MAX993:Micropower, Low-Voltage, UCSP/SC70, Rail-to-Rail I/O Comparators

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.

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)
MAX985, MAX986, MAX989, MAX990, MAX993, MAX994: Typical Operating Circuit
MAX985, MAX986, MAX989, MAX990, MAX993, MAX994: Typical Operating Circuit
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
DataSheet
titleDownload file
MAX985-MAX994 Data SheetMAX985-MAX994.pdf
Parametrics
Part NumberComp-
arators
tPD
(ns)
Input RangeVSUPPLY (Total)
(V)
VSUPPLY (Total)
(V)
ICC per Comp.
(µA)
VOS
(mV)
VOS
(mV)
Logic OutOper. Temp.
(°C)
Package/PinsBudgetary
Price
typminmaxmaxtypmaxSee Notes
MAX9851300Rail to Rail
to Neg. Rail
2.55.5200.55Push-Pull-40 to +85SC-70/5
SOIC(N)/8
SOT/5
UCSP/6
$0.55 @1k
MAX9861Open DrainSC-70/5
SOIC(N)/8
SOT/5
$0.80 @1k
MAX9892Push-PullµMAX/8
SOIC(N)/8
SOT/8
$1.15 @1k
MAX9902Open DrainµMAX/8
SOIC(N)/8
SOT/8
$1.12 @1k
MAX9934Push-PullSOIC(N)/14
TSSOP/14
$2.07 @1k
MAX9944Open DrainSOIC(N)/14
TSSOP/14
$1.90 @1k
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX993ESDNo Longer AvailableMAX993ESD+SOIC(N),;14 pin;54.2 mm²-40°C to +85°CNo
MAX993ESD+ActiveSOIC(N),;14 pin;54.2 mm²-40°C to +85°CLead Free
MAX993ESD+TActiveSOIC(N),;14 pin;54.2 mm²-40°C to +85°CLead Free
MAX993ESD-TNo Longer AvailableMAX993ESD+TN.SO;14 pin-40°C to +85°CSee data sheet
MAX993EUDNo Longer AvailableMAX993EUD+TSSOP,;14 pin;33.4 mm²-40°C to +85°CNo
MAX993EUD+ActiveTSSOP,;14 pin;33.4 mm²-40°C to +85°CLead Free
MAX993EUD+TActiveTSSOP,;14 pin;33.4 mm²-40°C to +85°CLead Free
MAX993EUD-TNo Longer AvailableMAX993EUD+TTSSOP;14 pin-40°C to +85°CSee data sheet
MAX993EUD/GG8ActiveTSSOP,;14 pin;33.4 mm²-40°C to +85°CNo
MAX985-MAX994.pdf MAX994
MAX985-MAX994.pdf MAX994