Omega Vehicle Security OM5-C manual Schematic, OM5-BP-8-MUX-C, 74LS139, 74HCT138

46

P1

VREAD

1

VOUT

J2

J4

ACOM

2

PCOM

VWRITE

3

VIN

J3

J1

SNS LO

4

R1

ACOM

5

ACOM

6

Signal Ground

and Grounding Bolt

1/2

U1

RD EN\

19

74LS139

P2

Jumper Selectable

R5

12

1

1

7

High/Low Channel

G

Y3

2

R4

11

6

Y2

3

+5V

Address

U2

R3

10

3

5

B

Y1

4

Low High

74HCT138

R2

9

2

4

A

Y0

5

J6

6

G1

Y7

7

RD8

R1

8

4

9

RD7

R0

7

J5

G2A

Y6

5

10

RD6

G2B

Y5

11

RD5

Y4

12

RD4

Y3

3

13

RD3

1/2

C

Y2

2

14

RD2

U1

B

Y1

1

15

RD1

WR EN\

20

74LS139

A

Y0

P3

WR EN\ 23
NC 21
	19
+5	17
OP1
I/O COM
–In	5
–EXC	3
–SEN	1

22	RD EN\
20
	VOUT
18
	VIN
16
PCOM
6	+In
4	+EXC
2	+SEN

WR EN\ 23
NC 21
	19
+5	17
OP8
I/O COM
–In	5
–EXC	3
–SEN	1

22	RD EN\
20
	VOUT
18
	VIN
16
PCOM
6	+In
4	+EXC
2	+SEN

W5

18

15

9

6

G

Y3

7

Jumper Selectable

W4

17

10

Y2

8

High/Low Channel

W3

16

13

11

B

Y1

9

+5V Address

U3

W2

15

14

12

A

Y0

10

W1

14

Low High

74HCT138

W0

13

J8

6

G1

Y7

7

WR8

4

9

WR7

J7

G2A

Y6

Data

22 Data

5

10

WR6

FIGURE

G2B

Y5

11

WR5

23

NC

Y4

24

12

WR4

NC

Y3

DCOM

25

3

13

WR3

C

Y2

16.

DCOM

26

2 B

Y1

14

WR2

OM5-BP-8-MUX-C

1

A

Y0

15

WR1

Fuse

F1

+5

+5

4 Amps

DZ1

+

C1

5.6V

TB9

LED

Schematic.

PCOM

PCOM

OMX-CJC-C	OMX-CJC-C
OMX-1362-C	OMX-1362-C

TB1		1 2 3 4	TB8		1 2 3 4
	–EXC –In+In +EXC			–EXC –In+In +EXC
		Channel 1			Channel 8

NOTES:

1.J1, J2, J4 and R1 are factory installed.

2.OMX-CJC-C are CJC temperature sensors.

3.Resistors OMX-1362-C are optional I/V conversion resistors for current inputs, not factory installed.