MAX3238CAI+

MAX3238CAI+ is a true RS-232 transceiver that achieves a 1µA supply current with AutoShutdown Plus™ feature. When the device does not sense a valid signal transition on either the receiver or transmitter inputs within 30sec, the on-board power supply and drivers shut down. This occurs if the RS-232 cable is disconnected or if the transmitters of the connected peripheral are inactive. The system turns on again when a valid transition is applied to any RS-232 receiver or transmitter input, saving power without changes to the existing BIOS or operating system. The 5-driver/3-receiver complete serial port is a 3V-powered EIA/TIA-232 and V.28/V.24 communications interface intended for notebook or subnotebook computer applications. Applications include high-speed modems, battery-powered equipment, hand-held equipment, peripherals, printers.

• Guaranteed data rate: 250kbps
• Receivers active in AutoShutdown Plus mode
• Meets EIA/TIA-232 specifications down to 3.0V
• Flow-through pinout
• Supply current (shutdown) is 1µA typ at active-low FORCEOFF=GND, TA=+25°C
• Output voltage swing is ±5.4V typ (all transmitter outputs loaded with 3kohm to ground)
• Receiver propagation delay is 0.15µs typ at R-IN to R-OUT, CL=150pF
• Transition-region slew rate is 6V/µs min at CL=150pF to 1000pF, VCC=3.3V, TA=+25°C
• 28 SSOP package
• Temperature range from 0°C to +70°C