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| PartNumber | SN74HC191D | SN74HC191DR | SN74HC191DG4 |
| Description | Counter ICs 4-Bit Sync UpDn Bnry | Counter ICs 4-Bit Synch Up/Down Binary Counter | Counter Single 4-Bit Async Binary UP/Down 16-Pin SOIC Tube - Bulk (Alt: SN74HC191DG4) |
| Manufacturer | Texas Instruments | Texas Instruments | - |
| Product Category | Counter ICs | Counter ICs | - |
| RoHS | Y | Y | - |
| Mounting Style | SMD/SMT | SMD/SMT | - |
| Package / Case | SOP-16 | SOP-16 | - |
| Counter Type | Binary | Binary | - |
| Logic Family | HC | HC | - |
| Number of Bits | 4 bit | 4 bit | - |
| Counting Sequence | Up/Down | Up/Down | - |
| Operating Supply Voltage | 2 V to 6 V | 2 V to 6 V | - |
| Minimum Operating Temperature | - 40 C | - 40 C | - |
| Maximum Operating Temperature | + 85 C | + 85 C | - |
| Series | SN74HC191 | SN74HC191 | - |
| Packaging | Tube | Reel | - |
| Function | Counter | Counter | - |
| Operating Temperature Range | - 40 C to + 85 C | - 40 C to + 85 C | - |
| Output Current | +/- 5.2 mA | +/- 5.2 mA | - |
| Brand | Texas Instruments | Texas Instruments | - |
| Product Type | Counter ICs | Counter ICs | - |
| Factory Pack Quantity | 40 | 2500 | - |
| Subcategory | Counter ICs | Counter ICs | - |
| Unit Weight | 0.004998 oz | 0.004998 oz | - |