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Texas Instruments LM119WGRQMLV
- Part No.:
- LM119WGRQMLV
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 10-CSOIC (0.241", 6.12mm Width)
- Datasheet:
-
LM119WGRQMLV.pdf
- Description:
- HIGH SPEED DUAL COMPARATOR 10-CF
- Quantity:
- Payment:
- Shipping:
Inventory:2,712
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Product details
Overview
LM119WGRQMLV from Texas Instruments is a radiation-hardened, high-speed dual comparator designed for space and defense applications requiring operation across ±15V or single 5V supplies. It delivers 80 ns typical response time, 10.5 kV/V voltage gain, ≤3.8 mV input offset voltage, and drives 25 mA loads with uncommitted collector outputs. It serves in precision window detection and relay control circuits within satellite power management systems.
For engineers reviewing the LM119WGRQMLV datasheet, LM119WGRQMLV pinout, LM119WGRQMLV application, or LM119WGRQMLV equivalent, this page provides verified radiation-tolerant performance data, CLGA package terminal mapping, QMLV qualification context, and direct alternatives for high-reliability analog signal conditioning in extreme environments.
Technical Context
The LM119WGRQMLV implements two independent, open-collector comparators with rail-to-rail input capability (±12 V common-mode range at ±15 V supply) and high slew rate inputs. Its architecture supports isolation from system ground via separate GND1/GND2 pins and tolerates differential input voltages up to ±5 V.
It operates across −55°C to +125°C, meets MIL-STD-883 Class B requirements, and is qualified to 100 krad(Si) total ionizing dose with ELDRS-free performance. The device uses a monolithic bipolar process optimized for speed and radiation hardness, not CMOS or BiCMOS.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | ±15 V or single 5 V - enables compatibility with legacy military logic rails and modern low-voltage subsystems without level-shifting. |
| Response Time | 80 ns typical at ±15 V - ensures fast decision-making in fault-detection and timing-critical protection circuits. |
| Input Offset Voltage | ±3.8 mV max at 25°C - guarantees accurate threshold comparison in precision sensor interface and window detector designs. |
| Output Drive Capability | 25 mA sink per channel - directly interfaces with relays, LEDs, and TTL/DTL/RTL logic without external drivers. |
| Radiation Tolerance | 100 krad(Si) TID, ELDRS-free - validated for long-duration missions in Earth orbit and deep space where cumulative dose and low-dose-rate effects are critical. |
| Operating Temperature | −55°C to +125°C - supports deployment in unheated satellite bays and high-temperature avionics enclosures. |
| Input Bias Current | 0.47 µA max at ±15 V - minimizes loading error on high-impedance reference or sensor networks. |
Pinout & Package
LM119WGRQMLV is supplied in a 10-pin CFP (NAC) ceramic flatpack package (Package Number NAC0010A), with case connected to Pin 5 (V−). The package is hermetically sealed and qualified for space-grade reliability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | IN− 1 | Inverting input of Comparator 1 - referenced to GND1; accepts signals down to −12 V at ±15 V supply. |
| 2 | IN+ 1 | Non-inverting input of Comparator 1 - referenced to GND1; supports common-mode range up to +12 V. |
| 3 | GND 1 | Ground reference for Comparator 1 inputs and output stage - electrically isolated from GND2 for differential signaling flexibility. |
| 4 | OUTPUT 1 | Open-collector output of Comparator 1 - requires external pull-up; sinks up to 25 mA to GND1. |
| 5 | V− | Negative supply terminal - case-connected; must be tied to system negative rail or ground depending on configuration. |
| 6 | IN− 2 | Inverting input of Comparator 2 - referenced to GND2; enables independent signal domain partitioning. |
| 7 | IN+ 2 | Non-inverting input of Comparator 2 - referenced to GND2; supports full ±12 V common-mode swing. |
| 8 | GND 2 | Ground reference for Comparator 2 inputs and output stage - isolated from GND1 to prevent ground-loop coupling. |
| 9 | OUTPUT 2 | Open-collector output of Comparator 2 - independently controllable; sinks up to 25 mA to GND2. |
| 10 | V+ | Positive supply terminal - supplies both comparators; operates from +5 V to +18 V relative to V−. |
Key Features
| Feature | Design Value |
|---|---|
| Two independent comparators | Enables dual-threshold monitoring (e.g., overvoltage + undervoltage) in one package without cross-talk or shared reference constraints. |
| Uncommitted collector outputs | Permits flexible interfacing with diverse logic families (TTL, DTL, RTL), lamps, relays, or custom pull-up networks at different voltage levels. |
