25˚C. (Continued)

Symbol

Parameter

Conditions

Typical

Limits

Units

(Note 8)

(Note 9)

(Limits)

SERIAL BUS TIMING CHARACTERISTICS

t

1

SCL (Clock) Period

2.5

µs (min)

t

2

Data In Setup Time to SCL High

100

ns (min)

t

3

Data Out Stable After SCL Low

0

ns (min)

t

4

SDA Low Setup Time to SCL Low (start)

100

ns (min)

t

5

SDA High Hold Time After SCL High (stop)

100

ns (min)

Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is

functional, but do not guarantee specific performance limits. For guaranteed specifications and test conditions, see the Electrical Characteristics. The guaranteed

specifications apply only for the test conditions listed. Some performance characteristics may degrade when the device is not operated under the listed test

conditions.

Note 2: All voltages are measured with respect to GND, unless otherwise specified

The 20 mA maximum package input current rating limits the number of pins that can safely exceed the power supplies with an input current of 5 mA to four.

Note 5: The human body model is a 100 pF capacitor discharged through a 1.5 k

Ω resistor into each pin. The machine model is a 200 pF capacitor discharged

directly into each pin.

Note 6: See the section titled “Surface Mount” found in any post 1986 National Semiconductor Linear Data Book for other methods of soldering surface mount

devices.

Note 7: Each input and output is protected by a nominal 6.5V breakdown voltage zener diode to GND; as shown below, input voltage magnitude up to 0.3V above

conversions.

DS100036-6

FIGURE 3. Serial Bus Timing Diagram

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