MAX3319EAE+

Overview

The MAX3319EAE+T is a single-driver, single-receiver RS-232 transceiver designed for operation from a +2.25V to +3.0V supply. It features AutoShutdown Plus technology, reducing supply current to 1µA when idle and 300µA during active transmission. The device supports data rates up to 460kbps with a guaranteed 4V/µs slew rate. It utilizes a dual charge pump requiring only four 0.1µF capacitors. The component operates within a temperature range of -40°C to +85°C and is housed in a 16-pin SSOP package.

Feature Summary

• AutoShutdown Plus functionality automatically reduces power consumption by entering low-power shutdown mode when the RS-232 cable is disconnected or peripheral transmitters remain inactive for over 30 seconds.
• Proprietary low-dropout transmitter output stage enables RS-232-compatible performance using a dual-charge pump powered by a single low-voltage supply.
• Includes a logic-level READY output that asserts high when the internal charge pumps are regulating and the device is ready for transmission.

Applications

• Palmtop Computers
• Hand-Held Instruments
• Cellular Phones

Procurement Notes

Verify the specific suffix 'E' indicates the extended industrial temperature range (-40°C to +85°C) and 'AE' denotes the 16-pin SSOP package configuration. Confirm the '+T' suffix corresponds to reel packaging quantities as specified in the manufacturer's ordering information. Ensure compatibility with the required voltage levels and interface standards before finalizing procurement.

Selection Notes

Select this component for applications requiring minimal external capacitance and ultra-low standby power. The MAX3319 provides one driver and one receiver, distinguishing it from the MAX3318 which offers two of each. Verify that the system can tolerate the slight deviation from strict EIA-232 transmitter voltage levels while maintaining full compliance on receiver inputs.

Part Context

This part belongs to the MAX3316–MAX3319 family of 2.5V RS-232 transceivers. While the MAX3316 and MAX3317 offer two drivers and receivers, the MAX3319 specifically provides a single driver and receiver configuration. This family shares the same core architecture, including the dual charge pump and AutoShutdown Plus feature found in the MAX3318 and MAX3319 models.

Replacement Considerations

The MAX3318CAE serves as a functional substitute within the same family, offering identical electrical characteristics but providing two drivers and two receivers instead of one. Both devices share the same pinout structure regarding power and charge pump connections, though the additional I/O pins on the MAX3318 must be managed appropriately.