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Product Detailed Parameters
- Description：IC COMPARATOR 4 DIFF 14CDIP
- Series：-
- Mfr：Texas Instruments
- Package：Tube
- Type：General Purpose
- Number of Elements：4
- Output Type：Open-Collector
- Voltage - Supply, Single/Dual (±)：2V ~ 30V, ±1V ~ 15V
- Voltage - Input Offset (Max)：3mV @ 30V
- Current - Input Bias (Max)：0.25µA @ 5V
- Current - Output (Typ)：20mA
- Current - Quiescent (Max)：2.5mA
- CMRR, PSRR (Typ)：-
- Propagation Delay (Max)：-
- Hysteresis：-
- Operating Temperature：0°C ~ 70°C
- Package / Case：14-CDIP (0.300", 7.62mm)
- Mounting Type：Through Hole
- Supplier Device Package：14-CDIP
- Grade：-
- Qualification：-
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Overview
The LM339J is a quad differential comparator manufactured by Texas Instruments, housed in a 14-pin Ceramic Dual In-Line Package (CDIP). It operates within a supply voltage range of 2V to 30V single or ±1V to ±15V dual. The device features an open-collector output capable of sinking up to 20mA. Key electrical characteristics include a maximum input offset voltage of 3mV at 30V and a typical input bias current of 0.25µA at 5V. The unit supports through-hole mounting and functions across a temperature range of 0°C to 70°C.
Feature Summary
- Integrates four independent high-gain differential comparators within a single ceramic package for space-efficient circuit design.
- Features open-collector outputs that allow flexible interfacing with various logic families and voltage levels via external pull-up resistors.
- Designed for low power consumption with minimal quiescent current draw, suitable for battery-operated applications.
Applications
- Temperature monitoring systems requiring precise threshold detection
- Over-voltage protection circuits in power supplies
- Window comparator configurations for signal level validation
Procurement Notes
Verify the specific suffix 'J' indicates the ceramic DIP package variant distinct from plastic packages like 'N' or 'P'. Confirm RoHS compliance status as some legacy ceramic variants may differ from modern lead-free standards. Check manufacturer documentation for moisture sensitivity classification and storage requirements prior to assembly.
Selection Notes
Select this component when hermetic sealing or high thermal stability is required compared to standard plastic packages. Ensure the application can accommodate the open-collector output requirement necessitating external pull-up components. Verify that the 14-CDIP footprint matches the target PCB layout constraints.
Part Context
This part belongs to the LM139/LM239/LM339 family of quad comparators, a long-standing industry standard for analog comparison tasks. The 'J' suffix specifically denotes the military-grade or industrial-grade ceramic dual in-line package, offering robustness superior to plastic equivalents in harsh environments.
Replacement Considerations
- LM339AN/NOPB
- LP339N/NOPB
FAQ
What is the maximum output current capability of the LM339J?
The datasheet specifies a typical output current capability of 20mA per channel.
Does the LM339J support shutdown mode?
No, the LM339J does not feature a shutdown pin; it remains active whenever power is applied.
