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Texas Instruments LM193DR
- Part No.:
- LM193DR
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LM193DR.pdf
- Description:
- IC COMPARATOR 2 DIFF 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:12,808
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Product details
Overview
LM193DR from Texas Instruments is a dual voltage comparator designed for single-supply operation across −55°C to +125°C, featuring ±9 mV max input offset voltage, 1.3 µs typical response time, 0.8–2.5 mA total supply current, rail-to-rail common-mode input range including ground, and open-collector outputs compatible with TTL/MOS/CMOS logic-used in vacuum robot motion control and server PSU overvoltage detection.
For engineers reviewing the LM193DR datasheet, LM193DR pinout, LM193DR application, or LM193DR equivalent, this page delivers verified electrical specs, SOIC-8 package details, real-world use cases in industrial power and automation systems, and two confirmed alternative comparators with documented functional and thermal differences.
Technical Context
The LM193DR implements two independent high-gain comparators with input stages tolerant of differential voltages up to ±36 V and common-mode inputs extending to VCC − 2 V. Its open-collector outputs require external pull-up resistors and support sinking up to 6 mA per channel at 1.5 V output swing.
Designed for wide-voltage single-supply operation (2–30 V), the device maintains stable quiescent current independent of supply voltage and enables direct interfacing with microcontroller GPIOs or logic gates without level-shifting circuitry.
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 industrial power rails without regulation. |
| Input Offset Voltage (max) | ±9 mV over full temperature range - sets minimum detectable voltage difference in precision threshold sensing. |
| Response Time (typ) | 1.3 µs at 100 mV overdrive - enables reliable detection of fast transients in motor drive fault monitoring. |
| Total Supply Current | 0.8–2.5 mA at 5–30 V - ensures low power consumption in battery-backed or energy-sensitive embedded systems. |
| Common-Mode Input Range | 0 V to VCC − 2 V - allows direct sensing of signals referenced to ground, such as current-sense amplifier outputs. |
| Output Sink Current | 6 mA at VOL = 1.5 V - drives standard LED indicators or interfaces directly with 74HC-series logic inputs. |
Pinout & Package
LM193DR is supplied in an 8-pin SOIC (Small Outline Integrated Circuit) package measuring 4.90 mm × 3.91 mm, with standard surface-mount footprint and gull-wing leads suitable for automated PCB assembly.
| 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; supports input up to VCC without damage. |
| GND | Ground reference | Return path for both comparators and internal biasing; must be low-impedance. |
| 2IN+ | Comparator 2 non-inverting input | Independent input for second threshold comparison; same voltage tolerance as 1IN+. |
| 2IN− | Comparator 2 inverting input | Accepts second reference; shares same ESD protection and input bias characteristics. |
| 2OUT | Comparator 2 output | Independent open-collector output; electrically isolated from 1OUT. |
| VCC | Positive supply | Single power rail for both comparators; no separate VEE required. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input capability | Enables direct sensing of 0 V–VCC signals without clamping diodes or external bias networks. |
| Open-collector outputs | Allows wired-OR logic, level translation, and flexible pull-up selection (e.g., 3.3 V MCU interface with 5 V supply). |
| Wide operating temperature | −55°C to +125°C rating supports deployment in aerospace, automotive under-hood, and industrial motor drive environments. |
| ESD robustness | 2 kV HBM rating reduces susceptibility to handling damage during manufacturing and field service. |
Applications
| Vacuum Robot Motion Control | Server PSU Overvoltage Protection |
|---|---|
Use Scenario: Detecting motor stall or position encoder faults in vacuum-compatible robotic arms using analog feedback signals. IC Role / Device Role / Timing Role: Dual comparator monitors two independent analog thresholds-one for current limit, one for position error-with sub-microsecond response. Use Value: Prevents mechanical damage by triggering immediate shutdown upon deviation beyond ±9 mV offset-limited thresholds. | Use Scenario: Monitoring DC output rails (e.g., +12 V, +5 V) in redundant server power supplies to initiate crowbar or latch-off on overvoltage events. IC Role / Device Role / Timing Role: LM193DR compares each rail against precision references; open-collector outputs feed OR-gated logic to system supervisor IC. Use Value: Ensures <1.3 µs fault detection latency, meeting IEC 62368-1 transient overvoltage response requirements. |
| Cordless Power Tool Battery Management | Factory Automation Sensor Interface |
Use Scenario: Real-time cell voltage balancing and pack overvoltage cutoff in 18 V–60 V Li-ion battery packs for cordless drills and saws. IC Role / Device Role / Timing Role: One comparator supervises top-cell voltage vs. 4.3 V reference; second monitors pack voltage vs. 63 V cutoff threshold. Use Value: Leverages rail-to-rail input to sense 0–60 V directly, eliminating resistor dividers and associated drift errors. | Use Scenario: Converting analog outputs from pressure, temperature, or proximity sensors into clean digital signals for PLC input modules. IC Role / Device Role / Timing Role: LM193DR acts as a programmable threshold detector; hysteresis added externally to reject noise in factory EMI environments. Use Value: Delivers consistent 6 mA sink capability to drive optocouplers or solid-state relays without additional driver stages. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2903DR | Wider temp range (−40°C to +125°C), higher max offset (±15 mV), identical SOIC-8 package and pinout. | Better suited for automotive engine control units where extended cold-start operation is required. | Select LM2903DR when ambient temperature exceeds −55°C or when AEC-Q100 qualification is mandated. |
| LM393DR | 0°C to +70°C rating, same ±9 mV offset spec, identical electrical behavior and SOIC-8 footprint. | Targeted at commercial-grade consumer electronics and office equipment with controlled thermal environments. | Choose LM393DR for cost-sensitive, non-industrial applications where full military-grade temp range is unnecessary. |
Compared with LM2903DR and LM393DR, the LM193DR uniquely supports −55°C operation while maintaining identical pin compatibility and open-collector drive strength-making it the only option qualified for space-constrained, high-reliability aerospace sensor nodes requiring extreme cold tolerance.
