Data Output

The data outputs, D0~D3, are tristate outputs. When the OE input is low, the D0~D3 data outputs, will be in a high im-

pedance condition.

Application Circuits

Application Circuit 1

Application Circuit 2

HT9172

Rev. 1.00

8

March 30, 2006

1 8

1 7

1 6

1 5

1 4

1 3

1 2

1 1

1 0

1

2

3

4

5

6

7

8

9

V D D

R T / G T

E S T

D V

D 3

D 2

D 1

D 0

O E

V P

V N

G S

V R E F

I N H

P W D N

X 1

X 2

V S S

0 . 1 m F

3 0 0 k W

1 0 0 k W

1 0 0 k W

0 . 1 m F

D T M F

T o o t h e r d e v i c e

V S S

X ' t a l

C 1

C 2

T o o t h e r d e v i c e

H T 9 1 7 2

0 . 1 m F

E x a m p l e : A v = 3

R 1 = 6 0 k W

R 2 = 1 0 0 k W

R 3 = 6 0 k W

R 4 = 1 5 0 k W

R 5 = 3 0 0 k W

1 8

1 7

1 6

1 5

1 4

1 3

1 2

1 1

1 0

1

2

3

4

5

6

7

8

9

V D D

R T / G T

E S T

D V

D 3

D 2

D 1

D 0

O E

V P

V N

G S

V R E F

I N H

P W D N

X 1

X 2

V S S

0 . 1 m F

3 0 0 k W

V S S

0 . 1 m F

T o o t h e r d e v i c e

D T M F

X ' t a l

C 1

C 2

0 . 1 m F

R 1

R 2

1 8 0 p F

R 3

R 4

R 5

R 3 =

R 2 R 4

R 2 + R 4

R 3 + R 5

R 1 + R 3

R 5

R 2

A v =

=

H T 9 1 7 2

T o o t h e r d e v i c e

0 . 1 m F

Note:

X

¢tal = 3.579545MHz crystal

C1=C2

@ 20pF

X

¢tal = 3.58MHz ceramic resonator

C1=C2

@ 39pF

Note:

X

¢tal = 3.579545MHz crystal

C1=C2

@ 20pF

X

¢tal = 3.58MHz ceramic resonator

C1=C2

@ 39pF