鈥?/div>
3pF Channel Capacitance
DESCRIPTION
The UCC5672 Multi-Mode Low Voltage Differential and Single Ended Ter-
minator is both a single ended terminator and a low voltage differential ter-
minator for the transition to the next generation SCSI Parallel Interface
(SPI-3). The low voltage differential is a requirement for the higher speeds
at a reasonable cost and is the only way to have adequate skew budgets.
The automatic mode select/change feature switches the terminator be-
tween Single Ended or LVD SCSI Termination, depending on the bus
mode. If the bus is in High Voltage Differential Mode, the terminator lines
transition into a High Impedance state.
The UCC5672 is SPI-3, SPI-2, and SCSI-2 compliant. This device is of-
fered in a 28 pin TSSOP package to minimize the footprint. The UCC5672
is also available in a 36 pin MWP package.
BLOCK DIAGRAM
2.1V
DIFFB
17
0.6V
FILTER/
DELAY
HPD
LVD
SE
DIFSENS
REF 1.3V
ENABLE
SOURCE/SINK
REGULATORS
SE REF
2.7V
10碌A(chǔ)
DISCNCT
13
LVD REF
1.25V
ENABLE
SE GROUND
SWITCH
110
HS/GND
HS/GND
GND
6
22
14
MODE
SE
LVD
HPD
DISCNCT
SW1
UP
DOWN
DOWN
OPEN
OTHER
SWITCHES
UP
DOWN
OPEN
OPEN
124
56mV
鈥?/div>
+
56mV
+
鈥?/div>
52
SW1
110
56mV
鈥?/div>
+
56mV
+
鈥?/div>
52
16
DIFSENS
TRMPWR
TRMPWR
28
27
124
3
52
2
L1鈥?/div>
L1+
26
52
25
L9鈥?/div>
L9+
SE GROUND
SWITCH
1
Note: Indicated pinout is for 28 pin TSSOP package.
REG
UDG-99125
SLUS414A - FEBRUARY 2000
UCC5672PWPTR相關(guān)型號(hào)PDF文件下載
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型號(hào)
版本
描述
廠商
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