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Texas Instruments LM293ADRG4
- Part No.:
- LM293ADRG4
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LM293ADRG4.pdf
- Description:
- IC COMPARATOR 2 DIFF 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:38,665
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Product details
Overview
LM293ADRG4 from Texas Instruments is a dual voltage comparator IC designed for single-supply operation across 2 V to 30 V, featuring ±9 mV max input offset voltage, 1.3 µs typical response time, 25 mA output sink current, and rail-to-rail input common-mode range down to ground - widely deployed in motor drive feedback, power supply overvoltage detection, and industrial sensor interface circuits.
For engineers reviewing the LM293ADRG4 datasheet, LM293ADRG4 pinout, LM293ADRG4 application, or LM293ADRG4 equivalent, this page delivers verified electrical specs, SOIC-8 package details, real-world use cases, and two validated alternative parts with documented functional and thermal differences for design-in decisions.
Technical Context
The LM293ADRG4 implements two independent open-collector comparators with internal ESD protection (2 kV HBM), enabling direct interfacing with TTL, MOS, and CMOS logic. Its input stage supports common-mode voltages from ground to VCC − 2 V, and differential inputs tolerate up to ±36 V.
Quiescent current remains stable across supply voltage (0.45–2.5 mA at 5 V to 30 V), and output saturation voltage is specified at 130–700 mV under 4 mA sink load, ensuring reliable low-side switching in discrete logic-level translation and analog threshold detection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2 V to 30 V - supports wide-input industrial and automotive auxiliary rails without external regulation |
| Input Offset Voltage (max) | ±9 mV over full temperature range - sets minimum detectable voltage difference in precision threshold applications |
| Response Time (typ) | 1.3 µs at 100 mV overdrive - enables fast edge detection in motor commutation or fault monitoring |
| Output Sink Current | 6 mA min / 25 mA max - drives LEDs, relays, or logic gates directly without external buffer transistors |
| Common-Mode Input Range | 0 V to (VCC − 2 V) - allows direct sensing of signals referenced to ground in single-supply systems |
| ESD Rating (HBM) | ±2000 V - meets IEC 61000-4-2 Level 2 for robustness in manufacturing and field environments |
Pinout & Package
LM293ADRG4 is housed in an 8-pin SOIC (Small Outline Integrated Circuit) package measuring 4.90 mm × 3.91 mm, with gull-wing leads and standard 1.27 mm pitch - compatible with automated SMT assembly and IPC Class 2/3 reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OUT | Comparator 1 output | Open-collector node requiring external pull-up; sinks current when IN+ > IN− |
| 1IN− | Comparator 1 inverting input | Negative reference input; accepts voltages from GND to VCC − 2 V |
| 1IN+ | Comparator 1 non-inverting input | Signal input; same common-mode range as 1IN− |
| GND | Ground reference | Return path for supply and signal; must be low-impedance for noise immunity |
| 2IN+ | Comparator 2 non-inverting input | Independent signal input; electrically isolated from comparator 1 |
| 2IN− | Comparator 2 inverting input | Independent reference input; supports same voltage range as 1IN− |
| 2OUT | Comparator 2 output | Second open-collector output; shares no internal connection with 1OUT |
| VCC | Positive supply | Single power rail; powers both comparators; decoupling capacitor required at pin |
Key Features
| Feature | Design Value |
|---|---|
| Open-collector outputs | Enable wired-OR logic, level translation across different supply domains, and direct LED/relay driving |
| Rail-to-rail input common-mode range | Supports ground-referenced sensors and battery-monitoring circuits without input biasing networks |
| Low quiescent current | 0.45 mA typical at 5 V - extends battery life in portable equipment and low-power IoT nodes |
| High ESD tolerance | 2 kV HBM rating reduces risk of damage during handling, PCB assembly, and end-user integration |
| Wide supply voltage range | Operates from 2 V (e.g., Li-ion cutoff) to 30 V (industrial 24 V systems) - eliminates need for multiple BOM variants |
Applications
| Motor Drive Feedback | Power Supply Monitoring |
|---|---|
Use Scenario: Detect rotor position zero-crossing in BLDC motor controllers using back-EMF sensing. IC Role / Device Role / Timing Role: Dual comparator compares phase voltage against mid-rail reference to generate commutation timing edges. Use Value: 1.3 µs propagation delay ensures accurate timing alignment; open-collector outputs interface directly with microcontroller GPIO or gate drivers. | Use Scenario: Monitor DC bus voltage in server PSUs to trigger shutdown if overvoltage exceeds 12.6 V. IC Role / Device Role / Timing Role: One comparator detects overvoltage condition; second monitors undervoltage for brownout protection. Use Value: ±9 mV offset ensures trip point accuracy within ±0.1 V at 12 V; rail-to-rail input handles direct sensing without attenuator resistors. |
| Industrial Sensor Interface | Appliance Safety Control |
Use Scenario: Convert thermistor or RTD resistance changes into digital on/off signals for HVAC temperature staging. IC Role / Device Role / Timing Role: Comparator compares conditioned sensor voltage against programmable thresholds set by resistor dividers. Use Value: Common-mode range including ground allows direct connection to low-side current-sense amps or thermistor bridges. | Use Scenario: Detect door latch status and water level in washing machines using reed switches and float sensors. IC Role / Device Role / Timing Role: Dual comparator provides independent logic-level outputs for safety interlock and fill-level control. Use Value: 25 mA sink capability drives indicator LEDs and optocouplers directly; 30 V max supply accommodates 24 V control rails. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual open-collector comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM393DR | Same SOIC-8 package; identical pinout; ±9 mV offset, 1.3 µs response, but rated for 0°C to 70°C only (vs. LM293A's –25°C to 85°C) | Limited to commercial-temperature environments; unsuitable for extended ambient or chassis-mounted industrial enclosures | Select LM393DR only for cost-sensitive consumer-grade designs where temperature range is not critical |
| LM2903DR | SOIC-8 pin-compatible; ±7 mV offset, 1.3 µs response, –40°C to 125°C operating range, higher ESD (2 kV HBM), and 32 V max supply | Broader temp range and higher supply tolerance support automotive and harsh industrial use; slightly lower offset improves threshold accuracy | Choose LM2903DR when extended temperature, higher voltage margin, or automotive qualification is required |
Compared with LM293ADRG4, LM393DR offers identical functionality at lower cost but sacrifices operating temperature range, while LM2903DR provides superior thermal and voltage margins at modest cost increase - making it suitable for next-generation designs targeting AEC-Q100 or extended-life industrial deployments.
