LP3943

SNVS256A – MAY 2004 – REVISED MAY 2004

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Electrical Characteristics

(1)

Limit

Symbol

Parameter

Conditions

Typical

Units

Min

Max

POWER SUPPLY

Supply Voltage

5

2.3

5.5

V

Supply Current

No Load

350

550

µA

Standby

2.0

5

Additional Standby Current

2

mA

4.3V

Power-On Reset Voltage

1.8

1.96

V

Reset Pulse Width

10

ns

LED

LOW Level Input Voltage

−0.5

0.8

V

HIGH Level Input Voltage

2.0

5.5

V

Low Level Output Current

9

(2)

12

15

mA

15

20

25

Input Leakage Current

−1

1

µA

Input/Output Capacitance

(3)

2.6

5

pF

ALL DIGITAL PINS (EXCEPT SCL AND SDA PINS)

LOW Level Input Voltage

−0.5

0.8

V

HIGH Level Input Voltage

2.0

5.5

V

Input Leakage Current

−1

1

µA

Input Capacitance

(3)

2.3

5

pF

LOW Level Input Voltage

-0.5

V

HIGH Level Input Voltage

5.5

V

LOW Level Output Voltage

0

V

LOW Level Output Current

6.5

3

mA

Clock Frequency

(3)

400

kHz

Hold Time Repeated START

(3)

0.6

µs

Condition

CLK Low Period

(3)

1.3

µs

CLK High Period

(3)

0.6

µs

Set-Up Time Repeated START

(3)

0.6

µs

Condition

Data Hold Time

(3)

300

ns

Data Set-Up Time

(3)

100

ns

Set-Up Time for STOP Condition

(3)

0.6

µs

(1)

and cold limits are guaranteed by correlating the electrical characteristics to process and temperature variations and applying statistical

process control.

(2)

Each LED pin should not exceed 25 mA and each octal (LED0–LED7; LED8–LED15) should not exceed 100 mA. The package should

not exceed a total of 200 mA.

(3)

Guaranteed by design.

6

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