Figure 5-1. Typical Clear, Shift, Load, Inhibit, and Shift Sequence

5.6 Switching Characteristics

over recommended operating free-air temperature range, CL = 50 pF (unless otherwise noted) (see Figure 6)

PARAMETER

FROM

(INPUT)

TO

(OUTPUT)

VCC (V)

TA = 25°C

SN54HC166

SN74HC166

UNIT

MIN

TYP

MAX

MIN

MAX

MIN

MAX

fmax

2

6

11

4.2

5

MHz

4.5

31

36

21

25

6

36

45

25

29

tPHL

CLR

QH

2

62

120

180

150

ns

4.5

18

24

36

30

6

13

20

31

26

tpd

CLK

QH

2

75

150

225

190

ns

4.5

15

30

45

38

6

13

26

38

32

tt

Any

2

38

75

110

95

ns

4.5

8

15

22

19

6

6

13

19

16

5.7 Operating Characteristics

TA = 25℃

PARAMETER

TEST CONDITIONS

TYP

UNIT

Cpd

Power dissipation capacitance

No load

50

pF

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SN54HC166, SN74HC166

SCLS117E – DECEMBER 1982 – REVISED FEBRUARY 2022

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