MAX3320TCAP

Overview

The MAX3320TCAP is a true RS-232 transceiver integrated with a microprocessor power-on reset circuit, manufactured by Analog Devices Inc./Maxim Integrated. It operates on a single +3V to +5.5V supply and supports data rates up to 250kbps. The device features two drivers and two receivers in a 20-pin SSOP package. It utilizes AutoShutdown Plus technology to achieve a low shutdown supply current of 4µA. The 'T' suffix indicates a reset threshold voltage of 3.08V, suitable for 3.3V systems. The operating temperature range is 0°C to +70°C.

Feature Summary

• Integrates a precise power-on reset supervisor with an RS-232 transceiver
• Features AutoShutdown Plus for ultra-low 4µA standby current consumption
• Includes dual charge pumps requiring only four small external capacitors
• Provides active receivers and always-active power-on reset functionality

Applications

• Palmtop Computers
• Portable/Battery-Powered Equipment
• Hand-Held Equipment
• Peripherals
• Printers

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to ensure the correct reset threshold voltage and temperature grade are selected. Confirm that the component meets all required environmental standards and RoHS compliance specifications before finalizing procurement orders.

Selection Notes

Select this component when a combined RS-232 interface and system supervision function is required within a compact footprint. The MAX3320TCAP is appropriate for designs needing a 3.08V reset threshold and commercial temperature operation. Ensure the application benefits from the low-power AutoShutdown Plus feature to extend battery life in portable devices.

Part Context

This part belongs to the MAX3320 family of true RS-232 transceivers. The 'C' suffix denotes the commercial temperature range (0°C to +70°C), while the 'T' suffix specifies the 3.08V reset threshold voltage. The 'AP' suffix indicates the SSOP package type. This integration simplifies board design by reducing the component count for both communication and power management.

Replacement Considerations

Direct replacements include other members of the MAX3320 family such as MAX3320ACAP+ or MAX3320BCAP+, provided the reset threshold requirements match the specific application needs. Verify pin compatibility and electrical characteristics before substitution.

FAQ

What is the reset threshold voltage for the MAX3320TCAP?

The 'T' suffix indicates a reset threshold voltage of 3.08V.

How does AutoShutdown Plus reduce power consumption?

It shuts down the internal power supply and drivers after 30 seconds of inactivity, reducing supply current to 4µA.

What is the maximum data rate supported by this device?

The device guarantees a data rate of up to 250kbps.