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| PartNumber | CD74HCT191E | CD74HCT190E | CD74HCT191EE4 |
| Description | Counter ICs Hi-Sp CMOS Logic Pre Sync 4-Bit Bry Up/Dn | Counter, Up/Down, Decade, 16 Pin, Plastic, DIP | Counter ICs Hi-Sp CMOS Logic Pre Sync 4-Bit Bry Up/Dn |
| Manufacturer | Texas Instruments | - | - |
| Product Category | Counter ICs | - | - |
| RoHS | Y | - | - |
| Mounting Style | Through Hole | - | - |
| Package / Case | PDIP-16 | - | - |
| Counter Type | Binary | - | - |
| Logic Family | HCT | - | - |
| Number of Bits | 4 bit | - | - |
| Counting Sequence | Up/Down | - | - |
| Operating Supply Voltage | 4.5 V to 5.5 V | - | - |
| Minimum Operating Temperature | - 55 C | - | - |
| Maximum Operating Temperature | + 125 C | - | - |
| Series | CD74HCT191 | - | - |
| Packaging | Tube | - | - |
| Function | Counter | - | - |
| Operating Temperature Range | - 55 C to + 125 C | - | - |
| Output Current | +/- 4 mA | - | - |
| Brand | Texas Instruments | - | - |
| Product Type | Counter ICs | - | - |
| Factory Pack Quantity | 25 | - | - |
| Subcategory | Counter ICs | - | - |
| Unit Weight | 0.033570 oz | - | - |