Rainbow Electronics MAX6575H - Manual

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General Description
The MAX6575L/H is a low-cost, low-current temperature
sensor with a single-wire digital interface. It features
accuracy of ±3°C at +25°C, ±4.5°C at +85°C, and ±5°C
at +125°C. The MAX6575L/H is a monostable, externally
triggered temperature sensor that allows a microproces-
sor (µP) to interface with up to eight temperature sen-
sors using a single control line. Temperatures are
sensed by measuring the time delay between the falling
edge of the external triggering pulse and the falling
edge of the subsequent pulse delays reported from the
devices. Different sensors on the same I/O line use dif-
ferent timeout multipliers to avoid overlapping signals.
The MAX6575L/H features eight different timeout multi-
pliers; these are selectable by using the two time-select
pins on each device and choosing the “L” or “H” ver-
sion. The “L” version provides four delay ranges less
than 50ms. The “H” version provides four delay ranges
greater than 50ms. The MAX6575L/H is available in a
space-saving 6-pin SOT23 package.
Applications
Critical µP and µC Temperature Monitoring
Portable Battery-Powered Equipment
Cell Phones
Battery Packs
Hard Drives/Tape Drives
Networking and Telecom Equipment
Medical Equipment
Automotive
Features
♦ Simple Single-Wire Interface to µP or µC
♦ Multidrop up to Eight Sensors on One Wire
♦ ±0.8°C Accuracy at +25°C (±3°C max)
♦ Operates from +2.7V to +5.5V Supply Voltage
♦ Low 150µA (typ) Supply Current
♦ Standard Operating Temperature Range:
-40°C to +125°C
♦ Small 6-Pin SOT23 Package
MAX6575L/H
SOT Temperature Sensor with
Multidrop Single-Wire Digital Interface
________________________________________________________________ Maxim Integrated Products 1
19-1485; Rev 0; 4/99
PART
MAX6575LZUT -40°C to +125°C
TEMP. RANGE
PIN-
PACKAGE
6 SOT23
Ordering Information
Selector Guide
SOT
TOP MARK
AABG
MAX6575HZUT AABH -40°C to +125°C 6 SOT23
TIMEOUT MULTIPLIERS
(µs/°K)
MAX6575L 5, 20, 40, 80
MAX6575H 160, 320, 480, 640
PART
Pin Configurations appear at end of data sheet.
GND TS0
TS1
I/O
0.1 µ F
0.1 µ F V DD
MAX6575L
CHIP #1 CHIP #8
10k
+2.7V TO +5.5V
GND TS0
TS1
I/O
0.1 µ F V DD
MAX6575H
µ P
I/O
GND
V CC
V CC
Typical Operating Circuit