High-Speed, Low-Power, 3V/5V, Rail-to-Rail,
Single-Supply Comparators
MAX941/MAX942/MAX944
4.1kΩ
IN+
TO INTERNAL
CIRCUITRY
MAX941
MAX942
MAX944
V
CC
I
SOURCE
MAX941
MAX942
MAX944
OUTPUT
IN–
4.1kΩ
TO INTERNAL
CIRCUITRY
I
SINK
0
Figure 3. Input Stage Circuitry
Figure 4. Output Stage Circuitry
V
DD
= 3.3V
V+ = 3V
VREFC
SERIAL
DIGITAL
INPUT
SDI
V
DD
10kΩ
8-BIT DAC
MAX512
COAX LINE
20kΩ
MAX941
3V
0V
CLEAN
DIGITAL
SIGNAL
DACOUTC
GND
V
SS
MAX941
20kΩ
ANALOG IN
Figure 5. 3.3V Digitally Controlled Threshold Detector
Figure 6. Line Transceiver Application
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