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| PartNumber | SN74LS191NSR | SN74LS191NS | SN74LS191NSRG4 |
| Description | Counter ICs 4-Bit Sync Up/Down | Counter Single 4-Bit Async Binary UP/Down 16-Pin SOP Tube | Counter ICs Sync 4B Up Down Counters |
| Manufacturer | Texas Instruments | - | - |
| Product Category | Counter ICs | - | - |
| RoHS | Y | - | - |
| Mounting Style | SMD/SMT | - | - |
| Package / Case | SO-16 | - | - |
| Counter Type | Binary | - | - |
| Logic Family | LS | - | - |
| Number of Bits | 4 bit | - | - |
| Counting Method | Synchronous | - | - |
| Counting Sequence | Up/Down | - | - |
| Operating Supply Voltage | 4.75 V to 5.25 V | - | - |
| Minimum Operating Temperature | 0 C | - | - |
| Maximum Operating Temperature | + 70 C | - | - |
| Series | SN74LS191 | - | - |
| Packaging | Reel | - | - |
| Function | Counter | - | - |
| Operating Temperature Range | 0 C to + 70 C | - | - |
| Output Current | 16 mA/- 0.8 mA | - | - |
| Brand | Texas Instruments | - | - |
| Product Type | Counter ICs | - | - |
| Factory Pack Quantity | 2000 | - | - |
| Subcategory | Counter ICs | - | - |
| Unit Weight | 0.007079 oz | - | - |