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UCC5642 Datasheet(PDF) 3 Page - Texas Instruments

Part # UCC5642
Description  LVD-ONLY SCSI TERMINATOR WITH REGULATOR AND SPI-3 DELAY
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

UCC5642 Datasheet(HTML) 3 Page - Texas Instruments

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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
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
Common mode impedance
L+ and L– shorted together,
See Note 2
110
140
165
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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