MAX232ACSE+

Overview

The MAX232ACSE+ is a +5V-powered, multichannel RS-232 driver and receiver integrated circuit designed for EIA/TIA-232E and V.28/V.24 communication interfaces. It operates within a supply voltage range of 4.5V to 5.5V and supports data rates up to 200 kbps. The device features two drivers and two receivers providing full-duplex communication. It utilizes an internal charge pump to generate the required ±10V levels from a single +5V supply, eliminating the need for external bipolar power sources. The component is housed in a 16-pin Narrow SO package and is rated for operation across a temperature range of 0°C to +70°C.

Feature Summary

• Integrates dual charge-pump DC-DC converters to generate internal ±10V operating voltages directly from a single +5V supply rail.
• Provides full-duplex signal conversion between TTL/CMOS logic levels and standard RS-232 voltage swings.
• Features high-voltage tolerant inputs capable of withstanding ±30V signals without requiring external level shifting components.

Applications

• Interface translation between microprocessor systems and RS-232 peripherals
• Multidrop RS-232 network connections
• Portable diagnostic equipment utilizing battery power

Procurement Notes

Verify that the specific ordering suffix matches the required commercial temperature grade (0°C to +70°C) and narrow SOIC package configuration. Confirm RoHS compliance status through official manufacturer documentation prior to integration into production designs.

Selection Notes

Select this component when a single +5V supply is available and board space constraints prevent the use of discrete charge pump circuits. Ensure the application does not require extended industrial temperature ranges or integrated ESD protection, as these are not included in this specific variant.

Part Context

This part belongs to the MAX220–MAX249 family of line drivers and receivers manufactured by Analog Devices / Maxim Integrated. The family provides various channel configurations and package options tailored for different RS-232 interface requirements.

Replacement Considerations

Direct functional replacements include the MAX232ACSE and MAX232ACPE. Verify pinout compatibility and thermal specifications before substituting.

FAQ

Does the MAX232ACSE+ require external capacitors for operation?

Yes, the device requires four external capacitors to support the internal charge pump circuitry for generating the necessary RS-232 voltage levels.

What is the maximum input voltage tolerance for the receiver pins?

The receiver inputs are rated to withstand voltages up to ±30V, protecting the internal circuitry during connection to standard RS-232 lines.

Is there a shutdown mode available on the MAX232ACSE+?

No, the MAX232ACSE+ does not feature a dedicated shutdown control pin; it operates continuously once powered.