MAX3232IDRG4

Overview

The MAX3232IDRG4 is a dual RS-232 transceiver manufactured by Texas Instruments, designed for low-power communication applications. It operates within a supply voltage range of 3 V to 5.5 V and supports data rates up to 250 kb/s. The device integrates two drivers and two receivers in full-duplex configuration, housed in a 16-pin SOIC package with surface-mount installation. It functions reliably across an industrial temperature range from -40°C to +85°C. Key electrical specifications include a maximum operating supply current of 1 mA and ESD protection rated at 15 kV.

Feature Summary

• Integrates charge pump circuitry to generate RS-232 voltage levels from a single low-voltage power supply
• Provides robust electrostatic discharge protection on all pins to withstand high-voltage interference events
• Features low standby current mode to extend battery life in portable electronic devices

Applications

• Mobile phones and personal digital assistants requiring serial communication interfaces
• Portable instruments and medical equipment utilizing battery-powered operation
• Modems and pagers needing reliable half-duplex or full-duplex data transmission

Procurement Notes

Verify the suffix 'G4' indicates lead-free composition and compliance with RoHS directives as per Texas Instruments documentation. Confirm the SOIC-16 package dimensions match the target PCB footprint. Ensure the industrial temperature grade (-40°C to +85°C) aligns with the operational environment requirements before finalizing procurement.

Selection Notes

Select this component when a dual-channel RS-232 interface is required with low power consumption constraints. The 3 V to 5.5 V input range allows compatibility with both 3.3 V and 5 V logic systems. Compare against the MAX3232IDR if lead-free certification is not mandatory, noting that the G4 suffix specifically denotes environmental compliance attributes.

Part Context

This part belongs to the MAX3232 family of multichannel RS-232 line drivers and receivers. It serves as a successor or variant to earlier versions like the MAX3232IDR, incorporating specific manufacturing updates indicated by the suffix. The series is widely recognized for its ability to operate efficiently from a single power source without external inductors.

Replacement Considerations

The MAX3232IDR is a functional equivalent within the same family, differing primarily in packaging or environmental compliance details rather than core electrical performance. Verify pinout compatibility and package dimensions before substitution.