JM38510/32702BCA Texas Instruments - Yeehing Electronics

Dual 4-Bit Binary Counters

Pricing (USD)

Quantity	Unit Price
1 — 99	18.957
100 — 249	16.559
250 — 999	12.768
1,000 +	7.99

The above prices are for reference only.

Specifications

Manufacturer	Texas Instruments
Minimum Operating Temperature	-55
Maximum Operating Temperature	125
Factory Pack Quantity	1
Package | Pins	CDIP (J) | 14

For more information, please refer to datasheet

Documents

JM38510/32702BCA Datasheet

More Information

Each of these monolithic circuits contains eight master-slave flip-flops and additional gating to implement two individual four-bit counters in a single package. The '390 and 'LS390 incorporate dual divide-by-two and divide-by-five counters, which can be used to implement cycle lengths equal to any whole and/or cumulative multiples of 2 and/or 5 up to divide-by-100. When connected as a bi-quinary counter, the separate divide-by-two circuit can be used to provide symmetry (a square wave) at the final output stage. The '393 and 'LS393 each comprise two independent four-bit binary counters each having a clear and a clock input. N-bit binary counters can be implemented with each package providing the capability of divide-by-256. The '390, 'LS390, '393, and 'LS393 have parallel outputs from each counter stage so that any submultiple of the input count frequency is available for system-timing signals. Series 54 and Series 54LS circuits are characterized for operation over the full military temperature range of -55°C to 125°C; Series 74 and Series 74LS circuits are characterized for operation from 0°C to 70°C.