Datasheet

MAX975/MAX977
Single/Dual, +3V/+5V Dual-Speed
Comparators with Auto-Standby
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= +2.7V to +5.25V, specifications are for high-speed mode, T
A
= -40°C to +85°C, unless otherwise noted. Typical values are at
T
A
= +25°C.) (Note 1)
C
LOAD
= 10pF,
V
CC
= 5V
I
SINK
= 2mA, all modes
High-speed mode,
overdrive = 5mV
Low-power mode,
overdrive = 10mV
I
SOURCE
= 2mA, all modes
CONDITIONS
µs0.82 1.6
ns28 50
t
PD+
Propagation Delay, Low to High
(Note 6)
V0.1 0.4V
OL
OUT_ Output Voltage Low
V0.7xV
CC
V
CC
/2V
LPIH
LP Input Voltage High
VV
CC
- 0.4 V
CC
- 0.1V
OH
OUT_ Output Voltage High
UNITSMIN TYP MAXSYMBOLPARAMETER
VV
CC
/ 2 0.3 x V
CC
V
LPIL
LP Input Voltage Low
µA
(Note 5)
0.01 ±1I
LPB
LP Input Current
µs10t
LP
LP Fall Time
V
CC
= 3V µA0.15I
STO
STO_ Source Current
VV
CC
/ 2 0.3 x V
CC
V
CIL
STO_ Input Voltage Low
C
LOAD
= 10pF,
V
CC
= 5V
High-speed mode,
overdrive = 5mV
Low-power mode,
overdrive = 10mV
µs0.48 1.6
ns28 50
t
PD-
Propagation Delay, High to Low
(Note 6)
C
LOAD
= 10pF ns2t
SKEW
Propagation-Delay Skew (Note 6)
MAX977 only, C
LOAD
= 10pF ns1
∆t
PD
Propagation-Delay Matching
C
LOAD
= 10pF,
V
CC
= 5.0V
High-speed mode
Low-power mode 1.6
ns
1.6
Rise/Fall Time
I
SOURCE
= 3mA, all modes VV
CC
- 0.4V
SH
STAT_ Output Voltage High
I
SINK
= 400µA, all modes V0.4V
SL
STAT_ Output Voltage Low
DIGITAL INPUTS
DIGITAL OUTPUTS
Note 1: The MAX975EUA is 100% production tested at T
A
= +25°C; all temperature specifications are guaranteed by design.
Note 2: Inferred by CMRR. Either input can be driven to the absolute maximum limit without false output inversion, as long as the
other input is within the specified common-mode input voltage range.
Note 3: V
OS
is defined as the mean of trip points. The trip points are the extremities of the differential input voltage required to make
the comparator output change state (Figure 1).
Note 4: The difference between the upper and lower trip points is equal to the width of the input-referred hysteresis zone (Figure 1).
Note 5: Guaranteed by design. The LP pin is sensitive to noise. If fall times larger than 10µs are expected, bypass LP to ground
using a 0.1µF capacitor.
Note 6: Propagation delay is guaranteed by design. For low-overdrive conditions, V
OS
is added to the overdrive. The following
equation defines propagation-delay skew: t
SKEW
= t
PD+
- t
PD-.