DS1231/S
022698 7/9
ABSOLUTE MAXIMUM RATINGS*
Voltage on V
CC
Pin Relative to Ground -0.5V to +7.0V
Voltage on I/O Relative to Ground -0.5V to V
CC
+ 0.5V
Operating Temperature 0°C to 70°C
Operating Temperature (Industrial Version) –40°C to +85°C
Storage Temperature -55°C to +125°C
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 (0°C to 70°C)
PARAMETER SYMBOL MIN TYP MAX UNITS NOTES
Supply Voltage V
CC
4.5 5.0 5.5 V 1
Input Pin 1 V
IN
V
CC
V 1
DC ELECTRICAL CHARACTERISTICS (0°C to 70°C; V
CC
= 4.5 to 5.5V)
PARAMETER SYMBOL MIN TYP MAX UNITS NOTES
Low Level @ RST V
OL
0.4 V 1
Output Voltage @ –500 µA V
OH
V
CC
–0.5V V
CC
–0.1V V 1, 6
Input Leakage I
IL
-10 +10 µA 2
Output Current @2.4V I
OH
1.0 2.0 mA 5
Output Current @0.4V I
OL
2.0 3.0 mA
Operating Current I
CC
0.5 2.0 mA 3
Input Pin 1 (Mode=GND) I
C
15 25 50 µA
Input Pin 1 (Mode=V
CC
) I
C
0.1 µA
IN Trip Piont (Mode=GND) V
TP
See Figure 3 1
IN Trip Point (Mode=V
CC
) V
TP
1
V
CC
Trip Point (TOL=GND) V
CCTP
4.50 4.62 4.74 V 1
V
CC
Trip Point (TOL=V
CC
) V
CCTP
4.25 4.37 4.49 V 1
CAPACITANCE (T
A
= 25°C)
PARAMETER SYMBOL MIN TYP MAX UNITS NOTES
Input Capacitance C
IN
5 pF
Output Capacitance C
OUT
7 pF
