DS1821S Maxim Integrated Products, DS1821S Datasheet - Page 16

• 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

AC ELECTRICAL CHARACTERISTICS:
NOTES:
1. Refer to timing diagrams in Figure 13.
2. If t
3. Time required for part to disable thermostat output.
PARAMETER
Temperature Conversion Time
EEPROM Write Time
Time Slot
Recovery Time
Write 0 Low Time
Write 1 Low Time
Read Data Valid
Reset Time High
Reset Time Low
Presence Detect High
Presence Detect Low
V
Mode Toggle Clock 16 High to V
High
Mode Toggle Clock Pulse Low Time
Mode Toggle Clock Pulse High Time
Mode Toggle Clock High-to-Low or
Low-to-High Transition Time
Capacitance
DD
Low to Mode Toggle Clock Low
RSTL
> 960 μs, a power-on-reset may occur.
DD
SYMBOL
C
t
t
PDHIGH
t
t
t
PDLOW
t
t
t
t
CONV
t
LOW0
LOW1
IN/OUT
t
SLOT
RSTH
RSTL
t
RDV
t
t
t
REC
WR
t
CH
16 of 18
PC
CP
CL
T
MIN
(-55°C to +125°C; V
480
480
100
100
0.1
0.1
60
60
15
60
1
1
TYP
0.4
10
MAX
120
120
240
100
1.0
50
15
15
60
10
25
DD
UNITS
ms
pF
=3.6V to 5.5V)
µs
µs
µs
µs
µs
µs
µs
µs
µs
ns
ns
µs
µs
ns
s
NOTES
1,2
1,3
1
1
1
1
1
1
1
1
1
1
1
1