MC74HC244ADWR2G datasheet(4/9 Pages) ONSEMI

Part #	MC74HC244ADWR2G

Description	Octal 3-State Noninverting Buffer/Line Driver/ Line Receiver

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MC74HC244A

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4

DC ELECTRICAL CHARACTERISTICS (Voltages Referenced to GND)

Guaranteed Limit

Symbol

Unit

v 125_C

v 85_C

– 55 to

25_C

VCC

V

Test Conditions

Parameter

VOL

Maximum Low−Level Output

Voltage

Vin = VIL

|Iout| v 20 mA

2.0

4.5

6.0

0.1

V

Vin = VIL |Iout| v 2.4 mA

|Iout| v 6.0 mA

|Iout| v 7.8 mA

3.0

4.5

6.0

0.26

0.33

0.4

Iin

Maximum Input Leakage Current

Vin = VCC or GND

6.0

± 0.1

± 1.0

mA

IOZ

Maximum Three−State Leakage

Current

Output in High−Impedance State

Vin = VIL or VIH

Vout = VCC or GND

6.0

± 0.5

± 5.0

± 10

mA

ICC

Maximum Quiescent Supply Cur-

rent (per Package)

Vin = VCC or GND

Iout = 0 mA

6.0

4.0

40

160

mA

AC ELECTRICAL CHARACTERISTICS (CL = 50 pF, Input tr = tf = 6 ns)

Symbol

Parameter

VCC

V

Guaranteed Limit

Unit

– 55 to

25_C

v85_C

v125_C

tPLH,

tPHL

Maximum Propagation Delay, A to YA or B to YB

(Figures 1 and 3)

2.0

3.0

4.5

6.0

96

50

18

15

115

60

23

20

135

70

27

23

ns

tPLZ,

tPHZ

Maximum Propagation Delay, Output Enable to YA or YB

(Figures 2 and 4)

2.0

3.0

4.5

6.0

110

60

22

19

140

70

28

24

165

80

33

28

ns

tPZL,

tPZH

Maximum Propagation Delay, Output Enable to YA or YB

(Figures 2 and 4)

2.0

3.0

4.5

6.0

110

60

22

19

140

70

28

24

165

80

33

28

ns

tTLH,

tTHL

Maximum Output Transition Time, Any Output

(Figures 1 and 3)

2.0

3.0

4.5

6.0

60

23

12

10

75

27

15

13

90

32

18

15

ns

Cin

Maximum Input Capacitance

−

10

pF

Cout

Maximum Three−State Output Capacitance

(Output in High−Impedance State)

−

15

pF

CPD

Power Dissipation Capacitance (Per Buffer)*

Typical @ 25°C, VCC = 5.0 V

pF

34

* Used to determine the no−load dynamic power consumption: PD = CPD VCC2f + ICC VCC.

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