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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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ST3243ECTR-E датащи(PDF) 1 Page - STMicroelectronics |
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ST3243ECTR-E датащи(HTML) 1 Page - STMicroelectronics |
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1 / 16 page  October 2009 Doc ID 8648 Rev 12 1/16 16 ST3243EB ST3243EC ± 15 kV ESD protected 3 to 5.5 V, 400 kbps, RS-232 transceiver with auto power-down Features ■ ESD protection for RS-232 I/O pins: – ± 8 kV IEC 1000-4-2 contact discharge – ± 15 kV human body model ■ 1 µA supply current achieved when in auto power-down ■ 250 kbps minimum guaranteed data rate ■ Guaranteed 6 V/ms slew rate range ■ Guaranteed mouse drive ability ■ 0.1 µF external capacitors ■ Meet EIA/TIA-232 specifications down to 3 V ■ Available in TSSOP28 package 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 ± 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 250 kbps while maintaining RS-232 output levels. The auto power-down 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, handheld equipment, peripherals and printers. TSSOP Table 1. Device summary Order codes Temperature range Package Packaging ST3243ECTR-E 0 to 70 °C TSSOP28 (tape and reel) 2500 parts per reel ST3243EBTR - 40 to 85 °C TSSOP28 (tape and reel) 2500 parts per reel www.st.com |
Аналогичный номер детали - ST3243ECTR-E |
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Аналогичное описание - ST3243ECTR-E |
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