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.

FEATUREs
■ Non-inverting 3-state outputs
■ 2-way asynchronous data bus communication
■ Low-power dissipation
■ Complies with JEDEC standard no. 7A
■ ESD protection:
    ◆ HBM EIA/JESD22-A114-B exceeds 2000 V
    ◆ MM EIA/JESD22-A115-A exceeds 200 V.
■ Multiple package options
■ Specified from −40 °C to +80 °C and from −40 °C to +125 °C.