MM74C922N - onsemi

Manufacturer Part Number

MM74C922N

Manufacturer

onsemi

Introduction

The MM74C922N is a 16-Key Encoder device designed to simplify the interface between a matrix keyboard and microcontroller or other logic circuitry.

Product Features and Performance

Integrated 16-key encoder circuit

1 x 8:4 circuit configuration

Supports a single independent circuit operation

Capable of sourcing 15mA and sinking 16mA output current

Operable with a single supply voltage

Wide supply voltage range from 3V to 15V

Product Advantages

Simplifies keyboard to microcontroller interfacing

Reduces I/O pins needed for keypad interface

Built-in debounce and stabilization, reducing external component needs

Compatible with a broad range of supply voltages

Key Technical Parameters

Circuit Type: 1 x 8:4

Current Output High, Low: 15mA, 16mA

Voltage Supply: 3V ~ 15V

Operating Temperature: -40°C ~ 85°C

Mounting Type: Through Hole

Package / Case: 18-DIP

Quality and Safety Features

Standard operating temperature range ensuring reliability in various environments

Compatibility

Easily interfaced with most microcontrollers

Application Areas

Ideal for keyboard or keypad interface in consumer electronics

Suitable for electronic voting machines, security systems, and industrial control panels

Product Lifecycle

Obsolete status indicates the product is nearing the end of its lifecycle

Replacements or upgrades may be available but should be confirmed with the manufacturer

Several Key Reasons to Choose This Product

Reduces complexity in designing keyboard interfaces

Saves valuable GPIO pins on microcontrollers

Onboard debounce logic minimizes external components

Versatile supply voltage compatibility

Simplifies design and reduces time-to-market for products incorporating keypad interfaces