1. general description the 74lv244at is an 8-bit buffer/line driver with 3-state outputs and ttl inputs. the device features two output enables (1oe and 2oe ). a high on noe causes the associated outputs to assume a high-impedance off-state. designed to operate over a v cc range from 4.5 v to 5.5 v, the inputs are ttl compatible, which allows the device to be used to translate from 3.3 v to 5 v. schmitt-trigger action at all inputs makes the circuit tolerant of slower input rise and fall times. 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 ? direct interface with ttl levels ? supply voltage range from 4.5 v to 5.5 v ? typical t pd of 2.8 ns at 5 v ? typical v ol(p) < 0.8 v at v cc = 5 v, t amb = 25 ? c ? typical v oh(v) > 2.3 v at v cc = 5 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 150 v ? cdm jesd22-c101e exceeds 2 kv ? specified from ? 40 ? c to +85 ? c and from ? 40 ? c to +125 ? c 74lv244at octal buffer/line driver; 3-state rev. 1 ? 23 november 2016 product data sheet downloaded from: http:///
? nexperia b.v. 2017. all rights reserved 74lv244at all information provided in this document is subject to legal disclaimers. product data sheet rev. 1 ? 23 november 2016 2 of 13 nexperia 74lv244at octal buffer/line driver; 3-state 3. ordering information 4. functional diagram table 1. ordering information type number package temperature range name description version 74LV244ATPW ? 40 ? c to +125 ? c tssop20 plastic thin shrink small outline package; 20 leads; body width 4.4 mm sot360-1 fig 1. logic symbol fig 2. iec logic symbol p q d $ $ $ $ < |