74HCT4520 datasheet(4/8 Pages) TI

Nome de Peças	74HCT4520

Descrição Electrónicos	High Speed CMOS Logic Dual Synchronous Counters

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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

-40oCTO85oC

-55oC TO

125oC

UNITS

VI (V)

IO (mA)

MIN

TYP

MAX

MIN

MAX

MIN

MAX

HCT Input Loading Table

INPUT

UNIT LOADS

MR

1.2

CP

0.25

ENABLE

0.5

NOTE: Unit Load is

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

360

µA max at 25oC.

Prerequisite for Switching Speciﬁcations

PARAMETER

SYMBOL

VCC (V)

25oC

-40oC TO 85oC

-55oC TO 125oC

UNITS

MIN

TYP

MAX

MIN

MAX

MIN

MAX

HC TYPES

Maximum Clock

Frequency

fMAX

2

6

-

5-4-

MHz

4.5

30

-

24

-

20

-

MHz

6

35

-

28

-

24

-

MHz

CP Pulse Width

tW

2

80

-

100

-

120

-

ns

4.5

16

-

20

-

24

-

ns

6

14-

-17-20

-

ns

MR Pulse Width

tW

2

100

-

125

-

150

-

ns

4.5

20

-

25

-

30

-

ns

6

17-

-21-26

-

ns

CD74HC4518, CD74HC4520, CD74HCT4520

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