SN74LS90N Datasheet PDF – Decade Counter, 14 Pin – TI

This is one of the semiconductor types.

The Package is PDIP 14 Pin Type.

This part name is SN74LS90N.

This product has Decade Counter function.

The manufacturers of this product is Texas Instruments.

See the preview image and the PDF file for more information.

Image

SN74LS90N datasheet
Description

Each of these monolithic counters contains four master-slave flip-flops and additional gating to provide a divide-by-two counter and a three-stage binary counter for which the count cycle length is divide-by-five for the ‘7490A and ’74LS90, divide-by-six for the ‘7492A and ’74LS92, and the divide-by eight for the ‘7493A and ’74LS93. All of these counters have a gated zero reset and the ’90A and ‘LS90 also have gated set-to-nine inputs for use in BCD nine’s complement applications.

 

Pinout
SN74LS90N pinout
Features

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. The input count pulses are applied to CKA input and the outputs are as described in the appropriate function table. A symmetrical divide-by-ten count can be obtained from the ‘7490A or ’74LS90 counters by connecting the QD output to the CKA input and applying the input count to the CKB input which gives a divide-by-ten square wave at output QA.

  • ’90A, ‘LS90 . . . Decade Counters ( SN74LS90N )
  • ’92A, ‘LS92 . . . Divide By-Twelve Counters
  • ’93A, ‘LS93 . . . 4-Bit Binary Counters

 

 

SN74LS90N Datasheet PDF Download
SN74LS90N pdf

Official Homepage : https://www.ti.com/product/SN74LS90N

Related articles across the web

IC 7490 Datasheet PDF – Decade and Binary Counters

Part Number : 7490

Function : Decade and Binary Counter

Package : DIP 14 Pin Type

Manufacturers : Fairchild Semiconductor

Pinouts :

7490 Pinout

 

Description :

The DM7490A monolithic counter contains four master slave flip-flops and additional gating to provide a divide-by two counter and a three-stage binary counter for which the count cycle length is divide-by-five. The counter has a gated zero reset and also has gated set to-nine inputs for use in BCD nine’s complement applications.

To use the maximum count length (decade or four-bit binary), the B input is connected to the QAoutput. The input count pulses are applied to input A and the outputs are as described in the appropriate truth table. A symmetrical divide-by-ten count can be obtained from the counters by connecting the QDoutput to the A input and applying the input count to the B input which gives a divide-by-ten square wave at output QA.

Logic Diagram
IC 7490 Datasheet PDF
Other data sheets within the file : 7490, DM7490A, DM7490AN

IC 7490 Datasheet PDF

IC 7490 Datasheet PDF