74HC14 datasheet(4/8 Pages) PHILIPS

tên linh kiện	74HC14

Giải thích chi tiết về linh kiện	Hex inverting Schmitt trigger

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4 / 8 page

September 1993

4

Philips Semiconductors

Product speciﬁcation

Hex inverting Schmitt trigger

74HC/HCT14

DC CHARACTERISTICS FOR 74HC

For the DC characteristics see

“74HC/HCT/HCU/HCMOS Logic Family Specifications”. Transfer characteristics are

given below.

Output capability: standard

ICC category: SSI

Transfer characteristics for 74HC

Voltages are referenced to GND (ground = 0 V)

AC CHARACTERISTICS FOR 74HC

GND = 0 V; tf = tf = 6 ns; CL = 50 pF

SYMBOL

PARAMETER

Tamb (°C)

UNIT

TEST CONDITIONS

74HC

VCC

(V)

WAVEFORMS

+25

−40 to +85

−40 to +125

min.

typ.

max.

min.

max.

min.

max.

VT+

positive-going

threshold

0.7

1.7

2.1

1.18

2.38

3.14

1.5

3.15

4.2

0.7

1.7

2.1

1.5

3.15

4.2

0.7

1.7

2.1

1.5

3.15

4.2

V

2.0

4.5

6.0

Figs 6 and 7

VT−

negative-going

threshold

0.3

0.9

1.2

0.52

1.40

1.89

0.90

2.00

2.60

0.3

0.90

1.20

0.90

2.00

2.60

0.30

0.90

1.2

0.90

2.00

2.60

V

2.0

4.5

6.0

Figs 6 and 7

VH

hysteresis

(VT+ − VT−)

0.2

0.4

0.6

0.66

0.98

1.25

1.0

1.4

1.6

0.2

0.4

0.6

1.0

1.4

1.6

0.2

0.4

0.6

1.0

1.4

1.6

V

2.0

4.5

6.0

Figs 6 and 7

SYMBOL

PARAMETER

Tamb (°C)

UNIT

TEST CONDITIONS

74HC

VCC

(V)

WAVEFORMS

+25

−40 to +85

−40 to +125

min.

typ.

max.

min.

max.

min.

max.

tPHL/ tPLH

propagation delay

nA to nY

41

15

12

125

25

21

155

31

26

190

38

32

ns

2.0

4.5

6.0

Fig.8

tTHL/ tTLH

output transition

time

19

7

6

75

15

13

95

19

15

110

22

19

ns

2.0

4.5

6.0

Fig.8

Số phần tương tự - 74HC14

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