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Texas Instruments LM193DRG4
- Part No.:
- LM193DRG4
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LM193DRG4.pdf
- Description:
- IC COMPARATOR 2 DIFF 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,711
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Product details
Overview
LM193DRG4 from Texas Instruments is a dual voltage comparator designed for single-supply operation across 2–30 V, featuring ±9 mV max input offset voltage, 1.3 µs typical response time, and rail-to-rail common-mode input range down to ground-enabling precise threshold detection in industrial power supply monitoring and motor control feedback loops.
For engineers reviewing the LM193DRG4 datasheet, LM193DRG4 pinout, LM193DRG4 application, or LM193DRG4 equivalent, this page delivers verified electrical specs, SOIC-8 package details, real-world use cases in server PSUs and cordless tools, and two validated alternative parts with documented functional differences.
Technical Context
The LM193DRG4 implements open-collector output architecture with independent dual comparators, supporting TTL/MOS/CMOS interfacing via external pull-up. Its input stage operates with common-mode voltage extending to ground and differential input range up to ±30 V, enabling direct sensing of low-side current shunts or battery voltage rails without level-shifting.
Quiescent current remains stable at 0.8–1 mA over full supply range (2–30 V) and temperature (–55°C to +125°C), and output sinking capability reaches 6 mA at 1.5 V saturation-critical for driving optocouplers or logic inputs in isolated feedback paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 2 V to 30 V - supports wide-input industrial and automotive auxiliary supplies without regulation |
| Input Offset Voltage (max) | ±9 mV - enables accurate 1% threshold detection at 1 V reference without trimming |
| Response Time (typ) | 1.3 µs - sufficient for overvoltage protection in 500 kHz switching PSUs |
| Common-Mode Input Range | 0 V to (VCC – 2 V) - allows direct ground-referenced sensing of battery or shunt voltages |
| Output Sink Current (min) | 6 mA at VOL = 1.5 V - drives standard 5 V TTL loads or 4.7 kΩ pull-ups reliably |
| Operating Temperature | –55°C to +125°C - qualified for military-grade and under-hood automotive applications |
| ESD Rating (HBM) | 2000 V - meets IEC 61000-4-2 Level 2 for board-level robustness |
Pinout & Package
LM193DRG4 is housed in an 8-pin SOIC (D) package measuring 4.90 mm × 3.91 mm, with gull-wing leads and standard JEDEC MS-012AC footprint. Thermal performance is characterized by RθJA = 148.5°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OUT | Comparator 1 output | Open-collector drain - requires external pull-up to interface with 3.3 V or 5 V logic |
| 1IN− | Inverting input, Comp 1 | Accepts signals down to ground; referenced against 1IN+ for high-accuracy window detection |
| 1IN+ | Non-inverting input, Comp 1 | Used for reference voltage input; supports biasing from resistor divider off VCC |
| GND | Ground reference | Common return for both comparators and all external feedback networks |
| 2IN+ | Non-inverting input, Comp 2 | Independent channel for secondary monitoring (e.g., overtemperature flag) |
| 2IN− | Inverting input, Comp 2 | Supports differential sensing when paired with 2IN+; tolerant of inputs up to VCC |
| 2OUT | Comparator 2 output | Separate open-collector output - enables dual independent fault signals |
| VCC | Positive supply | Single rail powers both comparators; quiescent current independent of voltage |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input common-mode range | Enables direct connection to ground-sensed current shunts or battery terminals without level shifters |
| Open-collector outputs | Allows wired-OR configuration and flexible voltage translation across mixed-voltage systems |
| Low input bias current (max 400 nA) | Minimizes error in high-impedance reference dividers and sensor interfaces |
| Stable quiescent current vs. supply | Ensures predictable power budgeting across 2–30 V input range in unregulated supplies |
| Extended temperature range (–55°C to +125°C) | Validated for deployment in aerospace, defense, and engine-control environments |
Applications
| Server PSU Monitoring | Cordless Power Tool Battery Management |
|---|---|
Use Scenario: Real-time detection of overvoltage and undervoltage faults on +12 V and +5 V rails in redundant server power supplies. IC Role / Device Role / Timing Role: Dual comparator independently monitors each rail against precision references; open-collector outputs feed FPGA interrupt pins. Use Value: 1.3 µs response ensures fault capture within one switching cycle of a 500 kHz DC-DC controller. | Use Scenario: Cell voltage balancing and pack-level overcharge protection in 18 V Li-ion battery packs for cordless drills. IC Role / Device Role / Timing Role: LM193DRG4 compares individual cell voltages against 4.25 V reference; outputs drive MOSFET gate drivers for passive balancing. Use Value: ±9 mV offset enables ≤0.25% cell voltage matching accuracy without calibration. |
| Industrial Motor Drive Fault Detection | Building Automation HVAC Control |
Use Scenario: Monitoring phase current imbalance and overtemperature alerts in 3-phase BLDC motor inverters. IC Role / Device Role / Timing Role: One comparator detects current-sense amplifier output exceeding trip threshold; second monitors NTC thermistor voltage drop. Use Value: Ground-sensing input range eliminates need for isolated amplifiers on low-side shunts. | Use Scenario: Thermostat-controlled fan speed staging and frost protection in rooftop HVAC units. IC Role / Device Role / Timing Role: LM193DRG4 compares ambient and coil temperature sensor outputs to discrete thresholds; outputs directly switch relay drivers. Use Value: –55°C to +125°C rating ensures reliable operation in outdoor condenser enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM393DR | Same SOIC-8 package; wider temp range (0°C to 70°C); ±9 mV offset; 1.3 µs response; 2–30 V supply | Limited to commercial temperature grade; not rated for extended cold or hot environments | Select when cost sensitivity outweighs military/industrial temperature requirements |
| LM2903DR | Same SOIC-8 package; extended temp range (–40°C to +125°C); ±7 mV offset; 1.3 µs response; 2–32 V supply | Higher supply voltage ceiling and tighter offset improve margin in 24 V industrial controls | Choose for new designs requiring AEC-Q100 alignment or higher VCC headroom |
Compared with LM193DRG4, LM393DR offers identical functionality at lower cost but sacrifices extended temperature qualification, while LM2903DR provides superior offset and voltage range-making it preferable for next-generation 24 V systems where long-term stability matters.
