Clear-Com ICS-2003 - Page 52

ICS-2003 INTERCOM STATION
3-18
Figure 17: COM-10 Communications Module Schematic Rev. A
A A
B B
C C
D D
E E
4 4 3 3 2 2 1 1
Schematic
COM-10 Isolated COM Module
710429 - SCH - B - AB
11
710429SA.DSN
Clark McCoy
04/08/98
-----------------------
A 2442 Release To Production
CHK DWN APP
DATE DATE DATE
ORCAD P/N SHEET:
OF:
SCALE SIZE DWG No. REV
TITLE:
CLEAR-COM
INTERCOM SYSTEMS
R
REV ECO# DESCRIPTION DATE BY CHK
J1
IC1 MAX1490B
+ -
- +
OPTO BARRIER
J2 RJ-45
J3 DB-15M
C1 22uF
+
C2 .1uF
R33.3K
R4 330
IC2D 74HC00
IC2B 74HC00
IC2A 74HC00
IC2C 74HC00
R7 330
R2 200
R1 3.3K
T1 560018 T2 MET-09
R5 150 R6 4.7K
C3
.0022uF
VCC
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
VCC1
1
VCC2
2
VCC3
8
VCC4
10
GND1
5
GND2
12
D1
3
D2
4
FS
6
SD
7
DIN
9
ROUT
11
AC1
24
AC2
23
A
20
B
19
Z
18
Y
17
ISOVCC1
22
ISOVCC2
14
ISODIDRV
15
ISORODRV
21
ISOROLED
13
ISOCOM1
16
1
2
3
4
5
6
7
8
8
15
7
14
6
13
5
12
4
11
3
10
2
9
1
12
13
11
4
5
6
1
2
3
9
10
8
1
6
5
3
4
2
1
6
5
3
4
2
+5V +5V /IRQ +5V
D3 D2 D0 D1 D7 D4 D6 D5
/WEL
/CE
/OE /AS
A3
/RES
A2 A1
422 REC
A4
422 XMIT
A5
AGND
DGND
AGND
DGND
AGND
+12A
TALK AUDIO
-12A
LIST AUDIO
AGND
RS-422 XMIT+ RS-422 XMIT- TALK AUDIO + TALK AUDIO - LIST. AUDIO + LIST. AUDIO - RS-422 REC+ RS-422 REC-
RS-422 XMIT+ RS-422 XMIT- TALK AUDIO + TALK AUDIO -
LIST. AUDIO + LIST. AUDIO -
RS-422 REC+ RS-422 REC- CHASSIS GND CHASSIS GND