Availability
LM293ADRG4 is available at Aetrix Electronics and suitable for motor control, power supply supervision, and appliance safety systems requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for LM293ADRG4 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.
LM293ADRG4 belongs to TI's legacy dual comparator product line, engineered for reliability in cost-sensitive, high-volume industrial and consumer applications where predictable open-collector behavior and wide supply range are essential.
FAQ
What is the maximum supply voltage for LM293ADRG4?
The absolute maximum supply voltage for LM293ADRG4 is 36 V, but the recommended operating range is 2 V to 30 V per the datasheet. Exceeding 30 V may impact long-term reliability and is not guaranteed for parametric performance. The device is rated for continuous operation up to 30 V, with thermal limits defined by its SOIC-8 package RθJA of 148.5°C/W.
Does LM293ADRG4 support rail-to-rail input operation?
LM293ADRG4 supports a common-mode input voltage range from ground (0 V) to VCC − 2 V - meaning it accepts inputs down to GND but does not extend fully to the positive rail. This allows direct interfacing with ground-referenced sensors and low-side current monitors, though high-side sensing above VCC − 2 V requires attenuation or level-shifting circuitry.
Can LM293ADRG4 drive an LED directly?
Yes, LM293ADRG4 can drive an LED directly via its open-collector output: connect the LED anode to VCC (≤30 V) and cathode to 1OUT or 2OUT, then select a series resistor to limit current to ≤25 mA. At 5 V supply and 2 mA LED current, a 2 kΩ resistor yields ~150 mV output saturation - well within spec. Ensure thermal derating if sinking >10 mA continuously.
What is the input offset voltage specification for LM293ADRG4?
The input offset voltage for LM293ADRG4 is ±9 mV maximum across its full operating temperature range of –25°C to +85°C. At 25°C, typical offset is ±2 mV. This value defines the smallest differential input voltage that guarantees output state change - critical for precision threshold detection in sensor interfaces and battery monitoring circuits.
Is LM293ADRG4 pin-compatible with LM393DR?
Yes, LM293ADRG4 is pin-compatible with LM393DR in the SOIC-8 package: both share identical pin numbering, function mapping (1OUT, 1IN−, 1IN+, GND, 2IN+, 2IN−, 2OUT, VCC), and open-collector output architecture. However, LM293ADRG4 is rated for –25°C to +85°C operation, whereas LM393DR is limited to 0°C to +70°C - a key distinction for thermal design validation.
LM293ADRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 8-SOIC (0.154", 3.90mm 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
- :
- 2mV @ 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-SOIC
LM293ADRG4 FAQ
1.How can I place an order for LM293ADRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM293ADRG4 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 LM293ADRG4 reliable?
The price and inventory of LM293ADRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM293ADRG4 is usually 5 days.
3.What payment methods are accepted for LM293ADRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM293ADRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM293ADRG4?
LM293ADRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM293ADRG4 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 LM293ADRG4?
For technical support, including LM293ADRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM293ADRG4 requirements.
6.How does Aetrix verify that LM293ADRG4 is sourced from the original manufacturer or authorized distributors?
All LM293ADRG4 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 LM293ADRG4 meets industry standards.
7.What is the process for return or replacement of LM293ADRG4?
All LM293ADRG4 units undergo pre-shipment inspection (PSI). If there is an issue with LM293ADRG4, 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 LM293ADRG4 part is unused and in its original packaging.
Return procedure for LM293ADRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM293ADRG4 Tags
-
LM2903DR
Texas Instruments
-
LM339DR
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LM339PWR
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LM393DT
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LM2901PWR
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LM2903DT
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LM393DR
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LM239DR
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LM339APWR
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LM2903P
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LM393ADR
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NCX2200GMAZ
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