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TRSF3223ECPWRG4 Datasheet(PDF) 2 Page - Texas Instruments |
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TRSF3223ECPWRG4 Datasheet(HTML) 2 Page - Texas Instruments |
2 / 26 page TRSF3223E SLLS824A – AUGUST 2007 – REVISED SEPTEMBER 2011 www.ti.com 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 and EN is high, both drivers and receivers are shut off, and the supply current is reduced to 1 mA. Disconnecting the serial port or turning off the peripheral drivers causes auto-powerdown to occur. Auto-powerdown can be disabled when FORCEON and FORCEOFF are high. With auto-powerdown enabled, the device is automatically activated 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 the receiver input voltage is between –0.3 V and 0.3 V for more than 30 μs. Refer to Figure 4 for receiver input levels. Table 1. ORDERING INFORMATION TA PACKAGE(1) (2) ORDERABLE PART NUMBER TOP-SIDE MARKING Tube of 25 TRSF3223ECDW SOIC – DW TRSF3223EC Reel of 2000 TRSF3223ECDWR Tube of 70 TRSF3223ECDB 0 °C to 70°C SSOP – DB RT23EC Reel of 2000 TRSF3223ECDBR Tube of 70 TRSF3223ECPW TSSOP – PW RT23EC Reel of 2000 TRSF3223ECPWR Tube of 25 TRSF3223EIDW SOIC – DW TRSF3223EI Reel of 2000 TRSF3223EIDWR Tube of 70 TRSF3223EIDB SSOP – DB RT23EI –40°C to 85°C Reel of 2000 TRSF3223EIDBR Tube of 70 TRSF3223EIPW TSSOP – PW RT23EI Reel of 2000 TRSF3223EIPWR QFN – RGW Reel of 3000 TRSF3223EIRGWR RT23EI (1) Package drawings, thermal data, and symbolization are available at www.ti.com/packaging. (2) 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. FUNCTION TABLES ABC Each Driver(1) INPUTS OUTPUT DRIVER STATUS VALID RIN DOUT DIN FORCEON FORCEOFF RS-232 LEVEL X X L X Z Powered off L H H X H Normal operation with auto-powerdown disabled H H H X L L L H Yes H Normal operation with auto-powerdown enabled H L H Yes L L L H No Z Powered off by auto-powerdown feature H L H No Z (1) H = high level, L = low level, X = irrelevant, Z = high impedance 2 Submit Documentation Feedback Copyright © 2007–2011, Texas Instruments Incorporated Product Folder Link(s): TRSF3223E |
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