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ST3243ECTR-E

Active

?15kV ESD protected 3 to 5.5V, 400kbps, RS-232 transceiver with auto power-down

Quantity $ per Unit Savings
1 - 9$4.320%
10 - 24$3.8810%
25 - 99$3.6815%
100 - 249$3.1826%
250 - 499$3.0230%
500$2.7237%
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Out of stock
$4.32
Parameter NameParameter Value
Supply Voltage Min Volt3.0
Supply Voltage Max Volt5.5
Operating Temp Min Celsius0.0
Operating Temp Max Celsius70.0
ECCN USEAR99
ECCN EUNEC
Packing TypeTape And Reel
ROHS Compliance GradeEcopack3
GradeIndustrial
Package NameTSSOP-28

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 ±8 kV USING IEC 1000-4-2 contact discharge and ±15 kV 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 3.0 V to 5.5 V 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 power-down condition to occur.


Auto power-down can be disabled when FORCEON and FORCEOFF are high, and should be done when driving a serial mouse. With auto power-down 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.

Key features
  • Meet EIA/TIA-232 specifications down to 3 V
  • 0.1 µF external capacitors
  • ESD protection for RS-232 I/O pins: ±8 kV IEC 1000-4-2 contact discharge ±15 kV human body model
  • 250 Kbps minimum guaranteed data rate
  • 1 µA supply current achieved when in auto power-down
  • Guaranteed mouse drive ability
  • Available in SO-28, SSOP-28, TSSOP28 and flip-chip28 packages
  • Guaranteed 6 V/ms slew rate range