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Texas Instruments LM111HLQMLV
- Part No.:
- LM111HLQMLV
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- TO-99-8 Metal Can
- Datasheet:
-
LM111HLQMLV.pdf
- Description:
- VOLTAGE COMPARATOR 8-TO-99 -55 T
- Quantity:
- Payment:
- Shipping:
Inventory:2,166
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Product details
Overview
LM111HLQMLV from Texas Instruments is a radiation-hardened voltage comparator designed for space and high-reliability military systems. It delivers 200 nA max input bias current, ±30 V differential input range, 50 mA output sink capability, and operates from single 5V to dual ±15V supplies. Its strobe function, offset null capability, and ground-isolated inputs/outputs support precision threshold detection in satellite power monitoring and avionics fault-sensing circuits.
For engineers reviewing the LM111HLQMLV datasheet, LM111HLQMLV pinout, LM111HLQMLV application, or LM111HLQMLV equivalent, this page provides verified radiation-tolerant comparator specifications, TO-99 and CDIP package details, MIL-STD-883 qualified test data, and direct alternatives for high-dose-rate (50 krad(Si)) and ELDRS-free (100 krad(Si)) mission-critical designs.
Technical Context
The LM111HLQMLV implements an open-collector NPN output stage with internal strobe control and balance terminals for external offset adjustment. Its input stage uses matched transistor pairs to achieve low input offset voltage (±3 mV) and ultra-low input bias current (≤200 nA), enabling high-impedance sensing without loading source signals.
It supports wide common-mode input range (±30 V), operates across −55°C to +125°C, and maintains functionality under total ionizing dose up to 100 krad(Si) with no enhanced low-dose-rate sensitivity (ELDRS-free). Output can drive relays, lamps, or TTL/DTL/RTL logic directly.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Bias Current | 200 nA max over temperature - enables high-Z sensor interfacing without signal attenuation |
| Differential Input Voltage Range | ±30 V - supports direct measurement across high-voltage rails or floating sources |
| Output Sink Current | 50 mA - drives electromechanical loads (relays, lamps) without external buffers |
| Supply Voltage Range | Single 5V to ±15V - interoperable with logic and analog supply domains |
| Response Time | 300 ns (min) at 5 mV overdrive - suitable for fast fault detection in power systems |
| Offset Voltage | ±3 mV max - ensures accurate threshold comparison with minimal calibration |
| Operating Temperature | −55°C to +125°C - qualified for extended-range aerospace and defense environments |
| Radiation Tolerance | 100 krad(Si) ELDRS-free - validated for long-duration space missions per MIL-STD-883 |
Pinout & Package
LM111HLQMLV is available in hermetically sealed TO-99 metal can (Package Number LMC0008C) and ceramic DIP (CDIP, Package Number NAB0008A), both rated for space-grade reliability. Pin 4 connects to case for shielding and thermal conduction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input (IN−) | Accepts reference or sensed signal for threshold comparison |
| 2 | Non-Inverting Input (IN+) | Accepts variable input; comparator output goes high when IN+ > IN− |
| 3 | Balance (BALANCE) | Connects to potentiometer wiper for manual offset nulling |
| 4 | Case / Shield | Internally connected to metal can; must be grounded for EMI suppression |
| 5 | Balance/Strobe (BALANCE/STROBE) | Enables external gating of comparator output; pulled high disables output |
| 6 | Ground (GND) | Reference node for single-supply operation; isolated from system ground |
| 7 | Output (OUTPUT) | Open-collector NPN collector - requires external pull-up to V+ or logic rail |
| 8 | Positive Supply (V+) | Connects to positive rail; supports up to +30 V absolute max |
Key Features
| Feature | Design Value |
|---|---|
| Strobe capability | Hardware-gated output disable via BALANCE/STROBE pin - enables synchronized sampling in multi-channel systems |
| Offset voltage null | External trim via BALANCE and BALANCE/STROBE pins - achieves <±1 mV residual offset after calibration |
| Ground-isolated I/O | Inputs and output referenced independently to V+, V−, or GND - supports floating measurements in battery management |
| High-voltage output drive | 50 V output swing capability relative to negative supply - interfaces directly with 28 V aircraft buses or relay coils |
| Low-dose-rate immunity | No ELDRS effect confirmed per MIL-STD-883 Method 1019 Condition D - ensures stable performance in GEO orbit |
Applications
| Power System Monitoring | Satellite Bus Voltage Supervision |
|---|---|
Use Scenario: Real-time detection of undervoltage/overvoltage events on spacecraft primary power bus. IC Role / Device Role / Timing Role: Precision comparator comparing bus voltage against trimmed reference to trigger fault latching. Use Value: ±3 mV offset and 300 ns response ensure sub-millisecond fault response with no false trips from noise or drift. | Use Scenario: Redundant voltage validation across multiple solar array regulators before enabling load switching. IC Role / Device Role / Timing Role: Strobe-synchronized comparator verifying regulator outputs during power-up sequencing. Use Value: BALANCE/STROBE pin allows time-gated comparison, eliminating transient-induced errors during startup. |
| Avionics Fault Detection | Radiation-Hardened Sensor Interface |
Use Scenario: Monitoring hydraulic pressure transducer output for out-of-range conditions in fly-by-wire systems. IC Role / Device Role / Timing Role: High-Z input stage compares sensor signal against programmable thresholds without loading bridge circuitry. Use Value: 200 nA input bias current prevents gain error in millivolt-level Wheatstone bridge outputs. | Use Scenario: Interfacing gamma-ray detector pulse amplifiers in nuclear instrumentation payloads. IC Role / Device Role / Timing Role: Radiation-tolerant front-end comparator converting analog pulses to digital logic levels. Use Value: 100 krad(Si) ELDRS-free rating guarantees functional integrity after cumulative space radiation exposure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM111QMLV | Same die, identical radiation specs (50 krad(Si) high-dose-rate + 100 krad(Si) ELDRS-free), but offered in CDIP only (NAB0008A) | No TO-99 option; less thermal mass for rapid transient response | Select when board layout prioritizes surface-mount compatibility and lower profile over metal-can shielding |
| LM111H | Commercial-grade version; no radiation qualification, −55°C to +125°C temp range retained, same pinout and electrical specs | Not suitable for space or nuclear environments; limited to ground-based high-reliability systems | Select for cost-sensitive terrestrial applications where radiation tolerance is unnecessary |
Compared with LM111QMLV and LM111H, the LM111HLQMLV uniquely combines TO-99 packaging for superior EMI shielding and thermal dissipation with full QML-V certification for both high-dose-rate and ELDRS-free operation-making it the only choice for crewed spacecraft power sequencers requiring mechanical robustness and radiation margin.
