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| Part Number | MM74HC161M | MM74HC161MX | MM74HC161N | MM74HC161J |
|---|---|---|---|---|
| Manufacturer | onsemi | Fairchild Semiconductor | Fairchild Semiconductor | National Semiconductor |
| Product Status | Obsolete | Active | Obsolete | Active |
| Logic Type | Binary Counter | Binary Counter | Binary Counter | Binary Counter |
| Direction | Up | Up | Up | Up |
| Number of Elements | 1 | 1 | 1 | 1 |
| Number of Bits per Element | 4 | 4 | 4 | 4 |
| Reset | Asynchronous | Asynchronous | Asynchronous | Asynchronous |
| Timing | Synchronous | Synchronous | Synchronous | Synchronous |
| Count Rate | 40 MHz | 40 MHz | 40 MHz | 40 MHz |
| Trigger Type | Positive Edge | Positive Edge | Positive Edge | Positive Edge |
| Voltage - Supply | 2 V ~ 6 V | 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 | -55°C ~ 125°C |
| Mounting Type | Surface Mount | - | Through Hole | - |
| Package / Case | 16-SOIC (0.154", 3.90mm Width) | - | 16-DIP (0.300", 7.62mm) | - |
| Supplier Device Package | 16-SOIC | - | 16-PDIP | - |
