ChipApex | Global Electronic Components Supplier
SEARCH
Search Product
Search Post
— IC芯片 | 连接器 | 传感器 | 被动器件 —
Consult the customer manager about the wholesale price.
consultation hotline：86-132-6715-2157
email：[email protected]
Contact the product manager for consultation. One-stop consultation is available.
Do you want a lower wholesale price? Please send us your inquiry and we will reply immediately.
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, Open-Drain
- Voltage - Supply, Single/Dual (±)：2V ~ 30V, ±1V ~ 15V
- Voltage - Input Offset (Max)：5mV @ 1.4V
- Current - Input Bias (Max)：0.1µA @ 1.4V
- Current - Output (Typ)：20mA
- Current - Quiescent (Max)：2mA
- CMRR, PSRR (Typ)：-
- Propagation Delay (Max)：-
- Hysteresis：-
- Operating Temperature：-55°C ~ 125°C
- Package / Case：14-CDIP (0.300", 7.62mm)
- Mounting Type：Through Hole
- Supplier Device Package：14-CDIP
- Grade：-
- Qualification：-
Download product information
Overview
The LM139J is a quad differential voltage comparator manufactured by Texas Instruments. It features four independent comparators designed for single-supply operation with a supply voltage range of 2V to 36V. The device utilizes an open-collector output configuration, allowing flexible interfacing with various logic families. Key electrical parameters include a maximum input offset voltage of 9mV and a typical response time of 1.3μs. It operates within a temperature range of -55°C to +125°C and is housed in a 14-pin ceramic dual in-line package (CDIP).
Feature Summary
- Quad differential voltage comparator architecture for multi-channel signal processing.
- Open-collector outputs enable wired-AND connections and compatibility with diverse logic levels.
- Single-supply operation capability simplifies power system design.
- Wide operating temperature range suitable for industrial environments.
Applications
- Battery-powered systems requiring low quiescent current.
- Industrial process control monitoring circuits.
- Over-voltage and under-voltage detection applications.
Procurement Notes
Verify the specific suffix J indicates the ceramic DIP package variant when sourcing. Confirm RoHS compliance status as legacy ceramic packages may differ from modern plastic equivalents. Ensure the application environment supports the thermal characteristics of the CDIP housing. Cross-reference datasheet revisions to confirm pinout consistency with existing designs.
Selection Notes
Select this component when high reliability in harsh environments is required due to its ceramic construction. Consider the open-collector output limitation if push-pull drive is necessary. Evaluate the 1.3μs propagation delay against system speed requirements. Compare against plastic variants like LM139N if cost or volume constraints favor surface-mount or standard DIP options.
Part Context
The LM139 series belongs to a family of general-purpose analog comparators widely used in linear integrated circuits. The 'J' suffix specifically denotes the military-grade or high-reliability ceramic package version, distinguishing it from commercial plastic counterparts. This packaging offers superior hermetic sealing compared to standard epoxy packages.
Replacement Considerations
LM139N: Plastic DIP equivalent with similar electrical characteristics but different package material. LM239: Commercial grade variant with potentially tighter parameter tolerances. LM339: Industry standard quad comparator often used as a direct functional substitute in non-critical applications.
