SCAN RESET

ENABLE

SCAN

CASCADE ENABLE A

CASCADE ENABLE B

CASCADE ENABLE C

DATA BYTE ON BUS

PACKAGE

A

1

2

3

4

5

1

2

3

4

5

B

1

2

3

4

5

C

FIGURE 6. TIMING DIAGRAM FOR THE 3 DRIVER CASCADE

(END OF SCAN)

PR

D

C

Q

Q

S

R

TO

COUNT INPUT

INHIBIT

COUNT

PULSES

(Same as input to Alt Count)

COUNT

PULSES

(Same as input to Alt Count)

INHIBIT

TO COUNT

INPUT

FIGURE 7. SYNCHRONIZING INHIBIT WITH COUNT PULSES FOR LS7060

METHOD 2

METHOD 1

INHIBIT

COUNT PULSES

(Same as input to

ALT COUNT A)

COUNT PULSES

INHIBIT

Q

C*

(*Reference LS7062 Block

Diagram, Figure 9B)

NOTE: Count A may only change during positive portion of Count Pulses (Alt Count A)

when Count A is used as an inhibit.

FIGURE 8. SYNCHRONIZING INHIBIT WITH COUNT PULSES FOR COUNTER A FOR LS7062

TO COUNT A

D

C

Q

7060/62-071398-5