MAX3317EEAP+

Overview

The MAX3317EEAP+ is a dual-transmitter, dual-receiver RS-232-compatible transceiver manufactured by Analog Devices Inc./Maxim Integrated. It operates on a single +2.25V to +3.0V supply and utilizes a proprietary low-dropout transmitter output stage with a dual charge pump. The device guarantees data rates up to 460kbps and features a 1µA shutdown mode accessible via the SHDN pin, while receivers remain active during shutdown. It requires only four 0.1µF capacitors for operation.

Feature Summary

• Proprietary low-dropout transmitter output stage enables RS-232-compatible performance from +2.25V to +3.0V
• 1µA low-power shutdown mode allows external devices such as modems to be monitored
• Guaranteed 460kbps data rate with 4V/µs slew rate
• Requires only four 0.1µF capacitors for internal voltage generation

Applications

• Palmtop Computers
• Hand-Held Instruments
• GPS Systems
• Cellular Phones

Procurement Notes

Verify the specific suffix EEAP against official documentation to confirm package type and temperature range. Confirm RoHS compliance status through manufacturer datasheets or certificates of conformity. Ensure compatibility with existing BIOS or operating system configurations when implementing shutdown features.

Selection Notes

Select this component for applications requiring RS-232 communication at low voltages without additional power supplies. The MAX3317 differs from the MAX3318/MAX3319 by lacking AutoShutdown Plus, relying instead on manual control via the SHDN pin. Verify that the 20-pin SSOP/TSSOP package fits the design constraints.

Part Context

The MAX3317 belongs to the MAX3316–MAX3319 family of 2.5V, 1µA, 460kbps RS-232-compatible transceivers. This series is designed for portable electronics where power conservation is critical. The MAX3317 specifically provides two drivers and two receivers in a compact footprint.

Replacement Considerations

Public confirmed substitute part numbers: MAX3316EAP+, MAX3318EAP+, MAX3319EAP+. These variants share similar electrical characteristics but differ in driver/receiver counts and shutdown functionality.

FAQ

How does the MAX3317 achieve low power consumption?

It enters a 1µA shutdown mode when the SHDN pin is driven low, turning off the charge pumps and transmitter outputs while keeping receivers active.

What is the minimum supply voltage required for operation?

The device operates from a single +2.25V to +3.0V supply voltage.

Does the MAX3317 support automatic shutdown?

No, it uses manual shutdown via the SHDN pin. Automatic shutdown (AutoShutdown Plus) is available in the MAX3318 and MAX3319 variants.