MAX976_09 Datasheet, PDF (1/11 Pages) Maxim Integrated Products – Single/Dual/Quad, SOT23, Single-Supply, High-Speed, Low-Power Comparators

19-1299; Rev 3; 3/09
Single/Dual/Quad, SOT23, Single-Supply,
High-Speed, Low-Power Comparators
________________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
___________Typical Operating Circuit
____________________________Features
♦ Single-Supply Operation Down to 2.7V
♦ 20ns Propagation Delay
♦ 225µA Supply Current
♦ 1nA Shutdown Supply Current
♦ Rail-to-Rail Outputs
♦ Ground-Sensing Inputs
♦ Internal Hysteresis Ensures Clean Switching
♦ Available in Space-Saving Packages
SOT23 (MAX998)
µMAX (MAX976)
QSOP (MAX978)
_______________Ordering Information
PART*
PIN-PACKAGE
SOT
TOP MARK
MAX976ESA
8 SO
—
MAX976EUA
8 µMAX
—
MAX978ESE
16 Narrow SO
—
MAX978EEE
16 QSOP
—
MAX998ESA
8 SO
—
MAX998EUT-T
6 SOT23
AAAO
*All devices are specified over the -40°C to +85°C temper-
ature range.
__________________Pin Configurations
V_CC
R_D
R1
V_CC
V_CC
0.1μF
V_CC
OUT
GND _SHDN
V_CC
R2
MAX998
TOP VIEW
OUT 1
MAX998 _{6 VCC}
GND 2
5 SHDN
+-
IN+ 3
4 IN-
SOT23
IR RECEIVER
Pin Configurations continued at end of data sheet
µMAX a registered trademark of Maxim Integrated Products, Inc.
________________________________________________________________ Maxim Integrated Products 1
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