TRS211IDBG4

Drivers, Receivers, Transceivers Overview

The TRS211IDBG4 is a multichannel RS-232 line driver and receiver manufactured by Texas Instruments. It operates from a single 5-V supply and includes four drivers and five receivers with a dual charge-pump circuit. The device provides ±15-kV ESD protection on bus pins, exceeding the Human-Body Model (HBM) standard. It meets TIA/EIA-232-F and ITU v.28 requirements, supporting data rates up to 120 kbit/s. The package is a 28-pin SSOP (DB). Operating temperature ranges from -40°C to +85°C. Supply current is typically 20 mA, dropping to 1 μA in shutdown mode.

Drivers, Receivers, Transceivers Feature Summary

• Integrated dual charge pump for single-supply operation
• High electrostatic discharge protection on serial port pins
• Independent shutdown and enable control logic
• Compliance with industry-standard RS-232 protocols

Drivers, Receivers, Transceivers Applications

• Battery-powered systems
• Personal digital assistants (PDAs)
• Notebook and laptop computers
• Hand-held equipment

Drivers, Receivers, Transceivers Procurement Notes

Verify that the G4 suffix indicates lead-free and RoHS compliance per the Package Option Addendum. Confirm the DB package designation matches the required 28-pin SSOP footprint. Ensure the 'I' grade rating aligns with the industrial temperature range of -40°C to +85°C for the specific application environment.

Drivers, Receivers, Transceivers Selection Notes

Select this component when a 5-V supply is available and multiple RS-232 channels are needed. The TRS211 offers four drivers and five receivers, providing more flexibility than single-channel alternatives. Consider the shutdown feature for power-sensitive designs requiring low standby current.

Drivers, Receivers, Transceivers Part Context

This part belongs to the TRS211 family of RS-232 transceivers. The IDBG4 variant specifically denotes the industrial temperature range (-40°C to +85°C), the SSOP package type, and lead-free manufacturing. It serves as a robust interface solution for connecting asynchronous controllers to serial ports in portable electronics.

Drivers, Receivers, Transceivers Replacement Considerations

TRS211CDWG4: SOIC package alternative with identical electrical specifications but different thermal characteristics.

Drivers, Receivers, Transceivers FAQ

How does the EN pin function?

The EN pin places receiver outputs into a high-impedance state, allowing wired-OR connections of two RS-232 ports. It does not affect the drivers or charge pumps.

What capacitors are required for the charge pump?

Four external 0.1-μF capacitors are required. Ceramic dielectrics are suggested, though values up to 10 μF can be used without harm.

Does the device support full-duplex communication?

Yes, the TRS211 contains separate drivers and receivers, enabling full-duplex data transmission over the RS-232 interface.