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| PartNumber | 74HCT191N | 74HCT191N,652 | 74HCT191N652 |
| Description | Counter ICs SYNC BIN U/D COUNTER | Counter ICs SYNC BIN U/D COUNTER | Now Nexperia 74HCT191N - Binary Counter, HCT Series, Synchronous, Positive Edge Triggered, 4-Bit, Bidirectional, CMOS, PDIP16 |
| Manufacturer | NXP Semiconductors | NXP Semiconductors | - |
| Product Category | Logic - Counters, Dividers | Logic - Counters, Dividers | - |
| Series | 74HCT | 74HCT | - |
| Packaging | Tube | Tube | - |
| Package Case | 16-DIP (0.300", 7.62mm) | 16-DIP (0.300", 7.62mm) | - |
| Operating Temperature | -40°C ~ 125°C | -40°C ~ 125°C | - |
| Mounting Type | Through Hole | Through Hole | - |
| Direction | Up, Down | Up, Down | - |
| Voltage Supply | 4.5 V ~ 5.5 V | 4.5 V ~ 5.5 V | - |
| Supplier Device Package | 16-DIP | 16-DIP | - |
| Number of Elements | 1 | 1 | - |
| Logic Type | Binary Counter | Binary Counter | - |
| Number of Bits per Element | 4 | 4 | - |
| Reset | - | - | - |
| Timing | Synchronous | Synchronous | - |
| Count Rate | 39MHz | 39MHz | - |
| Trigger Type | Positive Edge | Positive Edge | - |