The 74HC/HCT243 is a high-speed Si-gate CMOS device with non-inverting 3-state bus compatible outputs, both in the send and receive directions. They are designed for 4-line asynchronous 2-way data communications between data buses.
The Philips 74HC/HCT243 is a high-speed Si-gate CMOS integrated circuit designed for 4-line asynchronous 2-way data communications between data buses. The device features non-inverting 3-state bus compatible outputs in both send and receive directions, allowing the output enable inputs to isolate the buses when necessary.
This document provides product specifications including typical symbol parameters, pin descriptions, functional tables, DC and AC characteristics for both HC and HCT variants, and package outline references. It specifies compliance with JEDEC standard no. 7A.
| Logic Category | MSI |
|---|---|
| Device Type | Quad bus transceiver; 3-state |
| Propagation Delay (Typical) | 6 ns |
| Input Capacitance | 3.5 pF |
| Operating Temperature Range (HC) | -40 to +85 °C |
The '243' model has non-inverting (true) outputs, whereas the '242' does not.
It features non-inverting 3-state bus compatible outputs in both send and receive directions.