CDC318

1-LINE TO 18-LINE CLOCK DRIVER

SCAS587B – JANUARY 1997 – REVISED MARCH 1998

2

POST OFFICE BOX 655303

FUNCTION TABLE

INPUTS

OUTPUTS

OE

A

1Y0–1Y3

2Y0–2Y3

3Y0–3Y3

4Y0–4Y3

5Y0–5Y1

L

X

Hi-Z

Hi-Z

Hi-Z

Hi-Z

Hi-Z

H

L

L

L

L

L

L

H

H

H†

H†

H†

H†

H†

† The function table assumes that all outputs are enabled via the appropriate I2C configuration register bit. If the output is disabled

via the appropriate configuration bit, then the output is driven to a low state, regardless of the state of the A input.

logic diagram (positive logic)

1Y0–1Y3

2Y0–2Y3

3Y0–3Y3

4Y0–4Y3

5Y0–5Y1

OE

SDATA

SCLOCK

A

I2C

Register

Space

I2C

38

24

25

11

4, 5, 8, 9

13, 14, 17, 18

31, 32, 35, 36

40, 41, 44, 45

21, 28

18

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