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HTCSEMI HT18B20ATZ 1 Wire digital temperature sensor with user programmable alarm and unique 64 bit serial code

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HTCSEMI HT18B20ATZ 1 Wire digital temperature sensor with user programmable alarm and unique 64 bit serial code

Temperature Range : -55℃~+125℃

Interface : Single-bus

Temperature Resolution : 12bit

Voltage - Supply : 3V~5.5V

Description : Temperature Sensor -55℃~+125℃ 12bit TO-92

Mfr. Part # : HT18B20ATZ

Model Number : HT18B20ATZ

Package : TO-92

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Product Overview

The HT18B20A is a programmable resolution 1-Wire digital thermometer compatible with the DS18B20. It offers 9-bit to 12-bit Celsius temperature measurements with a user-programmable alarm function for nonvolatile upper and lower trigger points. Communication is established over a single data line (1-Wire bus), and the device can derive power directly from this line ("parasite power"), eliminating the need for an external power supply. Each HT18B20A features a unique 64-bit serial code, enabling multiple devices on the same bus for distributed temperature monitoring in applications such as HVAC, building environmental controls, equipment monitoring, and process control systems.

Product Attributes

Brand: Not specified
Origin: Not specified
Material: Not specified
Color: Not specified
Certifications: Not specified

Technical Specifications

Parameter	Symbol	Min	Max	Unit	Notes
Supply voltage (from power supply element)	UDD	-0.5	6.0	V
Ambient temperature	Ta	-60	125	C
Supply voltage	UDD	3.0	5.5	V
Supply voltage (on external pull-up resistor) in supply mode on DQ (UDD = 0 V)	UPU	3.0	5.5	V	1, 2
Low level input voltage at UDD = 5 V	UIL	-0.3	0.8	V	1, 3
Low level input voltage at UDD = 3 V	UIL	-0.3	0.5	V	1, 2, 3
High level input voltage in supply mode on VDD pin	UIH	2.2	UDD+0.3	V	1, 4
High level input voltage in supply mode on DQ (UDD = 0 V)	UIH	3.0	UDD+0.3	V	1, 2, 4
Cycle time of EEPROM record	tWR	-	10	ms	2
Operating ambient temperature	Ta	-55	125	C	-
Consumption current	IDD	-	1.0	A	251 C; 0.4 V UI 0.4 V or 1.1 UI UDD-0.3 V
Dynamic Consumption current	IODD	-	1500	A	251 C; UDD = 5 V
Low level output current	IOL	-	4.0	mA	at UO = 0.4 V
Input current (Line driver off, on DQ pin)	IDQ	-	5	A	2510 C; UDD = 5 V
Consumption current	IDD	-	0.75	A	2510 C; 0 V UI 0.4 V or 0.75 UI UDD-0.3 V
Temperature measurement drift	T	0.2	-	C	After 1000 hours at 125 C; UDD = 5.5 V
Temperature measurement error	tERR	0.5	-	C	0 to 85 C
Temperature measurement error	tERR	2.0	-	C	-55 to 125 C

2409291004_HTCSEMI-HT18B20ATZ_C2834477.pdf

HTCSEMI HT18B20ATZ 1 Wire digital temperature sensor with user programmable alarm and unique 64 bit serial code Manufactures

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