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TRS3243ECRHBR Datasheet(PDF) 2 Page - Texas Instruments |
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TRS3243ECRHBR Datasheet(HTML) 2 Page - Texas Instruments |
2 / 27 page www.ti.com DESCRIPTION/ORDERING INFORMATION (CONTINUED) TRS3243E 3-V TO 5.5-V MULTICHANNEL RS-232 LINE DRIVER/RECEIVER WITH ±15-kV IEC ESD PROTECTION SLLS789 – APRIL 2007 Flexible control options for power management are available when the serial port is inactive. 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 (except ROUT2B) are shut off, and the supply current is reduced to 1 µA. Disconnecting the serial port or turning off the peripheral drivers 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. The INVALID output is used to notify the user if an RS-232 signal is present at any receiver input. INVALID is high (valid data) if any receiver input voltage is greater than 2.7 V or less than –2.7 V or has been between –0.3 V and 0.3 V for less than 30 µs. INVALID is low (invalid data) if all receiver input voltages are between –0.3 V and 0.3 V for more than 30 µs. Refer to Figure 5 for receiver input levels. The TRS3243EC is characterized for operation from 0 °C to 70°C. The TRS3243EI is characterized for operation from –40 °C to 85°C. ORDERING INFORMATION TA PACKAGE(1) ORDERABLE PART NUMBER TOP-SIDE MARKING SSOP – DB Reel of 2000 TRS3243ECDBR TRS3243EC SOP – DW Reel of 2000 TRS3243ECDWR TRS3243EC 0 °C to 70°C TSSOP – PW Reel of 2000 TRS3243ECPWR RS43EC QFN – RHB Reel of 2000 TRS3243ECRHBR RS43EC SSOP – DB Reel of 2000 TRS3243EIDBR TRS3243ECI SOP – DW Reel of 2000 TRS3243EIDWR TRS3243ECI –40 °C to 85°C TSSOP – PW Reel of 2000 TRS3243EIPWR RS43EI QFN – RHB Reel of 2000 TRS3243EIRHBR RS43EI (1) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI website at www.ti.com. 2 Submit Documentation Feedback |
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