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| PartNumber | SN74LS191N | SN74LS191NE4 | SN74LS191N /TI |
| Description | Counter ICs 4-Bit Sync Up/Down | Counter ICs 4-Bit Sync Up/Down | |
| Manufacturer | Texas Instruments | - | - |
| Product Category | Counter ICs | - | - |
| RoHS | Y | - | - |
| Mounting Style | Through Hole | - | - |
| Package / Case | PDIP-16 | - | - |
| Counter Type | Binary | - | - |
| Logic Family | LS | - | - |
| Number of Bits | 4 bit | - | - |
| 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 | Tube | - | - |
| 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 | 25 | - | - |
| Subcategory | Counter ICs | - | - |
| Unit Weight | 0.033570 oz | - | - |