DS2118M Maxim Integrated Products, DS2118M Datasheet
DS2118M
Specifications of DS2118M
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DS2118M Summary of contents
Page 1
... SSOP (0.300")/Tape 0°C to +70°C and Reel DS2118M 1 36 TPWR HVD DS2118M LVD R9N 31 6 R9P 7 30 R8N 29 8 R8P GND GND GND 25 R7N R7P 23 14 R6N 22 15 R6P 21 DIFF_CAP DIFFSENSE 19 18 MSTR/SLV SSOP TOP MARK* DS2118MB DS2118MB DS2118MB DS2118MB REV: 010406 ...
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... The multimode operation enables the designer to implement LVD in current products while allowing the end-user SE-backward compatibility with legacy devices. If the device is connected in an LVD-only bus, the DS2118M will use LVD termination. If any SE devices are connected to the bus, the DS2118M will use SE termination. This is accomplished automatically inside the part by sensing the voltage on the SCSI bus DIFFSENS line ...
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... SCSI bus, V (SE/LVD/HVD) remain active. The DIFFSENSE driver is shut down during either of these two events. An internal pulldown resistor assures that the DS2118M will be terminating the bus if the ISO pin is left floating. To ensure proper operation, the TPWR pin should be connected to the SCSI bus TERMPWR line. As with all analog circuitry, the TERMPWR and V and a 0.01µ ...
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... A typical SCSI bus configuration is shown in REF Figure 2. NOTES: 1) DIFFSENS. Refers to the SCSI bus signal. 2) DIFFSENSE. Refers to the DS2118M pin name and internal circuitry capable of driving the DIFFSENS line. 3) DIFF_CAP. Refers to the DS2118M pin name and internal circuitry relating to monitoring the DIFFSENS line ...
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... Figure 1. DS2118M Block Diagram ...
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Figure 2. SCSI Bus Configuration ...
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... Signal Termination. Connect to SCSI bus signal lines. Heat Sink Ground. Internally connected to the mounting pad. Should be grounded. Isolation. When pulled high, the DS2118M isolates its bus pins (RxP, FxP) from the SCSI bus. Ground. Signal ground; 0V. Master/Slave. Mode-select for the noncontrolling terminator. When pulled high (MSTR), the DIFFSENSE driver is enabled. DIFFSENSE Capacitor. Connect 0.1µ ...
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SINGLE-ENDED CHARACTERISTICS PARAMETER SE Termination Resistance SE Voltage Reference SE Output Current Output Capacitance LOW-VOLTAGE DIFFERENTIAL CHARACTERISTICS PARAMETER Differential Mode Termination Resistance Common Mode Termination Resistance Differential Mode Bias Common Mode Bias DC CHARACTERISTICS PARAMETER Termpower Current Input Leakage High ...
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REGULATOR CHARACTERISTICS PARAMETER Line Regulation Load Regulation Current Limit Sink Current NOTES 3V. LINE 0.2V. LINE 3) Guaranteed by design. 4) All lines open 2.4V. OUT ...
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... No circuit patent licenses are implied. Maxim/Dallas Semiconductor reserves the right to change the circuitry and specifications without notice at any time The Maxim logo is a registered trademark of Maxim Integrated Products, Inc. The Dallas logo is a registered trademark of Dallas Semiconductor Corporation © 2006 Maxim Integrated Products • Printed USA DS2118M ...