MAX220CPE

Overview

The MAX220CPE is a +5V-powered, multichannel RS-232 line driver and receiver manufactured by Analog Devices Inc./Maxim Integrated. It operates within a supply voltage range of 4.5V to 5.5V and features an integrated charge pump that generates internal ±10V rails from the single +5V input, eliminating the need for external bipolar supplies. The device provides two drivers and two receivers in a 16-pin PDIP package. Electrical characteristics include a typical transmitter propagation delay of 4µs (TLL to RS-232) and 10µs maximum, with a receiver propagation delay of 0.6µs typical and 3µs maximum. It supports data rates up to 200kbps and includes a shutdown mode drawing only 10µA.

Feature Summary

• Integrated charge pump circuitry eliminates the requirement for external bipolar ±12V power supplies.
• Enables single +5V supply operation for simplified system design.
• Includes a low-power shutdown mode to reduce overall power consumption.

Applications

• Interface Translation
• Multidrop RS-232 Networks
• Portable Diagnostics Equipment

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific 'C' suffix indicates the commercial temperature range (0°C to +70°C). Ensure the PDIP-16 package matches the target PCB footprint requirements before finalizing procurement orders.

Selection Notes

Select this component when designing systems requiring RS-232 communication without access to negative voltage rails. The MAX220 is suitable for applications where board space is limited but external capacitors are acceptable. Compare against MAX232 or MAX233 if integrated on-chip capacitors are preferred to further minimize external component count.

Part Context

The MAX220 belongs to the MAX220–MAX249 family of +5V-powered RS-232 transceivers. This series is designed for EIA/TIA-232E and V.28/V.24 interfaces. The CPE variant specifically denotes the commercial temperature grade housed in a plastic dual in-line package.

Replacement Considerations

Public confirmed substitutes include MAX232CPE and MAX233CPE. Verify pin compatibility and capacitor requirements, as the MAX233 integrates internal capacitors while the MAX220 requires external components.