MAX6576/MAX6577
SOT Temperature Sensors with
Period/Frequency Output
General Description
Features
● Simple Single-Wire Output
The MAX6576/MAX6577 are low-cost, low-current tem-
perature sensors with a single-wire output. The MAX6576
converts the ambient temperature into a square wave with
a period proportional to absolute temperature (°K). The
MAX6577 converts the ambient temperature into a square
wave with a frequency proportional to absolute tempera-
ture. The MAX6576 offers accuracy of ±3°C at +25°C,
±4.5°C at +85°C, and ±5°C at +125°C. The MAX6577
offers accuracy of ±3°C at +25°C, ±3.5°C at +85°C, and
±4.5°C at +125°C.
● Two Output Types Available
• Temperature to Period (μs) (MAX6576)
• Temperature to Frequency (Hz) (MAX6577)
● ±0.8°C Accuracy at +25°C (±3°C max)
● No External Components
● Operates from +2.7V to +5.5V Supply Voltage
● Low 140μA Typical Supply Current
● Standard Operating Temperature Range:
Both devices feature a single-wire output that minimizes
the number of pins necessary to interface with a micropro-
cessor. The period/frequency range of the output square
wave can be selected by hard-wiring the two time-select
-40°C to +125°C
● Small 6-Pin SOT23 Package
pins (TS0, TS1) to either V
or GND. The MAX6576/
DD
MAX6577 are available in space-saving 6-pin SOT23
packages.
Ordering Information
Applications
PIN-
PACKAGE
SOT TOP
MARK
● Critical μP and μC Temperature Monitoring
● Portable Battery-Powered Equipment
● Cell Phones
PART
TEMP. RANGE
MAX6576ZUT -40°C to +125°C 6 SOT23
MAX6577ZUT -40°C to +125°C 6 SOT23
AABI
● Battery Packs
AABJ
● Hard Drives/Tape Drives
● Networking and Telecom Equipment
● Medical Equipment
Pin Configuration
Typical Operating Circuit
TOP VIEW
+2.7V TO +5.5V
0.1µF
0.1µF
V
V
CC
DD
V
1
2
3
6
5
4
OUT
TS1
TS0
DD
MAX6576
MAX6577
µP
I/O
MAX6576
MAX6577
GND
N.C.
TS1
TS0
GND
GND
OUT
SOT23-6
19-1484; Rev 1; 10/14