ONSEMI MM74HC540WM 3-State Inverting Octal Buffer, SOIC 20, 2V to 6V

The ONSEMI MM74HC540WM is an inverting octal 3-state buffer that utilises advanced silicon-gate CMOS technology. This integrated circuit delivers high drive current outputs, enabling high-speed operation even when driving large bus capacitances. It achieves speeds comparable to low-power Schottky devices while retaining the advantages of CMOS circuitry, including high noise immunity and low power consumption.

With a fan-out of 15 LS-TTL equivalent inputs, this buffer can drive multiple loads effectively. The 3-state control gate operates as a two-input NOR, ensuring that if either G1 or G2 is HIGH, all eight outputs enter the high-impedance state, allowing for connection to system buses. The pin-out is optimised for enhanced PC board layout, with inputs and outputs arranged for convenience.

Key Features

• Inverting octal 3-state buffer
• Advanced silicon-gate CMOS technology
• High drive current outputs for high-speed operation
• Low quiescent current: 80µA maximum
• Typical propagation delay: 12ns
• 3-state outputs for connection to system buses
• All inputs protected against static discharge by diodes to VCC and ground

Applications

The MM74HC540WM is suitable for a variety of applications, including industrial control systems, signal processing circuits, and communications networking equipment. Its robust design and reliable performance make it a versatile choice for digital logic designs.

Specifications

• Logic Device Type: Buffer, Inverting
• Logic Family / Base Number: 74HC540
• IC Case / Package: SOIC
• No. of Pins: 20
• Supply Voltage Min: 2V
• Supply Voltage Max: 6V
• Logic IC Family: 74HC
• Logic IC Base Number: 74540
• Operating Temperature Min: -40°C
• Operating Temperature Max: 85°C
• MSL: MSL 3 - 168 hours
• Package Dimensions: Height 43mm,