LTC1444IS#TRPBF

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Analog Devices Inc./Maxim Integrated

ULTRALOW POWER QUAD COMPARATORS WITH REFERENCE

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LTC1444IS#TRPBF

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Analog Devices Inc./Maxim Integrated

ULTRALOW POWER QUAD COMPARATORS WITH REFERENCE

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Description Specifications Series Pricing CAD Documents

Description

General part information

LTC1444 Series

The LTC1443/LTC1444/LTC1445 are ultralow power quad comparators with a built-in reference. The comparators feature less than 8.5μA supply current over temperature, an internal reference (1.182V ±1% for LTC1443 or 1.221V ±1% for LTC1444/LTC1445), programmable hysteresis (LTC1444/LTC1445) and TTL/CMOS output (LTC1443/ LTC1445) that sinks and sources current (open-drain output for LTC1444). The reference output can drive a bypass capacitor of up to 0.01μF without oscillation.The comparators operate from a single 2V to 11V supply or a dual ±1V to ±5.5V supply (LTC1443). Comparator hysteresis is easily programmable using two resistors and the HYST pin (LTC1444/LTC1445). Each comparator’s input operates from the negative supply to within 1.3V of the positive supply. The LTC1443/LTC1445 comparator output stage can continuously source up to 40mA. By eliminating the cross-conducting current that normally happens when the comparator changes logic states, power supply glitches are eliminated.The LTC1443/LTC1444/LTC1445 are available in the 16-pin SO, PDIP and DFN packages.ApplicationsBattery-Powered System MonitoringThreshold DetectorsWindow ComparatorsOscillator Circuits

Technical Specifications

Parameters and characteristics for this part

Specification	LTC1444IS#TRPBF

CMRR (Typ)	80 dB
Current - Output (Typ)	0.015 mA
Current - Quiescent (Max)	8.5 µA
Hysteresis	50 mV
Mounting Type	Surface Mount
Number of Elements	4
Operating Temperature (Max)	85 °C
Operating Temperature (Min)	-40 °C
Output Type	Open-Drain, TTL, CMOS
Package Length	0.154 in
Package Name	16-SOIC, 16-SO
Package Width	3.9 mm
Propagation Delay (Max)	12 µs
PSRR (Typ)	80 dB
Supply Configuration	Single, Dual
Type	with Voltage Reference
Voltage - Input Offset (Max)	10 mV
Voltage - Supply (Dual) Maximum (Magnitude)	5.5 V
Voltage - Supply (Dual) Minimum (Magnitude)	1 V
Voltage - Supply (Single) Maximum	11 V
Voltage - Supply (Single) Minimum	2 V

LTC1444 Series

Ultralow Power Quad Comparators with Reference

Part	CMRR (Typ)	PSRR (Typ)	Number of Elements	Voltage - Supply (Dual) Minimum (Magnitude)	Supply Configuration	Voltage - Supply (Single) Maximum	Voltage - Supply (Single) Minimum	Voltage - Supply (Dual) Maximum (Magnitude)	Current - Output (Typ)	Operating Temperature (Max)	Operating Temperature (Min)	Current - Quiescent (Max)	Mounting Type	Package / Case	Voltage - Input Offset (Max)	Output Type	Hysteresis	Type	Package Width	Package Name	Package Length	Propagation Delay (Max)
Analog Devices Inc./Maxim Integrated LTC1444CDHD#PBF	80 dB	80 dB	4	1 V	Dual Single	11 V	2 V	5.5 V	0.015 mA	70 °C	0 °C	8.5 µA	Surface Mount	16-WFDFN Exposed Pad	10 mV	CMOS Open-Drain TTL	50 mV	with Voltage Reference	4 mm	16-DFN	5 mm	12 µs
Analog Devices Inc./Maxim Integrated LTC1444IN#PBF	80 dB	80 dB	4	1 V	Dual Single	11 V	2 V	5.5 V	0.015 mA	85 °C	-40 °C	8.5 µA	Through Hole		10 mV	CMOS Open-Drain TTL	50 mV	with Voltage Reference	7.62 mm	16-DIP 16-PDIP	0.3 in	12 µs
Analog Devices Inc./Maxim Integrated LTC1444CS#TRPBF	80 dB	80 dB	4	1 V	Dual Single	11 V	2 V	5.5 V	0.015 mA	70 °C	0 °C	8.5 µA	Surface Mount		10 mV	CMOS Open-Drain TTL	50 mV	with Voltage Reference	3.9 mm	16-SO 16-SOIC	0.154 in	12 µs
Analog Devices Inc./Maxim Integrated LTC1444IDHD#TRPBF	80 dB	80 dB	4	1 V	Dual Single	11 V	2 V	5.5 V	0.015 mA	85 °C	-40 °C	8.5 µA	Surface Mount	16-WFDFN Exposed Pad	10 mV	CMOS Open-Drain TTL	50 mV	with Voltage Reference	4 mm	16-DFN	5 mm	12 µs
Analog Devices Inc./Maxim Integrated LTC1444CDHD#TRPBF	80 dB	80 dB	4	1 V	Dual Single	11 V	2 V	5.5 V	0.015 mA	70 °C	0 °C	8.5 µA	Surface Mount	16-WFDFN Exposed Pad	10 mV	CMOS Open-Drain TTL	50 mV	with Voltage Reference	4 mm	16-DFN	5 mm	12 µs
Analog Devices Inc./Maxim Integrated LTC1444IS#PBF	80 dB	80 dB	4	1 V	Dual Single	11 V	2 V	5.5 V	0.015 mA	85 °C	-40 °C	8.5 µA	Surface Mount		10 mV	CMOS Open-Drain TTL	50 mV	with Voltage Reference	3.9 mm	16-SO 16-SOIC	0.154 in	12 µs
Analog Devices Inc./Maxim Integrated LTC1444CN#PBF	80 dB	80 dB	4	1 V	Dual Single	11 V	2 V	5.5 V	0.015 mA	70 °C	0 °C	8.5 µA	Through Hole		10 mV	CMOS Open-Drain TTL	50 mV	with Voltage Reference	7.62 mm	16-DIP 16-PDIP	0.3 in	12 µs
Analog Devices Inc./Maxim Integrated LTC1444IDHD#PBF	80 dB	80 dB	4	1 V	Dual Single	11 V	2 V	5.5 V	0.015 mA	85 °C	-40 °C	8.5 µA	Surface Mount	16-WFDFN Exposed Pad	10 mV	CMOS Open-Drain TTL	50 mV	with Voltage Reference	4 mm	16-DFN	5 mm	12 µs
Analog Devices Inc./Maxim Integrated LTC1444CS#PBF	80 dB	80 dB	4	1 V	Dual Single	11 V	2 V	5.5 V	0.015 mA	70 °C	0 °C	8.5 µA	Surface Mount		10 mV	CMOS Open-Drain TTL	50 mV	with Voltage Reference	3.9 mm	16-SO 16-SOIC	0.154 in	12 µs
Analog Devices Inc./Maxim Integrated LTC1444IS#TRPBF	80 dB	80 dB	4	1 V	Dual Single	11 V	2 V	5.5 V	0.015 mA	85 °C	-40 °C	8.5 µA	Surface Mount		10 mV	CMOS Open-Drain TTL	50 mV	with Voltage Reference	3.9 mm	16-SO 16-SOIC	0.154 in	12 µs

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CAD

3D models and CAD resources for this part

Documents

Technical documentation and resources

LTC1444IS#TRPBF | Datasheet

R312 Reliability Data