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Product Detailed Parameters
- Description：IC COMPARATOR 4 DIFF 14SOIC
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：General Purpose
- Number of Elements：4
- Output Type：Open-Collector
- Voltage - Supply, Single/Dual (±)：2V ~ 36V, ±1V ~ 18V
- Voltage - Input Offset (Max)：2.5mV @ 30V
- Current - Input Bias (Max)：0.25µA @ 5V
- Current - Output (Typ)：20mA
- Current - Quiescent (Max)：2mA
- CMRR, PSRR (Typ)：-
- Propagation Delay (Max)：-
- Hysteresis：-
- Operating Temperature：-40°C ~ 125°C
- Package / Case：14-SOIC (0.154", 3.90mm Width)
- Mounting Type：Surface Mount
- Supplier Device Package：14-SOIC
- Grade：-
- Qualification：-
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Overview
The LM239AQDREP is a quad differential comparator from the LM239A series, manufactured by Texas Instruments. It features four independent channels in a 14-SOIC package. The device operates with a supply voltage range of 2 V to 36 V (single) or ±1 V to ±18 V (dual). Key electrical parameters include a maximum input offset voltage of 2.5 mV at 30 V, a maximum input bias current of 0.25 µA at 5 V, and a typical output sink current of 20 mA. It supports an operating temperature range of -40°C to +125°C and is AEC-Q100 qualified for automotive applications.
Feature Summary
- Automotive-grade qualification compliant with AEC-Q100 standards
- Quad differential architecture providing four independent comparison channels
- Open-collector output capability compatible with CMOS and TTL logic families
- Wide single-supply operation spanning 2 V to 36 V
Applications
- Automotive electronic control units requiring high-reliability signal monitoring
- Voltage level detection circuits in vehicle power management systems
- Temperature sensing interfaces utilizing thermistor-based threshold detection
- Current limiting protection circuits in automotive loads
Procurement Notes
Verify that the specific ordering suffix matches the required automotive grade and RoHS compliance status. Confirm the package variant corresponds to the 14-SOIC form factor. Ensure the revision level aligns with the latest datasheet specifications for input offset voltage and bias current tolerances. Cross-reference the manufacturer part number against authorized distributor catalogs to confirm authenticity and traceability.
Selection Notes
Select this component when automotive reliability certification is mandatory for the application environment. Choose this model over standard industrial grades if the design requires operation within the extended temperature range of -40°C to +125°C. Consider this part for designs needing open-collector outputs that interface directly with various logic families without additional pull-up components. Evaluate the low input bias current requirements for high-impedance sensor interfaces.
Part Context
This device belongs to the LM239A family of quad differential comparators produced by Texas Instruments. It shares functional similarities with the LM239 and LM139 series but offers improved performance characteristics such as lower input offset voltage. The LM239AQDREP specifically denotes the automotive-qualified version packaged in a surface-mount SOIC-14 housing, distinguishing it from commercial variants like the LM239DR.
Replacement Considerations
- LM239AMDREP
- LM239AQDRQ1
FAQ
Is the LM239AQDREP suitable for harsh automotive environments?
Yes, it is AEC-Q100 qualified and rated for an operating temperature range of -40°C to +125°C.
What type of output does this comparator provide?
It features an open-collector output that is compatible with both CMOS and TTL logic families.
