74F161A_07 Datasheet, PDF (1/11 Pages) Fairchild Semiconductor – Synchronous Presettable Binary Counter

74F161A, 74F163A
Synchronous Presettable Binary Counter
April 2007
tm
Features
■ Synchronous counting and loading
■ High-speed synchronous expansion
■ Typical count frequency of 120MHz
General Description
The 74F161A and 74F163A are high-speed synchro-
nous modulo-16 binary counters. They are synchro-
nously presettable for application in programmable
dividers and have two types of Count Enable inputs plus
a Terminal Count output for versatility in forming
synchronous multi-stage counters. The 74F161A has an
asynchronous Master-Reset input that overrides all other
inputs and forces the outputs LOW. The 74F163A has a
Synchronous Reset input that overrides counting and
parallel loading and allows the outputs to be simulta-
neously reset on the rising edge of the clock. The
74F161A and 74F163A are high-speed versions of the
74F161 and 74F163.
Ordering Information
Order
Number
Package
Number
Package Description
74F161ASC
74F161ASJ
74F161APC
74F163ASC
74F163ASJ
74F163APC
M16A
M16D
N16E
M16A
M16D
N16E
16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150" Narrow
16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide
16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150" Narrow
16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide
Device also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering number.
Connection Diagrams
74F161A
©1988 Fairchild Semiconductor Corporation
74F161A, 74F163A Rev. 1.0.2
74F163A
www.fairchildsemi.com