TL2218-285_14 Datasheet, PDF (3/13 Pages) Texas Instruments – EXCALIBUR CURRENT-MODE SCSI TERMINATOR

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functional block diagram (each channel)
TL2218Ć285, TL2218Ć285Y
EXCALIBUR CURRENTĆMODE SCSI TERMINATOR
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SLVS072C − DECEMBER 1992 − REVISED OCTOBER 1995
1, 20
TERMPWR
Feedback
19
DISABLE
Vref
Active
Negation
Clamp
4
D0
Thermal
Regulation
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, T_J . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −55°C to 150°C
Storage temperature range, T_stg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −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
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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