| Part number | DM74LS191 |
|---|---|
| Datasheet | DM74LS191_FairchildSemiconductor.pdf |
| File Size | 70.93 KB |
| Manufacturer | Fairchild (now onsemi) |
| Description | Synchronous 4-Bit Up/Down Counter |
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The DM74LS191 circuit is a synchronous, reversible, up/ down counter. Synchronous operation is provided by having all flip-flops clocked simultaneously, so that the outputs change simultaneously when so instructed by the steering logic. This mode of operation eliminates the output counting spikes normally associated with asynchronous (ripple clock) counters.
| Brand Logo | Part Number | Description | Other Manufacturers |
|---|---|---|---|
 |
DM74LS191 | Synchronous 4-Bit Up/Down Counters | National Semiconductor |
See all Fairchild (now onsemi) datasheets
| Part Number | Description |
|---|---|
| DM74LS193 | Synchronous 4-Bit Binary Counter |
| DM74LS194A | 4-Bit Bidirectional Universal Shift Register |
| DM74LS10 | Triple 3-Input NAND Gate |
| DM74LS109A | Dual Positive-Edge-Triggered J-K Flip-Flop |
| DM74LS11 | Triple 3-Input AND Gate |
| DM74LS112A | Dual Negative-Edge-Triggered Master-Slave J-K Flip-Flop |
| DM74LS123 | Dual Retriggerable One-Shot |
| DM74LS125A | Quad 3-STATE Buffer |
| DM74LS126A | Quad 3-STATE Buffer |
| DM74LS132 | Quad 2-Input NAND Gate |
