MAX944:High-Speed, Low-Power, 3V/5V, Rail-to-Rail, Single-Supply Comparators

The MAX941/MAX942/MAX944 are single/dual/quad high-speed comparators optimized for systems powered from a 3V or 5V supply. These devices combine high speed, low power, and rail-to-rail inputs. Propagation delay is 80ns, while supply current is only 350µA per comparator. The input common-mode range of the MAX941/MAX942/MAX944 extends beyond both power-supply rails. The outputs pull to within 0.4V of either supply rail without external pullup circuitry, making these devices ideal for interface with both CMOS and TTL logic. All input and output pins can tolerate a continuous short-circuit fault condition to either rail. Internal hysteresis ensures clean output switching, even with slow-moving input signals. The MAX941 features latch enable and device shutdown. The single MAX941 and dual MAX942 are offered in a tiny µMAX® package. Both the single and dual MAX942 are available in 8-pin DIP and SO packages. The quad MAX944 comes in 14-pin DIP and narrow SO packages.

Key Features
  • Available in µMAX Package
  • Optimized for 3V and 5V Applications (Operation Down to 2.7V)
  • Fast, 80ns Propagation Delay (5mV Overdrive)
  • Rail-to-Rail Input Voltage Range
  • Low 350µA Supply Current per Comparator
  • Low, 1mV Offset Voltage
  • Internal Hysteresis for Clean Switching
  • Outputs Swing 200mV of Power Rails
  • CMOS/TTL-Compatible Outputs
  • Output Latch (MAX941 Only)
  • Shutdown Function (MAX941 Only)
MAX941, MAX942, MAX944: Pin Configuration
MAX941, MAX942, MAX944: Pin Configuration
Applications/Uses
  • 3V/5V Systems
  • Battery-Powered Systems
  • Line Receivers
  • Sampling Circuits
  • Threshold Detectors/Discriminators
  • Zero-Crossing Detectors
DataSheet
titleDownload file
MAX941-MAX944 Data SheetMAX941-MAX944.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
MAX941180Rail to Rail
to Neg. Rail
2.75.560014Push-Pull-55 to +125
-40 to +85
0 to +70
µMAX/8
CDIP(N)/8
PDIP(N)/8
SOIC(N)/8
$1.99 @1k
MAX9422500µMAX/8
PDIP(N)/8
SOIC(N)/8
$2.54 @1k
MAX9444500CDIP(N)/14
PDIP(N)/14
SOIC(N)/14
$3.49 @1k
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX944CPDNo Longer AvailableMAX944CPD+PDIP(N),;14 pin;160.5 mm²0°C to +70°CNo
MAX944CPD+ActivePDIP(N),;14 pin;160.5 mm²0°C to +70°CLead Free
MAX944CSDNo Longer AvailableMAX944CSD+SOIC(N),;14 pin;54.2 mm²0°C to +70°CNo
MAX944CSD+ActiveSOIC(N),;14 pin;54.2 mm²0°C to +70°CLead Free
MAX944CSD+TActiveSOIC(N),;14 pin;54.2 mm²0°C to +70°CLead Free
MAX944CSD-TNo Longer AvailableMAX944CSD+TN.SO;14 pin0°C to +70°CSee data sheet
MAX944EPDNo Longer AvailableMAX944EPD+PDIP(N),;14 pin;160.5 mm²-40°C to +85°CNo
MAX944EPD+ActivePDIP(N),;14 pin;160.5 mm²-40°C to +85°CLead Free
MAX944ESDNo Longer AvailableMAX944ESD+SOIC(N),;14 pin;54.2 mm²-40°C to +85°CNo
MAX944ESD+ActiveSOIC(N),;14 pin;54.2 mm²-40°C to +85°CLead Free
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX944ESD+TActiveSOIC(N),;14 pin;54.2 mm²-40°C to +85°CLead Free
MAX944ESD-TNo Longer AvailableMAX944ESD+TN.SO;14 pin-40°C to +85°CSee data sheet
MAX944MJDNo Longer AvailableCDIP(N),;14 pin;162.1 mm²-55°C to +125°CNo
MAX941-MAX944.pdf MAX944
MAX941-MAX944.pdf MAX944