ST3241E Datasheet, PDF (1/13 Pages) STMicroelectronics – ®5KV ESD PROTECTED 3 TO 5.5V, 400KBPS, RS-232 TRANSCEIVER WITH AUTO-POWERDOWN

ST3241E
±15KV ESD PROTECTED 3 TO 5.5V, 400KBPS,
RS-232 TRANSCEIVER WITH AUTO-POWERDOWN
s ESD PROTECTION FOR RS-232 I/O PINS:
±8KV IEC 1000-4-2 CONTACT DISCHARGE
±15KV HUMAN BODY MODEL
s 1µA SUPPLY CURRENT ACHIEVED WHEN
IN AUTO-POWERDOWN
s 250Kbps MINIMUM GUARANTEED DATA
RATE
s GUARANTEED 6V/µs SLEW RATE RANGE
s GUARANTEED MOUSE DRIVEABILITY
s 0.1µF EXTERNAL CAPACITORS
s MEET EIA/TIA-232 SPECIFICATIONS DOWN
TO 3V
s AVAILABLE IN SO-28, SSOP28 AND
TSSOP28 PACKAGES
DESCRIPTION
The ST3241E device consists of 3 drivers, 5
receivers and a dual charge-pump circuit. The
device meets the requirements of EIA/TIA and
V.28/V.24 communication standards providing
high data rate capability and enhanced
electrostatic discharge (ESD) protection. All
transmitter outputs and receiver input are
protected to ±8KV USING IEC 1000-4-2 contact
discharge and ±15KV using the Human Body
Model. The receiver R2 is always active to
implement a wake-up feature for serial port.
The ST3241E has a proprietary low-dropout
transmitter output stage enabling true RS-232
performance from a 3.0V to 5.5V supply with a
dual charge pump. The device is guaranteed to
SOP
SSOP
TSSOP
run at data rates of 250kbps while maintaining
RS-232 output levels.
It is a complete serial port (3 drivers, 5 receivers)
intended for notebook or subnotebook computers.
Receivers R1 and R2 have extra outputs in
addition to their standard outputs. These extra
output are always active.
Typical application are in notebook, subnotebook,
palmtop computers, battery-powered equipment,
hand-held equipment, peripherals and printers.
March 2004
1/13