SN74LS669 Datasheet Synchronous 4-bit Up/down Counter

Manufacturer: Motorola Semiconductor (now NXP Semiconductors)

Overview: SYNCHRONOUS 4-BIT UP/DOWN COUNTER SN54/74LS669 The SN54 / 74LS669 is a synchronous 4-bit up/down counter. The LS669 is a 4-bit binary counter.

This datasheet includes multiple variants, all published together in a single manufacturer document.

Datasheet Details

Part number	SN74LS669
Manufacturer	Motorola Semiconductor (now NXP Semiconductors)
File Size	213.91 KB
Description	SYNCHRONOUS 4-BIT UP/DOWN COUNTER
Datasheet	SN74LS669 SN74LS669D Datasheet (PDF)

Key Features

an internal carry lookahead for cascading purposes. By clocking all flip-flops simultaneously so the outputs change coincident with each other (when instructed to do so by the count enable inputs and internal gating) synchronous operation is provided. This helps to eliminate output counting spikes, normally associated with asynchronous (ripple-clock) counters. The four master-slave flip-flops are triggered on the rising (positive-going) edge of the clock waveform by a buffered clock input. Circu.

SN74LS669 Distributor

Similar Datasheet

Brand Logo	Part Number	Description	Manufacturer
	SN74LS669	SYNCHRONOUS 4-BIT UP/DOWN COUNTER	Texas Instruments

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