General Description
The MAX3238E/MAX3248E transceivers use Maxim’s revolutionary AutoShutdown Plus™ feature to achieve 10nA supply current. These devices shut down the on board power supply and drivers when they do not sense a valid signal transition on either the receiver or transmitter inputs. This occurs if the RS-232 cable is disconnected or if the transmitters of the connected peripheral are turned off. The devices turn on again when a valid transition is applied to any RS-232 receiver or transmitter input. AutoShutdown Plus automatically achieves this power savings through its on-board circuitry, as no changes are required to the existing BIOS or operating system.

Features
♦ Enhanced ESD Protection on RS-232 I/O Pins and All Logic Pins
    ±15kV—Human Body Model
    ±8kV—IEC 1000-4-2 Contact Discharge
    ±15kV—IEC 1000-4-2 Air-Gap Discharge
♦ Guaranteed Data Rate: 250kbps
♦ 10nA Low-Power Shutdown with Receivers Active
♦ Schmitt Triggers on All Inputs
♦ Flow-Through Pinout
♦ Meets EIA/TIA-232 Specifications Down to 3.0V
♦ Guaranteed 6V/µs Slew Rate
♦ Low-Level Logic Thresholds (MAX3248E)
♦ RS-232-Compatible Outputs to 2.7V