Fairchild DM74LS191N

二进制计数器14.75 V ~ 5.25 V

Overview

The DM74LS191N TTL IC is a synchronous 4-bit binary up/down counter. Simultaneous clocking of all flip-flops ensures synchronous operation, which means the outputs shift together, guided by the steering logic. This method prevents the output counting spikes typically seen with asynchronous (ripple clock) counters.

Carry/borrow output for cascading

Features

74LS Series
Embedded in the 16-DIP (0.300, 7.62mm) package
4 bits per element

Through Hole Mounting Type

Applications

There are a lot of ON Semiconductor
DM74LS191N Counters & Dividers applications.

• Timers
• Frequency dividers
• Time-delay circuits
• Analog multiplexing and demultiplexing
• Digital multiplexing and demultiplexing
• Signal gating
• Frequency dividing circuits
• Time delay circuits
• Communications Digital Frequency Synthesizers;
• VHF, UHF, FM, AM, etc.