MY18 Series Digital Temperature Sensors

Product Overview
The MY18E20, MY1820, MY18B20Z, and MY18B20L are digital analog mixed-signal temperature sensing chips offering high accuracy without user calibration. Leveraging CMOS semiconductor PN junction temperature and bandgap voltage characteristics, these chips provide precise temperature measurements with advantages including high accuracy, good consistency, low power consumption, flexible programmable configuration, and long lifespan. They feature a built-in 14-bit ADC with a resolution of 0.0125C (default 12-bit ADC, 0.0625C resolution) and an operating range of -55C to +125C. Each chip is 100% tested and calibrated at the factory. The digital single-bus protocol simplifies system integration, requiring only one GPIO port for communication. This protocol enables cost-effective multi-node sensing and networking, supporting up to 100 nodes in a series network spanning 100 to 500 meters. The chips include non-volatile E2PROM for storing ID, alarm thresholds, calibration values, and user-defined information. Available in TO-92, TO92S, SOP8, and TO-92L packages, with the TO-92L offering ESD protection up to 15000V.

Product Attributes

• Brand: mysentech
• Communication Protocol: Single-Bus (1-Wire)

Technical Specifications

Key Features

• Temperature Measurement Accuracy: 0.5 (typical, -10C to +85C)
• Temperature Measurement Range: -55C to +125C
• Low Power Consumption: 0.2A standby current @ 5V, 5A average current @ 1Hz
• Wide Operating Voltage: 1.8V - 5.5V
• Temperature Resolution: 12-bit ADC (0.0625C), configurable to 14-bit (0.0125C)
• Configurable Temperature Conversion Time: 500ms / 15ms
• 80-bit additional E2PROM for user information
• Unique 64-bit ID for multi-point networking
• User-configurable alarm thresholds
• Standard single-bus interface for distributed multi-node sensing

Applications

• Industrial Monitoring
• Smart Hardware
• Smart Agriculture
• Instrumentation
• Smart Home Appliances
• Multi-point Series Temperature Measurement

Pin Descriptions

MY18E20 (TO-92)

• Pin 1: GND (Ground)
• Pin 2: DQ (Single-Bus Digital Interface)
• Pin 3: VDD (Power Supply)

MY1820 (TO92S)

• Pin 1: GND (Ground)
• Pin 2: DQ (Single-Bus Digital Interface)
• Pin 3: VDD (Power Supply)

MY18B20Z (SOP8)

• Pins 1, 2, 3, 5, 6, 7: NC (Not Connected)
• Pin 4: DQ (Single-Bus Digital Interface)
• Pin 8: VDD (Power Supply)

MY18B20L (TO-92L)

• Pin 1, 2, 6, 7, 8: NC (Not Connected)
• Pin 3: VDD (Power Supply)
• Pin 4: DQ (Single-Bus Digital Interface)
• Pin 5: GND (Ground)

Electrical Characteristics

Ordering Information