Switching Characteristics

at VCC = 5V and TA = 25°C

Note 8: All typicals are at VCC = 5V, TA = 25°C.

Note 9: Not more than one output should be shorted at a time, and the duration should not exceed one second.

Note 10: With all outputs open, inputs A through D grounded, and 4.5V applied to S0, S1, CLEAR, and the serial inputs, ICC is tested with momentary

ground, then 4.5V applied to CLOCK.

Timing Diagram

Typical Clear, Load, Right-Shift, Left-Shift, Inhibit, and Clear Sequences

Symbol

Parameter

From (Input)

CL = 50 pF, RL = 2 kΩ

Units

To (Output)

Min

Max

fMAX

Maximum Clock Frequency

20

MHz

tPLH

Propagation Delay Time

Clock to Any Q

26

ns

LOW-to-HIGH Level Output

tPHL

Propagation Delay Time

Clock to Any Q

35

ns

HIGH-to-LOW Level Output

tPHL

Propagation Delay Time

Clear to Any Q

38

ns

HIGH-to-LOW Output

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