74F161A

74F161A, 74F163A Synchronous Presettable Binary Counter

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74F161A, 74F163A Synchronous Presettable Binary Counter

April 2007

74F161A, 74F163A Synchronous Presettable Binary Counter
Features
Synchronous counting and loading High-speed synchronous expansion Typical count frequency of 120MHz

General Description
The 74F161A and 74F163A are high-speed synchronous modulo-16 binary counters. They are synchronously 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 simultaneously 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
74F161ASC 74F161ASJ 74F161APC 74F163ASC 74F163ASJ 74F163APC

Package Number
M16A M16D N16E M16A M16D N16E

Package Description
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

74F163A

1988 Fairchild Semiconductor Corporation 74F161A, 74F163A Rev. 1.0.2

www.fairchildsemi.com