MAX3221CAE+T

Overview

The MAX3221CAE+T is a single-driver, single-receiver RS-232 transceiver in a 16-pin SSOP package. It operates from a +3.0V to +5.5V supply and achieves 1µA current via AutoShutdown™ when no valid signal is detected on receiver inputs for 30µs. The device supports data rates up to 235kbps with typical propagation delays of 0.3µs. Internal dual charge pumps generate ±5.5V using only 0.1µF capacitors at 3.3V operation. The operating temperature range is 0°C to +70°C.

Feature Summary

• AutoShutdown technology reduces supply current to 1µA by disabling the onboard power supply and drivers when no valid RS-232 signal is present on receiver inputs.

Applications

• Battery-powered equipment
• Hand-held equipment
• Portable diagnostics equipment

Procurement Notes

Verify the specific suffix 'CAE' against the manufacturer's official documentation to confirm the commercial temperature range (0°C to +70°C) and SSOP-16 package configuration. Ensure that the ordering information matches the exact part number required for the intended application environment.

Selection Notes

Select this component for applications requiring low-power standby modes where cable disconnection or peripheral shutdown occurs. Verify that the system logic levels are compatible with the specified input thresholds. Confirm that the external capacitor values align with the selected supply voltage to ensure proper charge pump operation.

Part Context

This part belongs to the MAX3221/MAX3223/MAX3243 family of +3V to +5.5V RS-232 transceivers. While the MAX3223 offers two drivers and receivers, and the MAX3243 provides three drivers and five receivers with an always-active complementary output, the MAX3221 specifically provides one driver and one receiver in a compact 16-pin form factor.

Replacement Considerations

MAX3221CDBE4