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LM339DT

TILM339DT

Texas Instruments
Same LM339 comparator function in a surface-mount SOIC-14 package for PCB designs where through-hole DIP is not desired.
Active10,147 in stock
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Overview

The LM339DT is a quad independent differential voltage comparator designed to operate from a single power supply over a wide range of voltages. It features an open-collector output that is compatible with TTL, DTL, ECL, MOS, and CMOS logic levels, making it a versatile choice for mixed-signal designs.

Why Choose This Part

The device offers a wide supply voltage range from 2V to 32V and low current consumption of approximately 1.3 mA at 5V. Its SOIC-14 surface-mount package provides a significant space reduction over traditional DIP versions while maintaining the same robust electrical performance.

Applications

Limit Comparators
Monitoring signal levels against fixed reference voltages in industrial control systems.
Analog-to-Digital Conversion
Acting as a fundamental building block in simple ramp-type or flash ADCs.
Zero-Crossing Detectors
Detecting when an input AC signal crosses the reference ground for timing or phase control.
Pulse and Square Wave Generators
Creating timing pulses or clock signals when used in multivibrator configurations.

Key Specifications

Type Standard (General Purpose)
Output Type CMOS, DTL, ECL, MOS, Open-Collector, TTL
Mounting Type Surface Mount
Package / Case 14-SOIC (0.154", 3.90mm Width)
Number of Elements 4
Operating Temperature 0degC ~ 70degC
Current - Output (Typ) 16mA @ 5V
Supplier Device Package 14-SO
Current - Quiescent (Max) 2.5mA
Current - Input Bias (Max) 0.25uA @ 5V
Voltage - Input Offset (Max) 5mV @ 30V
Voltage - Supply, Single/Dual (+/-) 2V ~ 32V, +/-1V ~ 16V

Getting Started

To use the LM339DT, ensure the open-collector output is tied to a pull-up resistor to define the logic-high level. Since it is a surface-mount IC, a SOIC-14 to DIP adapter or a custom PCB is required for breadboarding; ensure the input common-mode voltage does not exceed the specified range.

LM339 Family

Comparing specs that differ across variants. The current part is highlighted.

Part Number Output Type Package Current - Output (Typ) Current - Input Bias (Max) Voltage - Input Offset (Max) Voltage - Supply, Single/Dual (+/-) Stock
LM339DT (this part) CMOS, DTL, ECL, MO.. SOIC-14 16mA 0.25uA 5mV 2V 10,147
LM339DR Open-Collector SOIC-14 20mA 0.25uA 5mV 2V 76,336
LM339ADR Open-Collector SOIC-14 20mA 0.25uA 3mV 2V 18,276
LM339APT (STMicroelectronics) CMOS, DTL, ECL, MO.. TSSOP-14 16mA 0.1uA 2mV 2V 46,042
Also available as: LM339PWRG3, LM339PT, LM339DRE4

Also Consider

LM339DR TITexas Instruments - This is a highly compatible alternative in the same SOIC-14 package with similar electrical characteristics.
LM2901DR TITexas Instruments - Choose this variant if an extended automotive temperature range is required for the quad comparator function.
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