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PACSZ1284
ELECTRICAL SCHEMATIC
PACSZ1284 ? 02
R1 = 2.2 k W
R2 = 33 W
C = 150 pF
PACSZ1284 ? 04
R1 = 4.7 k W
R2 = 33 W
C = 150 pF
28
27
26
25
24
23
22 21
20
19
18
17
16
15
R1
R1
R1
R1
R1
R1
R1
R1
R1
R1
R1
R1
R1
R1
R1
R1
R1
R2
R2
R2
R2
R2
R2
R2
R2
R2
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
1
2
3
4
5
6
7
8
9
10
11
12
13
14
PACKAGE / PINOUT DIAGRAMS
CAP ? FILTERED
CAP ? FILTERED
SUPERCHIP SIDE SERIES ? TERMINATED
SUPERCHIP SIDE SERIES ? TERMINATED
SUPERCHIP SIDE SERIES ? TERMINATED
SUPERCHIP SIDE SERIES ? TERMINATED
SUPERCHIP SIDE SERIES ? TERMINATED
CAP ? FILTERED
SUPERCHIP SIDE SERIES ? TERMINATED
CAP ? FILTERED
SUPERCHIP SIDE SERIES ? TERMINATED
CAP ? FILTERED
SUPERCHIP SIDE SERIES ? TERMINATED
SUPERCHIP SIDE SERIES ? TERMINATED
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
CAP ? FILTERED
CAP ? FILTERED
CONNECTOR SIDE SERIES ? TERMINATED
CONNECTOR SIDE SERIES ? TERMINATED
CONNECTOR SIDE SERIES ? TERMINATED
CONNECTOR SIDE SERIES ? TERMINATED
GND
CONNECTOR SIDE SERIES ? TERMINATED
V CC
CONNECTOR SIDE SERIES ? TERMINATED
CONNECTOR SIDE SERIES ? TERMINATED
CONNECTOR SIDE SERIES ? TERMINATED
CONNECTOR SIDE SERIES ? TERMINATED
CAP ? FILTERED
28 ? Pin QSOP
Table 1. PIN DESCRIPTIONS
Leads
1, 2, 8, 10, 12, 15, 27, 28
3 ? 7, 9, 11, 13, 14
16 ? 19, 21, 23 ? 26
20
22
Name
Capacitor ? Filtered
Super I/O Chip Side Series ? Terminated
Parallel Port
Connector Side Series ? Terminated
V CC
GND
Description
IEEE 1284 Signals which Require No Series Termination
IEEE 1284 Signals on the Super I/O Chip Side which Require
Series Termination
IEEE 1284 Signals on the Parallel Port Connector Side which
Require Series Termination
Supply Rail for the Device
Ground Reference for the Device
http://onsemi.com
2
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