MAX3232IDBR

Overview

The MAX3232IDBR is a dual RS-232 line driver and receiver manufactured by Texas Instruments, designed for full-duplex communication. It operates within a supply voltage range of 3 V to 5.5 V and supports data signaling rates up to 250 kbit/s. The device integrates two charge pumps requiring only four external 0.1 µF capacitors. It features ±15 kV electrostatic discharge (ESD) protection on all RS-232 lines. The component is housed in a 16-pin SOIC package with an industrial temperature rating from -40°C to +85°C.

Feature Summary

• Integrates dual drivers and receivers for full-duplex RS-232 communication
• Provides ±15 kV ESD protection on transmit and receive lines
• Operates from a single 3-V to 5.5-V power supply
• Requires only four small external capacitors for charge pump operation

Applications

• Connecting microprocessors or DSPs to serial ports
• Modem and portable instrumentation interfaces
• RS-232 communication in handheld devices
• Industrial control systems requiring ESD protection

Procurement Notes

Verify the suffix 'IDBR' corresponds to the industrial temperature grade (-40°C to +85°C), SOIC-16 package, and tape-and-reel packaging format. Confirm RoHS compliance status and check for specific manufacturing date codes or lot traceability requirements relevant to your assembly process before finalizing orders.

Selection Notes

Select this part when dual-channel RS-232 connectivity is required with robust ESD protection. Ensure the application environment falls within the -40°C to +85°C operating range. Verify that the 250 kbit/s data rate meets system timing constraints and that the 3-V to 5.5-V supply voltage aligns with the target logic levels.

Part Context

This component belongs to the MAX3232 family of multichannel RS-232 transceivers. It shares functional similarities with other variants like the MAX3232IDWR and MAX3232EIDR, differing primarily in package type and temperature rating. The IDBR variant specifically targets surface-mount applications requiring industrial-grade reliability.

Replacement Considerations

TRSMAX3232IDBR is a pin-compatible alternative from Texas Instruments. ICL3232ECBNZ from Renesas offers similar functionality but requires verification of package dimensions and electrical characteristics against the original design specifications.