This part is a kind of semiconductor called 74163.

Function of this product has Synchronous Presettable Binary Counter.

Manufacturers : Fairchild Semiconductor

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74AC163 • 74ACT163 Synchronous Presettable Binary Counter November 1988 Revised February 2000 74AC163 • 74ACT163 Synchronous Presettable Binary Counter General Description The AC/ACT163 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 multistage counters. The AC/ACT163 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. Features s ICC reduced by 50% s Synchronous counting and loading s High-speed synchronous expansion s Typical count rate of 125 MHz s Outputs source/sink 24 mA s ACT163 has T [ ... ]

74163 PDF Datasheet Download