All Alternatives

Alternatives to Texas Instruments TCA6424ARGJR

Texas Instruments TCA6424ARGJR 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 Texas Instruments TCA6424ARGJR

TCA6424ARGJR compared against its qualified second sources
TCA6424ARGJRTexas InstrumentsPCAL6524HEAZNXP USA Inc.PI4IOE5V6524ZHEXDiodes Incorporated+1more
FFF CompatibilityThe pin assignments match the target part identically across all 32 pins, and both parts share the same 5x5mm 32-terminal footprint.Both components are housed in an ultra-thin 32-terminal QFN style package (HUQFN vs UQFN) with matching 5.00 mm x 5.00 mm dimensions.Provides 24-bit general-purpose I/O expansion, supports dual power-supply translation, and fully meets or exceeds all electrical characteristics of the target.The 32-TQFN pin assignments are identical to the target's UQFN-32 layout, enabling board placement without layout modifications.Both components are in 32-lead 5.00 mm x 5.00 mm packages with equivalent lead pitches and thermal land layouts.Performs the identical 24-bit GPIO expansion function, matching all critical electrical ceilings, voltage limits, and signal pins.
AI Summary

TCA6424ARGJR by Texas Instruments: I/O Expander 24 I2C, SMBus 400 kHz 32-UQFN (5x5).

The PCAL6524HEAZ is an excellent, high-performance second-source alternative from NXP. It offers direct pin-to-pin drop-in compatibility while adding advanced Agile I/O features and supporting a faster 1 MHz I2C clock speed.

  • Direct pin-to-pin compatible drop-in replacement
  • Upgraded I2C interface speed supporting Fast-mode Plus (Fm+) up to 1 MHz vs 400 kHz on the target
  • Includes NXP's Agile I/O advanced features such as programmable output drive strength and input latching
  • Agile I/O registers occupy additional address space, requiring minimal software driver validation if non-standard register maps are accessed.

The PI4IOE5V6524ZHEX from Diodes Inc. is a reliable second-source alternative designed to be pin-to-pin compatible with the TCA6424A. It provides identical dual-voltage translation and interrupt/reset functions while boosting communication speed.

  • Fully pin-compatible drop-in replacement with identical layout
  • Supports higher I2C communication speeds up to 1 MHz vs 400 kHz
  • Same dual-supply voltage translation (1.65V to 5.5V) and interrupt/reset behavior
  • Slightly different power-on reset threshold levels under specific power-up ramp scenarios.
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