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Texas Instruments LM119 MD8
- Part No.:
- LM119 MD8
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- Die
- Datasheet:
-
LM119 MD8.pdf
- Description:
- HIGH SPEED DUAL COMPARATOR 0-DIE
- Quantity:
- Payment:
- Shipping:
Inventory:1,314
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Product details
Overview
LM119 MD8 from Texas Instruments is a radiation-hardened, high-speed dual comparator IC designed for precision analog signal comparison in space and defense systems. It features two independent comparators, 80 ns typical response time at ±15 V, ≤1 μA input bias current over temperature, and operates from single 5 V or dual ±15 V supplies. Its uncommitted collector outputs drive TTL/DTL/RTL loads and relays up to 25 mA - used in satellite power sequencing and missile guidance window detectors.
For engineers reviewing the LM119 MD8 datasheet, LM119 MD8 pinout, LM119 MD8 application, or LM119 MD8 equivalent, this page delivers verified electrical specs, radiation qualification status (100 krad(Si), ELDRS-free), package mapping to die form factor, and real-world design context for high-reliability analog decision circuits.
Technical Context
The LM119 MD8 implements two independent open-collector comparators with rail-to-rail input common-mode range (±12 V at ±15 V supply) and high common-mode slew rate. Its architecture supports isolation of inputs and outputs from system ground - critical for floating-sense applications in spacecraft power distribution units.
It is specified across −55°C to +125°C ambient, with absolute maximum ratings including 36 V total supply voltage and ±5 V differential input voltage. The device meets MIL-STD-883 Class B testing requirements and is qualified per SMD 5962-9679801 (High Dose Rate) and 5962-9679802 (ELDRS-Free) standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | Single 5 V or dual ±15 V - enables direct interface with logic and analog rails without level-shifting. |
| Response Time | 80 ns typical at ±15 V - supports high-speed threshold detection in telemetry sampling and fault-response loops. |
| Input Bias Current | ≤1 μA max over full temperature range - minimizes loading on high-impedance sensor sources like radiation monitor dividers. |
| Input Offset Voltage | ±3.8 mV max (±6.8 mV over temp) - ensures accurate window detection in precision voltage monitoring circuits. |
| Output Drive Capability | 25 mA sink per output - directly drives relays, LEDs, and TTL-compatible latches without external buffers. |
| Radiation Tolerance | 100 krad(Si) total ionizing dose, ELDRS-free - qualified for long-duration missions in GEO and deep-space environments. |
| Operating Temperature | −55°C to +125°C - validated for use in avionics bays and launch-stage electronics without derating. |
Pinout & Package
DIE form factor (DIESALE package, 0-pin count); no leadframe or molded body. Requires custom bonding and substrate mounting per JEDEC TRAY (5+1) carrier configuration. Not intended for through-hole or surface-mount reflow assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V+ | Positive Supply | Connects to +5 V or +15 V rail; powers both comparators and output stages. |
| V− | Negative Supply | Required for dual-supply operation; ties to −15 V or GND for single-supply mode. |
| GND 1 / GND 2 | Analog Ground Reference | Separate ground pins reduce crosstalk between comparator sections in mixed-signal layouts. |
| IN+ 1 / IN+ 2 | Non-Inverting Input | Accepts input signals up to ±12 V common-mode range; high-impedance node for sensor interfaces. |
| IN− 1 / IN− 2 | Inverting Input | Paired with respective IN+ for differential threshold comparison; matched offset performance. |
| OUTPUT 1 / OUTPUT 2 | Open-Collector Output | Sinks current to V− or GND; requires external pull-up for logic-level output or relay coil drive. |
| N/C (multiple) | No Connect | Unused bond pads; must remain unconnected to avoid parasitic coupling or latch-up risk. |
Key Features
| Feature | Design Value |
|---|---|
| Two independent comparators | Enables simultaneous high/low threshold detection in window comparator topologies without inter-channel delay skew. |
| Uncommitted collector outputs | Supports flexible interfacing - pull-up to 3.3 V, 5 V, or 15 V rails; direct relay or optocoupler drive without level shifters. |
| Input/output ground isolation | Allows comparator sections to operate referenced to different ground domains - essential for isolated bus monitoring in power converters. |
| High common-mode slew rate | Maintains accurate comparison during fast transients (e.g., ESD events or switching noise), preventing false triggering. |
| Radiation-hardened construction | Qualified to 100 krad(Si) TID and ELDRS-free per MIL-STD-883 Method 1019 - eliminates post-launch parameter drift in orbit. |
Applications
| Power Sequencing Monitor | Satellite Bus Voltage Supervisor |
|---|---|
Use Scenario: Verifying correct ramp-up order of FPGA core, I/O, and analog rails during satellite power-on reset. IC Role / Device Role / Timing Role: Dual comparator performs independent high/low threshold checks on each rail with <80 ns latency. Use Value: Prevents latch-up or configuration corruption by halting boot sequence if any rail deviates beyond ±3% window. |
Use Scenario: Continuous monitoring of 28 V primary bus voltage in LEO communication payload. IC Role / Device Role / Timing Role: One comparator detects undervoltage (<24.5 V), the other overvoltage (>31.5 V) with hysteresis. Use Value: Triggers immediate bus isolation via solid-state relay before downstream DC-DC converters fail catastrophically. |
| Missile Guidance Window Detector | Radiation Sensor Threshold Comparator |
Use Scenario: Detecting valid seeker head lock-on signal within precise amplitude and timing window during terminal phase. IC Role / Device Role / Timing Role: LM119 MD8 compares RF envelope against upper/lower thresholds synchronized to pulse-Doppler timing. Use Value: Rejects clutter and jamming signals by enforcing strict 200 ns window validity - enabled by sub-100 ns propagation delay. |
Use Scenario: Converting Geiger-Müller tube pulse counts into digital alerts when radiation flux exceeds mission safety limits. IC Role / Device Role / Timing Role: Compares integrator output against programmable reference; output triggers interrupt on exceedance. Use Value: Achieves <1 μA input bias to avoid loading ultra-high-impedance charge integrators - preserving signal fidelity in low-flux conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM119J-QMLV | CDIP-14 package with 14-pin through-hole leads; identical die, but packaged for manual prototyping and legacy board assembly. | Requires PCB footprint change and wave-solder process; not suitable for die-level integration or hybrid microcircuit modules. | Select when mechanical robustness and test accessibility outweigh size/weight constraints in ground-test hardware. |
| LM119W-SMD | CFP-10 ceramic flatpack; same radiation spec, but smaller footprint and hermetic seal - optimized for high-frequency layout stability. | Better high-frequency immunity due to shorter internal bond wires; preferred for RF-adjacent comparator placement in transceiver modules. | Choose for space-constrained RF subsystems where EMI rejection and thermal cycling reliability are prioritized over die-level customization. |
Compared with LM119 MD8, LM119J-QMLV offers plug-in compatibility for bench validation but adds 3.5 g mass and 12 mm² footprint, while LM119W-SMD provides superior RF immunity and hermeticity at the cost of fixed lead geometry - making LM119 MD8 optimal for custom ASIC co-packaging and ultra-low-mass die attach in multi-chip modules.
