MAX232ECPWR

Overview

The MAX232ECPWR is a dual RS-232 transceiver manufactured by Texas Instruments, designed for EIA/TIA-232-F and V.28/V.24 communication standards. It integrates two drivers and two receivers within a single chip, operating on a single 5V supply voltage ranging from 4.5V to 5.5V. The device features an internal charge pump circuit that eliminates the need for external positive and negative voltage sources. It supports data rates up to 120kb/s and operates within an industrial temperature range of -40°C to +85°C. Packaged in a TSSOP-16 surface-mount format, it draws a typical supply current of 10mA.

Feature Summary

• Integrates dual drivers and dual receivers for full-duplex communication without requiring external split supplies.
• Includes an internal charge pump circuit to generate required voltage levels from a single 5V source.
• Provides robust electrostatic discharge (ESD) protection rated at 15kV on all RS-232 lines.

Applications

• Industrial control systems requiring reliable serial communication interfaces.
• Portable battery-powered equipment utilizing single-supply operation.
• Modem and fax machine interface circuits.

Procurement Notes

Verify the specific suffix 'E' indicates extended industrial temperature performance (-40°C to +85°C) compared to commercial variants. Confirm the 'PWR' suffix denotes the TSSOP-16 package with tape-and-reel packaging. Cross-reference the manufacturer part number against official Texas Instruments documentation to ensure compatibility with design specifications before procurement.

Selection Notes

Select this component when dual-channel RS-232 connectivity is required in space-constrained surface-mount designs. Ensure the application environment falls within the specified -40°C to +85°C operational range. Verify that the 120kb/s data rate meets system timing requirements and that the 10mA supply current aligns with power budget constraints.

Part Context

This part belongs to the MAX232 family of line transceivers, widely used for converting TTL/CMOS logic levels to standard RS-232 voltages. The MAX232E variant specifically targets industrial applications with wider temperature tolerance. The CPWR suffix identifies the thin-shrink small-outline package configuration optimized for automated assembly processes.

Replacement Considerations

MAX232IDWR: Commercial grade version with SOIC-16 package and -40°C to +70°C temperature range. MAX232ESE+: Analog Devices/Maxim Integrated equivalent in SSOP-16 package. ADM232ANZ: Analog Devices alternative in DIP-16 package with similar electrical characteristics.