Refer to the PDF data sheet for device specific package drawings
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/μs 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.
PART NUMBER | PACKAGE(1) | BODY SIZE (NOM) |
---|---|---|
MAX3221 | SSOP (DB) (32) | 6.20 mm × 5.30 mm |
TSSOP (PW) (32) | 5.00 mm × 4.40 mm |
Changes from Revision O (June 2015) to Revision P (July 2021)
Changes from Revision N (January 2014) to Revision O (June 2015)