Availability
LM119 MD8 is available at Aetrix Electronics and suitable for satellite power sequencing, missile guidance subsystems, and radiation-hardened telemetry requiring stable component supply across extended production lifecycles and obsolescence transitions.
Supply support for LM119 MD8 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 high-reliability aerospace components.
The LM119QML product line was developed specifically for military and space applications demanding radiation tolerance, extended temperature operation, and MIL-STD-883 qualification - targeting guidance, navigation, and power control systems where failure is not an option.
FAQ
What is the radiation qualification status of the LM119 MD8?
The LM119 MD8 is qualified to 100 krad(Si) total ionizing dose (TID) under High Dose Rate (HDR) and ELDRS-Free conditions per MIL-STD-883 Method 1019. It meets SMD 5962-9679801 (HDR) and 5962-9679802 (ELDRS-Free) specifications, with post-radiation limits verified at 25°C. This makes LM119 MD8 suitable for GEO, MEO, and deep-space missions where cumulative radiation exposure exceeds 50 krad(Si).
Can the LM119 MD8 operate from a single 5 V supply?
Yes, the LM119 MD8 is fully specified for single 5 V operation, with input common-mode range from 1.0 V to 3.0 V and output saturation voltage of 0.4 V at 4.0 mA load. Its design allows direct interface with 5 V logic families and microcontroller ADC references without level translation - confirmed in LM119-SMD Electrical Characteristics tables under +VCC = 5 V conditions.
What does "DIESALE" packaging mean for LM119 MD8?
"DIESALE" indicates that LM119 MD8 is supplied as an unpackaged silicon die (no leadframe, mold compound, or standard package). It ships in JEDEC TRAY (5+1) format with 192 units per tray and requires wire bonding or flip-chip attachment to a custom substrate. This enables integration into hybrid microcircuits, multi-chip modules, or radiation-hardened ceramic packages tailored to specific thermal and mechanical requirements.
How does the LM119 MD8 compare to the commercial LM119 in terms of speed and accuracy?
The LM119 MD8 maintains identical core performance to the commercial LM119: 80 ns typical response time at ±15 V, ±3.8 mV input offset voltage, and ≤1 μA input bias current. However, LM119 MD8 adds radiation hardening, extended temperature validation (−55°C to +125°C), and MIL-STD-883 Group B testing - with no trade-off in speed or DC precision. Parameter spreads remain consistent across both versions per TI's SMD 5962-9679801/02 data sheets.
Is there a recommended layout practice for minimizing noise coupling in LM119 MD8 die applications?
For LM119 MD8 die integration, TI recommends separate ground planes for analog inputs (GND 1/GND 2) tied at a single point near the die, guard rings around IN+/IN− traces, and dedicated V+ and V− supply lines decoupled with 100 nF X7R ceramics within 2 mm of bond pads. Avoid routing digital clocks or switching node traces beneath the die area - these practices are validated in TI's LM119QML application notes for hybrid microcircuit assembly.
LM119 MD8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- Die
- Series:
- -
- Packaging:
- Tube
- 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
- :
- Die
LM119 MD8 FAQ
1.How can I place an order for LM119 MD8 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM119 MD8 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 LM119 MD8 reliable?
The price and inventory of LM119 MD8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM119 MD8 is usually 5 days.
3.What payment methods are accepted for LM119 MD8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM119 MD8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM119 MD8?
LM119 MD8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM119 MD8 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 LM119 MD8?
For technical support, including LM119 MD8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM119 MD8 requirements.
6.How does Aetrix verify that LM119 MD8 is sourced from the original manufacturer or authorized distributors?
All LM119 MD8 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 LM119 MD8 meets industry standards.
7.What is the process for return or replacement of LM119 MD8?
All LM119 MD8 units undergo pre-shipment inspection (PSI). If there is an issue with LM119 MD8, 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 LM119 MD8 part is unused and in its original packaging.
Return procedure for LM119 MD8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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