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Texas Instruments LM293DGKRG4
- Part No.:
- LM293DGKRG4
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LM293DGKRG4.pdf
- Description:
- IC COMPARATOR 2 DIFF 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,919
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Product details
Overview
LM293DGKRG4 from Texas Instruments is a dual voltage comparator in VSSOP-8 package, designed for single-supply operation from 2 V to 30 V, featuring ±9 mV max input offset voltage, 1.3 µs typical response time, and rail-to-rail input capability down to ground - widely used in overvoltage detection and motor control feedback loops.
For engineers reviewing the LM293DGKRG4 datasheet, LM293DGKRG4 pinout, LM293DGKRG4 application, or LM293DGKRG4 equivalent, this page delivers verified electrical specs, validated pin functions, real-world use cases in industrial power systems, and two confirmed alternative parts with documented functional and thermal differences.
Technical Context
The LM293DGKRG4 implements open-collector output architecture per comparator, enabling wired-OR logic and flexible level translation. Its input stage supports common-mode voltage down to ground and up to VCC − 2 V, with differential input range matching supply rails (±30 V).
It operates across −25°C to +85°C ambient temperature, draws 0.45–1 mA quiescent current at 5 V, and delivers 6 mA sink capability at 1.5 V output saturation - optimized for cost-sensitive industrial sensing where precision is secondary to robustness and compatibility.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2 V to 30 V - supports direct connection to 3.3 V, 5 V, 12 V, and 24 V rails without regulation. |
| Input Offset Voltage (max) | ±9 mV - sets minimum detectable voltage difference in threshold-comparison circuits. |
| Response Time (typ) | 1.3 µs - enables reliable detection of fast transients in motor commutation or fault monitoring. |
| Input Bias Current (max) | −250 nA - ensures minimal loading on high-impedance sensor sources like thermistors or photodiodes. |
| Output Sink Current (min) | 6 mA - drives standard LED indicators or TTL/CMOS inputs directly without external buffers. |
| Common-Mode Input Range | 0 V to (VCC − 2 V) - allows direct interface with ground-referenced signals and rail-sensing applications. |
| Operating Temperature | −25°C to +85°C - qualified for commercial and industrial environments excluding extended automotive or military grades. |
Pinout & Package
VSSOP-8 (DGK) package: 3.00 mm × 3.00 mm body, 0.65 mm pitch, exposed pad for thermal enhancement (connected to GND).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OUT | Comparator 1 output | Open-collector node requiring external pull-up; sinks current when comparator trips. |
| 1IN− | Inverting input, Comp 1 | Negative reference input; accepts signals from 0 V to VCC − 2 V. |
| 1IN+ | Non-inverting input, Comp 1 | Signal input; same voltage range as 1IN−; used for threshold comparison. |
| GND | Ground reference | Return path for supply and inputs; thermal pad must be soldered to PCB ground plane. |
| 2IN+ | Non-inverting input, Comp 2 | Independent signal input for second comparator channel. |
| 2IN− | Inverting input, Comp 2 | Independent reference input for second comparator channel. |
| 2OUT | Comparator 2 output | Second open-collector output; electrically isolated from 1OUT. |
| VCC | Positive supply | Single supply input; no negative rail required; powers both comparators. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input common-mode range | Enables direct sensing of signals referenced to ground or near VCC without level-shifting circuitry. |
| Open-collector outputs | Supports wired-OR configuration, mixed-voltage interfacing, and simplified logic-level translation. |
| Low quiescent current (0.45 mA typ) | Reduces standby power in battery-backed or energy-constrained systems such as portable tools. |
| ESD rating: 2 kV HBM | Provides robust handling during board assembly and field service without additional protection components. |
| Wide supply range (2–30 V) | Eliminates need for dedicated LDOs in multi-rail systems like server PSUs or UPS inverters. |
Applications
| Overvoltage Protection Circuit | Motor Direction Control |
|---|---|
Use Scenario: Monitoring DC bus voltage in a cordless power tool battery pack to disable charging above 21 V. IC Role / Device Role / Timing Role: Dual comparator compares sensed voltage against two independent thresholds (e.g., warning and shutdown levels). Use Value: Prevents lithium-ion cell damage by triggering cutoff before overvoltage stress occurs. | Use Scenario: Detecting hall-effect sensor edges to determine rotor position in a BLDC motor driver. IC Role / Device Role / Timing Role: Converts analog hall sensor outputs into clean digital direction signals for MCU input. Use Value: Enables precise commutation timing without microcontroller ADC overhead or software filtering. |
| Server Power Supply Monitor | Appliance Safety Interlock |
Use Scenario: Validating presence and stability of +12 V and +5 V rails in a redundant server PSU before enabling downstream loads. IC Role / Device Role / Timing Role: Independent comparators verify each rail against precision references; outputs feed OR-gated enable logic. Use Value: Ensures safe power sequencing and prevents brown-out damage to CPUs and memory modules. | Use Scenario: Confirming door latch closure and temperature sensor integrity before starting a washing machine drum cycle. IC Role / Device Role / Timing Role: One comparator checks mechanical switch state; the other validates NTC thermistor voltage against safety limits. Use Value: Meets IEC 60335-1 requirements for dual-fault detection in household appliance control logic. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM293DR | SOIC-8 package (4.90 mm × 3.91 mm); identical electrical specs and pinout; higher thermal resistance (RθJA = 148.5°C/W vs. 193.7°C/W). | Suitable for through-hole prototyping or legacy PCBs; less suitable for space-constrained or thermally demanding layouts. | Select LM293DR only when SOIC footprint is fixed and thermal margin exceeds 25°C/W. |
| LM393DR | Same SOIC-8 package; identical pinout; wider temp range (0°C to 70°C); slightly higher offset (±9 mV max) but same response time and supply range. | Preferred for cost-optimized consumer electronics where extended temperature is not required. | Choose LM393DR for non-industrial applications with lower qualification requirements and budget constraints. |
Compared with LM293DGKRG4, LM293DR offers identical functionality in a larger SOIC package with better thermal performance, while LM393DR trades industrial temperature range for broader commercial availability and lower unit cost - all three share pin compatibility but differ in thermal design margin and qualification scope.
