This IR demodulator from Vishay is a general-purpose receiver for IR-based remote-control projects. It is intended as detector for data formats that are modulated at 38 kHz and have at least 10 cycles/burst; popular IR-codes that meet these requirements are NEC, Sharp, and r-step (our Mini IR Remote Control uses NEC encoding, so it works well with the TSOP38438). The module’s output signal can be directly connected to a microcontroller; no additional external components are required. See the TSOP38438 datasheet (132k pdf) for more information.

For a similar IR detector that is tuned for a 56 kHz carrier frequency, see the Vishay TSOP34156.

Modulated IR detector comparison

Part TSOP34156 TSOP38438 TSSP58P38 TSSP58038
Intended function IR remote control brightness/proximity sensing predictable modulated IR presence sensing
Modulation frequency 56 kHz 38 kHz 38 kHz 38 kHz
Gain (sensitivity) automatic but inaccessible automatic, predictable fixed high gain
Output binary (data) analog (pulse width) binary (on/off)
Update rate a few kHz a few Hz a few kHz


  • Operating Voltage: 2.5 V to 5.5 V
  • Carrier Frequency: 38 kHz
  • Package: Through-hole with 0.1″ lead spacing

See the TSOP384 datasheet (132k pdf) for more detailed specifications.


File downloads

TSOP384xx IR receiver datasheet (132k pdf)
Datasheet for the Vishay TSOP382 and TSOP384 lines of IR receiver modules for remote control systems.


SKU PL-2471
Brand Pololu

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