74163 Datasheet – Synchronous 4-Bit Counter ( PDF )

Part Number : 74163


Package : DIP 16 Pin

Manufacturers : Texas Instruments

Image and Pinouts :

74163 datasheet


Description :

This is synchronous 4-BIT counter.

These synchronous, presettable counters feature an internal carry look-ahead for application in high-speed counting designs. The ‘160, ‘162, ‘LS160A, ‘LS162A, and ‘S162 are decade counters and the ‘161, ‘163, ‘LS161A, ‘LS163A, and ‘S163 are 4-bit binary counters. Synchronous operation is provided by having all flip-flops clocked simultaneously so that the outputs change coincident with each other when so instructed by the count-enable inputs and internal gating. This mode of operation eliminates the output counting spikes that are normally associated with asynchronous (ripple clock) counters, however counting spikes may occur on the (RCO) ripple carry output. A buffered clock input triggers the four flip-flops on the rising edge of the clock input waveform.

SN54160 THRU SN54163, SN54LS160A THRU SN54LS163A, SN54S162, SN54S163, SN74160 THRU SN74163, SN74LS160A THRU SN74LS163A, SN74S162, SN74S163

Logic Diagram :


1. Internal Look-Ahead for fast counting
2. Carry output for n-bit cascading
3. Synchronous couting
4. Synchronously programmable
5. Load control line
6. Diode-clamped inputs

Other data sheets within the file : SN54160, SN54161, SN54162, SN54163, SN54LS160A

74163 Datasheet PDF Download



74163 pdf

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