TRS3222EIDW

Drivers, Receivers, Transceivers Overview

The TRS3222EIDW is a multichannel RS-232 line driver and receiver manufactured by Texas Instruments. It operates from a single 3-V to 5.5-V supply and supports data signaling rates up to 500 kbit/s with a maximum slew rate of 30 V/µs. The device integrates two drivers and two receivers, featuring ±15-kV human-body model ESD protection on all RS-232 bus pins. It requires four external capacitors for the dual charge pump circuit. The component is housed in a 20-pin SOIC (DW) package and is rated for an operating temperature range of -40°C to 85°C.

Drivers, Receivers, Transceivers Feature Summary

• Provides electrical interface between asynchronous communication controllers and serial-port connectors while meeting TIA/EIA-232-F standards.
• Integrates dual charge-pump circuitry requiring only four small external capacitors for operation from a single low-voltage supply.
• Includes robust pin-to-pin ESD protection rated at ±15-kV HBM for serial-port connection pins and ground.
• Offers flexible power management through a dedicated power-down mode that reduces standby current to 1 µA typical.

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 against the manufacturer's Package Option Addendum to confirm the exact package type and temperature grade. Confirm whether the requested part number corresponds to the active or obsolete status listed in the documentation. Ensure compatibility with RoHS and lead-free manufacturing requirements specified for the device family.

Drivers, Receivers, Transceivers Selection Notes

Select this component when designing interfaces requiring dual RS-232 channels with high ESD tolerance. Verify that the system voltage falls within the 3-V to 5.5-V range and that the required data rate does not exceed 500 kbit/s. Consider the 20-pin SOIC footprint constraints and ensure sufficient board space for the four required external charge-pump capacitors.

Drivers, Receivers, Transceivers Part Context

This device belongs to the TRS3222E series of multichannel RS-232 transceivers. The 'I' suffix indicates the extended industrial temperature range (-40°C to 85°C), while the 'DW' suffix designates the 20-pin Small Outline Integrated Circuit package. It serves as a standard interface solution for legacy serial communication ports in portable electronics.

Drivers, Receivers, Transceivers Replacement Considerations

The datasheet identifies the TRSF3221E as an alternative high-speed pin-compatible device offering 1 Mbit/s performance. Designers should verify pinout compatibility and signal integrity requirements before substituting this component with higher-speed variants.