Availability
LM193DR is available at Aetrix Electronics and suitable for vacuum robot motion control, server PSU overvoltage protection, and cordless power tool battery management requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LM193DR 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 LM193DR belongs to TI's legacy dual comparator product line, engineered specifically for high-reliability applications demanding extended temperature operation, robust input stage design, and compatibility with legacy industrial control architectures.
FAQ
What is the maximum supply voltage for LM193DR?
The LM193DR supports a maximum supply voltage of 30 V, as specified in its absolute maximum ratings. This allows direct operation from unregulated 24 V industrial rails or 28 V avionics buses without external regulation. Exceeding 30 V risks permanent damage, and operation above 30 V is not supported-even briefly-per TI's SLCS005AH datasheet revision April 2025.
Does LM193DR have rail-to-rail input capability?
Yes, the LM193DR features rail-to-rail input common-mode range down to ground (0 V) and up to VCC − 2 V. This permits direct connection of sensors or signal sources referenced to ground-such as shunt-based current monitors-without level-shifting circuitry. The datasheet confirms this behavior applies across the full −55°C to +125°C operating range for LM193DR.
Can LM193DR outputs drive LEDs directly?
Yes, each LM193DR output can sink up to 6 mA with a 1.5 V saturation voltage, sufficient to drive standard indicator LEDs at low-to-moderate brightness. A series resistor (e.g., 1 kΩ with 5 V pull-up) limits current to ~4.5 mA, staying within safe operating limits. Do not exceed 6 mA per output or 20 mA total device current, as specified in section 5.8 of the LM193DR datasheet.
What is the input offset voltage specification for LM193DR?
The LM193DR has a maximum input offset voltage of ±9 mV over its full operating temperature range of −55°C to +125°C. At 25°C, typical offset is ±2 mV. This value defines the smallest differential input voltage that guarantees correct output state transition and is critical for precision threshold detection in applications like battery cell monitoring or sensor zero-crossing detection.
Is LM193DR pin-compatible with LM393DR?
Yes, LM193DR and LM393DR share identical SOIC-8 pinout, electrical characteristics (including ±9 mV offset and 1.3 µs response), and package dimensions. They differ only in temperature rating: LM193DR operates from −55°C to +125°C, while LM393DR is rated 0°C to +70°C. No PCB layout changes are needed when substituting LM193DR for LM393DR in existing designs requiring extended temperature support.
LM193DR 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, 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:
- -55°C ~ 125°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 8-SOIC
LM193DR FAQ
1.How can I place an order for LM193DR through Aetrix?
Please submit a Request for Quotation (RFQ) for LM193DR 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 LM193DR reliable?
The price and inventory of LM193DR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM193DR is usually 5 days.
3.What payment methods are accepted for LM193DR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM193DR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM193DR?
LM193DR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM193DR 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 LM193DR?
For technical support, including LM193DR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM193DR requirements.
6.How does Aetrix verify that LM193DR is sourced from the original manufacturer or authorized distributors?
All LM193DR 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 LM193DR meets industry standards.
7.What is the process for return or replacement of LM193DR?
All LM193DR units undergo pre-shipment inspection (PSI). If there is an issue with LM193DR, 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 LM193DR part is unused and in its original packaging.
Return procedure for LM193DR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM193DR Tags
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