TRSF3238IDW

Drivers, Receivers, Transceivers Overview

The TRSF3238IDW is a multichannel RS-232 compatible line driver and receiver manufactured by Texas Instruments. It operates from a single 3-V to 5.5-V supply and includes five drivers, three receivers, and a dual charge-pump circuit. The device supports data rates up to 1 Mbit/s with an increased slew rate range of 18 V/µs to 150 V/µs. It features Auto-Powerdown Plus functionality that reduces standby current to 1 µA typical when no activity is detected for approximately 30 seconds. The component provides ±15-kV ESD protection on bus pins using the Human Body Model and utilizes four external 0.1-µF capacitors. It is housed in a 28-pin SOIC (DW) package and operates within a temperature range of -40°C to +85°C.

Drivers, Receivers, Transceivers Feature Summary

• Auto-Powerdown Plus feature significantly reduces supply current during periods of inactivity
• Always-active noninverting receiver output allows ring indicator transmission while powered down
• Accepts 5-V logic inputs even when operating with a 3.3-V supply voltage
• RS-232 bus-pin ESD protection exceeds ±15 kV using the Human Body Model

Drivers, Receivers, Transceivers Applications

• Battery-powered systems
• PDAs and Palmtop PCs
• Notebooks and laptops
• Modems and printers
• Hand-held equipment

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix against the manufacturer's Package Option Addendum to confirm the exact package type and thermal characteristics. Ensure the selected variant matches the required operating temperature range for the intended application environment. Cross-reference the datasheet revision date to confirm compliance with current RoHS standards and material declarations before finalizing procurement orders.

Drivers, Receivers, Transceivers Selection Notes

Select this component for designs requiring multiple serial channels within a compact footprint. The device is suitable for applications needing high ESD tolerance and low standby power consumption. Verify that the system can accommodate the required four external capacitors for the charge pump. Confirm that the 28-pin SOIC package dimensions fit the available PCB space constraints.

Drivers, Receivers, Transceivers Part Context

This device belongs to the TRSF3238 family of multichannel RS-232 transceivers. It is designed as an inter-operable alternative to the TRSF3243, offering similar functionality with specific pinout and feature variations. The product line targets portable electronics where power efficiency and channel density are critical design parameters.

Drivers, Receivers, Transceivers Replacement Considerations

The SN65C3238DWR is documented as a parameter-equivalent substitute. Verify pin compatibility and electrical specifications before implementation.