MC74VHCT240A_15 datasheet(3/6 Pages) ONSEMI

Nome de Peças	MC74VHCT240A

Descrição Electrónicos	Octal Bus Buffer/Line Driver

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Fabricante Electrônico	ONSEMI [ON Semiconductor]

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MC74VHCT240A

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DC ELECTRICAL CHARACTERISTICS

Symbol

Parameter

Test Conditions

VCC

V

TA = 25°C

TA = − 40 to 85°C

Unit

Min

Typ

Max

Min

Max

VIH

Minimum High−Level Input

Voltage

4.5 to 5.5

2.0

V

VIL

Maximum Low−Level Input

Voltage

4.5 to 5.5

0.8

V

VOH

Minimum High−Level Output

Voltage

Vin = VIH or VIL

IOH = − 50mA

4.5

4.4

4.5

4.4

V

IOH = − 8mA

4.5

3.94

3.80

VOL

Maximum Low−Level Output

Voltage

Vin = VIH or VIL

IOL = 50mA

4.5

0.0

0.1

V

IOL = 8mA

4.5

0.36

0.44

Iin

Maximum Input Leakage Current

Vin = 5.5 V or GND

0 to 5.5

± 0.1

± 1.0

mA

IOZ

Maximum 3−State Leakage

Current

Vin = VIL or VIH

Vout = VCC or GND

5.5

±

0.25

± 2.5

mA

ICC

Maximum Quiescent Supply

Current

Vin = VCC or GND

5.5

4.0

40.0

mA

ICCT

Quiescent Supply Current

Per Input: VIN = 3.4V

Other Input: VCC or GND

5.5

1.35

1.50

mA

IOPD

Output Leakage Current

VOUT = 5.5V

0

0.5

5.0

mA

Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product

performance may not be indicated by the Electrical Characteristics if operated under different conditions.

AC ELECTRICAL CHARACTERISTICS (Input tr = tf = 3.0ns)

Symbol

Parameter

Test Conditions

TA = 25°C

TA = − 40 to 85°C

Unit

Min

Typ

Max

Min

Max

tPLH,

tPHL

Maximum Propagation Delay

A to YA or B to YB

VCC = 5.0 ± 0.5V

CL = 15pF

CL = 50pF

5.6

6.1

7.8

8.8

1.0

9.0

10.0

ns

tPZL,

tPZH

Output Enable Time

OEA to YA or OEB to YB

VCC = 5.0 ± 0.5V

CL = 15pF

RL = 1kW

CL = 50pF

7.7

8.2

10.4

11.4

1.0

12.0

13.0

ns

tPLZ,

tPHZ

Output Disable Time

OEA to YA or OEB to YB

VCC = 5.0 ± 0.5V

CL = 50pF

RL = 1kW

8.8

11.4

1.0

13.0

ns

tOSLH,

tOSHL

Output to Output Skew

VCC = 5.0 ± 0.5V

CL = 50pF

(Note 1)

1.0

ns

Cin

Maximum Input Capacitance

4

10

pF

Cout

Maximum Three−State Output

Capacitance (Output in

High−Impedance State)

9

pF

CPD

Power Dissipation Capacitance (Note 2)

Typical @ 25

°C, VCC = 5.0V

pF

19

1. Parameter guaranteed by design. tOSLH = |tPLHm − tPLHn|, tOSHL = |tPHLm − tPHLn|.

2. CPD is defined as the value of the internal equivalent capacitance which is calculated from the operating current consumption without load.

Average operating current can be obtained by the equation: ICC(OPR) = CPD VCC fin + ICC / 8 (per bit). CPD is used to determine the no−load

dynamic power consumption; PD = CPD VCC2 fin + ICC VCC.

NOISE CHARACTERISTICS (Input tr = tf = 3.0ns, CL = 50pF, VCC = 5.0V)

Symbol

Parameter

TA = 25°C

Unit

Typ

Max

VOLP

Quiet Output Maximum Dynamic VOL

0.9

1.1

V

VOLV

Quiet Output Minimum Dynamic VOL

− 0.9

− 1.1

V

VIHD

Minimum High Level Dynamic Input Voltage

2.0

V

VILD

Maximum Low Level Dynamic Input Voltage

0.8

V

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