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MAX994
Micropower, Low-Voltage, UCSP/SC70, Rail-to-Rail I/O Comparators
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Key Features
Applications/Uses
Parametric specs for Comparators
| tPD (ns) (typ) | 300 |
| VOS (mV) (max) | 5 |
| VSUPPLY (Total) (V) (min) | 2.5 |
| VSUPPLY (Total) (V) (max) | 5.5 |
| # Comparators | 4 |
| Input Range | Rail to Rail to Neg. Rail |
| ICC per Comp. (µA) (max) | 20 |
| Logic Out | Open Drain |
| Oper. Temp. (°C) | -40 to +85 |
| Package/Pins | SOIC (N)/14 TSSOP/14 |
| Budgetary Price (See Notes) | 2.12 |
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Simplified Block Diagram
Technical Docs
| Data Sheet | Micropower, Low-Voltage, UCSP/SC70, Rail-to-Rail I/O Comparators | Nov 02, 2012 |
Support & Training
Search our knowledge base for answers to your technical questions.
Filtered SearchOur dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .
Parameters
Parametric specs for Comparators
| tPD (ns) (typ) | 300 |
| VOS (mV) (max) | 5 |
| VSUPPLY (Total) (V) (min) | 2.5 |
| VSUPPLY (Total) (V) (max) | 5.5 |
| # Comparators | 4 |
| Input Range | Rail to Rail to Neg. Rail |
| ICC per Comp. (µA) (max) | 20 |
| Logic Out | Open Drain |
| Oper. Temp. (°C) | -40 to +85 |
| Package/Pins | SOIC (N)/14 TSSOP/14 |
| Budgetary Price (See Notes) | 2.12 |
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)
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
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.
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.
Technical Docs
| Data Sheet | Micropower, Low-Voltage, UCSP/SC70, Rail-to-Rail I/O Comparators | Nov 02, 2012 |
Support & Training
Search our knowledge base for answers to your technical questions.
Filtered SearchOur dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .
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