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MAX985, MAX986, MAX989, MAX990, MAX993, MAX994
Micropower, Low-Voltage, UCSP/SC70, Rail-to-Rail I/O Comparators
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Status
| Part Number |
Status |
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MAX985
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Active: In Production. See Ordering Information for details. |
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MAX986
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Active: In Production. |
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MAX989
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Active: In Production. |
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MAX990
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Active: In Production. |
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MAX993
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Active: In Production. |
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MAX994
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Active: In Production. |
Description
The MAX985/MAX986/MAX989/MAX990/MAX993/MAX994 single/dual/quad micropower comparators feature low-voltage operation and rail-to-rail inputs and
outputs. Their operating voltages range from 2.5V to
5.5V, making them ideal for both 3V and 5V systems.
These comparators also operate with ±1.25V to ±2.75V
dual supplies. They consume only 11µA of supply current
while achieving a 300ns propagation delay.
Input bias current is typically 1.0pA, and input offset
voltage is typically 0.5mV. Internal hysteresis ensures
clean output switching, even with slow-moving input
signals.
The output stage's unique design limits supply-current
surges while switching, virtually eliminating the supply
glitches typical of many other comparators. The
MAX985/MAX989/MAX993 have a push-pull output
stage that sinks as well as sources current. Large internal
output drivers allow rail-to-rail output swing with
loads up to 8mA. The MAX986/MAX990/MAX994 have
an open-drain output stage that can be pulled beyond
VCC to 6V (max) above VEE. These open-drain versions
are ideal for level translators and bipolar to single-ended
converters.
The single MAX985 is available in a chip-scale package
(UCSP™), significantly reducing the required PC
board area. The single MAX985/MAX986 are available
in 5-pin SC70 packages and the dual MAX989/MAX990
are available in 8-pin SOT23 packages.
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Data Sheet
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Key Features
- 11µA Quiescent Supply Current
- 2.5V to 5.5V Single-Supply Operation
- Common-Mode Input Voltage Range Extends 250mV Beyond the Rails
- 300ns Propagation Delay
- Push-Pull Output Stage Sinks and Sources 8mA Current (MAX985/MAX989/MAX993)
- Open-Drain Output Voltage Extends Beyond VCC
(MAX986/MAX990/MAX994)
- Unique Output Stage Reduces Output Switching Current, Minimizing Overall Power Consumption
- 80µA Supply Current at 1MHz Switching Frequency
- No Phase Reversal for Overdriven Inputs
- Available in Space-Saving Packages:
- UCSP (MAX985)
- SOT23 (MAX985/MAX986/MAX989/MAX990)
- µMAX® (MAX989/MAX990)
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Applications/Uses
- Digital-Line Receivers
- Ground/Supply Sensing
- IR Receivers
- Level Translators
- Mobile Communications
- Portable Battery-Powered Systems
- Threshold Detectors
- Window Comparators
- Zero-Crossing Detectors
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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 |
| MAX985 |
1 |
300 |
|
2.5 |
5.5 |
20 |
0.5 |
5 |
Push-Pull |
-40 to +85 |
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1.8 |
$0.49 @1k |
| MAX986 |
1 |
Open Drain |
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5.3 |
$0.77 @1k |
| MAX989 |
2 |
Push-Pull |
|
9 |
$1.14 @1k |
| MAX990 |
2 |
Open Drain |
|
9 |
$1.14 @1k |
| MAX993 |
4 |
Push-Pull |
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33.4 |
$1.70 @1k |
| MAX994 |
4 |
Open Drain |
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33.4 |
$1.70 @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
Micropower, low voltage, Rail-to-Rail I/O, P/P (MAX985)
Micropower, low voltage, Rail-to-Rail I/O, O/D (MAX986)
Micropower, low voltage, Rail-to-Rail I/O, P/P (MAX989)
Micropower, low voltage, Rail-to-Rail I/O, O/D (MAX990)
Micropower, low voltage, Rail-to-Rail I/O, P/P (MAX993)
Micropower, low voltage, Rail-to-Rail I/O, O/D (MAX994)
More Information
Didn't Find What You Need?
Information Index
Document Ref.: 19-1229
Rev 4;
2007-02-19
This page last modified: 2008-03-13
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