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Part Name

74F161A Datasheet

Part Name Description Manufacturer
74F161A Synchronous Presettable Binary Counter National-Semiconductor
National ->Texas Instruments National-Semiconductor
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54F161ALMQB image

General Description
The ’F161A and ’F163A 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 ’F161A has an asynchronous Master-Reset input that over rides all other inputs and forces the outputs LOW. The ’F163A 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 ’F161A and ’F163A are high-speed versions of the ’F161 and ’F163.

Features
■ Synchronous counting and loading
■ High-speed synchronous expansion
■ Typical count frequency of 120 MHz
■ Guaranteed 4000V minimum ESD protection

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