74ALVCH16244 datasheet(5/10 Pages) STMICROELECTRONICS

Part #	74ALVCH16244

Description	LOW VOLTAGE CMOS 16-BIT BUS BUFFER (3-STATE) WITH 3.6V TOLERANT INPUTS AND OUTPUTS

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74ALVCH16244

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AC ELECTRICAL CHARACTERISTICS

1) Skew is defined as the absolute value of the difference between the actual propagation delay for any two outputs of the same device switch-

ing in the same direction, either HIGH or LOW (tOSLH =|tPLHm -tPLHn|, tOSHL =|tPHLm -tPHLn|)

2) Parameter guaranteed by design

CAPACITIVE CHARACTERISTICS

1) CPD is defined as the value of the IC’s internal equivalent capacitance which is calculated from the operating current consumption without

load. (Refer to Test Circuit). Average operating current can be obtained by the following equation. ICC(opr) =CPD xVCC xfIN +ICC/16 (per

circuit)

Symbol

Parameter

Test Condition

Value

Unit

VCC

(V)

CL

(pF)

RL

(

Ω)

ts = tr

(ns)

-40 to 85 °C

-55 to 125 °C

Min.

Max.

Min.

Max.

tPLH tPHL Propagation Delay

Time

1.65 to 1.95

30

1000

2.0

1

5.1

1

5.1

ns

2.3 to 2.7

30

500

2.0

1

3.7

1

3.7

2.7

50

500

2.5

1

3.6

1

3.6

3.0 to 3.6

50

500

2.5

1

3.0

1

3.0

tPZL tPZH Output Enable Time

1.65 to 1.95

30

1000

2.0

1

7.1

1

7.1

2.3 to 2.7

30

500

2.0

1

5.7

1

5.7

2.7

50

500

2.5

1

5.4

1

5.4

3.0 to 3.6

50

500

2.5

1

4.4

1

4.4

tPLZ tPHZ Output Disable Time 1.65 to 1.95

30

1000

2.0

1

6.5

1

6.5

2.3 to 2.7

30

500

2.0

1

5.2

1

5.2

2.7

50

500

2.5

1

4.6

1

4.6

3.0 to 3.6

50

500

2.5

1

4.1

1

4.1

Symbol

Parameter

Test Condition

Value

Unit

VCC

(V)

TA =25°C

Min.

Typ.

Max.

CIN

Input Capacitance Control

Inputs

3.3

VIN =VCC or GND

3pF

CIN

Input Capacitance Data Inputs

3.3

VIN =VCC or GND

6pF

COUT

Output Capacitance

3.3

VIN = 0 to VCC

7pF

CPD

Power Dissipation Capacitance

Output enabled (note 1)

3.3

fIN = 10MHz

CL=50pF

VIN = 0 or VCC

19

pF

2.5

16

CPD

Power Dissipation Capacitance

Output disabled (note 1)

3.3

5

2.5

4

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