© 2003 Fairchild Semiconductor Corporation

DS005216

www.fairchildsemi.com

February 1984

Revised December 2003

MM74HC4020 • MM74HC4040

14-Stage Binary Counter • 12-Stage Binary Counter

General Description

The MM74HC4020, MM74HC4040, are high speed binary

ripple carry counters. These counters are implemented uti-

lizing advanced silicon-gate CMOS technology to achieve

speed performance similar to LS-TTL logic while retaining

the low power and high noise immunity of CMOS.

The MM74HC4020 is a 14 stage counter and the

MM74HC4040 is a 12-stage counter. Both devices are

incremented on the falling edge (negative transition) of the

input clock, and all their outputs are reset to a low level by

applying a logical high on their reset input.

These devices are pin equivalent to the CD4020 and

CD4040 respectively. All inputs are protected from damage

ground.

Features

s Typical propagation delay: 16 ns

s Wide operating voltage range: 2–6V

s Low input current: 1

µA maximum

s Low quiescent current: 80

µA maximum (74HC Series)

s Output drive capability: 10 LS-TTL loads

Ordering Code:

Note 1: Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.

Connection Diagrams

MM74HC4020

MM74HC4040

Order Number

Package Number

Package Description

MM74HC4020M

(Note 1)

M16A

16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150" Narrow

MM74HC4020SJ

M16D

16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide

MM74HC4020N

N16E

16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide

MM74HC4040M

(Note 1)

M16A

16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150" Narrow

MM74HC4040SJ

(Note 1)

M16D

16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide

MM74HC4040MTC

(Note 1)

MTC16

16-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide

MM74HC4040N

N16E

16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide