TFBS4650 is an infrared transceiver from Vishay Semiconductors that supports data rates up to 115 kbit/s and complies with the IrDA physical layer IrPHY 1.4 specification. Features include a low power specification, adjustable emission intensity, a small package size, low current consumption, and support for a temperature range of -25°C to +85°C.
The TFBS4650 infrared transceiver integrates a PIN photodiode, infrared emitter, and control IC in a single 6.8 mm × 2.8 mm × 1.6 mm package. It complies with IrDA physical layer IrPHY 1.4, supporting data rates from 9.6 kbit/s up to 115.2 kbit/s and operates from 2.4 V to 3.6 V.
The device offers low idle current (75 µA at 3.6 V) and a shutdown current as low as 0.1 µA. It features a split power supply, optional external resistor for adjustable emission intensity, and is RoHS‑compliant and lead‑free. Recommended application circuits and solder profiles are provided for reliable PCB integration.