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SN74AS161DR is listed in the Counter Dividers range at ChipApex. The manufacturer field lists Texas Instruments. Its product description is IC BINARY COUNTER 4-BIT 16SOIC. Review the specifications below when checking this part for your BOM.
The SN74AS161DR is a synchronous 4-bit binary counter from Texas Instruments' AS logic series. It features positive edge triggering and an up-counting direction within a 16-pin SOIC surface-mount package. The device operates on a single supply voltage ranging from 4.5 V to 5.5 V. It supports asynchronous reset and parallel load capabilities, designed for high-speed digital counting applications in commercial temperature ranges.
Verify current manufacturing status as the SN74AS161DR may be obsolete. Confirm availability of parametric equivalents such as the SN74ALS161BDR if direct sourcing is unavailable. Ensure compatibility with existing PCB footprints and voltage levels when selecting replacement components from authorized distributors.
Select this component for applications requiring fast synchronous counting with TTL-compatible inputs. Consider the SN74ALS161BDR as a potential substitute if the primary part is discontinued. Verify that the operating voltage range aligns with the system's power supply constraints before integration into the design.
This part belongs to the Texas Instruments SN74AS161 series of synchronous counters. It is distinct from other variants like the SN74HC161 or SN74LS161 due to its specific AS logic speed and voltage requirements. The DR suffix indicates a tape-and-reel surface-mount packaging format suitable for automated assembly processes.
The SN74ALS161BDR is listed as a parametric equivalent substitute. Verify pinout compatibility and electrical specifications before swapping.
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