Availability
LM111HLQMLV is available at Aetrix Electronics and suitable for satellite bus supervision, avionics fault detection, and radiation-hardened sensor interface applications requiring stable component supply across extended product lifecycles.
Supply support for LM111HLQMLV 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-grade component development.
The LM111 family was engineered specifically for high-reliability analog signal conditioning in radiation-exposed environments, targeting precision threshold detection where failure is not an option.
FAQ
What is the maximum allowable differential input voltage for LM111HLQMLV?
The LM111HLQMLV supports a differential input voltage range of ±30 V, as specified in Absolute Maximum Ratings. This allows direct comparison of signals referenced to different supply rails or floating sources without external level-shifting circuitry. Exceeding ±30 V risks permanent damage to the input transistors, regardless of common-mode voltage.
Does LM111HLQMLV require external pull-up resistors on its output?
Yes, LM111HLQMLV features an open-collector NPN output stage and requires an external pull-up resistor to V+ or another logic rail. Typical values range from 1 kΩ to 10 kΩ depending on speed and load requirements. Without pull-up, the output remains in high-impedance state and cannot drive logic-high levels.
How is the strobe function implemented on LM111HLQMLV?
The strobe function is controlled via the BALANCE/STROBE pin (Pin 5). When pulled low (≤0.7 V), the output is enabled normally. When pulled high (≥2.0 V), the output transistor is disabled, forcing the collector into high-impedance state. This allows time-gated comparisons in synchronized systems without additional logic gates.
What radiation testing standards apply to LM111HLQMLV?
LM111HLQMLV is qualified per MIL-STD-883 Method 1019 (Condition A for high-dose-rate and Condition D for ELDRS-free testing), with full Group A and Group B testing including static/dynamic functional tests across −55°C to +125°C. It meets SMD 5962-8687701 and 5962L0052401 requirements for 50 krad(Si) high-dose-rate and 100 krad(Si) ELDRS-free operation.
Can LM111HLQMLV operate from a single 5V supply?
Yes, LM111HLQMLV is explicitly rated for single 5V operation per its datasheet. The input common-mode range extends to within 1.5 V of V− (GND), and the output can swing to within ~0.4 V of GND when sinking 8 mA. For optimal performance, tie V− to GND and use the GND pin (Pin 6) as the reference node.
LM111HLQMLV Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- TO-99-8 Metal Can
- Series:
- LM111
- Packaging:
- Tray
- Product Status:
- Active
- Type:
- General Purpose
- Number of Elements:
- 1
- Output Type:
- Open-Collector
- Voltage - Supply, Single/Dual (±):
- 5V ~ 30V, ±2.5V ~ 15V
- :
- 3mV @ ±15V
- Voltage - Input Offset (Max):
- 0.1µA @ ±15V
- Current - Input Bias (Max):
- -
- Current - Output (Typ):
- 5mA, 6mA
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- 200ns (Typ)
- Propagation Delay (Max):
- -
- Hysteresis:
- -55°C ~ 125°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Through Hole
- :
- TO-99-8
LM111HLQMLV FAQ
1.How can I place an order for LM111HLQMLV through Aetrix?
Please submit a Request for Quotation (RFQ) for LM111HLQMLV 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 LM111HLQMLV reliable?
The price and inventory of LM111HLQMLV are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM111HLQMLV is usually 5 days.
3.What payment methods are accepted for LM111HLQMLV?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM111HLQMLV transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM111HLQMLV?
LM111HLQMLV orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM111HLQMLV 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 LM111HLQMLV?
For technical support, including LM111HLQMLV datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM111HLQMLV requirements.
6.How does Aetrix verify that LM111HLQMLV is sourced from the original manufacturer or authorized distributors?
All LM111HLQMLV 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 LM111HLQMLV meets industry standards.
7.What is the process for return or replacement of LM111HLQMLV?
All LM111HLQMLV units undergo pre-shipment inspection (PSI). If there is an issue with LM111HLQMLV, 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 LM111HLQMLV part is unused and in its original packaging.
Return procedure for LM111HLQMLV:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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