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Home > Products > Sensors, Transducers > Optical Sensors > Photo Detectors - Remote Receiver

Vishay Semiconductor Opto Division TSOP34338

Name: TSOP34338
Brand: Vishay Semiconductor Opto Division
SKU: TSOP34338
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TSOP34338

Manufacturer:: Vishay Semiconductor Opto Division

Category:: Photo Detectors - Remote Receiver

Package:

Datasheet:: TSOP34338.pdf

Description:: SENSOR REMOTE REC 38.0KHZ 45M

Quantity:: RFQ Add To RFQ list

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Inventory:2,562

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Product details

Overview

TSOP34338 from Vishay Semiconductors is an infrared (IR) receiver module optimized for short-burst remote control systems operating at 38 kHz carrier frequency, featuring AGC5 noise suppression for very noisy environments, ±45° horizontal directivity, and 2.0–5.5 V supply voltage compatibility. It integrates a PIN photodiode and preamplifier in a molded epoxy package with built-in IR filter and delivers demodulated active-low output directly to microcontrollers.

For engineers reviewing the TSOP34338 datasheet, TSOP34338 pinout, TSOP34338 application, or TSOP34338 equivalent, this device is selected for RECS-80, XMP, RCMM, r-map, and MCIR code-based remote control receivers where immunity to fluorescent lamp interference, sunlight, and Wi-Fi noise is critical - especially in consumer audio/video equipment and smart home remotes.

Technical Context

The TSOP34338 implements a band-pass amplifier centered at 38 kHz with automatic gain control (AGC5), enabling robust rejection of continuous and modulated ambient IR noise while maintaining sensitivity to valid short-burst command codes. Its internal circuit includes a PIN diode detector, preamplifier, band-pass filter, demodulator, and output stage with active-low open-collector logic.

It supports minimum burst lengths of 6 carrier cycles and requires gap times of 6–20 cycles between bursts; maximum envelope duty cycle varies with burst length per AGC5 configuration. The device operates across –25 °C to +85 °C and is not qualified for automotive use.

Key Specifications

Parameter	Value and Actual Design Meaning
Carrier frequency	38 kHz - precisely tuned for standard IR remote protocols including RC5, RECS-80, and XMP.
Supply voltage range	2.0 V to 5.5 V - enables direct interface with 3.3 V and 5 V microcontrollers without level-shifting.
Supply current (dark)	0.25–0.45 mA at 3.3 V - ensures ultra-low power consumption in battery-powered remotes.
Output type	Active-low demodulated signal - directly compatible with GPIO interrupt inputs on most MCUs.
Directivity (half-angle)	±45° - provides wide-enough field-of-view for typical room-scale remote operation.
Transmission distance	Up to 39 m with TSAL6200 emitter at 50 mA - validated under dark ambient conditions.
Minimum irradiance (XMP)	0.1–0.2 mW/m² - defines lowest usable IR signal strength for reliable decoding.
Operating temperature	–25 °C to +85 °C - suitable for indoor consumer electronics, excluding automotive under-hood use.

Pinout & Package

TSOP34338 uses a 3-pin surface-mount leaded package (6.0 mm × 6.95 mm × 5.6 mm) with molded epoxy housing and integrated IR filter. Pin 1 is OUT (active-low demodulated output), Pin 2 is GND, and Pin 3 is VS (supply voltage input).

Pin/Terminal	Circuit Role	Design Meaning
1 (OUT)	Demodulated output	Open-collector active-low signal - requires external pull-up resistor to VS or MCU I/O rail.
2 (GND)	Ground reference	Common return path for photodiode bias, amplifier, and output stage - must be low-impedance.
3 (VS)	Supply voltage input	Accepts 2.0–5.5 V DC - decoupling capacitor (e.g., 100 nF) recommended near pin for ripple suppression.

Key Features

Feature	Design Value
AGC5 noise suppression	Optimized for very noisy environments (e.g., LCD TV backlight, fluorescent lamps with high/low modulation) - reduces false triggers without sacrificing responsiveness to valid XMP/RECS-80 bursts.
Integrated IR filter	Blocks visible light and near-IR outside 850–1050 nm band - improves ambient light immunity and eliminates need for external optical filtering.
Short-burst optimization	Supports burst lengths as low as 6 carrier cycles with precise gap timing (6–20 cycles) - matches RECS-80, r-map, and MCIR protocol requirements.
Low supply current	Typical 0.35 mA at 3.3 V in dark ambient - extends battery life in handheld remotes beyond 12 months with alkaline cells.
Direct microcontroller interface	No external components required for basic operation - OUT pin drives standard CMOS/TTL inputs when pulled up to same rail as VS or MCU I/O.

