Capacitance – Fairchild TINYLOGIC UHS NC7SB3257 User Manual

Page 4

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4

NC7SB3257

AC Electrical Characteristics

Note 6: This parameter is guaranteed by design but not tested. The bus switch contributes no propagation delay other than the RC delay of the On Resis-
tance of the switch and the 50 pF load capacitance, when driven by an ideal voltage source (zero output impedance).

Note 7: Guaranteed by design.

Capacitance

(Note 8)

Note 8: Capacitance is characterized but not tested.

Symbol

Parameter

T

A

=

40

°

C to

+

85

°

C

Units

Conditions

V

CC

C

L

=

50 pF, RU

=

RD

=

500

Figure

(V)

Min

Typ

Max

Number

t

PHL

Propagation Delay Bus to Bus

4.0

55

0.25

ns

V

I

=

OPEN

Figures

1, 2

t

PLH

(Note 6)

t

PZL

Output Enable Time

4.5

5.5

1.8

6.5

ns

V

I

=

7V for t

PZL

Figures

1, 2

t

PZH

4.0

1.8

7.3

V

I

=

0V for t

PZH

t

PLZ

Output Disable Time

4.5

5.5

0.8

4.7

V

I

=

7V for t

PLZ

Figures

1, 2

t

PHZ

4.0

0.8

5.3

V

I

=

0V for t

PHZ

t

B-M

Break Before Make Time

4.5

5.5

0.5

ns

Figure 3

(Note 7)

4.0

0.5

Symbol

Parameter

Typ

Max

Units

Conditions

C

IN

Control Pin Input Capacitance

2.3

pF

V

CC

=

0V

C

IO-B

B Port OFF Capacitance

5.7

pF

V

CC

=

5.0V

C

IO-A

A Port ON Capacitance

16

pF

V

CC

=

5.0V

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