MAX220EPE

Overview

The MAX220EPE is a dual RS-232 driver and receiver integrated circuit designed for EIA/TIA-232E communications interfaces. It operates from a single +5V supply using an internal charge pump to generate the required ±10V levels, eliminating the need for external bipolar supplies. The device features two drivers and two receivers with TTL/CMOS-compatible inputs and outputs. Electrical specifications include a typical data rate of 120 kbps, a supply current of 2 mA at no load, and an operating temperature range of -40°C to +85°C. It is housed in a 16-pin PDIP package.

Feature Summary

• Integrated charge pump circuitry enables single-supply operation without requiring external bipolar voltage sources.
• Provides full RS-232 signal level translation between TTL/CMOS logic and standard RS-232 voltage swings.
• Includes input protection allowing safe connection to RS-232 lines even when the device power is off.

Applications

• Interface translation between microcontroller systems and RS-232 peripherals
• Multidrop RS-232 network connections
• Portable diagnostics equipment

Procurement Notes

Verify the component authenticity by checking the manufacturer marking against official documentation. Confirm the specific suffix 'EPE' corresponds to the extended temperature grade and PDIP-16 package variant. Ensure the source provides valid traceability records for industrial or commercial deployment.

Selection Notes

Select this part when designing systems that require RS-232 connectivity but are constrained to a single +5V power rail. It is suitable for applications needing two independent communication channels. Consider alternative models within the MAX220-MAX249 family if higher channel counts or integrated onboard capacitors are required to minimize board space.

Part Context

This component belongs to the MAX220–MAX249 family of +5V-powered multichannel RS-232 drivers and receivers. The family offers various configurations ranging from single-channel to eight-channel devices in multiple package types. The MAX220 specifically provides a dual-driver and dual-receiver solution optimized for general-purpose serial communication tasks.

Replacement Considerations

Compatible substitutes include other members of the MAX220-MAX249 series such as the MAX232EPE or MAX233EPE, provided the pinout and channel count requirements align with the design constraints.