My Inquiry
My Account
Texas Instruments LM293DRG3
- Part No.:
- LM293DRG3
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LM293DRG3.pdf
- Description:
- IC COMPARATOR 2 DIFF 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:12,156
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LM293DRG3 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 including ground. It serves as a precision threshold detector in power supply monitoring, motor control feedback, and industrial sensor interfaces.
For engineers reviewing the LM293DRG3 datasheet, LM293DRG3 pinout, LM293DRG3 application, or LM293DRG3 equivalent, key selection criteria include its SOIC-8 package, guaranteed operation from –25°C to +85°C, open-collector output compatibility with TTL/MOS/CMOS, and differential input voltage range up to ±36 V.
Technical Context
The LM293DRG3 implements two independent comparators with internal hysteresis-free architecture, supporting wide common-mode input range (0 V to VCC – 2 V) and differential input tolerance of ±36 V. Its open-collector outputs require external pull-up resistors and sink up to 6 mA per channel at 1.5 V saturation.
Quiescent current remains stable across supply voltage (0.45–2.5 mA total), and input bias current is specified at –25 nA (typ) to –400 nA (max), enabling high-impedance sensing applications without significant loading error.
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 over temperature - sets minimum detectable voltage difference between inputs |
| Response Time (typ) | 1.3 µs - enables reliable detection of fast transients in motor commutation or overvoltage events |
| Output Sink Current (min) | 6 mA - drives standard LED indicators or logic-level MOSFET gates directly |
| Common-Mode Input Range | 0 V to VCC – 2 V - allows ground-referenced signal comparison without level-shifting |
| ESD Rating (HBM) | 2000 V - meets industrial handling requirements without additional protection circuitry |
Pinout & Package
LM293DRG3 is housed in an 8-pin SOIC (D) package measuring 4.90 mm × 3.91 mm, with standard JEDEC MS-012AC footprint and 1.27 mm pitch.
| 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; referenced to GND or other stable node |
| 1IN+ | Comparator 1 non-inverting input | Accepts sensed signal (e.g., battery voltage, temperature sensor output) |
| GND | Ground reference | Return path for supply and input signals; must be low-impedance for noise immunity |
| 2IN+ | Comparator 2 non-inverting input | Independent second sensing channel; usable for dual-threshold or window detection |
| 2IN− | Comparator 2 inverting input | Second reference input; may share same reference as 1IN− or use separate value |
| 2OUT | Comparator 2 output | Independent open-collector output; enables asynchronous event triggering |
| 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 | Supports direct comparison of signals referenced to ground or near VCC without attenuation |
| Open-collector outputs | Enable wired-OR logic, level translation, and flexible pull-up voltage selection (e.g., 3.3 V logic driving 5 V bus) |
| Low input bias current (–25 nA typ) | Minimizes loading on high-impedance sources like thermistors or photodiodes |
| Differential input voltage tolerance (±36 V) | Withstands transient surges beyond supply rails-critical in motor drive and industrial I/O |
| Wide operating temperature (–25°C to +85°C) | Validated for commercial and extended-temperature industrial environments |
Applications
| Power Supply Monitoring | Motor Control Feedback |
|---|---|
Use Scenario: Detecting undervoltage lockout (UVLO) and overvoltage conditions in server PSUs and UPS systems. IC Role / Device Role / Timing Role: Dual comparator configured as window detector comparing sensed DC bus voltage against upper/lower thresholds. Use Value: Enables fail-safe shutdown before capacitor stress or load damage occurs; leverages rail-to-rail input to monitor 0–24 V range directly. | Use Scenario: Monitoring back-EMF zero-crossing in BLDC motor commutation for sensorless control. IC Role / Device Role / Timing Role: Comparator 1 detects rising edge of phase voltage; Comparator 2 detects falling edge to determine rotor position timing. Use Value: 1.3 µs response ensures accurate timing alignment at >10 kRPM; open-collector outputs interface cleanly with MCU GPIO interrupt pins. |
| Industrial Sensor Interface | Appliance Safety Interlock |
Use Scenario: Converting analog outputs from RTDs or pressure transducers into digital logic levels for PLC input modules. IC Role / Device Role / Timing Role: Comparator compares conditioned sensor voltage against programmable reference; hysteresis added externally to suppress noise. Use Value: ±9 mV offset allows sub-10 mV threshold resolution; low input bias avoids gain error in 100 kΩ+ sensor bridges. | Use Scenario: Verifying door latch engagement and thermal cutoff status in washing machines and ovens. IC Role / Device Role / Timing Role: Dual comparator monitors microswitch closure and bimetallic thermostat state simultaneously. Use Value: SOIC-8 package fits compact control boards; 2000 V HBM ESD rating withstands repeated user interaction and cleaning cycles. |
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 max offset, 1.3 µs response, but rated for 0°C to +70°C only | Limited to commercial-temperature environments; unsuitable for industrial enclosures with ambient >70°C | 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); higher max offset (±15 mV); same 1.3 µs response | Better suited for automotive under-hood or factory automation where cold start or high ambient is required | Choose LM2903DR when extended temperature range is mandatory and ±15 mV offset is acceptable |
Compared with LM393DR and LM2903DR, LM293DRG3 provides the optimal balance of temperature range (–25°C to +85°C), offset performance (±9 mV), and industrial-grade robustness-making it ideal for cordless power tools, building automation, and server PSU designs where reliability across moderate environmental extremes is critical.
