CD74HCT42E datasheet(4/6 Pages) TI

Nome de Peças	CD74HCT42E

Descrição Electrónicos	High Speed CMOS Logic BCD To Decimal Decoder 1 of 10

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Fabricante Electrônico	TI [Texas Instruments]

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4

HCT TYPES

High Level Input

Voltage

VIH

-

4.5 to

5.5

2-

-

2

-

2

-

V

Low Level Input

Voltage

VIL

-

4.5 to

5.5

-

0.8

-

0.8

-

0.8

V

High Level Output

Voltage

CMOS Loads

VOH

VIH or VIL

-0.02

4.5

4.4

-

4.4

-

4.4

-

V

High Level Output

Voltage

TTL Loads

-4

4.5

3.98

-

3.84

-

3.7

-

V

Low Level Output

Voltage

CMOS Loads

VOL

VIH or VIL

0.02

4.5

-

0.1

-

0.1

-

0.1

V

Low Level Output

Voltage

TTL Loads

4

4.5

-

0.26

-

0.33

-

0.4

V

Input Leakage

Current

II

VCC and

GND

0

5.5

-

±0.1

-

±1-

±1

µA

Quiescent Device

Current

ICC

VCC or

GND

0

5.5

-

8

-

80

-

160

µA

Additional Quiescent

Device Current Per

Input Pin: 1 Unit Load

∆ICC

VCC

-2.1

-

4.5 to

5.5

-

100

360

-

450

-

490

µA

NOTE: For dual-supply systems theoretical worst case (VI = 2.4V, VCC = 5.5V) speciﬁcation is 1.8mA.

DC Electrical Speciﬁcations (Continued)

PARAMETER

SYMBOL

TEST

CONDITIONS

VCC

(V)

25oC

-40oC TO 85oC -55oC TO 125oC

UNITS

VI (V)

IO (mA)

MIN

TYP

MAX

MIN

MAX

MIN

MAX

HCT Input Loading Table

INPUT

UNIT LOADS

All

1

NOTE: Unit Load is

∆ICC limit speciﬁed in DC Electrical Table, e.g.

360

µA max at 25oC.

Switching Speciﬁcations Input tr, tf = 6ns

PARAMETER

SYMBOL

TEST

CONDITIONS

VCC (V)

25oC

-40oC TO

85oC

-55oC TO

125oC

UNITS

MIN

TYP

MAX

MIN

MAX

MIN

MAX

HC TYPES

Propagation Delay,

Input to Y (Figure 1)

tPLH, tPHL

CL = 50pF

2

-

150

-

190

-

225

ns

4.5

-

30

-

38

-

45

ns

6

-

26

-

33

-

38

ns

Any Input to YtPLH, tPHL

CL = 15pF

5

-

12

-

ns

Output Transition Time

(Figure 1)

tTLH, tTHL

CL = 50pF

2

-

75

-

95

-

110

ns

4.5

-

15

-

19

-

22

ns

6

-

13

-

16

-

19

ns

Input Capacitance

CIN

-

10

-

10

-

10

pF

CD74HC42, CD74HCT42

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