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| Part Number | 74AC161MTR | 74ACT161MTR | 74AC161TTR | 74AC161MTC |
|---|---|---|---|---|
| Manufacturer | STMicroelectronics | STMicroelectronics | STMicroelectronics | Fairchild Semiconductor |
| Product Status | Obsolete | Obsolete | Obsolete | Obsolete |
| 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 |
| Count Rate | 125 MHz | 290 MHz | - | 167 MHz |
| Trigger Type | Positive Edge | Positive Edge | Positive Edge | Positive Edge |
| Voltage - Supply | 2 V ~ 6 V | 4.5 V ~ 5.5 V | 2 V ~ 6 V | 2 V ~ 6 V |
| Operating Temperature | -55°C ~ 125°C | -55°C ~ 125°C | - | -40°C ~ 85°C |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Package / Case | 16-SOIC (0.154", 3.90mm Width) | 16-SOIC (0.154", 3.90mm Width) | 16-TSSOP (0.173", 4.40mm Width) | 16-TSSOP (0.173", 4.40mm Width) |
| Supplier Device Package | 16-SO | 16-SO | 16-TSSOP | 16-TSSOP |