| Input/output isolation from system ground | Supports floating-sense configurations in high-side current monitoring or isolated power-supply feedback loops. |
| High common-mode slew rate | Maintains accurate comparison during fast-rising transients on noisy power rails or motor drive lines. |
| ELDRS-free 100 krad(Si) qualification | Eliminates need for lot-specific low-dose-rate testing; ensures predictable parametric stability across mission lifetime in geosynchronous orbit. |
Applications
| Power Supply Monitor | Satellite Bus Voltage Supervisor |
|---|---|
Use Scenario: Monitoring primary bus voltage in LEO satellite power distribution units to trigger shutdown if voltage exceeds 32 V or drops below 26 V. IC Role / Device Role / Timing Role: Dual comparator configured as window detector with hysteresis; each channel compares against precision references derived from radiation-hardened voltage dividers. Use Value: 80 ns response ensures immediate reaction to catastrophic overvoltage events before downstream FETs fail, preserving mission-critical subsystems. | Use Scenario: Supervising redundant 28 V DC bus pairs in spacecraft command & data handling (C&DH) modules under thermal vacuum and radiation exposure. IC Role / Device Role / Timing Role: Independent comparator channels monitor each bus with separate GND1/GND2 references to avoid ground-bounce-induced false trips during simultaneous load switching. Use Value: ELDRS-free behavior guarantees stable trip thresholds after 10+ years in orbit, eliminating recalibration requirements and reducing ground-segment operational overhead. |
| Launch Vehicle Pyro Sequencer | Radiation-Hardened Relay Driver |
Use Scenario: Controlling pyrotechnic initiators during multi-stage separation events where timing margins are sub-millisecond and EMI immunity is non-negotiable. IC Role / Device Role / Timing Role: High-speed comparator latches flight computer commands and validates safe/arm conditions before enabling firing circuits. Use Value: 25 mA output sink drives solid-state relays directly, removing discrete driver stages and associated failure modes in safety-critical chains. | Use Scenario: Driving high-current relays in radiation-hardened test equipment used for qualification of other space-grade components. IC Role / Device Role / Timing Role: Open-collector outputs interface with 48 V relay coils via external pull-ups; inputs accept TTL-level enable signals referenced to isolated grounds. Use Value: Input isolation prevents ground-loop noise from corrupting logic-level signals in mixed-signal test benches, improving measurement repeatability by >12 dB. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM119HRQMLV | TO-100 metal-can package (10-pin), same electrical specs and QMLV radiation rating, but larger footprint and lower thermal resistance (31°C/W vs. 132°C/W). | Better suited for conduction-cooled boards or applications requiring mechanical ruggedness over compactness. | Select when board layout allows larger TO-100 footprint and thermal management prioritizes junction-to-case conduction over surface-area-limited convection. |
| LM119JRQMLV | CDIP-14 package, identical radiation spec and speed, but adds two unused pins and higher pin count; includes internal compensation not present in LM119WGRQMLV. | Preferred for legacy board designs using CDIP footprints or where extra pins simplify grounding schemes. | Choose only when reusing existing CDIP-14 layouts or when the additional pins provide measurable noise immunity benefits in high-EMI launch environments. |
Compared with LM119HRQMLV and LM119JRQMLV, the LM119WGRQMLV offers the smallest PCB area (CFP-10), highest packaging density, and lowest mass-critical for volume-constrained satellite payloads-while maintaining identical radiation tolerance and comparator performance.
Availability
LM119WGRQMLV is available at Aetrix Electronics and suitable for satellite power supervision, launch vehicle sequencers, radiation-hardened test instrumentation, and defense-grade analog signal conditioning requiring stable component supply across extended product lifecycles.
Supply support for LM119WGRQMLV 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 heritage in space-qualified components and military-grade reliability standards.
The LM119QML family was developed specifically for high-reliability analog signal comparison in radiation-intensive environments, targeting satellite subsystems, missile guidance, and nuclear instrumentation where parametric stability under ionizing dose is mandatory.
FAQ
What is the maximum operating temperature range for the LM119WGRQMLV?
