My Inquiry
My Account
Texas Instruments LM119W-SMD
- Part No.:
- LM119W-SMD
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 10-CFlatPack
- Datasheet:
-
LM119W-SMD.pdf
- Description:
- HIGH SPEED DUAL COMPARATOR 10-CF
- Quantity:
- Payment:
- Shipping:
Inventory:1,652
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LM119W-SMD from Texas Instruments is a radiation-hardened, high-speed dual comparator in a 10-pin CFP (NAD) package, operating from ±15V or single 5V supply, with 80 ns typical response time, 10.5 kV/V voltage gain, and input offset voltage ≤±3.8 mV. It drives TTL/DTL/RTL loads up to 25 mA and supports isolated input/output grounding for mixed-signal systems.
For engineers reviewing the LM119W-SMD datasheet, LM119W-SMD pinout, LM119W-SMD application, or LM119W-SMD equivalent, this page delivers verified electrical specs, radiation qualification status (100 krad(Si), ELDRS-free), thermal derating guidance, and dual-comparator interface design considerations for aerospace and defense signal conditioning.
Technical Context
The LM119W-SMD integrates two independent comparators on a single monolithic die, each featuring uncommitted NPN output transistors enabling open-collector operation compatible with multiple logic families. Its differential input stage delivers high common-mode slew rate and operates across −55°C to +125°C ambient temperature.
Designed for radiation-tolerant environments, it meets MIL-STD-883 Class B requirements with High Dose Rate (100 krad(Si)) and ELDRS-Free variants confirmed per SMD 5962-9679801 and 5962-9679802 specifications. Input bias current remains ≤0.95 µA over full temperature range, supporting precision threshold detection in low-power analog front-ends.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | ±15 V or +5 V single supply - enables direct interfacing with legacy TTL logic and modern low-voltage control systems without level-shifting. |
| Response Time | 80 ns typical at ±15 V - supports high-speed window detection and pulse-width discrimination in real-time control loops. |
| Input Offset Voltage | ±3.8 mV max at 25°C - ensures accurate voltage thresholding down to sub-10 mV windows in sensor signal conditioning. |
| Output Drive Capability | 25 mA sink per channel - directly drives relays, LEDs, and logic gates without external buffer stages. |
| Radiation Tolerance | 100 krad(Si) total ionizing dose, ELDRS-free - qualified for long-duration space missions and nuclear instrumentation applications. |
| Operating Temperature | −55°C to +125°C - supports deployment in avionics, engine control units, and downhole drilling electronics. |
| Input Bias Current | 0.47 µA typical at ±15 V - minimizes loading error on high-impedance reference dividers and thermistor networks. |
Pinout & Package
LM119W-SMD uses a hermetically sealed 10-pin Ceramic Flatpack (CFP, package code NAD), with case connected to Pin 5 (V−). The package measures 5.02 mm × 2.3 mm × 9.398 mm and is rated for 260°C peak reflow.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | IN− 1 | Inverting input of Comparator 1 - referenced against IN+1 to determine output state; supports differential or single-ended configurations. |
| 2 | IN+ 1 | Non-inverting input of Comparator 1 - accepts analog signals up to ±12 V common-mode range with ±5 V differential limit. |
| 3 | GND 1 | Ground reference for Comparator 1 inputs - electrically isolated from GND 2 to enable dual-supply or floating ground architectures. |
| 4 | OUTPUT 1 | Open-collector NPN output of Comparator 1 - requires external pull-up; sinks up to 25 mA for direct logic interfacing or relay driving. |
| 5 | V− | Negative supply rail - also serves as case connection; must be tied to system ground or negative rail depending on configuration. |
| 6 | N/C | No internal connection - left unconnected; no routing or thermal relief required on PCB. |
| 7 | N/C | No internal connection - unused pin; may be grounded for mechanical stability but not electrically required. |
| 8 | IN+ 2 | Non-inverting input of Comparator 2 - independently configurable; shares same voltage gain and offset specs as Channel 1. |
| 9 | IN− 2 | Inverting input of Comparator 2 - enables independent second threshold comparison without cross-talk. |
| 10 | OUTPUT 2 | Open-collector NPN output of Comparator 2 - fully independent of OUTPUT 1; supports dual-window or redundant fault detection schemes. |
Key Features
