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Semiconductor Components Industries, LLC, 2012
July, 2012 − Rev. 5
1 Publication Order Number:
ADT7484A−86A/D
ADT7484A/ADT7486A
Digital Temperature Sensor
with SST Interface
The ADT7484A/ADT7486A are simple digital temperature sensors
for use in PC applications with a Simple Serial Transport (SST)
interface. These devices can monitor their own temperature as well as
the temperature of one (ADT7484A) or two (ADT7486A) remote
sensor diodes. The ADT7484A/ADT7486A are controlled by a single
SST bidirectional data line. The devices are fixed-address SST clients
where the target address is chosen by the state of the two address pins,
ADD0 and ADD1.
Features
1 On-Chip Temperature Sensor
1 or 2 Remote Temperature Sensors
Simple Serial Transport (SST) Interface Rev 1 Compliant
These Devices are Pb-Free and are RoHS Compliant
Applications
Personal Computers
Portable Personal Devices
Industrial Sensor Nets
Figure 1. Functional Block Diagram
GND
D1−
D1+
D2−
D2+
ANALOG
MUX
ON-CHIP
TEMPERATURE
SENSOR
A/D
CONVERTER
LOCAL TEMP
VALUE REGISTER
REMOTE TEMP
VALUE REGISTER
ADDRESS
SELECTION
OFFSET
REGISTERS
SST
INTERFACE
DIGITAL MUX
ADT7484A/
ADT7486A
V
CC
ADD0 ADD1 SSTRESERVED
ADT7486A ONLY
MARKING DIAGRAMS
http://onsemi.com
See detailed ordering and shipping information in the package
dimensions section on page 11 of this data sheet.
ORDERING INFORMATION
MSOP−10
CASE 846AC
SOIC−8
CASE 751
T7484A
ALYWG
G
1
8
MSOP−8
CASE 846AB
PIN ASSIGNMENTS
T22
AYWG
G
1
10
1
8
T20
AYWG
G
T2x = Specific Device Code
A = Assembly Location
Y = Year
W = Work Week
G = Pb-Free Package
(Note: Microdot may be in either location)
T7484A = Specific Device Code
A = Assembly Location
L = Wafer Lot
Y = Year
W = Work Week
G = Pb-Free Package
RESERVED
SST
ADD0
ADD1
V
CC
GND
D1+
D1−
10
9
8
7
6
5
4
3
2
1
ADT7486A
(Top View)
D2+ D2−
RESERVED
SST
ADD0
ADD1
V
CC
GND
D1+
D1−
8
7
6
54
3
2
1
ADT7484A
(Top View)
MSOP−10
SOIC−8
MSOP−8
页面指南
