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SN74LS669 |
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| Part Number | SN74LS669 |
| Manufacturer | Motorola |
| Description | 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. For high speed counting applications, this presettable ... |
| 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.
Circuitry of the load inputs allows loading with the carry-enable output of the cascaded counters. Becaus... |
| Document |
 SN74LS669 Data Sheet
PDF 213.91KB |
| Distributor | Stock | Price | Buy |
|---|
| No. | Parte # | Fabricante | Descripción | Hoja de Datos |
|---|---|---|---|---|
| 1 | SN74LS668 |
Texas Instruments |
SYNCHRONOUS 4-BIT UP/DOWN COUNTER |
|
| 2 | SN74LS669 |
Texas Instruments |
SYNCHRONOUS 4-BIT UP/DOWN COUNTER |
|
| 3 | SN74LS620 |
Texas Instruments |
Octal Bus Transceiver |
|
| 4 | SN74LS621 |
Texas Instruments |
Octal Bus Transceiver |
|
| 5 | SN74LS623 |
Motorola |
OCTAL BUS TRANSCEIVER |
|