MAX232ACPE+

Overview

The MAX232ACPE+ is a +5V-powered, multichannel RS-232 line driver and receiver intended for EIA/TIA-232E and V.28/V.24 communications interfaces. It features an integrated charge pump circuit that eliminates the need for bipolar ±12V supplies, enabling single-supply operation from a +5V source. The device provides two drivers and two receivers in a 16-pin PDIP package. Electrical specifications include a data rate of 200 kbps, a supply voltage range of 4.5V to 5.5V, and an operating temperature range of 0°C to +70°C.

Feature Summary

• Integrated charge pump circuitry enables single +5V supply operation without external bipolar power sources
• Provides interface translation between TTL/CMOS logic levels and RS-232 signal voltages
• Includes a low-power shutdown mode to minimize energy consumption when inactive

Applications

• Interface translation for serial communication systems
• Multidrop RS-232 network connections
• Portable diagnostic equipment requiring compact serial interfaces

Procurement Notes

Verify component authenticity by checking manufacturer markings against official datasheet pinout diagrams. Confirm the AC suffix indicates the commercial temperature grade (0°C to +70°C) and the PE suffix corresponds to the 16-pin plastic DIP package. Ensure all required external capacitors are sourced according to the specific application requirements.

Selection Notes

Select this component when designing systems with only a +5V power rail available. It is suitable for applications where board space is limited due to the elimination of external dual-polarity supplies. Consider the 200 kbps data rate limit and the requirement for four external capacitors for the charge pump circuit during PCB layout.

Part Context

This part belongs to the MAX220–MAX249 family of +5V-powered RS-232 transceivers manufactured by Analog Devices / Maxim Integrated. The MAX232 variant specifically offers two drivers and two receivers, distinguishing it from other family members with different channel counts or integrated capacitor options.

Replacement Considerations

Direct substitutes within the same family include the MAX232CPE+, which shares identical electrical characteristics but may differ in manufacturing lot revisions. Verify pin compatibility and thermal performance before swapping.