pinout circuits

Main site (French only)

Circuits Index

Integrated Circuits

Discretes Circuits

Others

Packages types

Pinout circuits

Miscellaneous

Contact

index

digchip

pinout circuits

part number : 74490
Description : Dual 4-bit asynchronous decade counters with set(9) and reset.

pinout
____________
|            |
/1CLK| 1        16|  VCC
 1RST| 2        15|/2CLK
  1QA| 3        14| 2RST
 1SET| 4        13|  2Q0
  1QB| 5        12| 2SET
  1QC| 6        11|  2Q1
  1QD| 7        10|  2Q2
  GND| 8         9|  2Q3
|____________|