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| Part Number | MM74HC161J | MM74HC161N | MM74HC191J | MM74HC161M | MM54HC161J |
|---|---|---|---|---|---|
| Manufacturer | National Semiconductor | Fairchild Semiconductor | National Semiconductor | onsemi | National Semiconductor |
| Product Status | Active | Obsolete | Active | Obsolete | Active |
| Logic Type | Binary Counter | Binary Counter | - | Binary Counter | - |
| Direction | Up | Up | - | Up | - |
| Number of Elements | 1 | 1 | - | 1 | - |
| Number of Bits per Element | 4 | 4 | - | 4 | - |
| Reset | Asynchronous | Asynchronous | - | Asynchronous | - |
| Timing | Synchronous | Synchronous | - | Synchronous | - |
| Count Rate | 40 MHz | 40 MHz | - | 40 MHz | - |
| Trigger Type | Positive Edge | Positive Edge | - | Positive Edge | - |
| Voltage - Supply | 2 V ~ 6 V | 2 V ~ 6 V | - | 2 V ~ 6 V | - |
| Operating Temperature | -55°C ~ 125°C | -55°C ~ 125°C | - | -55°C ~ 125°C | - |
| Mounting Type | - | Through Hole | - | Surface Mount | - |
| Package / Case | - | 16-DIP (0.300", 7.62mm) | - | 16-SOIC (0.154", 3.90mm Width) | - |
| Supplier Device Package | - | 16-PDIP | - | 16-SOIC | - |