Applications

Smart TV Remote Control	Wireless Audio System Remote
Use Scenario: User points remote at TV from up to 5 m in living room with LED backlighting and Wi-Fi router nearby. IC Role / Device Role / Timing Role: IR receiver module detecting 38 kHz modulated RECS-80 or XMP commands and delivering clean active-low pulses to TV's main MCU. Use Value: AGC5 suppresses interference from TV's own backlight and nearby 2.4 GHz emissions, ensuring >99.9% command recognition rate even during simultaneous streaming.	Use Scenario: Remote used in multi-room audio setup with ambient sunlight and incandescent lighting. IC Role / Device Role / Timing Role: Demodulates short-burst RCMM and r-map signals from handheld remote into decoded logic-level pulses for system controller. Use Value: ±45° directivity and 0.1 mW/m² minimum irradiance enable reliable operation at 3–4 m range without requiring precise aiming, reducing user frustration.
Set-Top Box IR Interface	Smart Home Hub Remote Receiver
Use Scenario: Compact set-top box mounted behind glass cabinet door with partial IR signal attenuation. IC Role / Device Role / Timing Role: Front-end IR signal conditioner converting modulated 38 kHz bursts into digital-ready output for SoC GPIO interrupt handling. Use Value: 39 m max transmission distance (with TSAL6200) ensures full functionality even through 5 mm tempered glass, eliminating need for external repeater.	Use Scenario: Central hub receives commands from multiple universal remotes in shared living space with mixed lighting sources. IC Role / Device Role / Timing Role: Noise-immune IR front-end supporting concurrent RECS-80, XMP, and MCIR code formats for unified command ingestion. Use Value: Dual-suppression capability (fluorescent lamp Fig. 13 & Fig. 14) prevents false wake-ups from ambient IR noise, improving voice-assistant coexistence.

Smart TV Remote Control

Wireless Audio System Remote

Use Scenario: User points remote at TV from up to 5 m in living room with LED backlighting and Wi-Fi router nearby.

IC Role / Device Role / Timing Role: IR receiver module detecting 38 kHz modulated RECS-80 or XMP commands and delivering clean active-low pulses to TV's main MCU.

Use Value: AGC5 suppresses interference from TV's own backlight and nearby 2.4 GHz emissions, ensuring >99.9% command recognition rate even during simultaneous streaming.

Use Scenario: Remote used in multi-room audio setup with ambient sunlight and incandescent lighting.

IC Role / Device Role / Timing Role: Demodulates short-burst RCMM and r-map signals from handheld remote into decoded logic-level pulses for system controller.

Use Value: ±45° directivity and 0.1 mW/m² minimum irradiance enable reliable operation at 3–4 m range without requiring precise aiming, reducing user frustration.

Set-Top Box IR Interface

Smart Home Hub Remote Receiver

Use Scenario: Compact set-top box mounted behind glass cabinet door with partial IR signal attenuation.

IC Role / Device Role / Timing Role: Front-end IR signal conditioner converting modulated 38 kHz bursts into digital-ready output for SoC GPIO interrupt handling.

Use Value: 39 m max transmission distance (with TSAL6200) ensures full functionality even through 5 mm tempered glass, eliminating need for external repeater.

Use Scenario: Central hub receives commands from multiple universal remotes in shared living space with mixed lighting sources.

IC Role / Device Role / Timing Role: Noise-immune IR front-end supporting concurrent RECS-80, XMP, and MCIR code formats for unified command ingestion.

Use Value: Dual-suppression capability (fluorescent lamp Fig. 13 & Fig. 14) prevents false wake-ups from ambient IR noise, improving voice-assistant coexistence.

Equivalent & Alternatives

The following parts are listed as comparable options for similar IR receiver applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
TSOP32338	Different pinout: Pin 1 = OUT, Pin 2 = VS, Pin 3 = GND - incompatible PCB layout without redesign.	Same AGC5, 38 kHz, and optical specs - identical functional behavior in noise immunity and protocol support.	Select only if legacy board uses TSOP32x pinout; requires trace rerouting or adapter.
TSOP34538	Higher AGC level (AGC5+), tighter burst gap tolerance (6–35 cycles), and enhanced fluorescent lamp suppression per Fig. 14.	Better suited for extreme-noise industrial remotes or medical devices near imaging equipment - over-spec for consumer AV.	Choose when EMI environment exceeds standard living room conditions; adds cost with no benefit in typical deployments.

