| PartNumber | 74AC161MTR | 74AC161TTR |
| Description | Counter Shift Registers Sync Binary Counter | Counter Shift Registers Sync Binary Counter |
| Manufacturer | STMicroelectronics | STMicroelectronics |
| Product Category | Counter Shift Registers | Counter Shift Registers |
| RoHS | Y | Y |
| Counter Type | Presettable | Presettable |
| Counting Sequence | Up | Up |
| Number of Circuits | 1 | 1 |
| Number of Bits | 4 bit | 4 bit |
| Package / Case | SO-16 | TSSOP-16 |
| Logic Family | 74AC | 74AC |
| Logic Type | CMOS | CMOS |
| Number of Input Lines | 4 | 4 |
| Propagation Delay Time | 12 ns, 9 ns | 12 ns, 9 ns |
| Supply Voltage Max | 6 V | 6 V |
| Minimum Operating Temperature | - 55 C | - 55 C |
| Maximum Operating Temperature | + 125 C | + 125 C |
| Packaging | Reel | Reel |
| Function | 4 Bit Synchronous Counter | 4 Bit Synchronous Counter |
| Series | 74AC161 | 74AC161 |
| Width | 4 mm | 4.4 mm |
| Brand | STMicroelectronics | STMicroelectronics |
| Mounting Style | SMD/SMT | SMD/SMT |
| Number of Output Lines | 4 | 4 |
| Operating Supply Voltage | 2 V to 6 V | 2 V to 6 V |
| Product Type | Counter Shift Registers | Counter Shift Registers |
| Factory Pack Quantity | 2500 | 2500 |
| Subcategory | Logic ICs | Logic ICs |
| Unit Weight | 0.007079 oz | 0.006102 oz |