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UCC5630FQPTR Datasheet(PDF) 3 Page - Texas Instruments |
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UCC5630FQPTR Datasheet(HTML) 3 Page - Texas Instruments |
3 / 5 page 3 UCC5630 ELECTRICAL CHARACTERISTICS: Unless otherwise specified, TA = 0°C to 70°C, TRMPWR = 3.3V. PARAMETER TEST CONDITIONS MIN TYP MAX UNITS 2.7V Regulator Single Ended Mode 2.5 2.7 3 V 2.7V Regulator Source Current Single Ended Mode –200 –400 –800 mA 2.7V Regulator Sink Current Single Ended Mode 100 200 400 mA 2.7V Regulator Dropout Voltage VTRMPWR – (VREG – 2.7 Min) 200 mV Differential Termination Section Differential Impedance 100 105 110 Ω Common Mode Impedance 110 125 165 Ω Differential Bias Voltage Drivers Tri-stated 100 125 mV Common Mode Bias 1.25 V Output Capacitance Single Ended Measurement to Ground (Note 1) 3.5 pF Single Ended Termination Section Impedance 102.3 110 117.7 Ω Termination Current Signal Level 0.2V –21 –23 –25.4 mA Signal Level 0.5V –22.4 mA Output Leakage Disabled, TRMPWR = 0V to 5.25V 400 nA Output Capacitance Single Ended Measurement to Ground (Note 1) 3 pF Single Ended GND SW Impedance 60 Ω Disconnect (DISCNCT) Input Section DISCNCT Threshold 0.8 2.0 V DISCNCT Input Current VDISCNCT = 0V and 3.3V –30 30 µA Differential Sense (DIFFB) Input Sections DIFFB Single Ended Threshold 0.6 0.7 V DIFFB Sense LVDS Threshold 1.9 2.2 V DIFFB Input Current VDIFFB = 0V and 3.3V –30 30 µA Master/Slave (MSTR/SLV) Input Section MSTR/SLV Threshold 0.8 2 V MSTR/SLV Input Current –30 30 µA Status Bits (SE, LVD, HIPD) Output Section ISOURCE VLOAD = 2.4V –4 –8.7 mA ISINK VLOAD = 0.5V 3 6 mA VLOAD = 0.4V 2 5 mA Note 1: Guaranteed by design. Not 100% tested in production. PIN DESCRIPTIONS DIFFB: DIFSENS filter pin should be connected to a 0.1 µF capacitor to GND and 20k resistor to SCSI/Bus DIFSENS Line. DIFSENS: The SCSI bus DIFSENS line is driven to 1.3V to detect what type of devices are connected to the SCSI bus. DISCNCT: Disconnect shuts down the terminator when it is not at the ended of the bus. The disconnect pin low en- ables the terminator. HIPD: TTL compatible status bit indicating high voltage differential has been detected on DIFFB. The terminator is in shutdown. (Not valid in disconnect mode.) HS/GND: Heat Sink GND. Connect to large area PC board traces to increase power dissipation capability. GND: Power Supply Return. L1– thru L9–: Signal line/active line for single ended or negative line in differential applications for the SCSI bus. L1+ thru L9+: Ground line for single ended or positive line for differential applications for the SCSI bus. LVD: TTL compatible status bit indicating low voltage dif- ferential level on DIFFB. The terminator is in LVD mode.(Not valid in disconnect mode.) |
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