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MAX976, MAX978, MAX998
Single/Dual/Quad, SOT23, Single-Supply, High-Speed, Low-Power Comparators
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Status
Active: In Production.
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 pullup circuitry, making these devices ideal for interface with CMOS/TTL logic. All inputs and outputs can tolerate a continuous short-circuit fault condition 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.
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Data Sheet
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Key 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)
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Applications/Uses
- 3V Systems
- Battery-Powered Applications
- Digital-Line Receivers
- IR Receivers
- Threshold Detectors/Discriminators
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Key Specifications:
| Comparators |
| Part Number |
Comp-
arators |
tPD
(ns) |
Input Range |
VSUPPLY (Total)
(V) |
VSUPPLY (Total)
(V) |
ICC per Comp.
(µA) |
VOS
(mV) |
VOS
(mV) |
Logic Out |
Oper. Temp.
(°C) |
Package/Pins |
Smallest Available Pckg.
(mm2) |
Budgetary Price |
| typ |
min |
max |
max |
typ |
max |
max w/pins |
See Notes |
| MAX976 |
2 |
20 |
to Neg. Rail |
2.7 |
5.5 |
650 |
0.2 |
2 |
Push-Pull |
-40 to +85 |
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16.2 |
$2.41 @1k |
| MAX978 |
4 |
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62 |
$3.65 @1k |
| MAX998 |
1 |
|
9 |
$2.00 @1k |
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See All Comparators (80)
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Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.
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Diagram
 Typical Operating Circuit
Notes and Comments
Dual, ground sensing, rail-to-rail output (MAX976)
Quad, ground sensing, rail-to-rail output (MAX978)
Single, ground sensing, rail-to-rail output, with shutdown (MAX998)
More Information
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Information Index
Document Ref.: 19-1299
Rev 3;
2009-03-25
This page last modified: 2009-03-25
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