Datasheet

DS1249Y/AB
3 of 9
ABSOLUTE MAXIMUM RATINGS
Voltage on Any Pin Relative to Ground -0.3V to +6.0V
Operating Temperature Range
Commercial: 0°C to +70°C
Industrial: -40°C to +85°C
Storage Temperature Range -40°C to +85°C
Lead Temperature (soldering, 10s) +260°C
Note: EDIP is wave or hand soldered only.
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 (T
A
: See Note 10)
PARAMETER SYMBOL MIN TYP MAX UNITS NOTES
DS1249AB Power Supply Voltage V
CC
4.75 5.0 5.25 V
DS1249Y Power Supply Voltage V
CC
4.5 5.0 5.5 V
Logic 1 V
IH
2.2 V
CC
V
Logic 0 V
IL
0.0 0.8 V
DC ELECTRICAL CHARACTERISTICS (V
CC
= 5V ±5% for DS1249AB)
(T
A
: See Note 10) (V
CC
= 5V ±10% for DS1249Y)
PARAMETER SYMBOL MIN TYP MAX UNITS NOTES
Input Leakage Current I
IL
-2.0 +2.0
µA
I/O Leakage Current
CE
≥ V
IH
≤ V
CC
I
IO
-2.0 +2.0
µA
Output Current @ 2.4V I
OH
-1.0 mA
Output Current @ 0.4V I
OL
2.0 mA
Standby Current
CE
=2.2V
I
CCS1
1.0 1.5 mA
Standby Current
CE
=V
CC
-0.5V
I
CCS2
100 150
µA
Operating Current I
CCO1
85 mA
Write Protection Voltage (DS1249AB) V
TP
4.50 4.62 4.75 V
Write Protection Voltage (DS1249Y) V
TP
4.25 4.37 4.5 V
CAPACITANCE (T
A
= +25°C)
PARAMETER SYMBOL MIN TYP MAX UNITS NOTES
Input Capacitance C
IN
10 20 pF
Input/Output Capacitance C
I/O
10 20 pF