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Counter IC Counter, Decade 2 Element 4 Bit Negative Edge 20-LCCC (8.89x8.89)
20-CLCCHersteller:
Texas Instruments
Herstellerteil #:
JM38510/32701B2A
Datenblatt:
Series:
54LS
Logic Type:
Counter, Decade
Direction:
Up
Number Of Elements:
2
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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.
Series | 54LS | Logic Type | Counter, Decade |
Direction | Up | Number of Elements | 2 |
Number of Bits per Element | 4 | Reset | Asynchronous |
Timing | - | Count Rate | 35 MHz |
Trigger Type | Negative Edge | Voltage - Supply | 4.5 V ~ 5.5 V |
Operating Temperature | -55°C ~ 125°C (TA) | Mounting Type | Surface Mount |
Base Product Number | JM38510 |
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Menge. | Einzelpreis | Ext. Preis |
---|---|---|
1+ | $101,268 | $101,27 |
200+ | $39,189 | $7.837,80 |
500+ | $37,813 | $18.906,50 |
1000+ | $37,133 | $37.133,00 |
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