MAX231CPD

Overview

The MAX231CPD is a +5V-powered, multichannel RS-232 driver and receiver manufactured by Analog Devices Inc./Maxim Integrated. It operates within a temperature range of 0°C to +70°C and utilizes a PDIP-14 package for through-hole mounting. The device provides two drivers and two receivers supporting full-duplex communication with a data rate of 120 kb/s. It functions on a single +5V supply, utilizing an internal charge pump to generate the required ±10V levels. Key electrical parameters include a typical propagation delay of 10 µs, a maximum operating voltage of 13.2V, and a minimum operating voltage of 7.5V.

Feature Summary

• Integrates dual charge-pump circuitry to convert a single +5V supply into the bipolar voltages necessary for RS-232 signaling, eliminating the need for external bipolar power sources.

Applications

• Interface translation between TTL/CMOS logic and RS-232 standards
• Multidrop RS-232 network connections
• Portable diagnostics equipment requiring serial communication

Procurement Notes

Verify that the specific ordering suffix corresponds to the PDIP-14 package and the commercial temperature grade (0°C to +70°C). Confirm compliance with RoHS directives and ensure the component matches the exact manufacturer part number to avoid pinout or functional discrepancies during integration.

Selection Notes

Select this component when designing systems limited to a single +5V power rail. It is suitable for applications requiring two independent transmit and receive channels. Ensure the design accommodates the necessary external capacitors for the charge pump operation as specified in the datasheet.

Part Context

This component belongs to the MAX220–MAX249 family of line drivers and receivers designed for EIA/TIA-232E and V.28/V.24 interfaces. The family offers various channel counts and package options to address different board space and performance requirements.

Replacement Considerations

Direct substitutes within the same family include the MAX232 and MAX233. Verify that alternative parts match the PDIP-14 package and support the required 120 kb/s data rate and +5V single-supply operation.