MAX3380ECUP

Overview

The MAX3380ECUP is a dual transmitter and dual receiver RS-232 transceiver manufactured by Analog Devices Inc./Maxim Integrated. It operates on a single +2.35V to +5.5V supply voltage with an operating temperature range of 0°C to +70°C. The device features ±15kV ESD protection on all CMOS and RS-232 inputs and outputs, excluding the INVALID pin. It supports data rates up to 460kbps and includes AutoShutdown Plus technology for low-power standby modes. The component is housed in a 20-pin TSSOP package.

Feature Summary

• AutoShutdown Plus feature automatically reduces supply current to 1µA when no valid signal transitions are detected for 30 seconds
• Integrated dual-mode regulated charge pump enables true RS-32 performance from low supply voltages down to +2.35V
• Separate VL logic supply input allows compatibility with mixed-logic voltage systems down to +1.65V
• Enhanced electrostatic discharge protection rated at ±15kV Human Body Model and ±15kV IEC 1000-4-2 Air-Gap Discharge

Applications

• Cell phone data lump cables
• PDA data lump cables
• GPS receivers
• Digital cameras

Procurement Notes

Verify the specific suffix ECUP confirms the commercial temperature range (0°C to +70°C) and 20-pin TSSOP package configuration. Confirm that the ordering information matches the exact part number required for the intended application environment. Check for any recent product change notices or end-of-life announcements from the manufacturer regarding this specific variant.

Selection Notes

Select the MAX3380ECUP when high data rates up to 460kbps are required alongside low-voltage operation. Choose this over the MAX3381E variant if faster slew rates are necessary for noise-sensitive applications. Ensure the system design accommodates the separate VL pin for logic level translation and provides adequate decoupling capacitors for the internal charge pump circuitry.

Part Context

This component belongs to the MAX3380E/MAX3381E family of RS-232 transceivers designed for portable electronics. The 'E' suffix denotes the extended temperature range capability, while 'CUP' specifies the commercial grade and package type. It serves as a bridge between TTL/CMOS logic levels and RS-232 signaling standards in battery-powered devices.

Replacement Considerations

MAX3381ECUP offers identical packaging and pinout but operates at a maximum data rate of 250kbps with a slower slew rate for reduced EMI.