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Texas Instruments LM293ADGKR
- Part No.:
- LM293ADGKR
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LM293ADGKR.pdf
- Description:
- IC COMPARATOR 2 DIFF 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:10,328
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Product details
Overview
LM293ADGKR 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, and rail-to-rail input capability including ground-used in motor drive feedback, power supply monitoring, and industrial sensor interfaces.
For engineers reviewing the LM293ADGKR datasheet, LM293ADGKR pinout, LM293ADGKR application, or LM293ADGKR equivalent, this page delivers verified electrical specs, package-validated pin functions, real-world use cases, and two confirmed alternative parts with documented functional and thermal differences.
Technical Context
The LM293A belongs to the legacy LMx93x family and implements open-collector output architecture with internal ESD protection (2 kV HBM), enabling direct interface with TTL, MOS, and CMOS logic. Its differential input voltage range spans ±36 V, supporting robust sensing in noisy industrial environments.
It operates over –25°C to +85°C, draws 0.45–2.5 mA total supply current depending on VCC, and maintains stable performance with common-mode input down to ground-critical for low-side current sensing and battery voltage detection circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2 V to 30 V - supports wide-input industrial and automotive power rails without external regulation |
| Input Offset Voltage (max) | ±9 mV - enables accurate threshold detection at low signal differentials (e.g., <100 mV) |
| Response Time (typ) | 1.3 µs - suitable for medium-speed control loops like fan speed regulation or overvoltage latch |
| Input Bias Current (max) | –400 nA - minimizes loading on high-impedance sensor sources such as thermistors or photodiodes |
| Output Sink Current (min) | 6 mA - drives standard LED indicators or small relay coils directly without buffer transistors |
| Common-Mode Input Range | 0 V to (VCC – 2 V) - allows ground-referenced inputs and simplifies level-shifting in single-supply systems |
| ESD Rating (HBM) | 2000 V - meets IEC 61000-4-2 Level 2 requirements for board-level handling robustness |
Pinout & Package
VSSOP-8 (DGK) package: 3.00 mm × 3.00 mm body, 0.65 mm pitch, exposed pad connected to GND for thermal and noise performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OUT | Comparator 1 output | Open-collector node requiring external pull-up; sinks up to 6 mA for logic-level interfacing |
| 1IN− | Inverting input of Comp 1 | Accepts signals down to GND; used for reference or feedback path in error amplifiers |
| 1IN+ | Non-inverting input of Comp 1 | Accepts signals down to GND; commonly tied to sensor output or voltage divider |
| GND | Ground reference | Return path for supply and signals; must be connected to PCB ground plane with low impedance |
| 2IN+ | Non-inverting input of Comp 2 | Independent channel for dual-threshold detection (e.g., window comparator) |
| 2IN− | Inverting input of Comp 2 | Supports differential sensing or independent reference comparison |
| 2OUT | Comparator 2 output | Independent open-collector output; shares no internal resources with 1OUT |
| VCC | Positive supply | Single supply input; powers both comparators and internal bias circuitry |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input including ground | Enables direct connection to 0 V referenced sensors without level-shifting circuitry |
| Differential input voltage range = ±36 V | Allows safe operation with inputs exceeding supply rails-ideal for fault detection in high-voltage systems |
| Open-collector outputs | Permits wired-OR logic, mixed-voltage interfacing, and flexible pull-up selection (e.g., 3.3 V or 5 V) |
| Low quiescent current (0.45 mA typ @ 5 V) | Reduces standby power in battery-operated equipment such as portable test instruments |
| Output compatible with TTL/MOS/CMOS | Eliminates need for logic translators when driving microcontroller GPIO or FPGA inputs |
Applications
| Motor Drive Feedback | Server PSU Monitoring |
|---|---|
Use Scenario: Detecting overcurrent or stall conditions in BLDC motor controllers using shunt resistor voltage drop. IC Role / Device Role / Timing Role: Dual comparator configured as window detector to trigger shutdown if sensed voltage exceeds upper/lower thresholds. Use Value: ±9 mV offset ensures accurate trip points at millivolt-level shunt signals; 1.3 µs response enables fast fault response before MOSFET damage. | Use Scenario: Monitoring +12 V and +5 V rails in redundant server power supplies for undervoltage lockout. IC Role / Device Role / Timing Role: Independent comparators compare each rail against precision references to assert fault flags. Use Value: Rail-to-rail input allows direct sensing without op-amp buffers; open-collector outputs interface cleanly with system management controllers. |
| Industrial Sensor Interface | Appliance Control Logic |
Use Scenario: Converting analog temperature or pressure sensor outputs into digital on/off signals for PLC input modules. IC Role / Device Role / Timing Role: Comparator acts as analog-to-digital threshold translator with hysteresis added externally. Use Value: –400 nA max input bias current prevents loading of high-Z sensor bridges; 2 V min supply supports low-power isolated sensing nodes. | Use Scenario: Controlling heating element activation in smart ovens based on thermistor voltage thresholds. IC Role / Device Role / Timing Role: One comparator monitors temperature; second monitors door switch status for safety interlock. Use Value: Single 5 V supply powers both channels and logic; –25°C to +85°C rating covers full appliance operating envelope. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM393ADR | SOIC-8 package; same electrical specs but wider temp range (0°C to 70°C); 1.3 µs response, ±9 mV offset | Preferred where board space allows larger SOIC and ambient temps stay within commercial range | Select LM393ADR for cost-sensitive designs with no requirement for extended temperature operation or VSSOP footprint |
| LM2903DR | SOIC-8; higher max supply (32 V), wider temp range (–40°C to 125°C), ±15 mV offset, 1.3 µs response | Suitable for automotive under-hood or industrial control cabinets with extreme ambient conditions | Choose LM2903DR when operating beyond –25°C or above +85°C, or when >30 V supply rails are present |
Compared with LM293ADGKR, LM393ADR offers identical performance in a larger SOIC package ideal for prototyping, while LM2903DR trades slightly higher offset for guaranteed operation at –40°C and up to 32 V-making it more robust for harsh environments but less precise for low-voltage sensing.
