TRS211IDBRG4

Drivers, Receivers, Transceivers Overview

The TRS211IDBRG4 is a 5-V multichannel RS-232 line driver and receiver manufactured by Texas Instruments. It integrates four drivers, five receivers, and a dual charge-pump circuit within a 28-pin SSOP package. The device operates at data signaling rates up to 120 kbit/s with a maximum slew rate of 30 V/µs. It requires four external 0.1-µF capacitors for the charge pump and functions from a single 5-V supply. The component provides ±15-kV ESD protection on bus pins using the Human-Body Model (HBM). It includes dedicated shutdown (SHDN) and enable (EN) control pins to manage power consumption and output states.

Drivers, Receivers, Transceivers Feature Summary

• Integrates four line drivers and five line receivers with a dual charge-pump circuit for single-supply operation.
• Provides enhanced electrostatic discharge protection on serial-port connection pins, including ground, rated at ±15 kV via the Human-Body Model.
• Features independent shutdown and enable control inputs to minimize supply current and allow wired-OR connections.
• Meets or exceeds TIA/EIA-232-F and ITU v.28 standards for asynchronous communication controllers.

Drivers, Receivers, Transceivers Applications

• Battery-powered systems
• Personal Digital Assistants (PDAs)
• Notebooks and laptops
• Palmtop PCs
• Hand-held equipment

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix 'G4' against the latest Package Option Addendum to confirm lead-free status and environmental compliance. Confirm that the SSOP-28 package drawing aligns with PCB footprint requirements. Ensure the design supports the required 0.1-µF external capacitors for the internal charge pump circuitry as specified in the typical operating application diagram.

Drivers, Receivers, Transceivers Selection Notes

Select this component when designing 5-V RS-232 interfaces requiring multiple transmit and receive channels in a compact surface-mount package. The inclusion of separate enable and shutdown controls makes it suitable for applications needing low-power standby modes or multi-drop bus configurations. Verify that the system voltage remains within the 4.5-V to 5.5-V recommended operating range.

Drivers, Receivers, Transceivers Part Context

This part belongs to the TRS211 family of multichannel RS-232 transceivers. It is functionally similar to the MAX213 but offers distinct pinout and control features. The 'I' designation indicates an industrial temperature range of -40°C to +85°C, while the 'DB' suffix specifies the 28-lead plastic small-outline package.

Drivers, Receivers, Transceivers Replacement Considerations

TRS211IDBR

Drivers, Receivers, Transceivers FAQ

How does the EN pin differ from the SHDN pin?

The SHDN pin disables the charge pumps and transmitter outputs to reduce supply current. The EN pin places only the receiver outputs into a high-impedance state, allowing for wired-OR connections without affecting the drivers or charge pumps.

What are the capacitor requirements for the charge pump?

The device requires four external 0.1-µF capacitors connected to the charge pump terminals. Ceramic dielectrics are suggested, and values up to 10 µF can be used to reduce output impedance if necessary.

Does the device support full-duplex communication?

Yes, the TRS211 consists of independent line drivers and receivers, supporting full-duplex asynchronous communication at rates up to 120 kbit/s.