© 2003 Fairchild Semiconductor Corporation DS005216 www.fairchildsemi.com
Februa ry 198 4
Revised December 2003
MM74HC4020 • MM74HC4040 14-Stage Binary Counter • 12-Stage Binary Counter
MM74HC4020 • MM74HC4040
14-Stage Binary Counter • 12-Stage Binary Counter
General Description
The MM7 4HC4020, M M74HC4040 , are high spe ed binary
ripple c arr y co unters. T hese coun ter s ar e imple mented uti-
lizing advanced silicon-gate CMOS technology to achieve
speed performance s imilar to L S-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 fallin g edge (negative tr ansition) of the
input clo ck, and all th eir outp uts ar e reset to a lo w leve l 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
due to static discharge by protection diodes to VCC and
ground.
Features
■Typical propagation delay: 16 ns
■Wide operat i ng voltage range: 2–6V
■Low input current: 1 µA maximum
■Low quiescent current: 80 µA maximum (74HC Series)
■Output drive capability: 10 LS-TTL loads
Ordering Code:
Note 1: Devices also availab le in Tape and Reel. S pecify by append ing the suffix let t er “X” to th e ordering c ode.
Connection Diagrams
MM74HC4020 MM74HC4040
Order Number Package Number Package Descripti o n
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