MAX6686AU40L+ Maxim Integrated Products, MAX6686AU40L+ Datasheet

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MAX6686AU40L+

Manufacturer Part Number
MAX6686AU40L+
Description
Board Mount Temperature Sensors Remote-Junction Temperature Switch
Manufacturer
Maxim Integrated Products
Datasheet

Specifications of MAX6686AU40L+

Lead Free Status / Rohs Status
Lead free / RoHS Compliant
MAX6685/MAX6686 are dual-output temperature switches
that use an external diode-connected transistor as a sens-
ing element. These devices have two logic outputs (T
and T
temperature crosses the factory-programmed, +120°C, or
+125°C upper trip threshold. T
remote temperature exceeds the lower threshold, which is
controlled by pins S1 and S2. The lower thresholds are
available in two ranges in 5°C increments. The two ranges
are +40°C to +80°C and +75°C to +115°C. Hysteresis for
both outputs to be deasserted is typically 5°C.
T
MAX6685 and the MAX6686. T
active-high output for the MAX6685 and is an open-drain,
active-low output for the MAX6686. They are available in
a space-saving 8-pin µMAX package.
19-2459; Rev 2; 4/03
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
MAX6685AU40L
MAX6685AU40H
MAX6685AU75L
MAX6685AU75H
MAX6686AU40L
MAX6686AU40H
MAX6686AU75L
MAX6686AU75H
HIGH
CPU Temperature
Protection
Fan Control
LOW
is an open-drain, active-low output for both the
PART
). T
HIGH
________________________________________________________________ Maxim Integrated Products
asserts a logic signal when the remote
CPU
General Description
Open drain, active low
Open drain, active low
Open drain, active low
Open drain, active low
Push-pull, active high
Push-pull, active high
Push-pull, active high
Push-pull, active high
Multichip Modules
FPGA Temperature
Protection
LOW
LOW
C
OUTPUT
S
T
DXP
DXN
S1
S2
LOW
is a CMOS push-pull,
is asserted when the
Applications
MAX6685
3.3V
V
GND
DD
T
T
HIGH
LOW
Dual-Output Remote-Junction
SHUTDOWN
TO SYSTEM
12V
HIGH
N
+40°C to +80°C
+40°C to +80°C
+75°C to +115°C
+75°C to +115°C
+40°C to +80°C
+40°C to +80°C
+75°C to +115°C
+75°C to +115°C
RANGE (0°C)
T
LOW
o Pin-Programmed Lower Temperature Threshold
o Preset Upper Threshold: +120°C or +125°C
o Open-Drain, Active-Low Output for Upper
o CMOS Push-Pull, Active-High or Open-Drain,
o 1.5°C Accuracy
o 3.0V to 5.5V, 200µA Supply
o 8-Pin µMAX Package
Pin Configurations appear at end of data sheet.
CPU
Temperature Switches
TRIP
from +40°C to +80°C or +75°C to +115°C
(5°C Increments)
Temperature Alarm
Active-Low Output for Lower Temperature Alarm
C
S
Typical Operating Circuits
DXN
S1
S2
DXP
THRESHOLD (0°C)
MAX6686
T
V
3.3V
GND
HIGH
DD
+120°C
+125°C
+120°C
+125°C
+120°C
+125°C
+120°C
+125°C
Ordering Information
T
T
HIGH
LOW
TRIP
TO SYSTEM
SHUTDOWN
TO CLOCK
THROTTLE
CONTROL
PIN-PACKAGE
8 µMAX
8 µMAX
8 µMAX
8 µMAX
8 µMAX
8 µMAX
8 µMAX
8 µMAX
Features
1

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MAX6686AU40L+ Summary of contents

Page 1

... Open drain, active low MAX6686AU75H Open drain, active low CPU C S ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. Dual-Output Remote-Junction Temperature Switches o Pin-Programmed Lower Temperature Threshold from +40°C to +80°C or +75°C to +115°C HIGH (5° ...

Page 2

Dual-Output Remote-Junction Temperature Switches ABSOLUTE MAXIMUM RATINGS Voltages Referenced to GND .....................................................-0.3V to +6V DD, LOW HIGH DXN .......................................................................-0.3V to +0.8V All Other Pins..............................................-0. Input Current .........................................................................5mA Output Current ....................................................................20mA Stresses beyond those listed ...

Page 3

C = 2200pF +25°C, unless otherwise noted. See Typical Operating Circuits AVERAGE SUPPLY CURRENT vs. AMBIENT TEMPERATURE 200 180 160 140 120 100 -50 - 100 AMBIENT TEMPERATURE ...

Page 4

Dual-Output Remote-Junction Temperature Switches PIN NAME MAX6685 MAX6686 Power-Supply Input. Bypass to GND with a 0.1µF capacitor GND Ground This pin connects to the positive (anode) terminal of the external P-N sense junction. It ...

Page 5

Table 1. Lower Temperature Trip Threshold Selection S1 GND GND GND FLOAT FLOAT FLOAT Noise-Filtering Capacitors A quality ceramic capacitor must be connected across the DXP/DXN inputs to maintain temperature threshold accuracy by filtering ...

Page 6

Dual-Output Remote-Junction Temperature Switches Pin Configurations TOP VIEW GND GND 2 MAX6685 DXP DXP 3 LOW DXN DXN 4 HIGH MAX 6 _______________________________________________________________________________________ ...

Page 7

... 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 and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 _____________________ 7 © 2003 Maxim Integrated Products ...

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