MAX221ECUE+

MAX221ECUE+ is a single RS-232 transceiver with AutoShutdown. It is +5V powered, single transmit/receive RS-232 and V.28 communications interface with automatic shutdown/wake-up features and high data rate capabilities. It features an enhanced electrostatic discharge (ESD) protection. Both the transmitter output and receiver input are protected to ±15kV using the IEC 1000-4-2 AirGap discharge method, to ±8kV using the IEC 1000-4-2 contact discharge method, and to ±15kV using the human body model. AutoShutdown saves power without changes to the existing BIOS or operating system by entering low-power shutdown mode when the RS-232 cable is disconnected or when the transmitter of the connected peripheral is off. It wakes up and drives the active-low INVALID pin high when an active RS-232 cable is connected, signalling the host that a peripheral is connected to the communications port. Applications include maintenance/diagnostic ports, industrial systems, telecommunications, set-top boxes.

• Latch up free, guaranteed 250kbps data rate
• AutoShutdown saves power without changes to BIOS
• VCC supply current is 5mA typ at no load, TA=+25°C
• AutoShutdown supply current is 1µA typ at TA=+25°C
• Input voltage range from -25 to 25V
• Output voltage swing is ±9V typ at driver loaded with 3kohm to ground, TA=+25°C
• Maximum data rate is 250kbps min at RL=3kohm to 7kohm, CL=50pF to 1000pF, VCC=4.5V
• Transition-region slew rate is 6V/µs typ at TA=+25°C, VCC=5V, RL=3kohm to 7kohm, CL=500pF to 1000pF
• 16 TSSOP package
• Temperature range from 0°C to +70°C

注释

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