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| PartNumber | SN74ALS161BDR | SN74ALS161BDRE4 | SN74ALS161BD |
| Description | Counter ICs Synchronous 4-Bit Binary Counters | Counter ICs Synchronous 4-Bit Binary Counters | Counter ICs Synchronous 4-Bit Binary Counters |
| Manufacturer | Texas Instruments | Texas Instruments | Texas Instruments |
| Product Category | Counter ICs | Counter ICs | Logic - Counters, Dividers |
| RoHS | Y | Y | - |
| Mounting Style | SMD/SMT | SMD/SMT | SMD/SMT |
| Package / Case | SOP-16 | SOP-16 | - |
| Counter Type | Binary | Binary | Binary |
| Logic Family | ALS | ALS | ALS |
| Number of Bits | 4 bit | 4 bit | 4 bit |
| Counting Sequence | Up | - | Up |
| Operating Supply Voltage | 4.5 V to 5.5 V | 4.5 V to 5.5 V | 4.5 V to 5.5 V |
| Minimum Operating Temperature | 0 C | 0 C | - |
| Maximum Operating Temperature | + 70 C | + 70 C | - |
| Series | SN74ALS161B | SN74ALS161B | 74ALS |
| Packaging | Reel | Reel | Tube Alternate Packaging |
| Function | Counter | Counter | - |
| Operating Temperature Range | 0 C to + 70 C | 0 C to + 70 C | 0 C to + 70 C |
| Output Current | 8 mA/- 0.4 mA | 8 mA/- 0.4 mA | - |
| Brand | Texas Instruments | Texas Instruments | - |
| Product Type | Counter ICs | Counter ICs | - |
| Factory Pack Quantity | 2500 | 2500 | - |
| Subcategory | Counter ICs | Counter ICs | - |
| Unit Weight | 0.004998 oz | 0.004998 oz | 0.004998 oz |
| Counting Method | - | Asynchronous | - |
| Package Case | - | - | SOIC-16 |
| Operating Temperature | - | - | 0°C ~ 70°C |
| Mounting Type | - | - | Surface Mount |
| Direction | - | - | Up |
| Voltage Supply | - | - | 4.5 V ~ 5.5 V |
| Supplier Device Package | - | - | 16-SOIC |
| Number of Elements | - | - | 1 |
| Logic Type | - | - | Binary Counter |
| Number of Bits per Element | - | - | 4 |
| Reset | - | - | Asynchronous |
| Timing | - | - | Synchronous |
| Count Rate | - | - | 40MHz |
| Trigger Type | - | - | Positive Edge |