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NXP Semiconductors PCA9540BDP/Q900J — Discrete Semiconductors
NXP Semiconductors

PCA9540BDP/Q900J I²C Multiplexer, 2-Ch, AEC-Q100, 8-TSSOP

MPNPCA9540BDP/Q900J
End of Life

NXP PCA9540BDP/Q900J 2-channel I²C multiplexer, AEC-Q100 automotive grade, 2.3 V to 5.5 V supply, 8-TSSOP package, surface mount.

$2.15Ref. price · indicative, final on quote
PCA9540BDP/Q900J datasheet
Packaging8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
StockContact for availability
Lead timeIn Stock wk
MOQ1 pcs
  • 100% new & originalTraceable channels only — no refurbs, no pulls, no remarked parts.
  • Date & lot codes on quoteStated per line before you commit; label photos on request.
  • MSL-compliant ESD packingMoisture-sealed bags with indicator cards; reels photo-verified.
  • PayPal buyer protectionPay by T/T, PayPal or Payoneer — card payments covered end to end.

Specifications

PCA9540BDP/Q900J Technical Specifications
ParameterValue
Mounting typeSurface Mount
Voltage2.3V ~ 5.5V
InterfaceI²C
GradeAutomotive
PackageTape & Reel (TR); Cut Tape (CT)
Applications2-Channel I²C Multiplexer
QualificationAEC-Q100
Case8-TSSOP, 8-MSOP (0.118\", 3.00mm Width)

Product details

2-channel I²C bus expander with AEC-Q100 qualification

The PCA9540BDP/Q900J is a 2-channel I²C multiplexer from NXP, housed in an 8-TSSOP package. It lets a single I²C master communicate with two downstream buses, each selected via the control register — no extra GPIOs needed for chip-select.

Supply range and I²C compatibility

The pass-gate architecture isolates the downstream bus capacitance from the upstream bus, so each channel can drive its own capacitive load without degrading the master's rise time. The surface-mount profile suits automated assembly lines with standard reflow profiles.

Active lifecycle and sourcing posture

Sourced through authorized and independent distribution channels. RoHS3 compliant.

Frequently asked questions

Where can I buy authentic PCA9540BDP/Q900J?

The PCA9540BDP/Q900J is sourced through authorized and independent distribution.

Is PCA9540BDP/Q900J compatible with 3.3 V I²C?

Yes.

What is the difference between PCA9540BDP and PCA9540BDP/Q900J?

The /Q900J suffix denotes automotive-grade qualification (AEC-Q100). The base PCA9540BDP is a commercial/industrial-grade variant without that automotive reliability screening. Both share the same 2-channel I²C multiplexer function and 8-TSSOP package.