MC74 ON Semiconductor, MC74 Datasheet

MC74

Manufacturer Part Number

MC74

Description

Manufacturer

ON Semiconductor

Datasheet

1.MC74.pdf (12 pages)

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Download datasheet (126Kb)

MC74

Serial Digital

Temperature Sensor

applications. Temperature data is converted from the integrated thermal

sensing element and made available as an 8–bit serial digital word.

Communication with the MC74 is accomplished via 2–wire

SMBus/I

Conversion rate is a nominal 8 samples/sec. Power consumption is

only 200 A (5 A Standby).

Features

Typical Applications

February, 2000 – Rev. 0

The MC74 is a serial digital temperature sensor suited for low cost

Tested Operating Temperature Range: –40 C to +125 C

Simple Serial Port Interface

Solid State Temperature Sensing:

3.3V and 5.5V Versions

Thermal Protection for Hard Disk Drives and Other PC Peripherals

Low–Cost Thermostat Controls

Power Supplies

Semiconductor Components Industries, LLC, 1999

C–compatible serial port. Temperature resolution is 1 C.

2 C Accuracy from +25 C to +85 C

3 C Accuracy from 0 C to +125 C

Internal Sensor

Temperature

(Diode)

Modulator

FUNCTIONAL BLOCK DIAGRAM

Serial Port

Interface

Control

Logic

SDA

SCL

MC74A5–33SNTR

MC74A5–50T

NOTE: *SOT–23–5 is equivalent to EIAJ–SC74A

Device

ORDERING INFORMATION

PRELIMINARY INFORMATION

GND

V DD

PIN CONFIGURATION

http://onsemi.com

SOT–23–5*

SN SUFFIX

(Top View)

CASE TBD

SOT–23–5

TO–220–5

T SUFFIX

SOT–23–5

TO–220–5

Package

Publication Order Number:

SDA

SCL

3.3V V DD

5.0V V DD

Voltage

MC74/D

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