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GX21M15
Public Made by Adomby adom
GXCAS Temperature Sensors, SOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownGX21M15
GXCAS · Temperature Sensors · SOP-8
GX21M15 from GXCAS, in a SOP-8. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | SDA | bidirectional | I2C bus bidirectional data line with open-drain output; if the bus pull-ups do not meet I2C requirements, an external pull-up of about 10 kΩ is needed, and SDA must not float because it has no internal bias. |
| 2 | SCL | input | I2C bus clock input that must be driven by the bus master and must not float because it has no internal bias. |
| 3 | OS | output | Over-temperature protection/interrupt open-drain output that needs an external pull-up (up to 200 kΩ recommended) and has a maximum output sink current of 10 mA. |
| 4 | GND | power_in | Ground, connected to the system ground. |
| 5 | A2 | input | Digital input for user-configured address bit 2, tied to GND (logic 0) or VCC (logic 1) and must not float. |
| 6 | A1 | input | Digital input for user-configured address bit 1, tied to GND (logic 0) or VCC (logic 1) and must not float. |
| 7 | A0 | input | Digital input for user-configured address bit 0, tied to GND (logic 0) or VCC (logic 1) and must not float. |
| 8 | VCC | power_in | Power supply port; operating supply range is 2.8 V to 5.5 V and the absolute maximum rating is 6.0 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | GXCAS |
| Package | SOP-8 |
| Category | Sensors |
| Pins | 8 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Supply voltage (absolute maximum) | VCC | -0.3 | 6 | V | 15 | ||
| Input voltage (absolute maximum) | VI | -0.3 | 6 | V | 在输入端口 | 15 | |
| Input current (absolute maximum) | II | -5 | 5 | mA | 在输入端口 | 15 | |
| Output sink current (absolute maximum) | IO(sink) | 10 | mA | OS 端口 | 15 | ||
| Output voltage (absolute maximum) | VO | -0.3 | 6 | V | OS 端口 | 15 | |
| Storage temperature (absolute maximum) | Tstg | -65 | 150 | C | 15 | ||
| Junction temperature (absolute maximum) | Tj | 150 | C | 15 | |||
| Supply voltage (recommended operating) | VCC | 2.8 | 5.5 | V | 15 | ||
| Ambient temperature (recommended operating) | Tamb | -55 | 125 | C | 15 | ||
| Temperature accuracy | Tacc | -1 | 1 | C | Tamb = 25 C to +100 C | 16 | |
| Temperature accuracy | Tacc | -2 | 2 | C | Tamb = 55 C to +125 C | 16 | |
| Number of faults (programmable) | Nfault | 1 | 6 | 可编程；故障数转换 | 16 | ||
| Input low voltage | VIL | -0.3 | V | 数字引脚 | 16 | ||
| High-level input current | IIH | -1 | 1 | μA | 数字引脚； VI = VCC | 16 | |
| Low-level input current | IIL | -1 | 1 | μA | 数字引脚； VI = 0 V | 16 | |
| Output low voltage (SDA and OS pins) | VOL | 0.4 | V | SDA 和 OS 引脚； IOL = 3 mA | 16 | ||
| Output low voltage (SDA and OS pins) | VOL | 0.8 | V | IOL = 4 mA | 16 | ||
| Output leakage current (SDA and OS pins) | ILO | 10 | μA | SDA 和 OS pins; VOH = VCC | 16 | ||
| Average supply current, I2C bus inactive | IDD(AV) | 80 | 200 | μA | 正常模式: I2C 总线未激活 | 16 | |
| Average supply current, I2C bus active | IDD(AV) | 300 | μA | 正常模式: I2C 总线激活; fSCL = 400 kHz | 16 | ||
| Average supply current, sleep mode | 0.2 | 1 | μA | 睡眠模式 | 16 | ||
| Bus error timeout | tto | 75 | 200 | ms | 18 | ||
| SCL clock frequency | fSCL | 0.02 | 400 | kHz | 见 图 20 | 18 | |
| SCL high period | tHIGH | 0.6 | s | 18 | |||
| SCL low period | tLOW | 1.3 | s | 18 | |||
| START hold (repeated) time | tHD;STA | 100 | ns | 18 | |||
| Data setup time | tSU;DAT | 100 | ns | 18 | |||
| Data hold time | tHD;DAT | 0 | ns | 18 | |||
| STOP setup time | tSU;STO | 100 | ns | 18 | |||
| Input hysteresis voltage (SCL and SDA pins) | VI(hys) | 300 | mV | 16 | |||
| Input hysteresis voltage (A2, A1, A0 pins) | VI(hys) | 150 | mV | 16 | |||
| Temperature resolution | Tres | 0.125 | C | 11-bit 数字数据 | 16 | ||
| Temperature conversion time | tconv(T) | 10 | ms | 正常模式 | 16 | ||
| Conversion period | Tconv | 100 | ms | 正常模式 | 16 | ||
| Overtemperature shutdown threshold (default) | Tth(ots) | 80 | C | 默认值 | 16 | ||
| Hysteresis temperature (default) | Thys | 75 | C | 默认值 | 16 | ||
| Input capacitance (digital pins) | Ci | 20 | pF | 数字引脚 | 16 | ||
| Fall time (SDA and OS output ports) | tf | 250 | ns | CL = 400 pF; IOL = 3 mA | 18 |
CAD (KiCad official)
- Symbol:
GX21M15 - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files:
gx21m15-etched.step/gx21m15-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);gx21m15.step/gx21m15.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: GXCAS datasheet (23 pp, sha256
478f9899d0a06ed6, retrieved 2026-10-18, tier: lcsc) - Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-sonnet-5-5(agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish. - CAD: KiCad official libraries (CC-BY-SA 4.0).