Rainbow Electronics MAX998 - Manual

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________________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
without external pull-up circuitry, making these devices
ideal for interface with CMOS/TTL logic. All inputs and
outputs can tolerate a continuous short-circuit fault con-
dition 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
♦ 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:
SOT23-6 (MAX998)
µMAX (MAX976)
QSOP-16 (MAX978)
MAX976/MAX978/MAX998
Single/Dual/Quad, SOT23, Single-Supply,
High-Speed, Low-Power Comparators
________________________________________________________________ Maxim Integrated Products 1
TOP VIEW
GND
IN- IN+
1 6 V CC
5 SHDN
OUT
MAX998
SOT23-6
2
3 4
+ -
__________________Pin Configurations
V CC
V CC
V CC
V CC
R
D
SHDN
R1 R2
IR RECEIVER
OUT
0.1 µ F
MAX998
V CC
GND
___________Typical Operating Circuit
19-1299; Rev 1; 1/98
PART
MAX976 ESA
MAX976EUA
MAX978 ESE -40°C to +85°C
-40°C to +85°C
-40°C to +85°C
TEMP. RANGE PIN-PACKAGE
8 SO
8 µMAX
16 Narrow SO
_______________Ordering Information
Pin Configurations continued at end of data sheet
Rail-to-Rail is a registered trademark of Nippon Motorola Ltd.
MAX978EEE
MAX998 ESA
MAX998EUT-T -40°C to +85°C
-40°C to +85°C
-40°C to +85°C 16 QSOP
8 SO
6 SOT23-6
SOT
TOP MARK
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