MAX3221IPWG4

Overview

The MAX3221IPWG4 is a single-channel RS-232 line driver and receiver manufactured by Texas Instruments. It operates within a supply voltage range of 3V to 5.5V and supports data rates up to 250kbps. The device features ±15-kV electrostatic discharge (ESD) protection on all RS-232 lines, ensuring robust performance in harsh environments. It utilizes external 0.1µF capacitors for charge pumping, eliminating the need for inductors or transformers. The component is housed in a 16-pin TSSOP package with an industrial operating temperature range of -40°C to +85°C.

Feature Summary

• Integrated ±15-kV ESD protection on transmit and receive lines
• Single-supply operation from 3V to 5.5V
• Low standby current with AutoShutdown feature
• No external inductors required for charge pump

Applications

• Industrial serial communication interfaces
• Portable battery-powered devices
• Modems and fax machines
• Printers and peripheral connections

Procurement Notes

Verify the G4 suffix indicates lead-free packaging compliant with RoHS standards. Confirm the IPW package designation corresponds to the 16-TSSOP form factor. Ensure the grade matches application thermal requirements. Cross-reference the manufacturer part number against official distributor catalogs to confirm authenticity and revision status before procurement.

Selection Notes

Select this component for applications requiring a single full-duplex RS-232 channel with high ESD immunity. It is suitable for systems powered by 3V or 5V supplies where low power consumption is critical. Compare pinout compatibility with existing designs when replacing older MAXIM versions. Verify that the 250kbps speed meets the specific baud rate requirements of the target interface.

Part Context

This part belongs to the MAX3221 family of true 3V to 5.5V RS-232 transceivers. The 'G4' suffix typically denotes a lead-free version of the standard MAX3221IPWR. It shares functional similarities with other single-channel RS-232 drivers but distinguishes itself through integrated ESD protection and low-power characteristics. The TSSOP package offers a compact footprint for space-constrained PCB layouts.

Replacement Considerations

• MAX3221IPWR
• MAX3221EIPWR

FAQ

Does the MAX3221IPWG4 require external inductors?

No, the device uses an internal charge pump circuit that requires only external 0.1µF capacitors.

What is the ESD protection rating?

The device provides ±15-kV ESD protection on all RS-232 lines according to the IEC 1000-4-2 standard.

Is the MAX3221IPWG4 compatible with 5V logic?

Yes, it operates with a single 3V to 5.5V supply and is compatible with 5V logic levels.