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MAX6577：SOT Temperature Sensors with Period/Frequency Output

SOT23 Single Wire Digital Temperature Sensors

The MAX6576/MAX6577 are low-cost, low-current temperature sensors with a single-wire output. The MAX6576 converts the ambient temperature into a square wave with a period proportional to absolute temperature (°K). The MAX6577 converts the ambient temperature into a square wave with a frequency proportional to absolute temperature. The MAX6576 offers accuracy of ±3°C at +25°C, ±4.5°C at +85°C, and ±5°C at +125°C. The MAX6577 offers accuracy of ±3°C at +25°C, ±3.5°C at +85°C, and ±4.5°C at +125°C. Both devices feature a single-wire output that minimizes the number of pins necessary to interface with a microprocessor. The period/frequency range of the output square wave can be selected by hard-wiring the two time-select pins (TS0, TS1) to either VDD or GND. The MAX6576/MAX6577 are available in space-saving 6-pin SOT23 packages.

Key Features Simple Single-Wire Output Two Output Types Available Temperature to Period (µs) (MAX6576) Temperature to Frequency (Hz) (MAX6577) ±0.8°C Accuracy at +25°C (±3°C max) No External Components Operates from +2.7V to +5.5V Supply Voltage Low 140µA Typical Supply Current Standard Operating Temperature Range: -40°C to +125°C Small 6-Pin SOT23 Package

MAX6576, MAX6577: Typical Operating Circuit Applications/Uses Battery Packs Cell Phones Critical µP and µC Temperature Monitoring Hard Drives/Tape Drives Medical Equipment Networking and Telecom Equipment Portable Battery-Powered Equipment

DataSheet

Parametrics

Quality and Environmental Data

• MAX6577.pdf

Ordering Information