MAX963 Maxim, MAX963 Datasheet - Page 9

• Manufacturer Part Number: MAX963
• Description: The MAX961–MAX964/MAX997/MAX999 are low-power, ultra-high-speed comparators with internal hysteresis
• Manufacturer: Maxim

Figure 2. MAX961/MAX963 Timing Diagram
Figure 3. Input Stage Circuitry
IN+
IN-
Single/Dual/Quad, Ultra-High-Speed, +3V/+5V,
200
200
DIFFERENTIAL
_______________________________________________________________________________________
VOLTAGE
INPUT
LE
Q
Q
V
V
V
V
TO INTERNAL
CIRCUITRY
TO INTERNAL
CIRCUITRY
OS
CC
0V
OH
OL
V
V
V
CC
2
CC
2
CC
2
MAX961-MAX964
MAX997
MAX999
t
SU
Beyond-the-Rails Comparators
t
H
t
SKEW
t
PD
For a large differential input voltage (exceeding 3V
this protection circuitry increases the input bias current
at IN+ (source) and IN- (sink).
Input currents with large differential input voltages
should not be confused with input bias currents (I
As long as the differential input voltage is less than
3V
The input circuitry allows the MAX961–MAX964/
MAX997/MAX999’s input common-mode range to
extend 100mV beyond both power-supply rails. The
output remains in the correct logic state if one or both
inputs are within the common-mode range. Taking
either input outside the common-mode range causes
the input to saturate and the propagation delay to
increase.
F
, this input current is less than 2I
Input current = ————————
t
t
SKEW
LPW
t
LPD
(IN+ - IN-) - 3V
2 x 200
F
B
.
B
F
9
).
),