MAX6575H MAXIM [Maxim Integrated Products], MAX6575H Datasheet

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MAX6575H

Manufacturer Part Number
MAX6575H
Description
SOT Temperature Sensor with Multidrop Single-Wire Digital Interface
Manufacturer
MAXIM [Maxim Integrated Products]
Datasheet

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MAX6575HZUT+T
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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.
19-1485; Rev 0; 4/99
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.
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
0.1 F
V
CC
________________________________________________________________ Maxim Integrated Products
V
GND
CC
P
Multidrop Single-Wire Digital Interface
General Description
I/O
10k
Applications
0.1 F
SOT Temperature Sensor with
TS1
TS0
MAX6575L
CHIP #1
V
I/O
DD
GND
Pin Configurations appear at end of data sheet.
MAX6575LZUT
MAX6575HZUT
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
PART
MAX6575H
MAX6575L
PART
0.1 F
Typical Operating Circuit
-40°C to +125°C
-40°C to +125°C
TEMP. RANGE
TS0
TS1
Ordering Information
MAX6575H
CHIP #8
V
I/O
DD
TIMEOUT MULTIPLIERS
GND
Selector Guide
160, 320, 480, 640
6 SOT23
6 SOT23
PACKAGE
5, 20, 40, 80
(µs/°K)
PIN-
+2.7V TO +5.5V
Features
TOP MARK
AABG
AABH
SOT
1

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MAX6575H Summary of contents

Page 1

... Ordering Information PIN- TEMP. RANGE PACKAGE -40°C to +125°C 6 SOT23 -40°C to +125°C 6 SOT23 Selector Guide TIMEOUT MULTIPLIERS (µs/°K) 5, 20, 40, 80 160, 320, 480, 640 Typical Operating Circuit +2.7V TO +5.5V 0 MAX6575H TS1 CHIP #8 TS0 GND I/O SOT TOP MARK AABG AABH 1 ...

Page 2

... V = GND TS1 TS0 T (temp) in ° GND TS1 DD TS0 Figure TS1 DD TS0 GND GND TS1 TS0 MAX6575H GND TS1 TS0 T (temp) in ° GND TS1 DD TS0 Figure TS1 DD TS0 DD Figure 1 Figure 1 Figure 1 Figure +25°C ...

Page 3

Multidrop Single-Wire Digital Interface (V = +5V +25°C, unless otherwise noted TEMPERATURE ACCURACY (T = +25° SAMPLE SIZE = 200 ...

Page 4

... T(° CHIP# 1 CHIP# 2 RESPONSE RESPONSE READY TIMEOUT MULTIPLIERS (µs/°K) TS0 MAX6575L MAX6575H GND 5 160 V 20 320 DD GND 40 480 V 80 640 DD (µs) / timeout multiplier(µs/°K)] - 273.15°K CHIP# 3 CHIP# 4 RESPONSE RESPONSE t L4 ...

Page 5

... Electrical Characteristics table. MAX6575H 160 320 480 >165 >165 >165 >165 >165 >165 >165 >165 >165 153.5 >165 >165 >165 >165 70.2 MAX6575H 160 320 480 ±0.091 ±0.063 ±0.043 Noise Considerations 640 >165 >165 >165 >165 >165 >165 37.9 640 ±0.037 5 ...

Page 6

SOT Temperature Sensor with Multidrop Single-Wire Digital Interface +2.7V TO +5. MAX6575L TS1 I/O 40 s/°K T1 TS0 GND Figure 2. Interfacing Multiple Devices with a Microcontroller Interfacing Multiple Devices with a Microcontroller Figure 2 shows how to ...

Page 7

Multidrop Single-Wire Digital Interface Listing 1. 8051 Code Example _______________________________________________________________________________________ SOT Temperature Sensor with 7 ...

Page 8

SOT Temperature Sensor with Multidrop Single-Wire Digital Interface Listing 1. 8051 Code Example (continued) 8 _______________________________________________________________________________________ ...

Page 9

... Multidrop Single-Wire Digital Interface Listing 1. 8051 Code Example (continued) Pin Configuration TOP VIEW MAX6575L GND 2 MAX6575H N.C. 3 SOT23-6 _______________________________________________________________________________________ SOT Temperature Sensor with TRANSISTOR COUNT: 302 6 I/O 5 TS1 4 TS0 Chip Information 9 ...

Page 10

SOT Temperature Sensor with Multidrop Single-Wire Digital Interface 10 ______________________________________________________________________________________ Package Information ...

Page 11

SOT Temperature Sensor with Multidrop Single-Wire Digital Interface ______________________________________________________________________________________ NOTES 11 ...

Page 12

SOT Temperature Sensor with Multidrop Single-Wire Digital Interface Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry ...

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