MAX3218EAP+

MAX3218EAP+ is a RS-232 transceiver with AutoShutdown. It is intended for battery-powered EIA/TIA-232E and V.28/V.24 communications interfaces that need two drivers and two receivers with minimum power consumption from a single low-voltage supply. It provides a wide +1.8V to +4.25V operating voltage range while maintaining true RS-232 and EIA/TIA-562 voltage levels. The MAX3218 runs from two alkaline, NiCd, or NiMH cells without any form of voltage regulator. A guaranteed 120kbps data rate provides compatibility with popular software for communicating with personal computers. Supply current is reduced to 1µA with the new AutoShutdown™ feature. When the MAX3218 does not sense a valid signal level on the receiver inputs, the onboard power supply and drivers shut down. Applications include battery-powered equipment, subnotebook computers, PDAs, hand-held equipment, peripherals, cellular phones.

• 1.8V to +4.25V single-supply voltage range
• Low-cost surface-mount components
• Three-state receiver outputs, flow-through pinout
• On-board DC-DC converters
• Supply current (shutdown) is 1µA typ at FORCEOFF=GND, TA=+25°C, VCC=3.0V
• Output Leakage Current is 0.05µA typ at R-OUT, 0V ≤ R-OUT ≤ VCC, FORCEON=FORCEOFF=0V
• Output voltage swing is ±6V typical, all transmitter outputs loaded with 3kohm to ground
• Transition region slew rate is 30V/µs max at TA=+25°C, VCC=3.0V, RL=3 to 7kohm, CL=50pF to 2500pF
• 20 SSOP package
• Temperature range from -40°C to +85°C