鈥?/div>
3pF Channel Capacitance
DESCRIPTION
The UCC5510 Multi-Mode Low Voltage Differential and Single Ended
Terminator is specially designed for automatic termination of Single-
Ended or Low Voltage Differential SCSI Bus. The Multi-Mode operation of
this device allows for a transition system design for the next generation
SCSI Parallel Interface (SPI-2). Compliant with SPI-2, with SPI and Fast-
20 the UCC5510 incorporates all the functions necessary to properly ter-
minate the SCSI Bus and has internal thermal shut down and short cir-
cuit limiting.
BLOCK DIAGRAM
SOURCE 5 < 15mA
SINK 200碌A(chǔ) MAXIMUM (NOISE LOAD)
TRMPWR 38
+V
DD
REF 1.3V
MSTR/SLV 19
1.3V 鹵 鈥?.1V
20 DIFFSENS
2.2 > 1.9V
DIFFB 21
0.7 > 0.6V
DEVICE MODE
SELECT LOGIC
110
REF 2.7V
125 +50mV TO +62.5mV
REF 1.25V
52
5
52
HS/GND
HS/GND
HS/GND
8
110
28
27
125
+50mV TO +62.5mV
52
32
52
31
SWITCHES UP ARE SINGLE
ENDED SWITCHES DOWN ARE
LOW VOLTAGE DIFFERENTIAL
L9+
L9鈥?/div>
4
L1+
L1鈥?/div>
HS/GND 26
HS/GND
HS/GND
GND
10
9
18
SE GND
SWITCH
1
Circuit Design Patented
REG
UDG-98033
SLUS332A - OCTOBER 1999
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