ADM3222ARSZ-REEL

ADM3222ARSZ-REEL is a low-power, RS-232 line driver/receiver. It is a high-speed, 2-channel RS-232/V.28 interface device that operates from a single 3.3V power supply. Low power consumption and a shutdown facility make it ideal for battery-powered portable instruments. The ADM3222 parts conform to the EIA-232E and CCITT V.28 specifications and operate at data rates up to 460Kbps. Four external 0.1μF charge pump capacitors are used for the voltage doubler/inverter, permitting operation from a single 3.3V supply. It contains additional enable and shutdown circuitry. The active-low EN input can be used to three-state the receiver outputs. The active-low SD input is used to power down the charge pump and transmitter outputs, reducing the quiescent current to less than 0.5μA. The receivers remain enabled during shutdown unless disabled using active-low EN. It is used in applications such as general-purpose RS-232 data links, portable instruments, printers, palmtop computers, and PDAs.

• Meets EIA-232E specifications, 0.1μF charge pump capacitors
• Low power shutdown, ±8kV: contact discharge, ±15KV: air gap discharge
• Operating voltage is 3.3V typical at (VCC = 3.3V ±0.3V, C1 to C4 = 0.1μF)
• VCC power supply current is 1.3mA typical at (VCC = 3.3V ±0.3V, C1 to C4 = 0.1μF)
• Shutdown supply current 0.01μA typical at (VCC = 3.3V ±0.3V, C1 to C4 = 0.1μF)
• Maximum data rate is 460Kbps minimum at (VCC = 3.3 V, RL = 3Kohm to 7Kohm, CL = 50pF to 1000pF)
• Transition region slew rate is 10V/μs typical at (VCC = 3.3V ±0.3V, C1 to C4 = 0.1μF)
• Output leakage current is ±10μA maximum at (VCC = 3.3V ±0.3V, C1 to C4 = 0.1μF)
• Transmitter propagation delay is 0.3μs typical at (RL = 3Kohm, CL = 1000pF)
• Operating temperature range from -40°C to +85°C, 20-lead SSOP package

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