LM239AMPWREP: High-Performance Quad Differential Comparator IC by Texas Instruments

The LM239AMPWREP represents Texas Instruments' commitment to precision analog solutions. This quad differential comparator in a space-saving 14-TSSOP package delivers exceptional performance for demanding applications across industries. With its military-grade temperature range and versatile output configurations, it's become a preferred choice for engineers worldwide.

In-Depth Technical Specifications

1. Quad Comparator Architecture

Featuring four independent precision comparators in a single IC, the LM239AMPWREP reduces component count by 75% compared to single-channel solutions. Each comparator offers:

• Typical response time of 1.3 s
• Input common-mode voltage range extending to ground
• Separate power supply pins for flexible configuration

2. Advanced Output Configuration

The device's open-collector outputs provide exceptional flexibility:

• Output sink current: 20mA (continuous)
• Compatible with TTL, CMOS, and MOS logic levels
• Output voltage swing within 250mV of ground

3. Power Efficiency

Engineered for low-power operation:

• Supply current (all four comparators): 2mA max
• Wide single-supply range: 2V to 36V
• Dual-supply operation: 1V to 18V

Enhanced Performance Features

Precision Characteristics

• Input offset voltage: 2.5mV max (30V supply)
• Input bias current: 250nA max (5V supply)
• Input offset current: 50nA max
• Voltage gain: 200V/mV typical

Robust Design

• ESD protection: 1kV Human Body Model
• Short-circuit protected outputs
• No output phase reversal with overdriven inputs

Comprehensive Applications

Industrial Systems

Perfect for:

• PLC input modules
• Motor control circuits
• Process monitoring systems

Automotive Electronics

Ideal for harsh environments:

• Battery management systems
• Sensor interfaces
• Overvoltage protection

Consumer Electronics

Used in:

• Power supply monitoring
• Audio level detection
• Touch screen controllers

Design Advantages

Board Layout Benefits

The 14-TSSOP package (4.4mm width) offers:

• 50% space savings vs. DIP packages
• Improved thermal performance
• Compatibility with automated assembly

Reliability Factors

• Extended industrial temperature range (-55 C to +125 C)
• Moisture Sensitivity Level (MSL) rating of 1
• Pb-free and RoHS compliant

Comparative Analysis

When benchmarked against similar quad comparators, the LM239AMPWREP offers:

Feature	LM239AMPWREP	Competitor A	Competitor B
Supply Range	2-36V	3-30V	5-32V
Input Offset	2.5mV	5mV	3mV
Temp Range	-55 C to +125 C	-40 C to +85 C	-25 C to +105 C

Implementation Guidelines

PCB Layout Recommendations

• Use 0.1 F bypass capacitors within 5mm of VCC
• Route high-impedance inputs away from noisy traces
• Implement ground planes for noise reduction

Thermal Considerations

• Maximum junction temperature: 150 C
• Thermal resistance: 110 C/W (TSSOP package)
• For high-temp applications, consider thermal vias

Purchasing Information

The LM239AMPWREP is available:

• Package: Tape and Reel (3000 units)
• Lead time: Typically 6-8 weeks
• Quality certifications: AEC-Q100 pending

Conclusion

The LM239AMPWREP sets a new standard for quad comparators with its unmatched combination of precision, power efficiency, and ruggedness. Whether you're designing mission-critical industrial systems or next-generation automotive electronics, this IC delivers reliable performance in the most demanding environments. Its parametric superiority and Texas Instruments' quality assurance make it the intelligent choice for engineers who won't compromise on performance.

For design support, including reference schematics and SPICE models, visit Texas Instruments' official product page. Volume pricing and sample requests are available through authorized distributors.