MAX232ID

Overview

The MAX232ID is a dual EIA-232 driver and receiver integrated circuit manufactured by Texas Instruments. It operates from a single 5 V supply, utilizing internal charge pumps to generate the necessary positive and negative voltages for RS-232 signal levels. The device supports data rates up to 120 kb/s with full-duplex communication capabilities. It features two drivers and two receivers within a 16-pin SOIC-Narrow package. Electrical specifications include a minimum operating voltage of 4.5 V and a maximum of 5.5 V, with a typical operating current of 10 mA. The component is rated for an industrial temperature range spanning from -40°C to +85°C.

Feature Summary

• Integrates dual drivers and dual receivers for complete RS-232 transceiver functionality in a compact surface-mount package.
• Utilizes on-chip charge pump circuitry to derive required bipolar voltage rails directly from a single 5 V power source.
• Provides built-in electrostatic discharge (ESD) protection mechanisms to safeguard interface connections.

Applications

• Serial communication interfaces between microcontrollers and personal computers
• Modem connection circuits in embedded systems
• Industrial equipment requiring RS-232 protocol compliance

Procurement Notes

Verify the specific suffix 'ID' confirms the industrial temperature grade (-40°C to +85°C) and SOIC-16 narrow package configuration. Confirm RoHS compliance status through official manufacturer documentation or authorized distributor declarations prior to integration into regulated assemblies.

Selection Notes

Select this component when a single 5 V supply is available and RS-232 signaling is required. Ensure the design accommodates external capacitors for the charge pump circuit. Verify that the 120 kb/s speed limit meets application requirements and that the SOIC-16 footprint aligns with PCB layout constraints.

Part Context

This part belongs to the MAX232 family of RS-232 transceivers. Variants such as MAX232DR offer commercial temperature ranges, while MAX232NE4 utilizes a PDIP package. The MAX232ID specifically targets industrial environments requiring wider thermal tolerance compared to standard commercial versions.

Replacement Considerations

MAX232IDR is a tape-and-reel variant of the same electrical specification. MAX232IDRG4 represents a lead-free version within the same package and performance profile.