Datasheet
19-1299; Rev 4; 5/14
MAX976/MAX978/MAX998
Single/Dual/Quad, SOT23, Single-Supply,
High-Speed, Low-Power Comparators
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.
________________General Description
The MAX976/MAX978/MAX998 dual/quad/single, high-
speed, low-power comparators are optimized for
+3V/+5V single-supply applications. They achieve a
20ns propagation delay while consuming only 225µA
supply current per comparator. The MAX998 features a
low-power shutdown mode that places the output in a
high-impedance state and reduces supply current
to 1nA.
The MAX976/MAX978/MAX998 inputs have a common-
mode voltage range that extends 200mV below ground.
Their outputs are capable of rail-to-rail operation with-
out external pullup circuitry, making these devices ideal
for interface with CMOS/TTL logic. All inputs and out-
puts can tolerate a continuous short-circuit fault condi-
tion to either rail. The comparators’ internal hysteresis
ensures clean output switching, even with slow-moving
input signals.
For space-critical applications, the single MAX998 is
available in a 6-pin SOT23 package, the dual MAX976
is available in an 8-pin µMAX
®
package, and the quad
MAX978 is available in a 16-pin QSOP package.
________________________Applications
Battery-Powered Systems
Threshold Detectors/Discriminators
3V Systems
IR Receivers
Digital Line Receivers
____________________________Features
o Single-Supply Operation Down to 2.7V
o 20ns Propagation Delay
o 225µA Supply Current
o 1nA Shutdown Supply Current
o Rail-to-Rail Outputs
o Ground-Sensing Inputs
o Internal Hysteresis Ensures Clean Switching
o Available in Space-Saving Packages
SOT23 (MAX998)
µMAX (MAX976)
QSOP (MAX978)
TOP VIEW
GND
IN-IN+
16V
CC
5 SHDN
OUT
MAX998
SOT23
2
34
+
-
+
PART
PIN-PACKAGE
SOT23
TOP MARK
MAX976ESA+
8 SO —
MAX976EUA+ 8 µMAX —
MAX978ESE+
16 Narrrow SO —
MAX978EEE+ 16 QSOP —
MAX998ESA+
8 SO —
MAX998EUT+T 6 SOT23 AAAO
__________________Pin Configurations
V
CC
V
CC
V
CC
V
CC
R
D
SHDN
R1 R2
IR RECEIVER
OUT
0.1µF
MAX998
V
CC
GND
___________Typical Operating Circuit
_______________Ordering Information
Pin Configurations continued at end of data sheet
µMAX a registered trademark of Maxim Integrated Products, Inc.
Note: All devices are specified over the -40°C to +85°C tem-
perature range.
+ Denotes a lead(Pb)-free/RoHS-compliant package.