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Programmable resolution digital thermometer GXCAS GX18B20SH with single bus communication and wide temperature range

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Programmable resolution digital thermometer GXCAS GX18B20SH with single bus communication and wide temperature range

Temperature Range : -55℃~+125℃

standby current : 1uA

Interface : Single-bus

Temperature Conversion Time : 400ms

Temperature Resolution : 12bit

Voltage - Supply : 2.5V~5.5V

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

Mfr. Part # : GX18B20SH

Model Number : GX18B20SH

Package : TO-92S

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GX18B20SH Programmable Resolution Single-Bus Temperature Sensor

The GX18B20SH digital thermometer offers 9 to 12-bit programmable resolution temperature measurements with programmable non-volatile memory for upper and lower alarm limits. It communicates via a single-bus protocol, requiring only one signal and one ground wire. The temperature measurement range is -55C to +125C, with accuracy exceeding 0.1C between 35C and +45C. It can also operate in parasitic mode, powered directly through the signal line, eliminating the need for an external power supply. Each GX18B20SH has a unique 64-bit serial number, allowing multiple sensors to be networked on the same bus, controlled by a single processor. This networking capability is ideal for HVAC, building and equipment monitoring, grain temperature measurement, industrial temperature sensing, and process monitoring.

Product Attributes

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

Technical Specifications

Feature	Specification
Interface	Single-bus interface, requires one port pin
Unique Identifier	Global unique 64-bit serial number per chip
Temperature Measurement Range	-55C to +125C (-67F to +257F)
Accuracy	0.1C within 35C to 45C
Temperature Resolution	9-12 bits, selectable
Temperature Conversion Speed	<400ms at 12-bit resolution
Power Supply Voltage Range	2.5V to 5.5V (via data line in parasitic mode)
Alarm Functionality	User-definable non-volatile temperature alarm settings; Alarm search command identifies devices exceeding set temperatures
ESD Protection	HBM 8000V, MM 800V
Package	3-pin TO-92S
Operating Modes	External power supply or parasitic power mode
Default Power-on State	Temperature register defaults to +85C
CRC Generator	CRC = X^8 + X^5 + X^4 + 1
Bus System	Single-wire bus, requires pull-up resistor; idle state is high; reset if bus is low for >480s
Memory Structure	Scratchpad (SRAM) and non-volatile EEPROM for TH, TL, and Configuration registers
Configuration Register	Bits R0 and R1 set resolution (9-12 bits); default is 12 bits (R0=1, R1=1)
Application Scenarios	Thermometers, industrial temperature measurement, HVAC, building/equipment monitoring, grain temperature measurement, process monitoring

2504101957_GXCAS-GX18B20SH_C516772.pdf

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