MAX3223IDB

Overview

The MAX3223IDB is a fully compliant RS-232 transceiver manufactured by Texas Instruments, designed for single-supply operation. It integrates two drivers and two receivers within a 20-pin SSOP package. The device supports data rates up to 250 kbps and operates on a supply voltage range of 3 V to 5.5 V. It features a low standby current of 1 mA when the shutdown pin is activated. The component functions reliably across an industrial temperature range from -40°C to +85°C. It includes internal charge pumps that require only four external 0.1 µF capacitors, eliminating the need for dual voltage supplies.

Feature Summary

• Integrates dual drivers and dual receivers for full-duplex communication in a compact surface-mount package.
• Operates from a single 3 V to 5.5 V power supply with integrated charge pump circuitry.
• Provides ESD protection exceeding ±15 kV according to Human Body Model standards.

Applications

• Industrial control systems requiring serial communication interfaces
• Portable battery-powered equipment utilizing single-supply logic
• Modems and fax machines implementing RS-232 protocols

Procurement Notes

Verify the specific suffix against official manufacturer documentation to confirm exact packaging and environmental compliance status. Confirm whether the part is currently active or end-of-life through authorized distributors. Ensure the ordering information matches the required tape-and-reel or tube configuration for your assembly process.

Selection Notes

Select this component when a dual-driver RS-232 solution is required for space-constrained designs. Verify that the 250 kbps data rate meets system timing requirements. Ensure the 20-SSOP footprint aligns with the PCB layout constraints. Consider thermal performance within the specified operating temperature range during integration.

Part Context

This device belongs to the MAX3223 family of RS-232 transceivers. It shares functional similarities with other members like the MAX3223EIDBR but differs in speed specifications and package availability. The IDB suffix specifically denotes the industrial temperature grade and SSOP-20 physical form factor used in this variant.

Replacement Considerations

MAX3223EIDBR: Offers higher data rates but requires verification of package compatibility.

FAQ

What is the maximum data rate supported by the MAX3223IDB?

The MAX3223IDB supports data rates up to 250 kbps.

Does the MAX3223IDB require external inductors for its charge pump?

No, the device uses internal charge pumps that require only four external 0.1 µF capacitors.

What is the ESD protection rating for the MAX3223IDB?

The transceiver provides ESD protection greater than ±15 kV according to the Human Body Model specification.