| Feature | Design Value |
|---|---|
| Two independent comparators | Enables simultaneous high/low threshold detection (e.g., window comparator) or dual-channel monitoring without inter-channel delay or coupling. |
| Operates from single 5V supply | Eliminates need for dual-rail power in embedded systems; compatible with microcontroller I/O domains and battery-powered telemetry nodes. |
| High common-mode slew rate | Maintains accurate comparison during fast-rising common-mode transients (e.g., motor commutation noise), reducing false triggering in EMI-prone environments. |
| Inputs and outputs isolated from system ground | Allows separate ground references for analog sensing and digital control domains, preventing ground-loop errors in mixed-signal measurement systems. |
| Uncommitted collector output stage | Supports wired-OR logic, level translation, and direct drive of lamps, relays, and optocouplers without external transistor stages. |
Applications
| Relay Driver | Window Detector |
|---|---|
|
Use Scenario: Driving electromechanical relays in satellite payload power distribution units where isolation and radiation tolerance are critical. IC Role / Device Role / Timing Role: Dual comparator provides independent high-threshold and low-threshold detection to enable precise ON/OFF hysteresis control of relay coils. Use Value: Eliminates external hysteresis resistors and discrete transistors, reducing component count while maintaining 100 krad(Si) survivability and <80 ns response for fault-safe shutdown. |
Use Scenario: Monitoring battery cell voltage in spacecraft battery management systems to detect under-voltage and over-voltage conditions simultaneously. IC Role / Device Role / Timing Role: Comparator 1 detects VLOW threshold; Comparator 2 detects VHIGH threshold; outputs combined via external logic to generate fault flag. Use Value: Enables single-chip window detection with guaranteed ±3.8 mV offset accuracy across −55°C to +125°C, ensuring reliable cell protection without calibration drift. |
| Motor Commutation Sensing | Redundant Fault Monitor |
|
Use Scenario: Detecting back-EMF zero-crossing points in brushless DC motor controllers deployed in radiation-exposed UAV propulsion systems. IC Role / Device Role / Timing Role: One comparator channels conditioned phase voltage; second channel monitors reference; differential comparison yields precise timing edges. Use Value: 80 ns propagation delay ensures accurate commutation timing at >20 kHz switching frequencies; radiation-hardened design prevents latch-up during solar particle events. |
Use Scenario: Cross-checking analog sensor outputs (e.g., pressure, temperature) in flight-critical avionics subsystems requiring dual-channel agreement before actuation. IC Role / Device Role / Timing Role: Each comparator independently validates the same sensor signal against independent reference thresholds; outputs gated for voting logic. Use Value: Provides hardware-level fault containment: mismatch triggers immediate isolation, leveraging ELDRS-free behavior to avoid latent failures after prolonged low-dose exposure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM119W/883 | Identical pinout and electrical specs; qualified per MIL-STD-883 instead of SMD 5962; slightly higher test coverage but no ELDRS-free guarantee. | Preferred for military ground systems where MIL-STD-883 compliance is mandated, but unsuitable for long-duration space missions requiring ELDRS validation. | Select LM119W/883 only when procurement mandates MIL-STD-883 Group A testing and radiation history is secondary to qualification pedigree. |
| LM119WRQMLV | Same CFP package and radiation spec (100 krad(Si), ELDRS-free); differs in screening level (QMLV vs QML-SP) and part marking; identical functional performance. | Used in NASA-class space programs requiring QMLV certification; functionally interchangeable with LM119W-SMD in all circuit implementations. | Choose LM119WRQMLV when full QMLV documentation traceability and lot-level radiation test reports are contractually required. |
Compared with LM119W/883, LM119W-SMD offers guaranteed ELDRS-free operation essential for geosynchronous orbit, while LM119WRQMLV provides identical radiation assurance with enhanced process traceability-both retain the same 10-pin CFP footprint and 80 ns speed, making them drop-in alternatives where radiation profile matches mission requirements.
