74VCXH245WM datasheet(5/8 Pages) FAIRCHILD

Teilenummer	74VCXH245WM

Bauteilbeschribung	Low Voltage Bidirectional Transceiver with Bushold

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Hersteller	FAIRCHILD [Fairchild Semiconductor]

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AC Electrical Characteristics (Note 10)

Note 10: For CL = 50 pF, add approximately 300 ps to the AC maximum specification.

Note 11: 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).

Dynamic Switching Characteristics

Capacitance

Symbol

Parameter

TA = −40°C to +85°C, CL = 30 pF, RL = 500Ω

Units

VCC = 3.3V ± 0.3V

VCC = 2.5V ± 0.2V

VCC = 1.8V ± 0.15V

Min

Max

Min

Max

Min

Max

tPHL

Propagation Delay

0.6

3.5

0.8

4.2

1.5

8.4

ns

tPLH

An to Bn or Bn to An

tPZL

Output Enable Time

0.6

4.5

0.8

5.6

1.5

9.8

ns

tPZH

tPLZ

Output Disable Time

0.6

3.6

0.8

4.0

1.5

7.2

ns

tPHZ

tOSHL

Output to Output Skew

0.5

0.75

ns

tOSLH

(Note 11)

Symbol

Parameter

Conditions

VCC

(V)

TA = 25°C

Units

Typical

VOLP

Quiet Output Dynamic Peak VOL

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

1.8

0.3

V

2.5

0.7

3.3

1.0

VOLV

Quiet Output Dynamic Valley VOL

CL = 30 pF, VIH = VCC, V IL = 0V

1.8

−0.3

V

2.5

−0.7

3.3

−1.0

VOHV

Quiet Output Dynamic Valley VOH

CL = 30 pF, VIH = VCC, V IL = 0V

1.8

1.3

V

2.5

1.7

3.3

2.0

Symbol

Parameter

Conditions

TA = +25°C

Units

Typical

CIN

Input Capacitance

VI = 0V or VCC, VCC = 1.8V, 2.5V or 3.3V

6

pF

CI/O

Input/Output Capacitance

VI = 0V or VCC, VCC = 1.8V, 2.5V or 3.3V

7

pF

CPD

Power Dissipation Capacitance

VI = 0V or VCC, f = 10 MHz, VCC = 1.8V, 2.5V or 3.3V

20

pF

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