Availability
LM293ADGKR is available at Aetrix Electronics and suitable for motor drive feedback, server PSU monitoring, and industrial sensor interface applications requiring stable component supply across production lifecycles.
Supply support for LM293ADGKR 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 company headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and communications markets.
The LMx93x family-including LM293A-is engineered for reliable, low-cost voltage comparison in cost-sensitive industrial and consumer systems where precision is balanced with ruggedness and ease of use.
FAQ
What is the maximum supply voltage for LM293ADGKR?
The LM293ADGKR supports a maximum supply voltage of 30 V, as specified in its absolute maximum ratings. This rating applies across its full operating temperature range of –25°C to +85°C. Exceeding 30 V risks permanent device damage. The LM293ADGKR is not rated for the 36 V or 38 V operation supported by newer B-version devices like LM393B or LM2903B.
Does LM293ADGKR have rail-to-rail input capability?
Yes, the LM293ADGKR features rail-to-rail input common-mode range extending down to ground (0 V), allowing direct interface with ground-referenced signals such as shunt resistors or thermistors. Its upper limit is VCC – 2 V, which is sufficient for most single-supply applications. This eliminates the need for level-shifting circuitry in many industrial sensing configurations using LM293ADGKR.
Can LM293ADGKR drive an LED directly?
Yes, LM293ADGKR can drive a standard indicator LED directly via its open-collector output. With a 5 V supply and 1 kΩ pull-up, it sinks up to 6 mA (minimum), sufficient for low-current LEDs. Ensure the LED forward voltage plus series resistor drop stays within the 0.7 V typical VOL at 4 mA sink, and verify thermal limits if continuously driven. LM293ADGKR's output stage does not source current-only sinks.
What is the input offset voltage specification for LM293ADGKR?
The LM293ADGKR has a maximum input offset voltage of ±9 mV over temperature (–25°C to +85°C), per TI's official datasheet. At 25°C, typical offset is ±2 mV. This value is higher than the ±4 mV of the LM293A "A-grade" variant but matches the base LM293A spec. Designers using LM293ADGKR should account for this 9 mV uncertainty when setting tight voltage thresholds.
Is LM293ADGKR pin-compatible with LM393ADR?
Yes, LM293ADGKR (VSSOP-8) and LM393ADR (SOIC-8) share identical pinout numbering and function mapping-both follow the standard 8-pin dual comparator layout: 1OUT, 1IN−, 1IN+, GND, 2IN+, 2IN−, 2OUT, VCC. However, they differ in package size, thermal performance, and temperature rating. LM293ADGKR uses a 3 mm × 3 mm VSSOP; LM393ADR uses a 4.9 mm × 3.91 mm SOIC. No PCB redesign is needed for footprint substitution if mechanical clearance permits.
LM293ADGKR 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:
- Active
- 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-VSSOP
LM293ADGKR FAQ
1.How can I place an order for LM293ADGKR through Aetrix?
Please submit a Request for Quotation (RFQ) for LM293ADGKR 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 LM293ADGKR reliable?
The price and inventory of LM293ADGKR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM293ADGKR is usually 5 days.
3.What payment methods are accepted for LM293ADGKR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM293ADGKR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM293ADGKR?
LM293ADGKR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM293ADGKR 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 LM293ADGKR?
For technical support, including LM293ADGKR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM293ADGKR requirements.
6.How does Aetrix verify that LM293ADGKR is sourced from the original manufacturer or authorized distributors?
All LM293ADGKR 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 LM293ADGKR meets industry standards.
7.What is the process for return or replacement of LM293ADGKR?
All LM293ADGKR units undergo pre-shipment inspection (PSI). If there is an issue with LM293ADGKR, 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 LM293ADGKR part is unused and in its original packaging.
Return procedure for LM293ADGKR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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