ds2127 Maxim Integrated Products, Inc., ds2127 Datasheet
ds2127
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ds2127 Summary of contents
Page 1
... DS2127 uses SE termination. If any high-voltage differ- ential (HVD) devices are connected to the bus, the DS2127 isolates itself from the SCSI bus. The mode change has a built-in delay that is determined by an integrated SPI-3 mode change filter/delay. The termi- nating resistors can also be disconnected from the bus by asserting the ISO pin ...
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Ultra3 LVD/SE SCSI 14-Line Terminator ABSOLUTE MAXIMUM RATINGS Voltage Range on All Pins Relative to Ground ......-0.3V to +6.0V V Continuous Output Current....................................±200mA REF Operating Temperature Range...............................0°C to +70°C Junction Temperature ......................................................+150°C Stresses beyond those listed under “Absolute Maximum Ratings” ...
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Ultra3 LVD/SE SCSI 14-Line Terminator ELECTRICAL CHARACTERISTICS (continued) (TPWR = TPWR(MIN) TPWR(MAX) A PARAMETER SYMBOL V REGULATOR REF 1.25V Regulator Line Regulation 2.85V Regulator 2.85V Regulator Short-Circuit Source Current 2.85V Regulator Short-Circuit Sink Current 2.85V ...
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... LVD LVD DELAY/ FILTER SE HVD SE LVD SE HVD THERMAL 1.30V SHUTDOWN 10µA 110Ω CONTROL LOGIC DS2127 124Ω 2.15V REFGEN AND 1.30V BANDGAP TRIM 0.6V 110Ω 2.85V 1.25V (SE) (LVD) 124Ω ALL SWITCHES UP ALL SWITCHES CENTER ALL SWITCHES DOWN ...
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... DIFFSENS GND V REF 4.7µF Typically, four DS2127s are used in a SCSI bus seg- ment. On two chips, the DIFF_CAP inputs at each end of the bus should be connected together. There should be a 50Hz noise filter implemented on DIFF_CAP at each end of the bus, as close as possible to the DIFF_CAP pins. This filter consists of a 20kΩ ...
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... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 6 _____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2006 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products, Inc. Package Information ...