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ST3243EBDR Folha de dados(PDF) 1 Page - STMicroelectronics

Nome de Peças ST3243EBDR
Descrição Electrónicos  짹15KV ESD PROTECTED 3 TO 5.5V, 400KBPS, RS-232 TRANSCEIVER WITH AUTO-POWERDOWN
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Fabricante Electrônico  STMICROELECTRONICS [STMicroelectronics]
Página de início  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST3243EBDR Folha de dados(HTML) 1 Page - STMicroelectronics

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March 2004
s
ESD PROTECTION FOR RS-232 I/O PINS:
±8KV IEC 1000-4-2 CONTACT DISCHARGE
±15KV HUMAN BODY MODEL
s
1
µA SUPPLY CURRENT ACHIEVED WHEN
IN AUTO-POWERDOWN
s
250Kbps MINIMUM GUARANTEED DATA
RATE
s
GUARANTEED 6V/
µsSLEW RATERANGE
s
GUARANTEED MOUSE DRIVEABILITY
s
0.1
µF EXTERNAL CAPACITORS
s
MEET EIA/TIA-232 SPECIFICATIONS DOWN
TO 3V
s
AVAILABLE IN SO-28, SSOP-28, TSSOP28
AND FLIP-CHIP28 PACKAGES
DESCRIPTION
The ST3243E 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 ST3243E 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
run at data rates of 250kbps while maintaining
RS-232 output levels.
The Auto-powerdown 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, the driver outputs are
disabled. If FORCEOFF is set low, both drivers
and receivers (expert R2B) are shut off, and
supply current is reduced to 1
µA. Disconnecting
the serial port or turning off the peripheral drives
causes the auto-powerdown condition to occur.
Auto-powerdown
can
be
disabled
when
FORCEON and FORCEOFF are high, and should
be done when driving a serial mouse. With
Auto-powerdown enabled, the device is activated
automatically when a valid signal is applied to any
receiver input.
Typical application are in notebook, subnotebook,
palmtop computers, battery-powered equipment,
hand-held equipment, peripherals and printers.
ST3243E
±15KV ESD PROTECTED 3 TO 5.5V, 400KBPS,
RS-232 TRANSCEIVER WITH AUTO-POWERDOWN
SSOP
SOP
TSSOP
Flip-Chip28


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