lines or buffer memory address registers. it features inputs and outputs on opposite sides of the package to facilitate printed circuit board layout. this device is fully specified for pa rtial power-down applications using i off . the i off circuitry disables the output, preventin g the damaging backflow current through the device when it is powered down. 2. features and benefits ? wide supply voltage range from 1.8 v to 5.5 v ? typical t pd of 3.2 ns at 5 v ? typical v ol(p) < 0.8 v at v cc = 3.3 v, t amb = 25 ? c ? typical v oh(v) > 2.3 v at v cc = 3.3 v, t amb = 25 ? c ? supports mixed-mode voltage operation on all ports ? i off circuitry provides partial power-down mode operation ? latch-up performance exceeds 250 ma per jesd 78 class ii ? esd protection: ? hbm ansi/esda/jedec js-001 class 2 exceeds 3 kv ? mm jesd22-a115-a exceeds 200 v ? cdm jesd22-c101e exceeds 2 kv ? specified from ? 40 ? c to +85 ? c and from ? 40 ? c to +125 ? c 74ahcv245a octal bus transceiver; 3-state rev. 2 8 november 2016 product data sheet downloaded from: http:///
? nexperia b.v. 2017. all rights reserved 74ahcv245a all information provided in this document is subject to legal disclaimers. product data sheet rev. 2 8 november 2016 2 of 16 nexperia 74ahcv245a octal bus transceiver; 3-state 3. ordering information 4. functional diagram table 1. ordering information type number package temperature range name description version 74AHCV245APW ? 40 ? c to +125 ? c tssop20 plastic thin shrink sm all outline package; 20 leads; body width 4.4 mm sot360-1 fig 1. logic symbol fig 2. iec logic symbol d d d ' , 5 % % % % % % % % $ $ $ $ $ $ $ $ 2 ( * ( 1 ( 1 p q d downloaded from: http:///
? nexperia b.v. 2017. all rights reserved 74ahcv245a all information provided in this document is subject to legal disclaimers. product data sheet rev. 2 8 november 2016 3 of 16 nexperia 74ahcv245a octal bus transceiver; 3-state 5. pinning information 5.1 pinning 5.2 pin description fig 3. pin configuration tssop20 $ + & |