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Texas Instruments LM293DRG4
- Part No.:
- LM293DRG4
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LM293DRG4.pdf
- Description:
- IC COMPARATOR 2 DIFF 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,625
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Product details
Overview
LM293DRG4 from Texas Instruments is a dual voltage comparator 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 down to ground-commonly used in power supply monitoring and motor control feedback circuits.
For engineers reviewing the LM293DRG4 datasheet, LM293DRG4 pinout, LM293DRG4 application, or LM293DRG4 equivalent, key selection criteria include input offset voltage tolerance, supply current at 5 V (0.45–1 mA), output sink capability (6 mA), common-mode input range (0 V to VCC – 2 V), and SOIC-8 package compatibility with legacy LM393/LM2903 designs.
Technical Context
The LM293DRG4 implements two independent open-collector comparators with internal ESD protection (2 kV HBM), enabling direct interface with TTL, MOS, and CMOS logic. Its input stage supports common-mode voltages from ground to VCC – 2 V, and differential input voltage up to ±36 V.
Quiescent current remains stable across supply voltage (2–30 V) and temperature (–25°C to +85°C), and output saturation voltage is specified at 130–400 mV under 4 mA sink load-critical for reliable pull-up resistor sizing in level-shifting applications.
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 over full temperature range - sets minimum detectable voltage difference in precision threshold detection |
| Response Time (typ) | 1.3 µs - enables use in medium-speed control loops such as overvoltage latch or PWM dead-time monitoring |
| Input Bias Current (max) | –400 nA - minimizes error in high-impedance sensor interfaces like thermistor or photodiode networks |
| Output Sink Current (min) | 6 mA - ensures robust drive into standard 5 V TTL loads or 4.7 kΩ pull-up resistors |
| Common-Mode Input Range | 0 V to VCC – 2 V - allows direct sensing of signals referenced to ground, e.g., battery voltage monitoring |
| ESD Rating (HBM) | 2000 V - meets basic handling requirements for board assembly without special ESD controls |
Pinout & Package
LM293DRG4 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 JEDEC MS-012AC footprint.
| 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 | Accepts reference or feedback signal; common-mode range includes ground |
| 1IN+ | Comparator 1 non-inverting input | Accepts sensed signal; differential input voltage rated to ±36 V |
| GND | Ground reference | Return path for supply and inputs; must be low-impedance for noise immunity |
| 2IN+ | Comparator 2 non-inverting input | Independent input channel; identical electrical specs to 1IN+ |
| 2IN− | Comparator 2 inverting input | Independent input channel; supports same common-mode and differential limits |
| 2OUT | Comparator 2 output | Second open-collector output; electrically isolated from 1OUT |
| VCC | Positive supply | Single supply pin; powers both comparators; no separate ground return needed |
Key Features
| Feature | Design Value |
|---|---|
| Open-collector outputs | Enable wired-OR logic, level translation, and flexible pull-up selection (e.g., 3.3 V logic driving 5 V bus) |
| Rail-to-rail input capability | Allows direct comparison of signals down to 0 V, eliminating need for level-shifting in ground-referenced sensing |
| Wide supply range (2–30 V) | Reduces BOM count by supporting both low-voltage microcontrollers and high-voltage industrial supplies |
| Low quiescent current (0.45–1 mA) | Enables use in always-on monitoring circuits without significant battery drain |
| Input ruggedness (±36 V differential) | Withstands transient surges in motor drive or power supply feedback paths without clamping diodes |
Applications
| Power Supply Monitoring | Motor Control Feedback |
|---|---|
Use Scenario: Detecting overvoltage/undervoltage conditions in AC-DC or DC-DC converter outputs. IC Role / Device Role / Timing Role: Dual comparator compares sensed output against precision references to assert fault flags. Use Value: Enables fast shutdown (<1.3 µs response) before downstream damage occurs; open-collector outputs interface directly with MCU GPIO or latch circuits. | Use Scenario: Monitoring back-EMF zero-crossing in brushless DC motor commutation. IC Role / Device Role / Timing Role: Compares phase voltage against mid-rail to generate timing edges for electronic commutation. Use Value: Input common-mode range extending to ground allows direct connection to low-side shunt or phase-leg nodes without level shifters. |
| Appliance Safety Interlock | Building Automation Sensor Interface |
Use Scenario: Verifying door closure or temperature cutoff in washing machines or HVAC units. IC Role / Device Role / Timing Role: Compares mechanical switch or thermistor voltage against fixed thresholds to enable/disable power relays. Use Value: ±9 mV offset ensures accurate trip points across –25°C to +85°C ambient; SOIC-8 simplifies rework on high-volume consumer PCBs. | Use Scenario: Converting analog smoke detector or CO sensor outputs into digital alarm signals. IC Role / Device Role / Timing Role: Threshold detection of conditioned sensor voltage to trigger building-wide alert systems. Use Value: 2 kV HBM ESD rating withstands handling in field-install environments; 6 mA sink drives optocouplers or PLC input modules directly. |
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; identical pinout; ±9 mV offset, 1.3 µs response, but rated for 0°C to 70°C only | Limited to commercial-temperature applications; not qualified for extended industrial ambient | Select LM393DR only if operating temperature stays within 0–70°C and cost is primary constraint |
| LM2903DR | SOIC-8 pin-compatible; wider temp range (–40°C to +125°C); ±7 mV offset; 1.3 µs response; 30 V max supply | Supports automotive under-hood and industrial motor drive environments where LM293DRG4's –25°C lower limit is insufficient | Choose LM2903DR when extended temperature operation or tighter offset is required without changing layout |
Compared with LM293DRG4, LM393DR offers identical performance at lower cost but lacks extended temperature qualification, while LM2903DR provides broader thermal coverage and marginally better offset-making it suitable for harsher environments without PCB redesign.
