DS2431: 1024-Bit, 1-Wire EEPROM

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ABSOLUTE MAXIMUM RATINGS

I/O Voltage to GND

-0.5V, +6V

I/O Sink Current

20mA

Operating Temperature Range

-40°C to +85°C

Junction Temperature

+150°C

Storage Temperature Range

-40°C to +85°C

Soldering Temperature

See IPC/JEDEC J-STD-020A

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only,

and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is

not implied. Exposure to the absolute maximum rating conditions for extended periods may affect device reliability.

ELECTRICAL CHARACTERISTICS

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

I/O PIN GENERAL DATA

1-Wire Pullup Resistance

(Notes 1, 2)

0.3

2.2

k

Ω

Input Capacitance

(Notes 3, 4)

100

800

pF

Input Load Current

0.05

2.2

µA

High-to-Low Switching

Threshold

(Notes 4, 5, 6)

0.5

4.1

V

Input Low Voltage

(Notes 1, 7)

0.3

V

Low-to-High Switching

Threshold

(Notes 4, 5, 8)

1.0

4.9

V

Switching Hysteresis

(Notes 4, 5, 9)

0.22

1.70

V

Output Low Voltage

At 4mA (Note 10)

0.4

V

Ω

5

Ω

2

Recovery Time

(Notes 1,11)

Overdrive speed, directly prior to reset

Ω

5

µs

Standard speed (Note 12)

0.5

5.0

Rising-Edge Hold-off Time

Overdrive speed

Not applicable (0)

µs

Standard speed

65

Timeslot Duration (Note 1)

Overdrive speed (Note 13)

9

µs

I/O PIN, 1-WIRE RESET, PRESENCE DETECT CYCLE

480

640

Standard speed (Note 12)

504

640

48

80

Reset Low Time (Note 1)

Overdrive speed (Note 13)

53

80

µs

15

60

Standard speed (Note 13)

15

63

Presence Detect High

Time

Overdrive speed (Note 13)

2

7

µs

1.1

3.75

Standard speed

1.1

7

Presence Detect Fall Time

(Notes 4, 14)

Overdrive speed

1.1

µs

Standard speed

60

240

8

24

Presence Detect Low

Time

Overdrive speed (Note 13)

8

26

µs

64

75

Standard speed

70

75

Presence Detect Sample

Time (Note 1)

Overdrive speed

8.1

10

µs