DS28EC20: 20Kb 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

-55°C to +125°C

Lead Temperature (soldering, 10s)

+300°C

Soldering Temperature (reflow)

TO-92

+250°C

TSOC

+260°C

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.

5.0V SUPPLY ELECTRICAL CHARACTERISTICS

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

I/O PIN GENERAL DATA

1-Wire Pullup Resistance

(Notes 2, 3)

0.3

2.2

kΩ

Input Capacitance

(Notes 4, 5)

2000

pF

Input Load Current

0.05

3.5

µA

High-to-Low Switching

Threshold

(Notes 5, 6, 7)

1.6

1.8

V

Input Low Voltage

(Notes 2, 8)

0.5

V

Low-to-High Switching

Threshold

(Notes 5, 6, 9)

2.5

1.1

V

Switching Hysteresis

(Notes 5, 6, 10)

0.30

1.30

V

Output Low Voltage

At 4mA (Note 11)

0.20

V

Recovery Time

(Notes 2, 12)

Standard speed

5

µs

Overdrive speed

5

Rising-Edge Hold-off Time

(Notes 5, 13)

Standard speed

0.5

5.0

µs

Overdrive speed

Not applicable (0)

Timeslot Duration

(Notes 2, 14)

Standard speed

65

µs

Overdrive speed

11

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

Reset-Low Time (Note 2)

Standard speed

480

640

µs

Overdrive speed

48

80

Presence-Detect High

Time

Standard speed

15

60

µs

Overdrive speed

2

6

Presence-Detect Low

Time

Standard speed

60

240

µs

Overdrive speed

8

24

Presence-Detect Sample

Time (Notes 2, 15)

Standard speed

60

75

µs

Overdrive speed

6

10

I/O PIN, 1-Wire WRITE

Write-0 Low Time

(Notes 2, 16, 17)

Standard speed

60

120

µs

Overdrive speed

6

15.5

Write-1 Low Time

(Notes 2, 17)

Standard speed

1

15

µs

Overdrive speed

1

2

I/O PIN, 1-Wire READ

Read-Low Time

(Notes 2, 18)

Standard speed

5

15 - δ

µs

Overdrive speed

1

2 - δ

Read-Sample Time

(Notes 2, 18)

Standard speed

15

µs

Overdrive speed

2