Datasheet Details
| Part number | 74LS191 |
|---|---|
| Manufacturer | Fairchild (now onsemi) |
| File Size | 70.93 KB |
| Description | Synchronous 4-Bit Up/Down Counter |
| Datasheet | 74LS191-FairchildSemiconductor.pdf |
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Overview: DM74LS191 Synchronous 4-Bit Up/Down Counter with Mode Control August 1986 Revised February 1999 DM74LS191 Synchronous 4-Bit Up/Down Counter with Mode Control.
| Part number | 74LS191 |
|---|---|
| Manufacturer | Fairchild (now onsemi) |
| File Size | 70.93 KB |
| Description | Synchronous 4-Bit Up/Down Counter |
| Datasheet | 74LS191-FairchildSemiconductor.pdf |
|
|
|
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 | Manufacturer |
|---|---|---|---|
 |
74LS191 | PRESETTABLE 4-BIT BINARY UP/DOWN COUNTERS | Motorola |
 |
74LS191 | Synchronous Up/Down 4-bit Binary Counters | Hitachi Semiconductor |
 |
74LS191 | Synchronous Up/Down Counters | Texas Instruments |
| Part Number | Description |
|---|---|
| 74LS193 | Synchronous 4-Bit Binary Counter |
| 74LS194 | 4-Bit Bidirectional Universal Shift Register |
| 74LS194A | 4-Bit Bidirectional Universal Shift Register |
| 74LS10 | Triple 3-Input NAND Gate |
| 74LS11 | Triple 3-Input AND Gate |
| 74LS112A | Dual Negative-Edge-Triggered Master-Slave J-K Flip-Flop |
| 74LS12 | Dual Retriggerable One-Shot |
| 74LS12 | Dual Retriggerable One-Shot |
| 74LS123 | Dual Retriggerable One-Shot |
| 74LS125 | Quad 3-STATE Buffer |