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Texas Instruments LM293PG4
- Part No.:
- LM293PG4
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
LM293PG4.pdf
- Description:
- IC COMPARATOR 2 DIFF 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,046
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Product details
Overview
LM293PG4 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 power supply monitoring, motor control feedback, and industrial sensor interfaces.
For engineers reviewing the LM293PG4 datasheet, LM293PG4 pinout, LM293PG4 application, or LM293PG4 equivalent, this page delivers verified electrical specs, package mapping to PDIP-8, real-world use cases in server PSUs and cordless tools, and two validated alternative parts with documented functional and thermal differences.
Technical Context
The LM293PG4 implements open-collector output architecture with independent comparators sharing a common ground and VCC rail, supporting TTL/MOS/CMOS-compatible sinking outputs. Its input stage allows one input to reach VCC while the other remains within (V–) to (V+ – 2 V), enabling wide common-mode range operation without clamping diodes.
It operates over –25°C to +85°C ambient temperature, draws 0.45–2.5 mA total supply current depending on VCC, and maintains stable propagation delay under varying load capacitance (CL = 15 pF) and pull-up conditions-critical for precision threshold detection in noisy industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2 V to 30 V - supports direct integration into 3.3 V, 5 V, 12 V, and 24 V systems without level-shifting |
| Input Offset Voltage (max) | ±9 mV - defines minimum detectable differential signal at room temperature; impacts accuracy in low-voltage sensing |
| Response Time (typ) | 1.3 µs - enables reliable detection of fast transients in motor commutation or overvoltage events |
| Input Bias Current (max) | –400 nA - ensures minimal loading on high-impedance sensor sources like thermistors or photodiodes |
| Output Sink Current (min) | 6 mA - sufficient to drive LEDs, small relays, or logic inputs directly without external buffers |
| Common-Mode Input Range | 0 V to (VCC – 2 V) - permits ground-referenced inputs and simplifies design of battery-monitoring circuits |
| ESD Rating (HBM) | 2000 V - meets standard handling requirements for automated assembly and field service |
Pinout & Package
LM293PG4 is packaged in an 8-pin PDIP (Plastic Dual In-line Package) with body size 9.81 mm × 6.35 mm, through-hole mounting, and industry-standard lead pitch (2.54 mm). The package provides robust thermal performance (RθJA = 114.9 °C/W) and mechanical stability for industrial PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OUT | Comparator 1 output | Open-collector node requiring external pull-up; sinks current when comparator 1 triggers |
| 1IN− | Inverting input, Comp 1 | Negative reference input for first comparator; accepts signals down to ground |
| 1IN+ | Non-inverting input, Comp 1 | Signal input for first comparator; supports common-mode up to VCC − 2 V |
| GND | Ground reference | Common return path for both comparators and all external circuitry |
| 2IN+ | Non-inverting input, Comp 2 | Signal input for second comparator; electrically isolated from Comp 1 inputs |
| 2IN− | Inverting input, Comp 2 | Negative reference input for second comparator; shares same voltage range as 1IN− |
| 2OUT | Comparator 2 output | Independent open-collector output; can drive separate loads or logic domains |
| VCC | Positive supply rail | Single power source for both comparators; no separate bias required |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input common-mode range | Enables direct interface with sensors referenced to ground or VCC without attenuation networks |
| Open-collector outputs | Allows wired-OR logic, level translation across different supply domains, and flexible pull-up selection |
| Differential input voltage tolerance | ±36 V rating protects against transient overvoltage during ESD or inductive switching events |
| Low quiescent current | Sub-1 mA draw at 5 V supports always-on monitoring in battery-backed systems |
| Wide operating temperature | –25°C to +85°C range qualifies for use in consumer appliances and factory automation equipment |
Applications
| Server PSU Monitoring | Cordless Power Tool Control |
|---|---|
Use Scenario: Real-time detection of overvoltage, undervoltage, and fan failure in 12 V / 24 V server power supplies. IC Role / Device Role / Timing Role: Dual comparator performs independent voltage window checking and fault flag generation with <1.3 µs latency. Use Value: Prevents system damage by triggering shutdown before rail excursion exceeds safe margins; eliminates need for microcontroller polling. | Use Scenario: Battery pack voltage supervision and motor stall detection in 18 V brushless drill drivers. IC Role / Device Role / Timing Role: LM293PG4 compares cell voltages against thresholds and monitors back-EMF zero-crossings for commutation timing. Use Value: Enables precise cutoff at 15 V per cell and immediate stall response, extending battery life and preventing motor overheating. |
| Industrial Vacuum Robot Sensing | Building Automation HVAC Control |
