| PartNumber | SN74LS191NSR | SN74LS191N |
| Description | Counter ICs 4-Bit Sync Up/Down | Counter ICs 4-Bit Sync Up/Down |
| Manufacturer | Texas Instruments | Texas Instruments |
| Product Category | Counter ICs | Counter ICs |
| RoHS | Y | Y |
| Mounting Style | SMD/SMT | Through Hole |
| Package / Case | SO-16 | PDIP-16 |
| Counter Type | Binary | Binary |
| Logic Family | LS | LS |
| Number of Bits | 4 bit | 4 bit |
| Counting Method | Synchronous | - |
| Counting Sequence | Up/Down | Up/Down |
| Operating Supply Voltage | 4.75 V to 5.25 V | 4.75 V to 5.25 V |
| Minimum Operating Temperature | 0 C | 0 C |
| Maximum Operating Temperature | + 70 C | + 70 C |
| Series | SN74LS191 | SN74LS191 |
| Packaging | Reel | Tube |
| Function | Counter | Counter |
| Operating Temperature Range | 0 C to + 70 C | 0 C to + 70 C |
| Output Current | 16 mA/- 0.8 mA | 16 mA/- 0.8 mA |
| Brand | Texas Instruments | Texas Instruments |
| Product Type | Counter ICs | Counter ICs |
| Factory Pack Quantity | 2000 | 25 |
| Subcategory | Counter ICs | Counter ICs |
| Unit Weight | 0.007079 oz | 0.033570 oz |