ST Life.augmented


Rad-Hard 1-to-8 Skew Clock Driver
  • active Active

The 54AC and 54ACT series represent over 60 product types with different high-speed CMOS functions, specifically designed to meet the radiation requirements of the aerospace industry. They include a large set of gates, flip-flops, multiplexers, counters, bus interfaces, and several other functions. Their radiation hardness, immunity from single event latch-up (SEL) and single event upset (SEU), and housing in hermetic packages make them suitable for the most difficult environmental conditions. The complete specification for each type is available from the DSCC web site: STMicroelectronics guarantees full compliance of qualified parts with these DSCC specifications.

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Errata Sheet
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Data Brief

Key Features

  • AC: 2 to 6 V operating voltage
  • ACT: 4.5 to 5.5 V operating voltage
  • High speed TPD = 4.5 ns (typ.)
  • Low DC power dissipation: 8 μA max.
  • Symmetrical 24 mA output characteristics
  • High noise immunity: 28% of min. VCC
  • Power-down input protection
  • Balanced propagation delays
  • Improved electrical latch-up immunity
  • Controlled rise and fall times
  • Operating temperature: - 55 to 150 °C
  • Hermetic packages
  • Rad-hard: 300 kRad TID at any Mil1019 dose rates
  • SEL immune to 110 MeV/cm²/mg LET ions
  • RHA QML-V qualified
  • Same die and electrical specification for engineering and flight models

Design Resources


Technical Documentation

Product Specifications

Description Version Size
DB0998: Rad-hard advanced high-speed 5 V CMOS logic series
5.0 1,311 KB

Technical Notes & Articles

Description Version Size
TN1181: Engineering Model quality level
1.1 142 KB

HW Model & CAD Libraries

HW Model & CAD Libraries

Description Version Size
54AC2525 beginning of life IBIS model (.ibs)
1.0 12 KB

Sample & Buy

Part Number Marketing StatusSMD PIN/Detailed SpecQuality LevelEPPLOther (comments) Hi-Rel PackageLead FinishPacking TypePackage: Product MarkingMass
RHFAC2525K01VActive5962F9217402VXCQML-V FlightFlat-14GoldCarrier Tape5962F9217402VXC1.5
RHFAC2525K02VNRND5962F9217402VAQML-V FlightFlat-14Solder DipCarrier Tape5962F9217402VA1.5
RHFAC2525K1ActiveEngineering ModelFlat-14GoldCarrier TapeRHFAC2525K11.5

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors
(**) The Material Declaration forms available on may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.
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