7-808

CD4029BMS

FIGURE 13. CASCADING COUNTER PACKAGES

(Continued)

Chip Dimensions and Pad Layout

RIPPLE CLOCKING MODE:

THE UP/DOWN CONTROL CAN BE CHANGED AT ANY COUNT. THE ONLY

RESTRICTION ON CHANGING THE UP/DOWN CONTROL IS THAT THE CLOCK

INPUT TO THE FIRST COUNTING STAGE MUST BE HIGH. FOR CASCADING

COUNTERS OPERATING IN A FIXED UP-COUNT OR DOWN-COUNT MODE,

THE OR GATES ARE NOT REQUIRED BETWEEN STAGES, AND CO IS CON-

NECTED DIRECTLY TO THE CL INPUT OF THE NEXT STAGE WITH CI

GROUNDED.

UP/D

B/D

PE

CL Q1 Q2 Q3 Q4

CI

CO

J1 J2 J3 J4

CD4029

UP/D

B/D

PE

CL Q1 Q2 Q3 Q4

CI

CO

J1 J2 J3 J4

CD4029

UP/D

B/D

PE

CL Q1 Q2 Q3 Q4

CI

CO

J1 J2 J3 J4

CD4029

UP/DOWN

PRESET

ENABLE

CLOCK

BINARY/

DECADE

1/4 CD4071B

1/4 CD4071B

“RIPPLE CLOCKING”

Dimensions in parentheses are in millimeters

and are derived from the basic inch dimensions

METALLIZATION:

Thickness: 11k

Å

PASSIVATION:

10.4kÅ - 15.6k

BOND PADS:

0.004 inches X 0.004 inches MIN

DIE THICKNESS:

0.0198 inches - 0.0218 inches