TOIM5232-TR3

Encoders, Decoders, Converters Overview

The TOIM5232-TR3 is a SIR IrDA endec IC designed for pulse shaping in infrared transceivers. It shortens RS232 output signals to IrDA-compatible pulses and stretches received pulses to proper bit widths. Operating voltages range from 2.7 V to 3.6 V with an idle supply current of 2 mA. The device supports baud rates from 1.2 kbit/s to 115.2 kbit/s using a 3.6864 MHz crystal clock. It features a QFN-20 package measuring 4 mm x 4 mm x 0.75 mm.

Encoders, Decoders, Converters Feature Summary

• Interfaces directly between SIR transceivers and RS232 ports
• Programmable baud rate generator supporting 13 specific rates
• Selectable output pulse duration modes for power optimization
• Includes user-programmable control outputs and LED drivers

Encoders, Decoders, Converters Applications

• RS232 to IrDA dongle applications
• Infrared data transmission modules
• Battery-operated electronics requiring low standby current

Encoders, Decoders, Converters Procurement Notes

Verify the component status as the datasheet explicitly states it is not recommended for new designs. Confirm that the TR3 suffix indicates a reel quantity of 6000 pieces. Ensure compatibility with existing legacy systems before procurement.

Encoders, Decoders, Converters Selection Notes

Select this component only for maintaining existing designs utilizing the TOIM4232 family. Verify that the 3.6864 MHz clock frequency matches the system requirements. Check if the QFN-20 footprint fits the available PCB space compared to larger packages.

Encoders, Decoders, Converters Part Context

This part belongs to the Vishay TOIM series of SIR IrDA interface circuits. It serves as a space-minimized version of the TOIM4232, offering identical functionality in a smaller QFN-20 package. The series is specifically engineered for serial infrared communication protocols.

Encoders, Decoders, Converters Replacement Considerations

The TOIM4232 is a compatible alternative with identical pinout and functionality but utilizes a larger package. Verify that any replacement maintains the same QFN-20 dimensions if board space is constrained.