If Military/Aerospace specified devices are required,

please contact the National Semiconductor Sales Office/

Distributors for availability and specifications.

Supply Voltage (V

−0.5V to 4.0V

Input Voltage (V

−0.5V to 5.5V +0.5V

Output Voltage (V

−0.5V to V

Storage Temperature (T

−65˚C to +165˚C

Power Dissipation (P

Lead Temperature (T

(Soldering, 10 seconds)

+200˚C

7.2 CAPACITANCE

T

Symbol

Parameter

Conditions

Min

Typ

Max

Units

C

IN

Input Pin Capacitance

10

pF

C

ICLK

Clock Input Capacitance

12

pF

C

IO

I/O Pin Capacitance

f = 1 MHz

10

pF

C

O

Output Pin Capacitance

f = 1 MHz

10

pF

Note 1: “Absolute Maximum Ratings” are those values beyond which the safety of the device cannot be guaranteed. They are not meant to imply that the devices

should be operated at these limits. The table of “Electrical Characteristics” specifies conditions of device operation.

Note 2: Capacitance limits are guaranteed by simulation but are not tested.

7.3 ELECTRICAL CHARACTERISTICS

T

Symbol

Parameter

Conditions

Min

Typ

Max

Units

I

CC

V

V

V

20

35

50

mA

V

IH

Input High Voltage

1.65

5.5

V

V

IL

Input Low Voltage

−0.5

1.0

V

CORE (3.3V Only)

CV

cc

Core Supply Voltage

3.2

3.4

V

I/O - 3.3V Signalling Environment

V

ih

Input High Voltage

1.65

V

dd

V

V

il

Input Low Voltage

1.0

V

V

oh

Output High Voltage

2.97

V

V

ol

Output Low Voltage

0.33

V

Gameport I/O DC Characteristic (for pull up resistor values of 2.5k to 10k

Ω)

Vtranlh

For Schmitt trigger I/O, Input

voltage at trigger point (output is

V

cc/2

When input goes

from low to high

2.1

V

Vtranhl

For Schmitt trigger I/O, Input

voltage at trigger point (output is

V

cc/2

When input goes

from high to low

1.3

V

7.4.1 Timing Table

T

Symbol

Parameter

Min

Max

Units

PCI Clock

Tcyc

CLK Cycle Time

30

ns

Thigh

CLK High Time

14

16

ns

Tlow

CLK Low Time

14

16

ns

Tskew

CLK Skew

−2

2

ns

AC’97 Clock

Tcyc

ACCLK Cycle Time

72

ns

Thigh

ACCLK High Time

36

45

ns

Tlow

ACCLK Low Time

36

45

ns

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