Vishay TFBS4650 Specifications and User Guide
Summary
This highly compact IrDA compliant transceiver, TFBS4650, is designed for reliable short-range infrared communication at data rates up to 115 kbit/s. It integrates a PIN photodiode, emitter, and control IC into one small package. This technical documentation provides comprehensive details on its electrical characteristics, low current consumption features, operating temperature range (-25°C to +85°C), and full compatibility with IrDA standards. Ideal for electronics designers creating mobile phone or PDA devices requiring efficient and stable in-air data transfer solutions.
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TFBS4650 Vishay Semiconductors
Infrared Transceiver 9.6 kbit/s to 115.2 kbit/s (SIR)
Description The TFBS4650 is one of the smallest Ir DA® compliant transceivers available. It supports data rates up to 115 kbit/s. The transceiver consists of a PIN photo- diode, infrared emitter, and control IC in a single pack- age.
Features Compliant with the Ir DA physical layer Ir PHY 1.4 (low power specification, 9.6 kbit/s to 115.2 kbit/s)
Link distance: 30 cm/20 cm full 15° cone Shutdown current 10 n A typical at 25 °C
with standard or low power Ir DA, respec- Operates from 2.4 V to 3.6 V within specification tively. Emission intensity can be set by an external over full temperature range from - 25 °C to + 85 °C resistor to increase the range for extended low
Split power supply, emitter can be driven by a sep-
power spec to > 50 cm
arate power supply not loading the regulated. U.S.
Typical transmission distance to standard device: Pat. No. 6,157,476 50 cm
Lead (Pb)-free device
Small package -
Qualified for lead (Pb)-free and Sn/Pb processing
L 6.8 mm x W 2.8 mm x H 1.6 mm
(MSL4)
Low current consumption
Device in accordance with Ro HS 2002/95/EC and
75 µA idle at 3.6 V
WEEE 2002/96/EC
Applications • Mobile phone • PDAs
Parts Table
Part Description Qty / Reel
TFBS4650-TR1 Oriented in carrier tape for side view surface mounting 1000 pcs TFBS4650-TR3 Oriented in carrier tape for side view surface mounting 2500 pcs
www.vishay.com Document Number 84672
Rev. 1.1, 03-Jul-06
Page Summary Contents For Vishay TFBS4650 Specifications and User Guide
Manual Details
| Brand | Vishay |
|---|---|
| Pages | 13 |
| File Size | 223.29 KB |
| Published | June 16, 2026 |
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Frequently Asked Questions
What data rate spectrum does the TFBS4650 support?
It is compliant with IrPHY 1.4 and supports low power rates from 9.6 kbit/s to 115.2 kbit/s (SIR).
How do I activate or deactivate the transceiver remotely?
Driving the SD pin logic Low enables both the receiver and transmitter, while driving it High shuts down the entire unit.
What are the recommended operating voltage limits?
The typical supply voltage range for operation is between 2.4 V and 3.6 V.
Is this device suitable for medical applications or harsh environments?
While its temperature range is -25 °C to +85 °C, it is specifically not designed for use in medical or life-saving applications.