74AC240 is an advanced high-speed CMOS OCTAL BUS BUFFER (3-STATE) fabricated with sub-micron silicon gate and double-layer metal wiring C2MOS tecnology. This device is designed to be used with 3 state memory address drivers, etc.
The 74AC240 is a high‑speed CMOS octal bus buffer featuring three‑state outputs and inverted logic. It is designed for use with memory address drivers and includes ESD protection up to 2 kV.
The document provides electrical characteristics, pin descriptions, mechanical dimensions for DIP‑20, SOP, and TSSOP packages, as well as absolute maximum ratings and recommended operating conditions.
| Propagation delay (tpp) | 4.2 ns typ. at VCC = 5 V |
|---|---|
| Low‑power dissipation (Ilog) | 4 µA max at 25 °C |
| Operating voltage range | 2 V to 6 V |
| Maximum supply voltage | -0.5 V to +7 V |
The device is specified to operate with a supply voltage between 2 V and 6 V.
The absolute maximum supply voltage is –0.5 V to +7 V.
Typical propagation delay is 4.2 ns when powered at 5 V.
All inputs and outputs have 2 kV ESD immunity.