The LM119WGRQMLV is fully specified and qualified for continuous operation from −55°C to +125°C ambient temperature. This range is validated per MIL-STD-883 Test Method 1010.8 and applies across all electrical parameters in the datasheet, including input offset voltage, response time, and output saturation voltage. The LM119WGRQMLV maintains functionality even during thermal cycling between these extremes, making it suitable for unheated satellite compartments and high-temperature avionics bays.
Does the LM119WGRQMLV require external pull-up resistors on its outputs?
Yes, the LM119WGRQMLV features open-collector outputs that require external pull-up resistors to define the high-state voltage level. Each output (OUTPUT 1 and OUTPUT 2) can sink up to 25 mA to its respective ground (GND1 or GND2). Pull-up values are selected based on load voltage, speed requirements, and fan-out needs; typical values range from 1 kΩ to 10 kΩ when interfacing with 5 V or 28 V logic or relay coils. The LM119WGRQMLV does not include internal pull-ups.
How is radiation hardness verified for the LM119WGRQMLV?
Radiation hardness for the LM119WGRQMLV is verified through MIL-STD-883 Method 1019 (Total Ionizing Dose) at 100 krad(Si) with ELDRS-free characterization per Test Condition D. Post-irradiation testing confirms no degradation beyond specification limits for key parameters including input offset voltage (±4.0 mV max), input bias current (≤1.0 µA), and response time. Data sheets explicitly state "ELDRS Free 100 krad(Si)" and list SMD 5962-9679802 qualification, confirming the LM119WGRQMLV's suitability for long-duration space missions without low-dose-rate sensitivity concerns.
Can the LM119WGRQMLV operate from a single 5 V supply?
Yes, the LM119WGRQMLV is fully functional with a single 5 V supply (V+ = 5 V, V− = 0 V). In this configuration, it delivers 80 ns typical response time, ±3.8 mV input offset voltage, and 4.0 mA output sink capability at 0.4 V saturation. The device maintains rail-to-rail input operation (1.0 V to 3.0 V common-mode range) and supports TTL-compatible output interfacing. This mode is explicitly documented in the Electrical Characteristics tables under "+VCC = 5V, −VCC = 0V" test conditions.
What is the pin 5 connection on the LM119WGRQMLV and why is it important?
Pin 5 on the LM119WGRQMLV is the V− terminal and is internally connected to the metal case of the CFP (NAC) package. This mechanical tie mandates that Pin 5 be connected to the most negative potential in the circuit-either system ground (in single-supply use) or the negative rail (in dual-supply use). Failure to properly connect Pin 5 risks violating absolute maximum ratings, causing excessive case leakage, or compromising radiation hardness due to improper shielding. The LM119WGRQMLV datasheet explicitly states "Case is connected to pin 5 (V−)" in the Connection Diagrams section.
LM119WGRQMLV Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 10-CSOIC (0.241", 6.12mm Width)
- Series:
- -
- Packaging:
- Tray
- Product Status:
- Active
- Type:
- General Purpose
- Number of Elements:
- 2
- Output Type:
- Open-Collector, DTL, RTL, TTL
- Voltage - Supply, Single/Dual (±):
- 36V
- :
- 4mV @ ±15V
- Voltage - Input Offset (Max):
- 0.5µA @ ±15V
- Current - Input Bias (Max):
- -
- Current - Output (Typ):
- 4.5mA, 11.5mA
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- -
- Propagation Delay (Max):
- -
- Hysteresis:
- -55°C ~ 125°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 10-CFP
LM119WGRQMLV FAQ
1.How can I place an order for LM119WGRQMLV through Aetrix?
Please submit a Request for Quotation (RFQ) for LM119WGRQMLV 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 LM119WGRQMLV reliable?
The price and inventory of LM119WGRQMLV are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM119WGRQMLV is usually 5 days.
3.What payment methods are accepted for LM119WGRQMLV?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM119WGRQMLV transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM119WGRQMLV?
LM119WGRQMLV orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM119WGRQMLV 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 LM119WGRQMLV?
For technical support, including LM119WGRQMLV datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM119WGRQMLV requirements.
6.How does Aetrix verify that LM119WGRQMLV is sourced from the original manufacturer or authorized distributors?
All LM119WGRQMLV 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 LM119WGRQMLV meets industry standards.
7.What is the process for return or replacement of LM119WGRQMLV?
All LM119WGRQMLV units undergo pre-shipment inspection (PSI). If there is an issue with LM119WGRQMLV, 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 LM119WGRQMLV part is unused and in its original packaging.
Return procedure for LM119WGRQMLV:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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