See datasheet for actual packaging/pinout drawings

Packaging

Package | PIN:

DB | 16

Temp:

C (0 to 70)

ECO Plan:

Green (RoHS & no Sb/Br)

MAX3221CDB


3-V to 5.5-V Single-Channel RS-232 Line Driver/Receiver

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1000 - 9999 $ 0.87

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Texas Instruments MAX3221CDB

The MAX3221 device consists of one line driver, one line receiver with dedicated enable pin, and a dual charge-pump circuit with ±15-kV ESD protection pin to pin (serial-port connection pins, including GND). The device meets the requirements of TIA/EIA-232-F and provides the electrical interface between an asynchronous communication controller and the serial-port connector. The charge pump and four small external capacitors allow operation from a single 3-V to 5.5-V supply. These devices operate at data signaling rates up to 250 kbps and a maximum of 30-V/±s driver output slew rate.

Flexible control options for power management are available when the serial port is inactive. The automatic power-down feature functions when FORCEON is low and FORCEOFF is high. During this mode of operation, if the device does not sense a valid RS-232 signal on the receiver input, the driver output is disabled and the supply current is reduced to 1 µA. The INVALID output notifies the user if an RS-232 signal is present at the receiver input.

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