MAX201CWE+T

Drivers, Receivers, Transceivers Overview

The MAX201CWE+T is a dual-channel RS-232 transceiver designed for single-supply operation. It operates from a +5V logic supply and accepts an external V+ supply ranging from +9.0V to +13.2V. The device integrates a voltage doubler charge pump to generate the required positive rail, while utilizing the external V+ input as the negative supply reference. It contains two drivers and two receivers with TTL/CMOS-compatible inputs. The component requires four external 0.1µF capacitors for charge-pump operation and supports data rates exceeding 120kbps under standard EIA/TIA-232E loading conditions.

Drivers, Receivers, Transceivers Feature Summary

• Integrates a voltage doubler charge pump to eliminate the need for a bipolar ±12V power supply
• Accepts an external V+ supply in the +9V to +13.2V range to serve as the negative voltage rail
• Provides full duplex communication through two independent drivers and two receivers
• Maintains compliance with EIA/TIA-232E output signal levels at high data rates

Drivers, Receivers, Transceivers Applications

• Battery-powered equipment requiring single-supply RS-232 connectivity
• Handheld devices with limited board space and power constraints
• Portable diagnostic equipment interfacing with serial peripherals

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix against manufacturer documentation to confirm package type and temperature grade. Confirm that the external V+ supply requirement aligns with system design capabilities, as this variant differs from standard +5V-only transceivers. Ensure capacitor selection meets stability requirements over the operating temperature range.

Drivers, Receivers, Transceivers Selection Notes

Select this component when the system provides a dedicated +9V to +13.2V rail but lacks a negative voltage source. This part reduces component count compared to solutions requiring separate negative regulators. Verify that the external V+ supply remains stable during startup to ensure proper charge-pump initialization and signal integrity.

Drivers, Receivers, Transceivers Part Context

This device belongs to the MAX200-MAX209 family of +5V RS-232 transceivers. Unlike variants such as the MAX202 which require four external capacitors and generate both positive and negative voltages internally, the MAX201 utilizes an external positive supply for its negative rail generation. This configuration simplifies power architecture in systems where a higher positive voltage is already available.

Drivers, Receivers, Transceivers Replacement Considerations

Public confirmed substitute part numbers: MAX201CWE.