MAX6675ISA+ vs MAX31855KASA+ Comparison
Detailed side-by-side comparison of MAX6675ISA+ by Maxim Integrated and MAX31855KASA+ by Analog Devices. Compare key specifications, electrical parameters, packaging, lifecycle status, pricing, and availability to determine the best component for your design requirements.
Maxim Integrated
MAX6675ISA+ - K-Thermocouple-to-Digital, 0-1024°C, SPI | Maxim
MAX6675ISA+ ✓ ActiveAnalog Devices
MAX31855KASA+ - K-Type Thermocouple-to-Digital Converter | Maxim Integrated
MAX31855KASA+ ✓ ActiveSpecification Comparison
| Parameter | MAX6675ISA+ | MAX31855KASA+ |
|---|---|---|
| Brand | Maxim Integrated | Analog Devices |
| Category | Temperature Sensors | Temperature Sensors |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $6.55 | $4.20 |
| Function | Thermocouple-to-Digital Converter (Type-K) | Thermocouple-to-Digital Converter with Cold-Junction Compensation |
| Thermocouple Type | K-Type | — |
| Temperature Range | 0 °C to +1024 °C | — |
| Resolution | 0.25 °C (12-bit) | — |
| Thermocouple Accuracy | 8 LSB (0°C to +700°C) | plus/minus 2 degC |
| Supply Voltage | 3.0 V to 5.5 V | — |
| Supply Current (typical) | 1.5 mA | — |
| Interface | SPI-compatible (read-only, 3-wire) | — |
| Cold-Junction Compensation | Built-in | On-chip, integrated |
| Conversion Method | On-demand, single per CS cycle | — |
| Thermocouple Disconnect Detection | Yes (via pull-up) | — |
| Operating Temperature (device) | -20 °C to +85 °C | — |
| Package | 8-pin SOIC (ISA / SO-8) | 8-pin SOIC (NSOIC), 3.90 mm body |
| Mounting Type | Surface Mount | Surface Mount |
| RoHS Status | Compliant | Compliant (per distributor listing) |
| MSL Level | 1 (unlimited floor life) | [DATA_NEEDED: MSL rating] |
| Supported Thermocouple Type | — | K (K-type probe input) |
| Output Resolution | — | 14-bit signed (0.25 degC per LSB) |
| Output Interface | — | SPI-compatible, read-only |
| Thermocouple Temperature Range | — | -270 degC to +1800 degC |
| Open-Thermocouple Detection | — | Yes (fault register) |
| Supply Voltage (VDD) | — | 3.0 V to 3.6 V (2.7 V min per datasheet) |
| Supply Current | — | [DATA_NEEDED: typical operating current] |
| Operating Temperature | — | -40 degC to +125 degC |