| SN54HC191 | Texas Instruments | Synchronous 4-Bit Up/Down Binary Counters |
| 5962-86891012A | Texas Instruments | Synchronous 4-Bit Up/Down Binary Counters |
| SN54HC191J | Texas Instruments | Synchronous 4-Bit Up/Down Binary Counters |
| SNJ54HC191FK | Texas Instruments | Synchronous 4-Bit Up/Down Binary Counters |
| SNJ54HC191J | Texas Instruments | Synchronous 4-Bit Up/Down Binary Counters |
| SN74HC191 | Texas Instruments | 4-Bit Synchronous Up/Down Binary Counters |
| SN74HC191D | Texas Instruments | 4-Bit Synchronous Up/Down Binary Counters |
| SN74HC191DR | Texas Instruments | 4-Bit Synchronous Up/Down Binary Counters |
| SN74HC191DT | Texas Instruments | 4-Bit Synchronous Up/Down Binary Counters |
| SN74HC191N | Texas Instruments | 4-Bit Synchronous Up/Down Binary Counters |
| SN74HC191N3 | Texas Instruments | 4-Bit Synchronous Up/Down Binary Counters |
| SN74HC191NSR | Texas Instruments | 4-Bit Synchronous Up/Down Binary Counters |