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ST3243EBSTN/a2200avai15KV ESD PROTECTED, 3 TO 5.5V 400KBPS, RS-232 TRANSCEIVER WITH AUTO-POWERDOWN
ST3243EBJRSTMN/a72500avai15KV ESD PROTECTED, 3 TO 5.5V 400KBPS, RS-232 TRANSCEIVER WITH AUTO-POWERDOWN
ST3243ECSTN/a2400avai15KV ESD PROTECTED, 3 TO 5.5V 400KBPS, RS-232 TRANSCEIVER WITH AUTO-POWERDOWN


ST3243EBJR ,15KV ESD PROTECTED, 3 TO 5.5V 400KBPS, RS-232 TRANSCEIVER WITH AUTO-POWERDOWNELECTRICAL CHARACTERISTICS(C -C =0.1µ F, V =3Vto5.5V,T = -40 to 85°C, unless otherwise specified.1 ..
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ST3243EC ,15KV ESD PROTECTED, 3 TO 5.5V 400KBPS, RS-232 TRANSCEIVER WITH AUTO-POWERDOWNPIN CONFIGURATIONFLIP-CHIP 6x5SOP, SSOP, TSSOP(bottom view, bumps side)(top view)INVALID TRUTH TABL ..
ST3243ECPR ,15KV ESD PROTECTED, 3 TO 5.5V 400KBPS, RS-232 TRANSCEIVER WITH AUTO-POWERDOWNELECTRICAL CHARACTERISTICS(C -C =0.1μF, V =3Vto5.5V,T = -40 to 85°C, unless otherwise specified.1 4 ..
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ST3243EB-ST3243EBJR-ST3243EC
15KV ESD PROTECTED, 3 TO 5.5V 400KBPS, RS-232 TRANSCEIVER WITH AUTO-POWERDOWN
1/18March 2004 ESD PROTECTION FOR RS-232 I/O PINS:
±8KV IEC 1000-4-2 CONTACT DISCHARGE
±15KV HUMAN BODY MODEL 1μA SUPPLY CURRENT ACHIEVED WHEN AUTO-POWERDOWN 250Kbps MINIMUM GUARANTEED DATA
RATE GUARANTEED 6V/μsSLEW RATERANGE GUARANTEED MOUSE DRIVEABILITY 0.1μF EXTERNAL CAPACITORS MEET EIA/TIA-232 SPECIFICATIONS DOWN 3V AVAILABLEIN SO-28, SSOP-28, TSSOP28
AND FLIP-CHIP28 PACKAGES
DESCRIPTION

The ST3243E device consists of3 drivers,5
receivers anda dual charge-pump circuit. The
device meets the requirementsof 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
protectedto ±8KV USING IEC 1000-4-2 contact
discharge and ±15KV using the Human Body
Model. The receiver R2 is always active to
implementa wake-up feature for serial port.
The ST3243E hasa proprietary low-dropout
transmitter output stage enabling true RS-232
performance froma 3.0Vto 5.5V supply witha
dual charge pump. The deviceis guaranteedto
runat data ratesof 250kbps while maintaining
RS-232 output levels.
The Auto-powerdown feature functions when
FORCEONis low and FORCEOFFis high. During
this modeof operation,if the device does not
sensea valid RS-232 signal, the driver outputs are
disabled.If FORCEOFFis set low, both drivers
and receivers (expert R2B) are shut off, and
supply currentis reducedto 1μA. Disconnecting
the serial portor turning off the peripheral drives
causes the auto-powerdown conditionto occur.
Auto-powerdown can be disabled when
FORCEON and FORCEOFF are high, and should done when drivinga serial mouse. With
Auto-powerdown enabled, the deviceis activated
automatically whena valid signalis appliedto any
receiver input.
Typical application arein notebook, subnotebook,
palmtop computers, battery-powered equipment,
hand-held equipment, peripherals and printers.
ST3243E

±15KV ESD PROTECTED3 TO 5.5V, 400KBPS,
RS-232 TRANSCEIVER WITH AUTO-POWERDOWN
ST3243E
ORDERING CODES
PIN DESCRIPTION
ST3243E
3/18
PIN DESCRIPTION
ST3243E
4/18
PIN CONFIGURATION
INVALID TRUTH TABLE
OUTPUT CONTROL TRUTH TABLE
ST3243E
5/18
ABSOLUTE MAXIMUM RATINGS

AbsoluteMaximum Ratingsare those values beyond which damagetothe device may occur. Functional operation under theseconditionis
not implied.
ESD PERFORMANCE: TRANSMITTER OUTPUTS, RECEIVER INPUTS
ELECTRICAL CHARACTERISTICS

(C1 -C4 =0.1μF, VCC =3V to5.5V,TA= -40to 85°C, unless otherwise specified.
Typical values are referredtoTA =25°C)
LOGIC INPUT ELECTRICAL CHARACTERISTICS
1 -C4 =0.1μF,VCC =3V to5.5V,TA= -40to 85°C, unless otherwise specified.
Typical values are referredtoTA =25°C)
ST3243E
6/18
AUTO-POWERDOWN ELECTRICAL CHARACTERISTICS
1 -C4 =0.1μF,VCC =3V to5.5V,TA= -40to 85°C, unless otherwise specified.
Typical values are referredtoTA= 25°C, FORCEON= GND, FORCEOFF =VCC)
TRANSMITTER ELECTRICAL CHARACTERISTICS
1 -C4 =0.1μF,VCC =3V to5.5V,TA= -40to 85°C, unless otherwise specified.
Typical values are referredtoTA= 25°C)
RECEIVER ELECTRICAL CHARACTERISTICS

(C1 -C4 =0.1μF, VCC =3V to5.5V,TA= -40to 85°C, unless otherwise specified.
Typical values are referredtoTA= 25°C)
ST3243E
7/18
TIMING CHARACTERISTICS

(C1 -C4 =0.1μF, VCC =3V to5.5V,TA= -40to 85°C, unless otherwise specified.
Typical values are referredtoT =25°C)
ST3243E
8/18
APPLICATION CIRCUITS
REQUIRED MINIMUM CAPACITANCE VALUE (μF)
ST3243E
9/18
AUTOPOWERDOWN INPUT LEVELS
AUTOPOWERDOWN INPUT TIMING
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