2

LOGIC SYMBOL

Notes:

1. Logic symbols in accordance with ANSI/IEEE Std 91-1984 and IEC

Publication 617-12.

FUNCTION TABLE FOR C0 OUTPUT

FUNCTION TABLE FOR C1 OUTPUT

FUNCTION TABLE FOR RCOB OUTPUT

FUNCTION TABLE FOR C2 OUTPUT

FUNCTION TABLE FOR RCOA OUTPUT

(12)

C0

(11)

C1

(9)

C2

(10)

RCOA

(7)

RCOB

≥1

≥1

≥1

≥1

≥1

1,3

2,3

1,3,5

2,3,5

4,5

1,3,5,7

2,3,5,7

4,5,7

6,7

1,3,5,7,

4,5,7,9

6,7,9

8,9

1

2

4

6

8

(13)

CE

(4)

B0

(3)

A0

(2)

B1

(1)

A1

(15)

B2

(14)

A2

(6)

B3

(5)

A3

G9

Z8

G7

Z6

G5

Z4

G3

Z2

Z1

ACTIVE-HIGH INPUTS

(12)

C0

(11)

C1

(9)

C2

(10)

RCOA

(7)

RCOB

≥1

≥1

≥1

≥1

1,2

3

5

3,4

1,2,4

7

5,6

3,4,6

1,2,4,6

9

7,8

5,6,8

3,4,6,8

1,2,4,6,8

(13)

CE

(4)

B0

(3)

A0

(2)

B1

(1)

A1

(15)

B2

(14)

A2

(6)

B3

(5)

A3

Z9

G8

Z7

G6

Z5

G4

Z3

G2

Z1

ACTIVE-LOW INPUTS

1,4,6,8

INPUTS

OUTPUT

A0

B0

CE

C0

H

H

X

H

H

X

H

H

L

X

X

L

X

L

L

L

INPUTS

OUTPUT

A1

A0

B1

B0

CE

C1

H

X

H

X

X

H

H

H

X

H

X

H

H

H

X

X

H

H

L

X

X

X

X

L

X

L

L

X

X

L

X

X

L

L

L

L

INPUTS

OUTPUT

B3

B2

B1

B0

CE

RCOB

H

X

X

X

X

H

X

H

X

X

X

H

X

X

H

X

X

H

X

X

X

H

X

H

X

X

X

X

H

H

L

L

L

L

L

L

INPUTS

OUTPUT

A2

A1

A0

B2

B1

B0

CE

C2

H

X

X

H

X

X

X

H

H

H

X

X

H

X

X

H

H

H

H

X

X

H

X

H

H

H

H

X

X

X

H

H

L

X

X

X

X

X

X

L

X

L

X

L

X

X

X

L

X

X

L

L

L

X

X

L

X

X

X

L

L

L

L

L

INPUTS

OUTPUT

A3

A2

A1

A0

B3

B2

B1

CE

RCOA

H

X

X

X

H

X

X

X

H

H

H

X

X

X

H

X

X

H

H

H

H

X

X

X

H

X

H

H

H

H

H

X

X

X

H

H

L

X

X

X

X

X

X

X

L

X

L

X

X

L

X

X

X

L

X

X

L

X

L

L

X

X

L

X

X

X

L

L

L

L

X

L

X

X

X

X

L

L

L

L

L