MAX221ECAE+T

MAX221ECAE+T is a single RS-232 transceiver with auto shutdown. This +5V powered, single transmit/ receive RS-232 and V.28 communications interface with automatic shutdown/wake-up features and high data rate capabilities. It achieves a low 1µA supply current with the revolutionary AutoShutdown™ feature. 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. The MAX221E wakes up and drives the INVALID pin high when an active RS-232 cable is connected, signalling the host that a peripheral is connected to the communications port. It is used in applications such as maintenance/diagnostic ports, industrial systems, telecommunications, and set-top boxes.

• Single RS-232 transceiver, ESD protection for RS-232 I/O pins
• Auto shutdown saves power without changes to BIOS
• Latch up free, guaranteed 250Kbps data rate
• VCC supply current is 5mA typical at (no load, TA = +25°C)
• Shutdown supply current is 1µA typical at (VCC = +5V ±10%, C1–C4 = 0.1µF)
• Receiver propagation delay is 0.15ms typical at (CL = 150pF, VCC = +5V ±10%, C1–C4 = 0.1µF)
• Transition-region slew rate is 6V/µs typical at (VCC = +5V ±10%, C1–C4 = 0.1µF)
• Transmitter skew is 3200ns typical at (VCC = +5V ±10%, C1–C4 = 0.1µF)
• Operating temperature range from 0°C to +70°C
• 16-pin SSOP package

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