?Semiconductor Components Industries, LLC, 2012
July, 2012 Rev. 5
1
Publication Order Number:
ADT7484A86A/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
?SPAN class="pst ADT7486AARMZ-RL_2296572_4"> 1 On-Chip Temperature Sensor
?SPAN class="pst ADT7486AARMZ-RL_2296572_4"> 1 or 2 Remote Temperature Sensors
?SPAN class="pst ADT7486AARMZ-RL_2296572_4"> Simple Serial Transport (SST) Interface Rev 1 Compliant
?SPAN class="pst ADT7486AARMZ-RL_2296572_4"> These Devices are Pb-Free and are RoHS Compliant
Applications
?SPAN class="pst ADT7486AARMZ-RL_2296572_4"> Personal Computers
?SPAN class="pst ADT7486AARMZ-RL_2296572_4"> Portable Personal Devices
?SPAN class="pst ADT7486AARMZ-RL_2296572_4"> 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
ADT7484A/
ADT7486A
V
CC
ADD0    ADD1   SST
RESERVED
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
MSOP10
CASE 846AC
SOIC8
CASE 751
T7484A
ALYWG
G
1
8
MSOP8
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
5
4
3
2
1
ADT7484A
(Top View)
MSOP10
SOIC8
MSOP8