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DS1621S Datasheet

  • DS1621S

  • (93.55 k)

  • 95.68KB

  • 14頁

  • ETC

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DS1621
PRELIMINARY
DS1621
Digital Thermometer and Thermostat
FEATURES
PIN ASSIGNMENT
SDA
SCL
T
OUT
GND
1
2
3
4
8
7
6
5
V
DD
A0
A1
A2
鈥?/div>
Temperature measurements require no external com-
ponents
鈥?/div>
Measures
temperatures from 鈥?5擄C to +125擄C in
0.5擄C increments. Fahrenheit equivalent is 鈥?7擄F to
257擄F in 0.9擄F increments
鈥?/div>
Temperature is read as a 9鈥揵it value (two byte trans-
fer)
DS1621S
8鈥揚IN SOIC (150 MIL)
See Mech. Drawings
Section
鈥?/div>
Converts temperature to digital word in 1 second
鈥?/div>
Thermostatic settings are user definable and nonvol-
atile
SDA
SCL
T
OUT
GND
1
2
3
4
8
7
6
5
V
DD
A0
A1
A2
鈥?/div>
Data is read from/written via a 2鈥搘ire serial interface
(open drain I/O lines)
鈥?/div>
Applications include thermostatic controls, industrial
systems, consumer products, thermometers, or any
thermal sensitive system.
DS1621
8鈥揚IN DIP (300 MIL)
See Mech. Drawings
Section
鈥?/div>
8鈥損in DIP or SOIC package
PIN DESCRIPTION
SDA
SCL
GND
T
OUT
A0
A1
A2
V
DD
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
2鈥揥ire Serial Data Input/Output
2鈥揥ire Serial Clock
Ground
Thermostat Output Signal
Chip Address Input
Chip Address Input
Chip Address Input
Power Supply Voltage
DESCRIPTION
The DS1621 digital thermometer and thermostat pro-
vides 9鈥揵it temperature readings which indicate the
temperature of the device. The thermal alarm output,
T
OUT,
is active when the temperature of the device
exceeds a user鈥揹efined temperature TH. The output
remains active until the temperature drops below user
defined temperature TL, allowing for any hysteresis
necessary.
User defined temperature settings are stored in non鈥?/div>
volatile memory, so parts may be programmed prior to
insertion in a system. Temperature settings, and tem-
perature readings are all communicated to/from the
DS1621 over a simple 2鈥搘ire serial interface.
ECopyright
1995 by Dallas Semiconductor Corporation.
All Rights Reserved. For important information regarding
patents and other intellectual property rights, please refer to
Dallas Semiconductor data books.
021497 1/14

DS1621S 產(chǎn)品屬性

  • Lead (SnPb) Finish for COTSObsolescence Mitigation Program

  • 100

  • 集成電路 (IC)

  • PMIC - 熱管理

  • -

  • 溫度計，恒溫計

  • 內(nèi)部

  • -55°C ~ 125°C

  • ±2°C（最小值）

  • I²C?/SMBus?

  • 是

  • 無

  • 2.7 V ~ 5.5 V

  • -55°C ~ 125°C

  • 表面貼裝

  • 8-SOIC（0.154"，3.90mm 寬）

  • 8-SOIC

  • 管件

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