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Product Detailed Parameters
- Description：LOW POWER LOW OFFSET VOLTAGE QUA
- Series：-
- Mfr：Texas Instruments
- Package：Tray
- Type：General Purpose
- Number of Elements：4
- Output Type：Open-Collector, Open-Drain
- Voltage - Supply, Single/Dual (±)：5V ~ 30V, ±2.5V ~ 15V
- Voltage - Input Offset (Max)：2mV @ 30V
- Current - Input Bias (Max)：1000pA @ 5V
- Current - Output (Typ)：20mA
- Current - Quiescent (Max)：2mA
- CMRR, PSRR (Typ)：70dB CMRR, 60dB PSRR
- Propagation Delay (Max)：1.3µs (Typ)
- Hysteresis：10mV
- Operating Temperature：-55°C ~ 125°C
- Package / Case：14-CSOIC (0.250", 6.35mm Width)
- Mounting Type：Surface Mount
- Supplier Device Package：14-CFP
- Grade：-
- Qualification：-
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Overview
The LM139AWG/883 is a quad low-power, low-offset voltage comparator manufactured by Texas Instruments. It features four independent differential comparators within a single package, designed for high-precision analog signal processing. The device operates with a wide supply voltage range and offers low input bias current to minimize loading effects on high-impedance sources. Its architecture supports open-collector outputs, allowing flexible interfacing with various logic families. The component is qualified for military-grade environmental conditions, ensuring reliability in demanding applications.
Feature Summary
- Quad differential comparator configuration for multi-channel signal monitoring
- Low offset voltage specification for enhanced measurement accuracy
- Open-collector output structure enabling voltage level translation
- Military temperature rating for extreme environment operation
Applications
- Precision voltage monitoring systems
- High-temperature industrial control circuits
- Aerospace sensor interface modules
- Battery management system threshold detection
Procurement Notes
Verify the specific suffix 'WG/883' against the official Texas Instruments datasheet to confirm military qualification and ceramic packaging details. Ensure compatibility with existing board layouts regarding the dual flatpack or ceramic DIP footprint. Confirm that the open-collector output requirements match the downstream circuit pull-up configurations. Validate that the operating temperature range meets the specific environmental constraints of the target application.
Selection Notes
Select this component when high precision and military reliability are required over standard commercial alternatives. The low offset voltage makes it suitable for small signal comparisons where accuracy is critical. Consider the power consumption trade-offs compared to faster comparators if speed is not the primary constraint. Ensure the design accounts for the open-collector output nature, requiring external pull-up resistors for proper logic high levels.
Part Context
The LM139 series is a legacy line of quad comparators widely used in analog design. The AWG/883 variant represents the military-grade version, distinguished by its enhanced reliability and radiation hardness characteristics compared to commercial parts. It belongs to the broader family of low-power operational amplifiers and comparators developed by Texas Instruments and previously National Semiconductor.
Replacement Considerations
- LM139JAN
- LM2901AV
FAQ
What is the typical input offset voltage for the LM139AWG/883?
The device is characterized as a low-offset voltage comparator, typically offering an input offset voltage in the millivolt range to ensure accurate switching thresholds.
Does the LM139AWG/883 support rail-to-rail output?
No, the LM139AWG/883 features open-collector outputs, which require an external pull-up resistor to define the high logic level and do not drive to the positive supply rail directly.
