SN74LS191DR - Texas Instruments

Manufacturer Part Number

SN74LS191DR

Manufacturer

Texas Instruments

Introduction

The SN74LS191DR is a binary up/down counter from Texas Instruments' 74LS series, designed for synchronous operations.

Product Features and Performance

Synchronous counting operation

Capable of counting in both up and down directions

4-bit binary counter

High counting rate of 25 MHz

Positive edge-triggered operation for precise control

Compatible with 4.75 V to 5.25 V supply voltages

Operates within the temperature range of 0°C to 70°C

Surface mount device in a 16-SOIC package

Product Advantages

High-speed performance suitable for fast applications

Dual counting direction enhances versatility

Seamless integration with 5V systems

Compact 16-SOIC package saves space on PCB

Key Technical Parameters

Count Rate: 25 MHz

Logic Type: Binary Counter

Direction: Up, Down

Number of Elements: 1

Number of Bits per Element: 4

Voltage Supply: 4.75 V to 5.25 V

Operating Temperature: 0°C to 70°C

Trigger Type: Positive Edge

Quality and Safety Features

Manufactured by Texas Instruments, ensuring reliability and performance

Complies with standard operating conditions for digital logic circuits

Compatibility

Compatible with other 74LS series logic components for comprehensive system design

Suitable for use with 5V power supplies

Application Areas

Digital clocks and timers

Counting systems in computational machinery

Process control and automation systems

Educational and DIY electronic projects

Product Lifecycle

Currently active, with no immediate discontinuation notice, ensuring availability for new designs

Upgrades or replacements readily available within Texas Instruments' extensive portfolio

Several Key Reasons to Choose This Product

High-speed counting capability enables use in performance-critical applications.

Versatile up/down counting feature suitable for complex operations.

Texas Instruments' reliability and quality assurance.

Broad compatibility with 5V systems and other 74LS series components adds to design flexibility.

Active product status ensures long-term availability for ongoing and future projects.