Symbol

Parameter

Conditions

Min

Typ

Max

Units

Propagation Delay Time to a Logical

200

400

ns

‘‘0’’ or Logical ‘‘1’’ from Clock to Q or Q

80

160

ns

Time Prior to Clock Pulse that Data

60

30

ns

must be Preset

25

10

ns

Time After Clock Pulse that Data

25

10

ns

must be Held

10

50

ns

100

ns

50

ns

Time Prior to Clock Pulse that Mode

200

100

ns

Control must be Preset

100

50

ns

Maximum Input Clock Frequency

3

5

MHz

65

10

MHz

Input Capacitance

Any Input (Note 2)

5

pF

Power Dissipation Capacitance

(Note 3)

100

pF

AC Parameters are guaranteed by DC correlated testing

Note 1

‘‘Absolute Maximum Ratings’’ are those values beyond which the safety of the device cannot be guaranteed Except for ‘‘Operating Temperature Range’’

they are not meant to imply that the devices should be operated at these limits The table of ‘‘Electrical Characteristics’’ provides conditions for actual device

operation

Note 2

Capacitance is guaranteed by periodic testing

Note 3

AN-90

Function Table

Inputs

Outputs

Mode

Clocks

Serial

Parallel

Control

2 (L)

1 (R)

A

B

C

D

HH

X

X

X

X

X

X

H

v

XX

a

b

c

c

a

b

c

d

H

v

XX

d

LL

H

X

X

X

X

X

LX

v

HX

X

X

X

H

LX

v

LX

X

X

X

L

u

LL

X

X

X

X

X

v

LL

X

X

X

X

X

v

LH

X

X

X

X

X

u

HL

X

X

X

X

X

u

HH

X

X

X

X

X

u

L

H

X

X

X

X

X

Undefined

v

H

L

X

X

X

X

X

Operating Conditions

were established

3