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
a73 Non-inverting 3-state outputs
a73 2-way asynchronous data bus communication
a73 Low-power dissipation
a73 Complies with JEDEC standard no. 7A
a73 ESD protection:
a78 HBM EIA/JESD22-A114-B exceeds 2000 V
a78 MM EIA/JESD22-A115-A exceeds 200 V.
a73 Multiple package options
a73 Specified from −40 °Cto+80°C and from −40 °C to +125 °C.
74HC243
Quad bus transceiver; 3-state
Rev. 03 — 12 November 2004 Product data sheet