High-Speed, Low-Power, 3V/5V,
Rail-to-Rail Single-Supply Comparators
MAX941/MAX942/MAX944
2.5k
IN+
TO INTERNAL
CIRCUITRY
MAX941
MAX942
MAX944
V
CC
I
SOURCE
MAX941
MAX942
MAX944
OUTPUT
IN–
2.5k
TO INTERNAL
CIRCUITRY
I
SINK
0V
Figure 3. Input Stage Circuitry
Figure 4. Output Stage Circuitry
V
DD
= 3.3V
V+ = 3V
VREFC
SERIAL
DIGITAL
INPUT
SDI
V
DD
10k
COAX LINE
20k
DACOUTC
GND
V
SS
3V
8-BIT DAC
MAX512
MAX941
0V
CLEAN
DIGITAL
SIGNAL
MAX941
20k
ANALOG IN
Figure 5. 3.3V Digitally Controlled Threshold Detector
Figure 6. Line Transceiver Application
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