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ST3243EBDR Folha de dados(PDF) 1 Page - STMicroelectronics |
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ST3243EBDR Folha de dados(HTML) 1 Page - STMicroelectronics |
1 / 18 page 1/18 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 |
Nº de peça semelhante - ST3243EBDR |
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Descrição semelhante - ST3243EBDR |
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