Availability
LM293DRG4 is available at Aetrix Electronics and suitable for power supply monitoring, motor control feedback, and appliance safety interlock applications requiring stable component supply and long-term industrial availability.
Supply support for LM293DRG4 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 precision comparator product line, engineered for cost-sensitive, general-purpose voltage comparison tasks in industrial controls, power management, and safety-critical subsystems.
FAQ
What is the maximum supply voltage for LM293DRG4?
The LM293DRG4 supports a maximum supply voltage of 30 V, as specified in its Absolute Maximum Ratings table. Operation beyond this voltage risks permanent device damage. This 30 V rating applies to standard non-V-suffix versions like LM293DRG4; V-suffix variants (e.g., LM2903V) support up to 32 V, but LM293DRG4 is not rated for that level. Always maintain design margins below 30 V for reliability.
Does LM293DRG4 have rail-to-rail input capability?
Yes, LM293DRG4 features rail-to-rail input capability down to ground (0 V), with a common-mode input voltage range specified from 0 V to VCC – 2 V. This allows direct interfacing with ground-referenced sensors or signals without level-shifting circuitry. However, inputs must not go more than 0.3 V below ground to avoid incorrect output states or excessive input current.
Can LM293DRG4 replace LM393DR in existing designs?
Yes, LM293DRG4 is pin-compatible and functionally equivalent to LM393DR in SOIC-8 packages, sharing identical electrical specifications including ±9 mV input offset, 1.3 µs response time, and 2–30 V supply range. The primary distinction is temperature grade: LM293DRG4 is rated for –25°C to +85°C, while LM393DR covers 0°C to +70°C. No PCB changes are needed for substitution.
What is the output configuration of LM293DRG4?
LM293DRG4 uses open-collector outputs on both comparators (pins 1 and 7). Each output requires an external pull-up resistor to a defined logic voltage (e.g., 3.3 V or 5 V). This configuration enables wired-OR logic, level translation between different supply domains, and direct interface with TTL, MOS, or CMOS inputs. The output can sink up to 6 mA while maintaining low saturation voltage (130–400 mV).
Is LM293DRG4 suitable for automotive applications?
LM293DRG4 is not AEC-Q100 qualified and is rated for –25°C to +85°C, making it unsuitable for under-hood automotive applications requiring –40°C to +125°C operation. For automotive use, TI recommends LM2903DR or LM2903QPWRQ1, which meet AEC-Q100 Grade 1 and offer extended temperature range and enhanced ESD robustness. LM293DRG4 may be used in cabin or infotainment subsystems where ambient conditions remain within its specified range.
LM293DRG4 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
- :
- 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-SOIC
LM293DRG4 FAQ
1.How can I place an order for LM293DRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM293DRG4 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 LM293DRG4 reliable?
The price and inventory of LM293DRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM293DRG4 is usually 5 days.
3.What payment methods are accepted for LM293DRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM293DRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM293DRG4?
LM293DRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM293DRG4 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 LM293DRG4?
For technical support, including LM293DRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM293DRG4 requirements.
6.How does Aetrix verify that LM293DRG4 is sourced from the original manufacturer or authorized distributors?
All LM293DRG4 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 LM293DRG4 meets industry standards.
7.What is the process for return or replacement of LM293DRG4?
All LM293DRG4 units undergo pre-shipment inspection (PSI). If there is an issue with LM293DRG4, 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 LM293DRG4 part is unused and in its original packaging.
Return procedure for LM293DRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM293DRG4 Tags
-
LM2903DR
Texas Instruments
-
LM339DR
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LM339PWR
Texas Instruments
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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
Texas Instruments
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LM2903P
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LM393ADR
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NCX2200GMAZ
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