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UCC5642 Datasheet(PDF) 3 Page - Texas Instruments |
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UCC5642 Datasheet(HTML) 3 Page - Texas Instruments |
3 / 12 page UCC5642 LVDONLY SCSI TERMINATOR WITH REGULATOR AND SPI3 DELAY SLUS477 – FEBRUARY 2000 – REVISED DECEMBER 2000 3 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 electrical characteristics, these specifications apply for TA = TJ = 0°C to 70°C, TRMPWR = 2.7 V to 5.25 V, VCC = 4.75 V to 5.25 V,(unless otherwise stated) TRMPWR supply current section PARAMETER TEST CONDITIONS MIN TYP MAX UNITS TRMPWR supply current LVD SCSI mode 25 40 mA TRMPWR supply current DISCNCT mode 0.5 1 mA VCC supply current 5 10 mA regulator section PARAMETER TEST CONDITIONS MIN TYP MAX UNITS 1.25 V regulator output voltage 0.5 ≤ VCM ≤ 2, See Note 1 1.15 1.25 1.35 V 1.25 V regulator source current VREG = 0 V –100 –80 mA 1.25 V regulator sink current VREG = 3.0 V 80 100 mA 2.85 V regulator output voltage 2.79 2.85 2.91 V 2.85 V regulator source current –800 –600 –400 mA 2.85 V regulator sink current 3 5 8 mA Share output gain 4.8 6.2 7.2 V/A Share input gain 0.130 0.160 0.192 A/V VOUTM input resistance 4 7.6 12 k Ω diff sense driver (DIFFSENS) section PARAMETER TEST CONDITIONS MIN TYP MAX UNITS 1.3 V DIFFSENS output voltage 0.5 mA ≤ IDIFSENS ≤ 50 µA 1.2 1.3 1.4 V 1.3 V DIFFSENS source current VDIFFSENS = 0 V –15 –5 mA 1.3 V DIFFSENS sink current VDIFFSENS = 2.75 V 50 200 µA differential termination section PARAMETER TEST CONDITIONS MIN TYP MAX UNITS Differential impedance 100 105 110 Ω Common mode impedance L+ and L– shorted together, See Note 2 110 140 165 Ω Differential bias voltage 100 125 mV Common mode bias L+ and L– shorted together 1.15 1.25 1.35 V NOTES: 1. VCM is applied to all L+ and L– lines simultaneously. 2. Z CM + (2.0 V * 0.5 V) I I VCM(max)* I VCM(min) @ VCM(max) = 2.0, VCM(min) = 0.5 V. 3. Ensured by design. Not production tested. |
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