Availability
LM193DRG4 is available at Aetrix Electronics and suitable for server PSU monitoring, cordless power tool battery management, and industrial motor drive fault detection requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LM193DRG4 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader delivering analog and embedded processing solutions, with over 90 years of innovation in precision analog ICs and industrial-grade components.
The LM193 series belongs to TI's legacy dual comparator product line, engineered specifically for ruggedized industrial, military, and automotive applications demanding wide temperature operation and high reliability under unregulated supply conditions.
FAQ
What is the maximum supply voltage rating for LM193DRG4?
The LM193DRG4 has a maximum supply voltage rating of 30 V, as specified in its Absolute Maximum Ratings table. This allows direct integration into 24 V industrial control systems and 28 V avionics buses without external regulation. Operation beyond 30 V risks permanent damage, and the device is not rated for the 36 V capability found in newer B-version comparators like LM393B.
Does LM193DRG4 support rail-to-rail input operation?
Yes, LM193DRG4 supports rail-to-rail common-mode input voltage from ground (0 V) up to VCC – 2 V. This enables direct sensing of signals referenced to ground-such as current shunt voltages-without level-shifting circuitry. However, inputs must not go below –0.3 V or above VCC + 0.3 V to avoid latch-up or excessive input current.
What is the typical propagation delay of LM193DRG4?
The LM193DRG4 exhibits a typical propagation delay of 1.3 µs under standard test conditions (VCC = 5 V, RL = 5.1 kΩ, CL = 15 pF, 100 mV input step). This value holds across its full operating temperature range (–55°C to +125°C) and supply range (2–30 V), making it suitable for sub-1 MHz protection circuits in power converters and motor drives.
Can LM193DRG4 drive a 5 V TTL load directly?
Yes, LM193DRG4 can drive a 5 V TTL load when used with an external pull-up resistor to 5 V. Its open-collector output sinks up to 6 mA while maintaining VOL ≤ 400 mV, satisfying the VIH ≥ 2 V and VIL ≤ 0.8 V requirements of standard TTL inputs. No level-shifter is needed if the pull-up is connected to the same 5 V rail as the driven gate.
Is LM193DRG4 pin-compatible with LM393DR?
Yes, LM193DRG4 is pin-compatible with LM393DR in the SOIC-8 (D) package: both share identical pinout (1OUT, 1IN−, 1IN+, GND, 2IN+, 2IN−, 2OUT, VCC) and footprint. However, LM193DRG4 is rated for –55°C to +125°C operation versus LM393DR's 0°C to 70°C range, and both exhibit identical electrical behavior at room temperature and nominal supply.
LM193DRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Type:
- General Purpose
- Number of Elements:
- 2
- Output Type:
- Open-Collector, Rail-to-Rail
- Voltage - Supply, Single/Dual (±):
- 2V ~ 36V, ±1V ~ 18V
- :
- 5mV @ 30V
- Voltage - Input Offset (Max):
- 0.25µA @ 5V
- Current - Input Bias (Max):
- 20mA
- Current - Output (Typ):
- 2.5mA
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- -
- Propagation Delay (Max):
- -
- Hysteresis:
- -55°C ~ 125°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 8-SOIC
LM193DRG4 FAQ
1.How can I place an order for LM193DRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM193DRG4 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for LM193DRG4 reliable?
The price and inventory of LM193DRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM193DRG4 is usually 5 days.
3.What payment methods are accepted for LM193DRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM193DRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM193DRG4?
LM193DRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM193DRG4 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for LM193DRG4?
For technical support, including LM193DRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM193DRG4 requirements.
6.How does Aetrix verify that LM193DRG4 is sourced from the original manufacturer or authorized distributors?
All LM193DRG4 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that LM193DRG4 meets industry standards.
7.What is the process for return or replacement of LM193DRG4?
All LM193DRG4 units undergo pre-shipment inspection (PSI). If there is an issue with LM193DRG4, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The LM193DRG4 part is unused and in its original packaging.
Return procedure for LM193DRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM193DRG4 Tags
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