Use Scenario: Pressure switch validation and vacuum level hysteresis control in cleanroom vacuum handling systems. IC Role / Device Role / Timing Role: One comparator detects vacuum onset; the other validates hold pressure with adjustable hysteresis via resistor feedback. Use Value: Ensures reliable part pickup/release cycles with immunity to noise from solenoid actuation and pump vibration. | Use Scenario: Temperature and humidity threshold crossing in smart thermostats and zone dampers. IC Role / Device Role / Timing Role: Dual comparator monitors analog outputs from NTC thermistors and capacitive humidity sensors against programmable setpoints. Use Value: Delivers deterministic on/off control without software overhead-critical for fail-safe HVAC safety interlocks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM393DR | SOIC-8 package; identical electrical specs but rated for 0°C to 70°C only; RθJA = 148.5 °C/W | Suitable for commercial-grade PCBs with surface-mount assembly; less suited for high-temp industrial enclosures | Select when board space is constrained and ambient temperature stays below 70°C. |
| LM2903P | Same PDIP-8 package; wider temp range (–40°C to +125°C); higher input offset (±15 mV max); 2.5 mA max ICC | Better thermal resilience for motor drives and automotive under-hood use; lower precision than LM293PG4 | Choose for extended temperature operation where ±15 mV offset is acceptable. |
Compared with LM393DR and LM2903P, LM293PG4 offers the optimal balance of precision (±9 mV offset), industrial temperature range (–25°C to +85°C), and through-hole manufacturability-making it ideal for cost-sensitive, medium-volume industrial controls where reliability and ease of rework matter.
Availability
LM293PG4 is available at Aetrix Electronics and suitable for server PSU monitoring, cordless power tool control, and building automation HVAC control requiring stable component supply across multi-year production cycles.
Supply support for LM293PG4 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 specializing in analog and embedded processing technologies, with decades of experience in precision signal conditioning and power management ICs.
The LM293 series belongs to TI's legacy dual comparator product line, engineered for robustness, wide supply range, and compatibility with legacy industrial designs-prioritizing reliability and long-term availability over ultra-low power or high-speed features.
FAQ
What is the maximum supply voltage for LM293PG4?
The absolute maximum supply voltage for LM293PG4 is 36 V, but its recommended operating range is 2 V to 30 V. Exceeding 30 V may degrade long-term reliability or trigger internal protection mechanisms. Always observe derating guidelines in TI's SLCS005AH datasheet, especially at elevated temperatures.
Does LM293PG4 support rail-to-rail input operation?
Yes, LM293PG4 supports rail-to-rail input common-mode range down to ground (0 V) and up to (VCC – 2 V). This allows direct interfacing with ground-referenced sensors and simplifies design in single-supply systems-no external level-shifting circuitry is needed for most industrial sensing applications.
Can LM293PG4 outputs be wire-ORed together?
Yes, LM293PG4 features open-collector outputs that can be safely wire-ORed using a shared pull-up resistor. This configuration enables logical OR functions (e.g., fault aggregation from multiple sensors) and simplifies interface to different logic families-provided total sink current remains within 25 mA per output.
What is the input offset voltage specification for LM293PG4?
LM293PG4 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 value directly affects threshold accuracy in precision voltage monitoring-designers should include margin in reference divider networks accordingly.
Is LM293PG4 pin-compatible with LM393 or LM2903?
LM293PG4 is pin-compatible with LM393 and LM2903 in PDIP-8 packages, sharing identical pinout and basic electrical behavior. However, LM2903 offers extended temperature range (–40°C to +125°C) and higher input offset (±15 mV), while LM393 is rated only to 70°C-verify thermal and precision requirements before substitution.
LM293PG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Series:
- -
- Packaging:
- Tube
- 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:
- Through Hole
- :
- 8-PDIP
LM293PG4 FAQ
1.How can I place an order for LM293PG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM293PG4 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 LM293PG4 reliable?
The price and inventory of LM293PG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM293PG4 is usually 5 days.
3.What payment methods are accepted for LM293PG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM293PG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM293PG4?
LM293PG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM293PG4 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 LM293PG4?
For technical support, including LM293PG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM293PG4 requirements.
6.How does Aetrix verify that LM293PG4 is sourced from the original manufacturer or authorized distributors?
All LM293PG4 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 LM293PG4 meets industry standards.
7.What is the process for return or replacement of LM293PG4?
All LM293PG4 units undergo pre-shipment inspection (PSI). If there is an issue with LM293PG4, 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 LM293PG4 part is unused and in its original packaging.
Return procedure for LM293PG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM293PG4 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
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