SN54LS669 Datasheet Synchronous 4-bit Up/down Counter

Manufacturer: Motorola Semiconductor (now NXP Semiconductors)

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

Datasheet Details

Part number	SN54LS669
Manufacturer	Motorola Semiconductor (now NXP Semiconductors)
File Size	213.91 KB
Description	SYNCHRONOUS 4-BIT UP/DOWN COUNTER
Datasheet	SN54LS669_MotorolaInc.pdf

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.

Brand Logo	Part Number	Description	Manufacturer
	SN54LS669	SYNCHRONOUS 4-BIT UP/DOWN COUNTER	Texas Instruments

Part Number	Description
SN54LS623	OCTAL BUS TRANSCEIVER
SN54LS640	OCTAL BUS TRANSCEIVERS
SN54LS641	OCTAL BUS TRANSCEIVERS
SN54LS642	OCTAL BUS TRANSCEIVERS
SN54LS645	OCTAL BUS TRANSCEIVERS
SN54LS670	4 x 4 REGISTER FILE WITH 3-STATE OUTPUTS
SN54LS682	8-BIT MAGNITUDE COMPARATORS
SN54LS00	QUAD 2-INPUT NAND GATE
SN54LS01	QUAD 2-INPUT NAND GATE
SN54LS02	QUAD 2-INPUT NOR GATE