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TL2218-285YPW Arkusz danych(PDF) 3 Page - Texas Instruments |
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TL2218-285YPW Arkusz danych(HTML) 3 Page - Texas Instruments |
3 / 9 page TL2218-285, TL2218-285Y EXCALIBUR CURRENT-MODE SCSI TERMINATOR SLVS072C – DECEMBER 1992 – REVISED OCTOBER 1995 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 8–3 functional block diagram (each channel) Thermal Regulation Feedback Active Negation Clamp TERMPWR 1, 20 4 19 Vref DISABLE D0 Common to All Channels absolute maximum ratings over operating free-air temperature range (unless otherwise noted) (see Figures 1, 2, and 3)† Continuous termination voltage 10 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Continuous output voltage range 0 V to 5.5 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Continuous disable voltage range 0 V to 5.5 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Continuous total power dissipation See Dissipation Rating Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Operating virtual junction temperature range, TJ –55 °C to 150°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Storage temperature range, Tstg –60 °C to 150°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds 260 °C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . † Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. DISSIPATION RATING TABLE PACKAGE POWER RATING T ≤ 25°C DERATING FACTOR T = 70 °C T = 85 °C T = 125 °C PACKAGE AT POWER RATING ABOVE T = 25 °C POWER RATING POWER RATING POWER RATING TA 828 mW 6.62 mW/ °C 530 mW 430 mW 166 mW PW TC 4032 mW 32.2 mW/ °C 2583 mW 2100 mW 812 mW TL‡ 2475 mW 19.8 mW/ °C 1584 mW 1287 mW 495 mW ‡ RθJL is the thermal resistance between the junction and device lead. To determine the virtual junction temperature (TJ) relative to the device lead temperature, the following calculations should be used: TJ = PD x R θJL + TL, where PD is the internal power dissipation of the device and TL is the device lead temperature at the point of contact to the printed wiring board. R θJL is 50.5°C/W. |
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