All Alternatives

Alternatives to onsemi SN74LS161AN

onsemi SN74LS161AN and its qualified second sources, compared on form, fit and function, stock, lifecycle and price — the same checks Parter runs inside a BOM.

Equivalent and substitute parts for onsemi SN74LS161AN

SN74LS161AN compared against its qualified second sources
SN74LS161ANonsemiSN74LS161ANTexas InstrumentsCD74ACT161ETexas Instruments+2more
FFF CompatibilityUses the identical 16-pin PDIP (N package) footprint and industry-standard pin assignment.Matches the original 16-pin plastic dual-in-line package (PDIP) package and mounting method (THT).Matches all electrical characteristics, operating speed, propagation delay, and supply voltage specifications of the original LS series device.Utilizes the same standard 16-pin DIP footprint and pin configurations.Identical 16-pin PDIP package outline.Operates on a standard 5V supply with TTL-compatible input levels, meeting or exceeding the original performance.
AI Summary

SN74LS161AN by onsemi: Counter IC Binary Counter 1 Element 4 Bit Positive Edge 16-PDIP.

This is the direct active industry-standard second-source equivalent to the obsolete onsemi part, offering identical electrical and physical characteristics in the same Low-Power Schottky logic family.

  • Direct manufacturer second-source replacement using the identical LS (Low-Power Schottky) TTL logic family.
  • No changes to system timing or logic threshold levels are required.
  • Fully active and widely available through major distributors.

This Advanced CMOS alternative features TTL-compatible inputs and offers faster propagation delays and stronger output drive capability, serving as a high-performance modern drop-in replacement.

  • Advanced CMOS design (ACT series) offers fast switching speeds and high output drive capacity.
  • TTL-compatible inputs allow direct replacement in 5V TTL systems.
  • Drastically reduced static power dissipation compared to the original LS counter.
  • Faster edge rates may increase switching noise or transmission line effects on long signal traces.
Lifecycle StatusObsoleteActiveActive
Market AvailabilityIn stockIn stockIn stock
REACHUnknownREACHREACH
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