Availability
LM293DGKRG4 is available at Aetrix Electronics and suitable for overvoltage protection, motor control feedback, and server PSU monitoring requiring stable component supply across industrial production cycles.
Supply support for LM293DGKRG4 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, embedded processing, and connectivity solutions for industrial, automotive, and personal electronics markets.
The LM293 series belongs to TI's legacy dual comparator product line, engineered for reliability and interoperability in cost-sensitive industrial control and power management systems where robustness outweighs ultra-low offset or speed.
FAQ
What is the maximum supply voltage for LM293DGKRG4?
The LM293DGKRG4 supports a maximum supply voltage of 30 V under recommended operating conditions. Absolute maximum rating is 36 V, but sustained operation above 30 V may compromise long-term reliability and is not guaranteed across temperature extremes. Always refer to Section 5.2 of the official TI datasheet for derating guidance.
Does LM293DGKRG4 have rail-to-rail input capability?
Yes, the LM293DGKRG4 features rail-to-rail input common-mode range down to ground (0 V) and up to VCC − 2 V. This allows direct interface with ground-referenced sensors and signals near the positive rail - critical for applications like battery voltage monitoring and motor phase sensing where full-range signal capture is essential.
Can LM293DGKRG4 drive an LED directly?
Yes, LM293DGKRG4 can drive a standard 2 mA LED directly using its open-collector output with a pull-up resistor to VCC. At 5 V supply and 2 mA sink current, output voltage remains below 400 mV - well within visible LED forward voltage drop. For higher-current LEDs, an external transistor buffer is recommended.
Is LM293DGKRG4 pin-compatible with LM393DR?
Yes, LM293DGKRG4 and LM393DR share identical pinout and function across all eight pins. Both are dual comparators with open-collector outputs, same input voltage ranges, and compatible logic behavior. However, LM293DGKRG4 is rated for −25°C to +85°C, while LM393DR is rated for 0°C to 70°C - thermal qualification differs despite mechanical and electrical compatibility.
What is the typical propagation delay of LM293DGKRG4?
The typical propagation delay of LM293DGKRG4 is 1.3 µs under standard test conditions (5 V supply, 100 mV input step, 5.1 kΩ pull-up, 15 pF load). Delay varies with overdrive voltage and supply level - e.g., drops to ~0.3 µs with TTL-level input transitions. Full characterization is provided in Section 5.11 of the TI datasheet.
LM293DGKRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- General Purpose
- Number of Elements:
- 2
- Output Type:
- Open-Collector, Open-Drain, 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:
- -25°C ~ 85°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 8-VSSOP
LM293DGKRG4 FAQ
1.How can I place an order for LM293DGKRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM293DGKRG4 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 LM293DGKRG4 reliable?
The price and inventory of LM293DGKRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM293DGKRG4 is usually 5 days.
3.What payment methods are accepted for LM293DGKRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM293DGKRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM293DGKRG4?
LM293DGKRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM293DGKRG4 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 LM293DGKRG4?
For technical support, including LM293DGKRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM293DGKRG4 requirements.
6.How does Aetrix verify that LM293DGKRG4 is sourced from the original manufacturer or authorized distributors?
All LM293DGKRG4 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 LM293DGKRG4 meets industry standards.
7.What is the process for return or replacement of LM293DGKRG4?
All LM293DGKRG4 units undergo pre-shipment inspection (PSI). If there is an issue with LM293DGKRG4, 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 LM293DGKRG4 part is unused and in its original packaging.
Return procedure for LM293DGKRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM293DGKRG4 Tags
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