DS1249Y/AB

3 of 8

ABSOLUTE MAXIMUM RATINGS*

Voltage on Any Pin Relative to Ground

-0.3V to +6.0V

Operating Temperature

0°C to 70°C, -40°C to +85°C for IND parts

Storage Temperature

-40°C to +70°C, -40°C to +85°C for IND parts

Soldering Temperature

260°C for 10 seconds

*

This is a stress rating only and functional operation of the device at these or any other conditions

above those indicated in the operation sections of this specification is not implied. Exposure to

absolute maximum rating conditions for extended periods of time may affect reliability.

RECOMMENDED DC OPERATING CONDITIONS

PARAMETER

SYMBOL

MIN

TYP

MAX

UNITS

NOTES

DS1249AB Power Supply Voltage

4.75

5.0

5.25

V

DS1249Y Power Supply Voltage

4.5

5.0

5.5

V

Logic 1

2.2

V

Logic 0

0.0

0.8

V

DC ELECTRICAL

±=5% for DS1249AB)

CHARACTERISTICS

±=10% for DS1249Y)

PARAMETER

SYMBOL

MIN

TYP

MAX

UNITS

NOTES

Input Leakage Current

-2.0

+2.0

µA

≥ V

IH

≤ V

CC

-2.0

+2.0

µA

Output Current @ 2.4V

-1.0

mA

Output Current @ 0.4V

2.0

mA

1.0

1.5

mA

100

150

µA

Operating Current

85

mA

Write Protection Voltage (DS1249AB)

4.50

4.62

4.75

V

Write Protection Voltage (DS1249Y)

4.25

4.37

4.5

V

CAPACITANCE

°C)

PARAMETER

SYMBOL

MIN

TYP

MAX

UNITS

NOTES

Input Capacitance

10

20

pF

Input/Output Capacitance

10

20

pF