MAX230CWP+

Overview

The MAX230CWP+ is a +5V-powered, multichannel RS-232 driver/receiver from the MAX220–MAX249 family. It operates on a single +5V supply and utilizes an internal charge pump to generate ±10V for RS-232 signaling. The device features five drivers and three receivers with a data rate of 120kbps. It includes a shutdown mode that reduces power consumption to 1μW. The component is housed in a 28-pin Wide SOIC package and supports an operating temperature range of 0°C to +70°C.

Feature Summary

• Integrates dual charge-pump DC-DC voltage converters to eliminate the need for external bipolar supplies.
• Provides a low-power shutdown mode that significantly reduces current draw during idle periods.
• Features TTL/CMOS-compatible inputs and outputs for direct interfacing with microcontrollers.

Applications

• Interface translation between TTL/CMOS logic and RS-232 serial ports
• Multidrop RS-232 network communication systems
• Portable diagnostic equipment requiring single-supply operation

Procurement Notes

Verify the specific suffix 'C' confirms the commercial temperature range (0°C to +70°C) and 'WP+' indicates the lead-free wide SOIC package. Confirm RoHS compliance status through official manufacturer documentation before finalizing procurement specifications.

Selection Notes

Select this part when designing circuits that require multiple RS-232 channels without access to negative voltage rails. Ensure the application does not exceed the 120kbps data rate limit or require higher drive currents than the internal charge pumps can support under heavy load conditions.

Part Context

This component belongs to the Maxim Integrated MAX220–MAX249 series of line drivers and receivers. These devices are engineered specifically for EIA/TIA-232E and V.28/V.24 communications interfaces where space savings and simplified power requirements are critical design constraints.

Replacement Considerations

Compatible substitutes within the same family include the MAX230A and MAX230E. Verify that alternative part numbers match the required package type and temperature rating before implementation.

FAQ

How does the MAX230CWP+ generate RS-232 voltages?

It uses two internal charge-pump circuits powered by a single +5V supply to generate the necessary positive and negative voltages for RS-232 signaling.

What is the maximum data rate supported by this device?

The datasheet specifies a maximum data rate of 120kbps for normal operation.

Does the device support bidirectional communication?

Yes, it contains both transmitters and receivers, allowing for full-duplex communication over RS-232 links.