DS1821S Maxim Integrated Products, DS1821S Datasheet - Page 15

• Manufacturer Part Number: DS1821S
• Description: IC THERMOMETER/STAT PROG 8-SOIC
• Manufacturer: Maxim Integrated Products

Specifications of DS1821S

• Function: Thermometer, Thermostat
• Topology: Comparator, Register Bank
• Sensor Type: Internal
• Sensing Temperature: -55°C ~ 125°C
• Output Type: Digital
• Output Alarm: No
• Output Fan: No
• Voltage - Supply: 2.7 V ~ 5.5 V
• Operating Temperature: -55°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (5.3mm Width), 8-SOP, 8-SOEIAJ
• Full Temp Accuracy: +/- 1 C
• Digital Output - Bus Interface: Serial (1-Wire)
• Digital Output - Number Of Bits: 8 bit
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 55 C
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

ABSOLUTE MAXIMUM RATINGS*
Voltage on any pin relative to ground
Operating temperature
Storage temperature
Soldering temperature
*These are stress ratings only and functional operation of the device at these or any other conditions
DC ELECTRICAL CHARACTERISTICS
PARAMETER
Supply Voltage
Thermometer
Error
DQ Logic Low
DQ Logic High
Sink Current
Standby Current
Active Current
DQ Input
Current
NOTES:
1.
2.
3.
4.
5.
6.
7.
8.
9.
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.
All voltages are referenced to ground.
Thermometer error reflects the sensor accuracy as tested during calibration.
See typical performance curve in Figure 11 for specification limits outside the 0°C to +85°C range.
For T<0°C, accuracy degrades by 0.5°C/V for V
Logic low voltages are specified at a sink current of 4 mA.
Logic high voltages are specified at a source current of 1 mA.
Standby current is typically 5 μA at 125°C.
Active current refers to supply current during active temperature conversions or EEPROM writes.
DQ line is high (“hi-Z” state).
SYMBOL
V
t
V
V
I
I
ERR
I
I
DD
DQ
DD
Q
L
IH
IL
V
V
V
-55°C to +125°C
DD
DD
DD
-55°C to +85°C
CONDITION
0°C to +85°C
V
= 3.6V to 5.5V
= 3.6V to 5.5V
= 3.6V to 5.5V
V
DQ
DD
= 0.4V
= 5V
–0.5V to +7.0V
–55°C to +125°C
–55°C to +125°C
See-JTD-020A Specification
15 of 18
DD
MIN
+2.7
-0.3
+2
<4.3V.
4
(-55°C to +125°C; V
TYP
See Typical Curve (Figure 11)
500
1
5
±1
The lower of
V
DD
MAX
1000
+5.5
+0.8
+5.5
or
3
+ 0.3
DD
°C
UNITS
=2.7V to 5.5V)
mA
μA
μA
µA
V
V
NOTES
2,3,4
1,5
1,6
1
1
7
8
9