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STLV3243EBJR
15KV ESD PROTECTED 2.3 TO 5.5V, 400KBPS, RS-232 TRANSCEIVER WITH AUTO-POWERDOWN
1/19January 2004 ESD PROTECTION FOR RS-232I/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-562 SPECIFICATIONS AVAILABLEIN SO-28, SSOP-28, TSSOP28
AND FLIP-CHIP28 PACKAGES
DESCRIPTIONThe STLV3243E device consistsof3 drivers,5
receivers anda dual charge-pump circuit.All
transmitter outputs and receiver inputs are
protected upto ±8KV USING IEC 1000-4-2
contact discharge and ±15KV usingthe Human
Body Model. The receiverR2is always activeto
implementa wake-up featurefor serial port. The
deviceis guaranteedto runat data ratesof
250kbps while maintaining RS-562 output levels.
The Auto-powerdown feature operates when
FORCEONislow and FORCEOFFis high. During
this operation mode,ifthe device doesnot sense valid RS-562 signal, the driver outputs are
disabled.If FORCEOFFisset low, both drivers
and receivers (expert R2B) are shut off, and
supply currentis reducedto 1μA. Disconnecting
the serial portor turningoffthe peripheral drives
causesthe auto-powerdown conditionto occur.
Auto-powerdown can be disabled when
FORCEON and FORCEOFF are high, and this
shouldbe done when drivinga serial mouse. With
Auto-powerdown enabled, the device is
automatically activated whena valid signalis
appliedto any receiver input.
Typical applications are notebooks, PDAs,
smart-phones, hand-held equipment, palmtop
computers, peripherals, battery-powered
equipment, and printers.
ORDERING CODES
STLV3243E±15KV ESD PROTECTED 2.3 TO 5.5V, 400KBPS,
RS-232 TRANSCEIVER WITH AUTO-POWERDOWN
STLV3243E2/19
PIN DESCRIPTION
STLV3243E3/19
PIN DESCRIPTION
STLV3243E4/19
PIN CONFIGURATION
INVALID TRUTH TABLE
OUTPUT CONTROL TRUTH TABLE
STLV3243E5/19
ABSOLUTE MAXIMUM RATINGSAbsoluteMaximum Ratingsare those values beyond which damagetothe devicemay occur. Functional operation under theseconditionis
not implied.
ESD PERFORMANCE: TRANSMITTER OUTPUTS, RECEIVER INPUTS
ELECTRICAL CHARACTERISTICS1-C4 =0.1μF,VCC =2.3Vto 5.5V,TA=-40to 85°C, unless otherwise specified.
Typical valuesare referredtoTA =25°C)
LOGIC INPUT ELECTRICAL CHARACTERISTICS(C1 -C4 =0.1μF, VCC =2.3Vto 5.5V,TA=-40to 85°C, unless otherwise specified.
Typical valuesare referredtoTA =25°C)
STLV3243E6/19
RECEIVER OUTPUTS ELECTRICAL CHARACTERISTICS1-C4 =0.1μF,VCC =2.3V to5.5V,TA=-40to 85°C, unless otherwise specified.
Typical valuesare referredtoTA= 25°C)
AUTO-POWERDOWN ELECTRICAL CHARACTERISTICS(C1 -C4 =0.1μF, VCC =2.3V to5.5V,TA=-40to 85°C, unless otherwise specified.
Typical valuesare referredtoTA= 25°C, FORCEON= GND, FORCEOFF =VCC)
TRANSMITTER ELECTRICAL CHARACTERISTICS1-C4 =0.1μF,VCC =2.3V to5.5V,TA=-40to 85°C, unless otherwise specified.
Typical valuesare referredtoTA= 25°C)
STLV3243E7/19
RECEIVER INPUTS ELECTRICAL CHARACTERISTICS(C1 -C4 =0.1μF, VCC =2.3Vto 5.5V,TA=-40to 85°C, unless otherwise specified.
Typical valuesare referredtoTA =25°C)
TIMING CHARACTERISTICS(C1 -C4 =0.1μF, VCC =2.3to3V,TA=-40to 85°C, unless otherwise specified.
Typical valuesare referredtoT =25°C)
STLV3243E8/19
APPLICATION CIRCUITS
REQUIRED MINIMUM CAPACITANCE VALUE (μF)
STLV3243E9/19
AUTOPOWERDOWN INPUT LEVELS
AUTOPOWERDOWN INPUT TIMING
STLV3243E10/19
Figure1: Data Rate
Figure2: Receiver shutdown and Powerup
VCC=2.3V, IO=100mA,CI =1μF(tantalum), CO=10μF(tantalum) VI=12V, IO=from 0.1Ato 7.5A,CI =10μF(tantalum), CO=10μF(tan-
talum)
