Texas Instruments SNJ54LS390J
- Part Number:
- SNJ54LS390J
- Manufacturer:
- Texas Instruments
- Ventron No:
- 6389493-SNJ54LS390J
- Description:
- Dual 4-Bit Decade And Binary Counters
- Datasheet:
- sn54ls390
- FunctionCounter
- Bits (#)4
- Technology familyLS
- Supply voltage (min) (V)4.75
- Supply voltage (max) (V)5.25
- Input typeBipolar
- Output typePush-Pull
- FeaturesHigh speed (tpd 10-50ns)
- Operating temperature range (°C)-55 to 125
- RatingMilitary
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.
DUAL NEGATIVE EDGE TTL MIL-PRF-38535 logic counter 15pF 125C 0.008A 5V
Counter/Divider Dual 4-Bit Decade UP 16-Pin CDIP Tube
Ic,counter,up,bi-Quinary,ls-Ttl,dip,16Pin,ceramic Rohs Compliant: Yes |TEXAS INSTRUMENTS SNJ54LS390J
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