Specification	MAX9021AXK+T

CMRR, PSRR (Typ) [custom]	100 dB
CMRR, PSRR (Typ) [custom]	80 dB
Current - Input Bias (Max)	0.003 µA
Current - Quiescent (Max) [Max]	5 µA
Hysteresis	4 mV
Mounting Type	Surface Mount
Number of Elements	1
Operating Temperature [Max]	125 °C
Operating Temperature [Min]	-40 C
Output Type	TTL, CMOS, Rail-to-Rail
Package / Case	SOT-353, SC-70-5, 5-TSSOP
Propagation Delay (Max) [Max]	8 µs
Supplier Device Package	SC-70-5
Type	General Purpose, Standard (General Purpose)
Voltage - Input Offset (Max) [Max]	1 mV
Voltage - Supply, Single/Dual (±) [Max]	2.75 V, 5.5 V
Voltage - Supply, Single/Dual (±) [Min]	1.25 V, 2.5 V

MAX9021 Series

Part	Type	Operating Temperature [Max]	Operating Temperature [Min]	Supplier Device Package	Voltage - Supply, Single/Dual (±) [Min]	Voltage - Supply, Single/Dual (±) [Max]	Mounting Type	Propagation Delay (Max) [Max]	Current - Input Bias (Max)	Current - Quiescent (Max) [Max]	Output Type	Number of Elements	Voltage - Input Offset (Max) [Max]	Hysteresis	Package / Case	CMRR, PSRR (Typ) [custom]	CMRR, PSRR (Typ) [custom]	Current - Output (Typ)	CMRR, PSRR (Typ)
Analog Devices Inc./Maxim Integrated MAX9021AUK-T	General Purpose Standard (General Purpose)	125 °C	-40 C	SOT-23-5	1.25 V 2.5 V	2.75 V 5.5 V	Surface Mount	8 µs	0.003 µA	5 µA	CMOS Rail-to-Rail TTL	1	1 mV	4 mV	SC-74A SOT-753	100 dB	80 dB
Analog Devices Inc./Maxim Integrated MAX9021AXK	General Purpose	125 °C	-40 C	SC-70-5	2.5 V	5.5 V	Surface Mount	8 µs	0.08 µA	5 µA	Push-Pull	1	8 mV	4 mV	5-TSSOP SC-70-5 SOT-353			50 mA	80 dB 100 dB
Analog Devices Inc./Maxim Integrated MAX9021AXK-T	General Purpose Standard (General Purpose)	125 °C	-40 C	SC-70-5	1.25 V 2.5 V	2.75 V 5.5 V	Surface Mount	8 µs	0.003 µA	5 µA	CMOS Rail-to-Rail TTL	1	1 mV	4 mV	5-TSSOP SC-70-5 SOT-353	100 dB	80 dB
Analog Devices Inc./Maxim Integrated MAX9021AUK+T	General Purpose Standard (General Purpose)	125 °C	-40 C	SOT-23-5	1.25 V 2.5 V	2.75 V 5.5 V	Surface Mount	8 µs	0.003 µA	5 µA	CMOS Rail-to-Rail TTL	1	1 mV	4 mV	SC-74A SOT-753	100 dB	80 dB
Analog Devices Inc./Maxim Integrated MAX9021AXK+T	General Purpose Standard (General Purpose)	125 °C	-40 C	SC-70-5	1.25 V 2.5 V	2.75 V 5.5 V	Surface Mount	8 µs	0.003 µA	5 µA	CMOS Rail-to-Rail TTL	1	1 mV	4 mV	5-TSSOP SC-70-5 SOT-353	100 dB	80 dB

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Cut Tape (CT)	1	$ 1.39
		10	$ 0.88
		25	$ 0.75
		100	$ 0.60
		250	$ 0.53
		500	$ 0.49
	Digi-Reel®	1	$ 1.39
		10	$ 0.88
		25	$ 0.75
		100	$ 0.60
		250	$ 0.53
		500	$ 0.49
	N/A	9382	$ 1.24
		35000	$ 1.24
	Tape & Reel (TR)	2500	$ 0.49

Description

General part information

MAX9021 Series

The MAX9021/MAX9022/MAX9024 single/dual/quad comparators are optimized for low-power consumption while still providing a fast output response. They are designed for single-supply applications from 2.5V to 5.5V, but can also operate from dual supplies. These comparators have a 3µs propagation delay and consume 2.8µA of supply current per comparator over the -40°C to +125°C operating temperature range. The combination of low-power, single-supply operation down to 2.5V, and ultra-small footprint makes these devices ideal for portable applications.The MAX9021/MAX9022/MAX9024 have 4mV of built-in hysteresis to provide noise immunity and prevent oscillations even with a slow-moving input signal. The input common-mode range extends from the negative supply to within 1.1V of the positive supply. The design of the comparator-output stage substantially reduces switching current during output transitions, eliminating powersupply glitches.The MAX9021 single comparator is available in tiny 5-pin SC70 and SOT23 packages. The MAX9022 dual comparator is available in 8-pin SOT23, µMAX®, and SO packages, and the MAX9024 quad comparator is available in 14-pin TSSOP and SO packages.ApplicationsBattery-PoweredDigital Line ReceiversKeyless Entry SystemsMobile CommunicationsPhotodiode PreampsPortable SystemsSensor-Signal DetectionThreshold Detectors/Discriminators

Documents

Technical documentation and resources

MAX9021 Reliability Data

Reliability Data

Package Drawing - 5-SC70-N/A

Package Drawing

MAX9021-MAX9024: Micropower, Ultra-Small, Single/Dual/Quad Single-Supply Comparators Data Sheet (Rev.3)

Data Sheet