74LVC245A Datasheet, PDF (1/17 Pages) NXP Semiconductors – Octal bus transceiver with direction pin with 5-volt tolerant inputs/outputs 3-State

74LVC245A; 74LVCH245A
Octal bus transceiver; 3-state
Rev. 05 — 25 August 2009
Product data sheet
1. General description
The 74LVC245A; 74LVCH245A are 8-bit transceivers featuring non-inverting 3-state bus
compatible outputs in both send and receive directions. The device features an output
enable (OE) input for easy cascading and a send/receive (DIR) input for direction control.
OE controls the outputs so that the buses are effectively isolated.
Inputs can be driven from either 3.3 V or 5 V devices. When disabled, up to 5.5 V can be
applied to the outputs. These features allow the use of these devices in mixed
3.3 V and 5 V applications.
The 74LVCH245A bus hold on data inputs eliminates the need for external pull-up
resistors to hold unused inputs.
2. Features
I 5 V tolerant inputs/outputs for interfacing with 5 V logic
I Wide supply voltage range from 1.2 V to 3.6 V
I CMOS low-power consumption
I Direct interface with TTL levels
I Inputs accept voltages up to 5.5 V
I High-impedance when V_CC = 0 V
I Bushold on all data inputs (74LVCH245A only)
I Complies with JEDEC standard no. 8-1A
I ESD protection:
N HBM JESD22-A114E exceeds 2000 V
N MM JESD22-A115-A exceeds 200 V
I Specified from −40 °C to +85 °C and −40 °C to +125 °C