Compared with TSOP34338, TSOP32338 requires PCB layout changes due to reversed power/ground pins, while TSOP34538 offers marginally stronger noise rejection at higher cost and no improvement in core remote control performance metrics like range or code compatibility.

Availability

TSOP34338 is available at Aetrix Electronics and suitable for smart TV remotes, wireless audio system controls, and set-top box IR interfaces requiring stable component supply, consistent AGC5 performance, and long-term availability in consumer electronics production.

Supply support for TSOP34338 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Vishay Intertechnology is a global semiconductor manufacturer specializing in discrete components, sensors, and optoelectronics, with emphasis on reliability, precision, and application-specific integration.

The TSOP343xx series belongs to Vishay's IR receiver module product line, engineered specifically for short-burst remote control systems in non-automotive consumer environments where ambient noise immunity and protocol flexibility are critical.

FAQ

What is the carrier frequency supported by TSOP34338?

The TSOP34338 is factory-tuned to 38 kHz carrier frequency, matching industry-standard remote control protocols such as RECS-80, XMP, RCMM, r-map, and MCIR. This frequency is fixed and not adjustable; deviation beyond ±5 % significantly degrades sensitivity and noise rejection performance of the TSOP34338.

Does TSOP34338 require external components for basic operation?

Yes - TSOP34338 requires an external pull-up resistor (typically 4.7 kΩ to 10 kΩ) on the OUT pin to VS or MCU I/O rail, and a 100 nF ceramic decoupling capacitor between VS and GND placed as close as possible to the device. These components ensure stable demodulation and noise-free output pulses from the TSOP34338.

Is TSOP34338 qualified for automotive applications?

No - TSOP34338 is explicitly not qualified to AEC-Q200 or any automotive-grade specifications. Its operating temperature range (–25 °C to +85 °C) and qualification status are limited to consumer and industrial indoor applications. For automotive use, Vishay recommends evaluating the TSOP40xx or TFDUxxx series instead of the TSOP34338.

How does AGC5 in TSOP34338 improve noise immunity?

AGC5 dynamically adjusts gain to suppress spurious outputs caused by strong ambient IR sources like fluorescent lamps (Fig. 13/14), sunlight, or Wi-Fi interference. When noise is detected, TSOP34338 reduces sensitivity just enough to block false triggers while preserving response to valid 38 kHz bursts - verified for RECS-80 and XMP code formats per the TSOP34338 datasheet.

What is the minimum burst length supported by TSOP34338?

The TSOP34338 supports a minimum burst length of 6 carrier cycles at 38 kHz (≈158 µs), with required inter-burst gap times of 6–20 cycles depending on burst duration. This timing aligns with RECS-80, r-map, and MCIR protocol structures, and is validated in the TSOP34338 electrical characteristics table and burst timing diagrams.

TSOP34338 Specifications

Product attributes: Attribute value

Manufacturer:: Vishay Semiconductor Opto Division

Series:: -

Packaging:: Tube

Product Status:: Active

Sensing Distance:: 45m

B.P.F. Center Frequency:: 38.0kHz

Voltage - Supply:: 2.5 V ~ 5.5 V

Current - Supply:: 450 µA

Orientation:: Side View

Mounting Type:: Through Hole

Operating Temperature:: -25°C ~ 85°C

TSOP34338 FAQ

1.How can I place an order for TSOP34338 through Aetrix?

Please submit a Request for Quotation (RFQ) for TSOP34338 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for TSOP34338 reliable?

The price and inventory of TSOP34338 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TSOP34338 is usually 5 days.

3.What payment methods are accepted for TSOP34338?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TSOP34338 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TSOP34338?

TSOP34338 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TSOP34338 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for TSOP34338?

For technical support, including TSOP34338 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TSOP34338 requirements.

6.How does Aetrix verify that TSOP34338 is sourced from the original manufacturer or authorized distributors?

All TSOP34338 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TSOP34338 meets industry standards.

7.What is the process for return or replacement of TSOP34338?

All TSOP34338 units undergo pre-shipment inspection (PSI). If there is an issue with TSOP34338, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The TSOP34338 part is unused and in its original packaging.

Return procedure for TSOP34338:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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