74ACT521SC - onsemi

Manufacturer Part Number

74ACT521SC

Manufacturer

onsemi

Introduction

The 74ACT521SC is a high-speed CMOS identity comparator from onsemi, designed for logic comparison applications involving 8-bit words.

Product Features and Performance

8-bit comparison for identity checking

Active low output indicates A=B

High-speed operation with 10ns maximum propagation delay at 5V, 50pF

Low quiescent current of 4 µA ensuring energy efficiency

Operates within 4.5V to 5.5V supply voltage range

Can drive 24mA both high and low outputs

Product Advantages

Energy efficient due to low quiescent current

Fast response time enhances performance in critical applications

Direct compatibility with 5V systems

Key Technical Parameters

Number of Bits: 8

Output: Active Low, A=B

Voltage Supply: 4.5V ~ 5.5V

Current Output High, Low: 24mA

Max Propagation Delay @ V, Max CL: 10ns @ 5V, 50pF

Operating Temperature: -40°C ~ 85°C

Quality and Safety Features

Operates reliably within industrial temperature ranges from -40°C to 85°C

Compatibility

Compatible with 5V power supply systems

Integrated into 20-SOIC package compatible with surface mount technology

Application Areas

Used in systems requiring precise word equality checks such as data processors, communication systems, and control units

Product Lifecycle

Currently listed as Obsolete

Consider checking for newer replacement models or upgrades

Several Key Reasons to Choose This Product

Optimized for low power consumption with only 4 µA quiescent current

Fast operation with up to 10ns propagation delay ensures timely response in systems

Robust performance with operating temperature ranging from -40°C to 85°C

Direct support for 5V operations simplifying power requirements

Suitable for precision applications due to accurate 8-bit comparison capabilities