74LVT2245SJ_08 datasheet(5/9 Pages) FAIRCHILD

Nome de Peças	74LVT2245SJ

Descrição Electrónicos	Low Voltage Octal Bidirectional Transceiver with 3-STATE Inputs/Outputs and 25 B Port Outputs

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74LVT2245, 74LVTH2245 Rev. 1.5.0

5

Dynamic Switching Characteristics(6)

Notes:

6. Characterized in SOIC package. Guaranteed parameter, but not tested.

7. Max number of outputs defined as (n). n–1 data inputs are driven 0V to 3V. Output under test held LOW.

AC Electrical Characteristics

Note:

8. Skew is defined as the absolute value of the difference between the actual propagation delay for any two

separate outputs of the same device. The specification applies to any outputs switching in the same direction,

either HIGH-to-LOW (tOSHL) or LOW-to-HIGH (tOSLH).

Capacitance(9)

Note:

9. Capacitance is measured at frequency f

= 1MHz, per MIL-STD-883, Method 3012.

Symbol

Parameter

VCC (V)

Conditions

TA = 25°C

Units

CL = 50pF, RL = 500Ω

Min.

Typ.

Max.

VOLP

Quiet Output Maximum

Dynamic VOL

3.3

(7)

0.8

V

VOLV

Quiet Output Minimum

Dynamic VOL

3.3

(7)

–0.8

V

Symbol

Parameter

TA = –40°C to +85°C,

CL = 50pF, RL = 500Ω

Units

VCC = 3.3V ± 0.3V

VCC = 2.7V

Min.

Max.

Min.

Max.

tPLH

Propagation Delay Data to B Port Output

1.2

4.4

1.2

5.1

ns

tPHL

1.2

4.4

1.2

5.1

tPLH

Propagation Delay Data to A Port Output

1.2

3.6

1.2

4.0

ns

tPHL

1.2

3.5

1.2

4.0

tPZH

Output Enable Time for B Port Output

1.3

6.2

1.3

7.3

ns

tPZL

1.7

6.2

1.7

7.3

tPZH

Output Enable Time for A Port Output

1.3

5.5

1.3

7.1

ns

tPZL

1.7

5.7

1.7

6.7

tPHZ

Output Disable Time for B Port Output

2.0

5.9

2.0

6.5

ns

tPLZ

2.0

5.4

2.0

5.7

tPHZ

Output Disable Time for A Port Output

2.0

5.9

2.0

6.5

ns

tPLZ

2.0

5.0

2.0

5.1

tOSHL, tOSLH A Port Output to Output Skew

(8)

1.0

ns

tOSHL, tOSLH B Port Output to Output Skew

(8)

1.0

ns

Symbol

Parameter

Conditions

Typical

Units

CIN

Input Capacitance

VCC = 0V, VI = 0V or VCC

4pF

CI/O

Input/Output Capacitance

VCC = 3.0V, VO = 0V or VCC

8pF

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