Availability
LM293DRG3 is available at Aetrix Electronics and suitable for power supply monitoring, motor control feedback, and industrial sensor interface applications requiring stable component supply and long-term production continuity.
Supply support for LM293DRG3 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 consumer markets.
LM293DRG3 belongs to TI's legacy dual comparator product line, engineered for cost-sensitive, high-reliability industrial and appliance applications where precision, ruggedness, and long-lifecycle support are essential.
FAQ
What is the maximum supply voltage for LM293DRG3?
The absolute maximum supply voltage for LM293DRG3 is 36 V, but the recommended operating range is 2 V to 30 V. Operating above 30 V risks exceeding electrical specifications such as input common-mode range and output saturation voltage. Always observe derating guidelines in TI's SLCS005AH datasheet for sustained reliability.
Does LM293DRG3 support rail-to-rail input operation?
Yes, LM293DRG3 supports rail-to-rail input common-mode range down to GND and up to VCC – 2 V. This allows direct comparison of signals referenced to ground (e.g., battery voltage dividers) or near the positive rail without external level-shifting circuitry-critical for simplifying sensor interface designs.
Can LM293DRG3 outputs drive LEDs directly?
Yes, each open-collector output of LM293DRG3 can sink up to 6 mA at 1.5 V saturation, sufficient to drive standard indicator LEDs with appropriate series resistors. For example, with a 5 V pull-up and red LED (VF ≈ 1.8 V), a 470 Ω resistor limits current to ~6.8 mA-within safe operating limits.
What is the input offset voltage specification for LM293DRG3?
LM293DRG3 has a maximum input offset voltage of ±9 mV over its full operating temperature range (–25°C to +85°C). At 25°C, typical offset is ±2 mV. This defines the smallest voltage difference reliably detectable between inputs-key for precision thresholding in battery fuel gauging or temperature alarm circuits.
Is LM293DRG3 pin-compatible with LM393DR?
Yes, LM293DRG3 is fully pin-compatible with LM393DR in SOIC-8 packaging, sharing identical pinout, electrical behavior, and footprint. Both devices support the same 2–30 V supply, open-collector outputs, and ±36 V differential input. The primary distinction is LM293DRG3's extended temperature range (–25°C to +85°C vs. 0°C to +70°C).
LM293DRG3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 8-SOIC (0.154", 3.90mm 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
- :
- 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
LM293DRG3 FAQ
1.How can I place an order for LM293DRG3 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM293DRG3 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 LM293DRG3 reliable?
The price and inventory of LM293DRG3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM293DRG3 is usually 5 days.
3.What payment methods are accepted for LM293DRG3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM293DRG3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM293DRG3?
LM293DRG3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM293DRG3 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 LM293DRG3?
For technical support, including LM293DRG3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM293DRG3 requirements.
6.How does Aetrix verify that LM293DRG3 is sourced from the original manufacturer or authorized distributors?
All LM293DRG3 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 LM293DRG3 meets industry standards.
7.What is the process for return or replacement of LM293DRG3?
All LM293DRG3 units undergo pre-shipment inspection (PSI). If there is an issue with LM293DRG3, 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 LM293DRG3 part is unused and in its original packaging.
Return procedure for LM293DRG3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM293DRG3 Tags
-
LM2903DR
Texas Instruments
-
LM339DR
Texas Instruments
-
LM339PWR
Texas Instruments
-
LM393DT
STMicroelectronics
-
LM2901PWR
Texas Instruments
-
LM2903DT
STMicroelectronics
-
LM393DR
Texas Instruments
-
LM239DR
Texas Instruments
-
LM339APWR
Texas Instruments
-
LM2903P
Texas Instruments
-
LM393ADR
Texas Instruments
-
NCX2200GMAZ
NXP Semiconductors
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
