HD74LS191P и другие
| Компонент | Описание | Производитель | |
| HD74LS191 | Ouadruple 2-input Positive NAND Gates |
Hitachi Semiconductor |
 |
| HD74LS191 | Synchronous Up/Down 4-bit Binary Counters(single clock line) |
Hitachi Semiconductor |
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| HD74LS191 | Synchronous Up / Down 4-bit Binary Counter (single clock line) |
Renesas Technology Corp |
|
| HD74LS191FPEL | Synchronous Up / Down 4-bit Binary Counter (single clock line) |
Renesas Technology Corp |
|
| HD74LS191P | Synchronous Up / Down 4-bit Binary Counter (single clock line) |
Renesas Technology Corp |
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