Product Summary

The HEF4520B is a dual 4-bit internally synchronous binary counter. The counter has an active HIGH clock input (CP0) and an 

active LOW clock input (CP1), buffered outputs from all four bit positions (O0 to O3) and an active HIGH overriding 

asynchronous master reset input (MR).

Image Part No Mfg Description Data Sheet Download Pricing
(USD)
Quantity
HEF4520BT,652
HEF4520BT,652

NXP Semiconductors

Counter ICs DUAL COUNTER BINARY

Data Sheet

0-1: $0.13
1-25: $0.12
25-100: $0.11
100-250: $0.10
HEF4520BTD
HEF4520BTD

NXP Semiconductors

Counter ICs DUAL COUNTER BINARY

Data Sheet

Negotiable 
HEF4520BT,653
HEF4520BT,653

NXP Semiconductors

Counter ICs DUAL BINARY COUNTER

Data Sheet

0-1: $0.29
1-25: $0.25
25-100: $0.22
100-250: $0.19