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74HC243

Quad bus transceiver; 3-state

NXP Semiconductors. 

74HC243

Quad bus transceiver; 3-state

Rev. 03 — 12 November 2004

Product data sheet

1. General description

The 74HC243 is a high-speed Si-gate CMOS device and is pin compatible with low power

Schottky TTL (LSTTL). The 74HC243 is specified in compliance with JEDEC

standard no. 7A.

The 74HC243 is a quad bus transceiver featuring non-inverting 3-state bus compatible

outputs in both send and receive directions. The 74HC243 is designed for 4-line

asynchronous 2-way data communications between data buses.

The output enable inputs (OEA and OEB) can be used to isolate the buses.

The 74HC243 is similar to the 74HC242 but has non-inverting (true) outputs.

2. Features

s Non-inverting 3-state outputs

s 2-way asynchronous data bus communication

s Low-power dissipation

s Complies with JEDEC standard no. 7A

s ESD protection:

x HBM EIA/JESD22-A114-B exceeds 2000 V

x MM EIA/JESD22-A115-A exceeds 200 V.

s Multiple package options

s Specified from −40 °C to +80 °C and from −40 °C to +125 °C.

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