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REG5608 Datasheet(PDF) 5 Page - Burr-Brown (TI)

[Old version datasheet] Texas Instruments acquired Burr-Brown Corporation.
Part No. REG5608
Description  LOW CAPACITANCE 18-Line SCSI ACTIVE TERMINATOR
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Maker  BURR-BROWN [Burr-Brown (TI)]
Homepage  http://www.burr-brown.com
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REG5608 Datasheet(HTML) 5 Page - Burr-Brown (TI)

   
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5
®
REG5608
FIGURE 1. SCSI Parallel Bus Termination.
θ
JL
θ
BA
θ
JA
CIRCUIT BOARD
JUNCTION TO LEAD +
BOARD TO AMBIENT
=
JUNCTION TO AMBIENT
PACKAGE
MATERIAL
(
°C/W)
(
°C/W)
(
°C/W)
SO-28
1-Layer(1)
20
+
30
=
50
3-Layer(2)
20
+
21
=
41
Aluminum(3)
20
+
12
=
32
SSOP-28
1-Layer(1)
20
+
36
=
56
3-Layer(2)
20
+
23
=
43
Aluminum(3)
20
+
13
=
33
NOTES: (1) Single-side layout on 0.062 inch FR4, 1 oz copper. (2) Three-layer layout on 0.062 inch FR4, 1 oz copper.
(3) Aluminum 0.062 inch substrate, 0.003 insulation, one layer, 1 oz copper (Thermal Clad, Bergqueist Co.)
FIGURE 2. Circuit Board Layout.
TJ = TA + PD θJA
Thermal ground (leads 7, 8, 9, 20, 21, 22).
Connect to circuit ground or leave open-circuit.
4.7µF
Tantalum
T18
T1
TERMPWR
REG5608
Reg
Out
Disconnect
SCSI Parallel Bus
4.7µF Tantalum
4V to 5.25V
14
+
15
2
27
Low = Termination On
High = Disconnect
1
Gnd
28
+
(18 Lines)
To
Controller
Tranceivers
To other SCSI Devices
and opposite-end
termination


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