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| PartNumber | N74F191D | N74F191D,623 | N74F191D,602 |
| Description | Counter, Up/Down, 4 Bit Binary, 16 Pin, Plastic, SOP | IC BINARY COUNTER UP/DOWN 16SOIC | IC BINARY COUNTER UP/DOWN 16SOIC |
| Manufacturer | NXP Semiconductors | NXP Semiconductors | - |
| Product Category | Logic - Counters, Dividers | Logic - Counters, Dividers | - |
| Series | 74F | 74F | - |
| Packaging | Tube | Tape & Reel (TR) | - |
| Package Case | 16-SOIC (0.154", 3.90mm Width) | 16-SOIC (0.154", 3.90mm Width) | - |
| Operating Temperature | 0°C ~ 70°C | 0°C ~ 70°C | - |
| Mounting Type | Surface Mount | Surface Mount | - |
| Direction | Up, Down | Up, Down | - |
| Voltage Supply | 4.5 V ~ 5.5 V | 4.5 V ~ 5.5 V | - |
| Supplier Device Package | 16-SO | 16-SO | - |
| Number of Elements | 1 | 1 | - |
| Logic Type | Binary Counter | Binary Counter | - |
| Number of Bits per Element | 4 | 4 | - |
| Reset | - | - | - |
| Timing | Asynchronous | Asynchronous | - |
| Count Rate | 125MHz | 125MHz | - |
| Trigger Type | Positive Edge | Positive Edge | - |