74VCXH245 datasheet(5/8 Pages) ONSEMI

5 / 8 page

74VCXH245

http://onsemi.com

AC CHARACTERISTICS (Note 7; tR = tF = 2.0 ns; CL = 30 pF; RL = 500 W)

Limits

TA = −40°C to +85°C

VCC = 3.0 V to 3.6 V VCC = 2.3 V to 2.7 V

VCC = 1.65 V to1.95 V

Symbol

Parameter

Waveform

Min

Max

Min

Max

Min

Max

Unit

tPLH

tPHL

Propagation Delay

Input to Output

0.6

3.5

0.8

4.2

1.5

8.4

tPZH

tPZL

Output Enable Time to

High and Low Level

0.6

4.5

0.8

5.6

1.5

9.8

tPHZ

tPLZ

Output Disable Time From

High and Low Level

0.6

3.6

0.8

4.0

1.5

7.2

tOSHL

tOSLH

Output−to−Output Skew

(Note 8)

0.5

0.75

7. For CL = 50 pF, add approximately 300 ps to the AC maximum specification.

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); parameter

guaranteed by design.

DYNAMIC SWITCHING CHARACTERISTICS

TA = +25°C

Symbol

Characteristic

Condition

Typ

Unit

VOLP

Dynamic LOW Peak Voltage

)

VCC = 1.8 V, CL = 30 pF, VIH = VCC, VIL = 0 V

0.3

(Note 9)

VCC = 2.5 V, CL = 30 pF, VIH = VCC, VIL = 0 V

0.7

VCC = 3.3 V, CL = 30 pF, VIH = VCC, VIL = 0 V

1.0

VOLV

Dynamic LOW Valley Voltage

)

VCC = 1.8 V, CL = 30 pF, VIH = VCC, VIL = 0 V

−0.3

(Note 9)

VCC = 2.5 V, CL = 30 pF, VIH = VCC, VIL = 0 V

−0.7

VCC = 3.3 V, CL = 30 pF, VIH = VCC, VIL = 0 V

−1.0

VOHV

Dynamic HIGH Valley Voltage

)

VCC = 1.8 V, CL = 30 pF, VIH = VCC, VIL = 0 V

1.3

(Note 10)

VCC = 2.5 V, CL = 30 pF, VIH = VCC, VIL = 0 V

1.7

VCC = 3.3 V, CL = 30 pF, VIH = VCC, VIL = 0 V

2.0

9. Number of outputs defined as “n”. Measured with “n−1” outputs switching from HIGH−to−LOW or LOW−to−HIGH. The remaining output is

measured in the LOW state.

10. Number of outputs defined as “n”. Measured with “n−1” outputs switching from HIGH−to−LOW or LOW−to−HIGH. The remaining output is

measured in the HIGH state.

CAPACITIVE CHARACTERISTICS

Symbol

Parameter

Condition

Typical

Unit

CIN

Input Capacitance

Note 11

COUT

Output Capacitance

Note 11

CPD

Power Dissipation Capacitance

Note 11, 10 MHz

11. VCC = 1.8, 2.5 or 3.3 V; VI = 0 V or VCC.

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