TRS3318CDBRG4

Drivers, Receivers, Transceivers Overview

The TRS3318CDBRG4 is a dual-driver, dual-receiver RS-232 transceiver designed for low-voltage operation. It supports data rates up to 460 kbps and operates from a single 2.25-V to 3-V supply. The device integrates auto-powerdown plus functionality, reducing supply current to 1 μA in standby mode when drivers are inactive for over 30 seconds. It features ±15-kV ESD protection on RS-232 I/O pins using the Human-Body Model method. The component utilizes a proprietary low-dropout driver output stage and requires only four 0.1-μF capacitors for its dual charge pump. It is housed in a 20-pin SSOP package.

Drivers, Receivers, Transceivers Feature Summary

• Auto-Powerdown Plus feature automatically reduces power consumption by disabling the charge pump and drivers after 30 seconds of inactivity.
• Integrated high-level electrostatic discharge (ESD) protection rated at ±15 kV HBM on all RS-232 input and output pins.
• Low supply current consumption with a typical operating current of 300 μA and standby current as low as 1 μA.
• Proprietary low-dropout driver output stage enables full RS-232 signal swings from a single 2.25-V to 3-V supply.

Drivers, Receivers, Transceivers Applications

• Battery-powered portable systems
• Personal Digital Assistants (PDAs)
• Cellular phones
• Notebook computers
• Hand-held equipment

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix 'CDBRG4' against the manufacturer's latest Package Option Addendum. The datasheet indicates that the TRS3318CDBRG4 variant is listed as OBSOLETE status. Confirm availability through authorized distributors or check for replacement components within the same family before finalizing procurement plans.

Drivers, Receivers, Transceivers Selection Notes

Select this component for applications requiring low-voltage RS-232 communication with minimal power consumption. Ensure the system supply voltage falls within the 2.25-V to 3-V range. Verify that the 20-pin SSOP package dimensions fit the PCB layout constraints. Consider the obsolete status when designing for long-term production runs.

Drivers, Receivers, Transceivers Part Context

The TRS3318 series belongs to Texas Instruments' portfolio of RS-232 interface integrated circuits. These devices are engineered to provide reliable serial communication in space-constrained, battery-operated environments. The TRS3318 specifically targets markets where power efficiency and robust ESD protection are critical design requirements.

Drivers, Receivers, Transceivers Replacement Considerations

Public documentation lists the TRS3318CDBRG4 as obsolete. Potential replacements include other variants within the TRS3318 family, such as the TRS3318IPWR, which shares similar electrical characteristics but may differ in temperature range or packaging.