74LS90 Datasheet – Decade Counter – SN74LS90

Part Number : 74LS90

Function : DECADE, DIVIDE-BY-TWELVE AND BINARY COUNTERS

Package : DIP 14 Pin Type

Manufacturers : Texas Instruments

Image :

74LS90 datasheet

Description :

Each of these monolithic counters contrains four master-slave flip-flops and additional gating to provice a divide-by-two counter and a three-stage binary counter for which the count cycle length is divide-by-five for 74LS90.

To use their maximum count length ( decade, divide-by-twelve, or four-bit binary) of these counters, the CKB input is connected to the Qa output.

Features :

1. 7490A, SN74LS90N : Decade Counters

2. 7492A, 74LS92 : Divide By-Twelve Counters,

3. 7493A, 74LS93 : 4-bit Binary Counters, SN74LS90N.

Pinouts :

Other data sheets within the file :

5490A, 5492A, 5493A, 54LS90, 54LS92

 

74LS90 Datasheet PDF Download


74LS90 pdf