MC14517B

http://onsemi.com

4

Figure 2. Typical Output Source Current

Characteristics Test Circuit

Figure 3. Typical Output Sink Current

Characteristics Test Circuit

EXTERNAL

POWER

SUPPLY

D

C

WE

D

C

WE

Q16 Q32 Q48 Q64

Q16 Q32 Q48 Q64

(Output being tested should be in the high−logic state)

EXTERNAL

POWER

SUPPLY

D

C

WE

D

C

WE

Q16 Q32 Q48 Q64

Q16 Q32 Q48 Q64

(Output being tested should be in the low−logic state)

Figure 4. AC Test Waveforms

50%

12216

17

18

19

33

90%

10%

16-BIT OUTPUT 1 (15)

17-BIT INPUT

32-BIT OUTPUT 6 (10)

33-BIT INPUT

48-BIT OUTPUT 2 (14)

49-BIT INPUT

64-BIT OUTPUT 5 (11)

50%

90%

10%

20 ns

90%

10%

50%

20 ns

20 ns

20 ns

DATA IN 7 (9)

WRITE 3 (13)

CLOCK 4 (12)

PIN NO'S

90%

10%

50%

EXPANDED BLOCK DIAGRAM (1/2 OF DEVICE SHOWN)

WRITE ENABLE = 0, 16-BIT OUTPUT

WRITE ENABLE = 1, 17-BIT INPUT

CLOCK

DATA

WRITE

ENABLE

32-BIT OUTPUT

33-BIT INPUT

48-BIT OUTPUT

49-BIT INPUT

64-BIT OUTPUT

HIGH IMPEDANCE

D

C

3-STATE

Q

32

D

C

WE

Q

33

D

C

3-STATE

Q

48

D

C

WE

Q

49

D

C

3-STATE

Q

64

D

C

Q

1

D

C

Q

2

D

C

3-STATE

Q

16

D

C

WE

Q

17