All Alternatives

Alternatives to Nexperia 74HCT123D

Nexperia 74HCT123D and its qualified second sources, compared on form/fit/function, stock, lifecycle and price — the same checks Parter runs inside a BOM.

Equivalent and substitute parts for Nexperia 74HCT123D

74HCT123D compared against its qualified second sources
74HCT123DNexperia74HCT123D,653Nexperia USA Inc.CD74HCT123M96Texas Instruments+1more
FFF CompatibilityThe part uses the identical SOT109-1 (SO16) package footprint and matches all pin assignments 1-to-1.The physical dimensions, lead pitch (1.27 mm), and surface-mount package shape are identical.Electrical specifications, supply voltage range (4.5V to 5.5V), and timing parameters are completely identical.The 16-SOIC (D) package conforms to the identical SOT109-1 (SO16) footprint and pin assignments.The package dimensions and lead pitch are standard SOIC-16, fitting the same land pattern.Operates within the same supply range (4.5V to 5.5V) and meets or exceeds output drive capability (4mA).
AI Summary

74HCT123D by Nexperia: Monostable Multivibrator 77 ns 16-SO.

This is the direct tape-and-reel packaging version of the identical silicon and package. While the original tube packaging variant (suffix ,652) is discontinued, the active ,653 variant provides a seamless drop-in replacement with no layout or electrical changes.

  • Identical physical silicon and electrical characteristics to the target component
  • Manufactured by Nexperia in the exact same SO16 (SOT109-1) package footprint
  • Maintains the Schmitt trigger inputs and 77 ns propagation delay of the original line

This is a highly reliable second-source alternative from Texas Instruments in standard Tape & Reel packaging. It features faster propagation delay (typically 25 ns) and a wider operating temperature range, making it highly robust.

  • Direct second-source second-manufacturer alternative with high availability
  • Fully pin-compatible drop-in replacement on the existing SOIC-16 footprint
  • Exceeds operating temperature range with a lower limit of -55°C compared to -40°C
  • Faster propagation delay (25 ns vs. 77 ns) may alter precise timing margins in speed-critical circuits
  • Does not explicitly mention standard Schmitt-trigger inputs on the A and B lines like the Nexperia part
Lifecycle StatusObsoleteActiveActive
Market AvailabilityIn stockIn stockIn stock
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CD74HCT123MTexas InstrumentsIn stockObsolete4Alternatives availableSee Alternatives
74HCT541DNexperiaIn stockObsolete4Alternatives availableSee Alternatives

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Frequently asked questions

Yes. The Nexperia 74HCT123D is marked obsolete, so the manufacturer has discontinued it and any remaining supply is limited to distributor stock. The qualified second sources on this page are active parts you can design in today.

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