HD74LS161AP - Synchronous 4-bit Binary Counter

Renesas

Download the HD74LS161AP datasheet PDF. This datasheet also covers the HD74LS161A variant, as both devices belong to the same synchronous 4-bit binary counter family and are provided as variant models within a single manufacturer datasheet.

Key Features

an internal carry look-ahead for.

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HD74LS161AP synchronous 4-bit binary counter by Renesas - Datasheet Preview — Note: The manufacturer provides a single datasheet file (HD74LS161A-Renesas.pdf) that lists specifications for multiple related part numbers.

Datasheet Details

Part number	HD74LS161AP
Manufacturer	Renesas
File Size	277.44 KB
Description	Synchronous 4-bit Binary Counter
Datasheet	HD74LS161AP Datasheet

📁 Similar Datasheet

Part Number	Description	Manufacturer
HD74LS161A	Synchronous 4-bit Binary Counters	Hitachi Semiconductor
HD74LS160A	Synchronous Decade Counters	Hitachi Semiconductor
HD74LS162A	Synchronous Decade Counters	Hitachi Semiconductor
HD74LS163A	Synchronous 4-bit Binary Counters	Hitachi Semiconductor
HD74LS164	8-Bit Parallel-Out Serial-In Shift Registers	Hitachi Semiconductor

Other Datasheets by Renesas

Part Number	Description
HD74LS161A	Synchronous 4-bit Binary Counter
HD74LS160A	Synchronous Decade Counter
HD74LS160AP	Synchronous Decade Counter
HD74LS162A	Synchronous Decade Counter
HD74LS163A	Synchronous 4-bit Binary Counter

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text

HD74LS161A Synchronous 4-bit Binary Counter (direct clear) REJ03D0445–0200 Rev.2.00 Feb.18.2005 This synchronous 4-bit binary counter features an internal carry look-ahead for application in high-speed counting designs. Synchronous operation is provided by having all flip-flops clocked simultaneously so that the outputs changes coincident with each other when so instructed by the count-enable inputs and internal gating. This mode is operation eliminates the output counting spikes that are normally associated with asynchronous (ripple clock) counters. A buffered clock input triggers the four flip-flops on the rising (positive-going) edge of the clock input waveform. This counter is fully programmable; that is, the output may be preset to either level.