NCT175DMR2G ON Semiconductor

NCT175 Industry Standard Digital Temperature Sensor with 2wire Interface The NCT175 is a two-wire serially programmable temperature sensor with an over-temperature/interrupt output pin to signal out of NCT175 8 V DD 1 SDA 2 SCL REGISTERS TWO-WIRE CONFIGURATION T 5 HYST INTERFACE A2 3 6 TEMPERATURE T OS A1 7 ONE-SHOT A0 OS/ALERT DELTA-SIGMA CONTROL ADC LOGIC 4 GND Figure 1. Simplified Block Diagram V 3.0 V To 5.5 V DD C BYPASS 5 A2 6 ADDRESS A1 (SET AS DESIRED) 1 7 SDA A0 NCT175 SERIAL INTERFACE 2 SCL 3 OS/ALERT NOTE: SDA, SCL AND OS/ALERT PINS REQUIRE PULL-UP RESISTORS TO V DD 4 GND Figure 2. Typical Application Circuit Table 1. PIN FUNCTION DESCRIPTION Pin No. Pin Name Description 2 1 SDA SMBus/I C Serial Bi-directional Data Input/Output. Open-drain pin needs a pull-up resistor. 2 SCL Serial Clock Input. Open-drain pin needs a pull-up resistor. 3 OS/ALERT Over-temperature Indicator. Open-drain output needs a pullup resistor. Active Low output. 4 GND Power Supply Ground. 2 2 5 A2 SMBus/I C Serial Bus Address Selection Pin. Connect to GND or V to set the desired I C address. DD 2 2 6 A1 SMBus/I C Serial Bus Address Selection Pin. Connect to GND or V to set the desired I C address. DD 2 2 7 A0 SMBus/I C Serial Bus Address Selection Pin. Connect to GND or V to set the desired I C address. DD 8 V Positive Supply Voltage, 3.0 V to 5.5 V. Bypass to ground with a 0.1 F bypass capacitor. DD