| PartNumber | SN74LS161ADR | SN74LS161AD | SN74LS161ADG4 |
| Description | Counter ICs 4-Bit Synchronous Binary Counters | Counter ICs 4bit Binary Synch | IC COUNTER BINARY 4BIT 16SOIC |
| 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 | - |
| Package / Case | SOP-16 | SOP-16 | - |
| Counter Type | Binary | Binary | - |
| Logic Family | LS | LS | - |
| Number of Bits | 4 bit | 4 bit | - |
| Counting Sequence | Up | Up | - |
| Operating Supply Voltage | 4.75 V to 5.25 V | 4.75 V to 5.25 V | - |
| Minimum Operating Temperature | 0 C | 0 C | - |
| Maximum Operating Temperature | + 70 C | + 70 C | - |
| Series | SN74LS161A | SN74LS161A | 74LS |
| Packaging | Reel | Tube | Tube Alternate Packaging |
| Function | Counter | Counter | - |
| Operating Temperature Range | 0 C to + 70 C | 0 C to + 70 C | - |
| Output Current | 8 mA/- 0.4 mA | 8 mA/- 400 uA | - |
| Brand | Texas Instruments | Texas Instruments | - |
| Product Type | Counter ICs | Counter ICs | - |
| Factory Pack Quantity | 2500 | 40 | - |
| Subcategory | Counter ICs | Counter ICs | - |
| Unit Weight | 0.004998 oz | 0.004998 oz | - |
| Package Case | - | - | 16-SOIC (0.154", 3.90mm Width) |
| Operating Temperature | - | - | 0°C ~ 70°C |
| Mounting Type | - | - | Surface Mount |
| Direction | - | - | Up |
| Voltage Supply | - | - | 4.75 V ~ 5.25 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 | - | - | 25MHz |
| Trigger Type | - | - | Positive Edge |