74HC14 datasheet(5/8 Pages) PHILIPS

部品番号	74HC14

部品情報	Hex inverting Schmitt trigger

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メーカー	PHILIPS [NXP Semiconductors]

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5 / 8 page

September 1993

5

Philips Semiconductors

Product speciﬁcation

Hex inverting Schmitt trigger

74HC/HCT14

DC CHARACTERISTICS FOR 74HCT

For the DC characteristics see

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

given below.

Output capability: standard

ICC category: SSI

Note to HCT types

The value of additional quiescent supply current (

∆ICC) for a unit load of 1 is given in the family specifications.

To determine

∆ICC per input, multiply this value by the unit load coefficient shown in the table below.

Transfer characteristics for 74HCT

Voltages are referenced to GND (ground = 0 V)

AC CHARACTERISTICS FOR 74HCT

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

INPUT

UNIT LOAD COEFFICIENT

nA

0.3

SYMBOL

PARAMETER

Tamb (°C)

UNIT

TEST CONDITIONS

74HCT

VCC

(V)

WAVEFORMS

+25

−40 to +85

−40 to +125

min.

typ.

max.

min.

max.

min.

max.

VT+

positive-going

threshold

1.2

1.4

1.41

1.59

1.9

2.1

1.2

1.4

1.9

2.1

1.2

1.4

1.9

2.1

V

4.5

5.5

Figs 6 and 7

VT−

negative-going

threshold

0.5

0.6

0.85

0.99

1.2

1.4

0.5

0.6

1.2

1.4

0.5

0.6

1.2

1.4

V

4.5

5.5

Figs 6 and 7

VH

hysteresis

(VT+ −VT−)

0.4

0.56

0.60

−

0.4

−

0.4

−

V

4.5

5.5

Figs 6 and 7

SYMBOL

PARAMETER

Tamb (°C)

UNIT

TEST CONDITIONS

74HCT

VCC

(V)

WAVEFORMS

+25

−40 to +85

−40 to +125

min.

typ.

max.

min.

max.

min.

max.

tPHL/ tPLH

propagation delay

nA, to nY

20

34

43

51

ns

4.5

Fig.8

tTHL/ tTLH

output transition

time

7

15

19

22

ns

4.5

Fig.8

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