Availability
LM119W-SMD is available at Aetrix Electronics and suitable for aerospace power sequencing, satellite telemetry conditioning, and defense-grade motor control requiring stable component supply across extended temperature and radiation environments.
Supply support for LM119W-SMD 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 deep heritage in high-reliability and radiation-tolerant components for aerospace and defense.
The LM119 product line was engineered for precision, high-speed analog comparison in harsh environments-targeting applications where radiation hardness, wide temperature operation, and deterministic response time are non-negotiable.
FAQ
What is the maximum supply voltage rating for LM119W-SMD?
The LM119W-SMD supports a total supply voltage of up to 36 V, with absolute maximum ratings of ±15 V across V+ and V− terminals. Operation above ±15 V risks permanent damage; the device is fully specified and tested at ±15 V and single 5 V supply configurations. Derating is required above 70°C ambient per θJA = 63°C/W (500 LF/min airflow).
Does LM119W-SMD support single-supply operation with ground-referenced inputs?
Yes, LM119W-SMD operates from a single +5 V supply with inputs referenced to ground. Its input common-mode range extends from 1.0 V to 3.0 V under +5 V supply, and output saturation voltage is 0.4 V at 4 mA load - enabling direct interface with 3.3 V or 5 V logic families without level shifters.
What radiation qualification levels apply to LM119W-SMD?
LM119W-SMD is qualified to SMD 5962-9679801 (High Dose Rate, 100 krad(Si)) and SMD 5962-9679802 (ELDRS-Free, 100 krad(Si)), both meeting MIL-STD-883 requirements. Post-irradiation limits for VIO and IIB remain within pre-rad specs, confirming suitability for LEO and GEO missions with cumulative dose exposure.
Can LM119W-SMD outputs drive a 25 mA relay coil directly?
Yes, each LM119W-SMD output can sink up to 25 mA continuously at ±15 V supply with VO ≤ 1.5 V saturation voltage. For reliable relay actuation, use a 4.7 kΩ pull-up to +5 V or +12 V; ensure relay coil inductance is suppressed with a flyback diode to prevent output transistor stress during turn-off.
Is LM119W-SMD pin-compatible with other LM119 variants in CFP packages?
Yes, LM119W-SMD shares identical 10-pin CFP (NAD) pinout and mechanical dimensions with LM119W/883, LM119WRQMLV, and LM119WRLQMLV. All variants use Pin 5 as V−/case connection and maintain consistent terminal assignments - enabling direct PCB replacement where radiation and screening requirements align.
LM119W-SMD Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 10-CFlatPack
- 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
- :
- 10-CFP
LM119W-SMD FAQ
1.How can I place an order for LM119W-SMD through Aetrix?
Please submit a Request for Quotation (RFQ) for LM119W-SMD 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 LM119W-SMD reliable?
The price and inventory of LM119W-SMD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM119W-SMD is usually 5 days.
3.What payment methods are accepted for LM119W-SMD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM119W-SMD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM119W-SMD?
LM119W-SMD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM119W-SMD 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 LM119W-SMD?
For technical support, including LM119W-SMD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM119W-SMD requirements.
6.How does Aetrix verify that LM119W-SMD is sourced from the original manufacturer or authorized distributors?
All LM119W-SMD 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 LM119W-SMD meets industry standards.
7.What is the process for return or replacement of LM119W-SMD?
All LM119W-SMD units undergo pre-shipment inspection (PSI). If there is an issue with LM119W-SMD, 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 LM119W-SMD part is unused and in its original packaging.
Return procedure for LM119W-SMD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM119W-SMD 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
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
