MAX3232CPWG4

Overview

The MAX3232CPWG4 is a dual driver/receiver RS-232 transceiver manufactured by Texas Instruments. It operates from a single 3.0 V to 5.5 V power supply and supports data rates up to 250 kbit/s. The device features two drivers and two receivers with full-duplex communication capability. It includes an integrated dual charge pump requiring only four external 0.1 µF capacitors. The component provides ±15 kV ESD protection on all RS-232 lines and meets TIA/EIA-232-F standards. It is housed in a 16-pin TSSOP package and functions within a temperature range of 0°C to +70°C.

Feature Summary

• Integrated dual charge pump enables operation from a single low-voltage supply without external inductors.
• Provides robust ±15 kV electrostatic discharge (ESD) protection on serial port connection pins.
• Fully compliant with TIA/EIA-232-F interface standards for reliable asynchronous communication.
• Low power consumption design suitable for battery-operated systems.

Applications

• Connecting microprocessors or DSPs to serial ports on PCs, laptops, and handheld devices.
• Industrial control systems requiring isolated serial communication interfaces.
• Point-of-sale (POS) terminals and barcode scanners.
• Medical equipment with serial data transmission requirements.

Procurement Notes

Verify the suffix 'G4' indicates lead-free status and RoHS compliance per Texas Instruments documentation. Confirm the 'C' designation specifies the commercial temperature range of 0°C to +70°C. Ensure the 'W' suffix corresponds to the TSSOP-16 package variant. Cross-reference the manufacturer part number with authorized distributors to avoid counterfeit components.

Selection Notes

Select this component when a dual-channel RS-232 interface is required for 3V to 5.5V logic systems. It is appropriate for designs needing high ESD immunity and low standby current. Compare against the MAX3232E series if an extended industrial temperature range (-40°C to +85°C) is necessary. Consider pin-compatible alternatives like the SN65C3232 for higher speed requirements up to 1 Mbps.

Part Context

The MAX3232CPWG4 belongs to the MAX3232 family of low-power RS-232 transceivers. This series is widely used in embedded systems for serial communication. The specific CPWG4 variant denotes the commercial grade, TSSOP packaging, and green (lead-free/RoHS) manufacturing process. It serves as a standard solution for legacy serial port interfacing in modern compact electronics.

Replacement Considerations

MAX3232CPWR: Same electrical specifications and package; verify suffix differences regarding tape-and-reel vs. tube packaging. MAX3232ECPWR: Offers an extended temperature range (-40°C to +85°C) instead of commercial (0°C to +70°C). SN65C3232PW: Provides higher data rates up to 1 Mbps while maintaining pin compatibility.