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Home > Products > Integrated Circuits (ICs) > Linear > Comparators

Texas Instruments LM119E/883

Name: LM119E/883
Brand: Texas Instruments
SKU: LM119E/883
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: LM119E/883

Manufacturer:: Texas Instruments

Category:: Comparators

Package:: 20-CLCC

Datasheet:: LM119E/883.pdf

Description:: HIGH SPEED DUAL COMPARATOR 20-LC

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Product details

Overview

LM119E/883 from Texas Instruments is a radiation-hardened, high-speed dual comparator in LCCC-20 ceramic 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 operation in space-grade analog monitoring systems.

For engineers reviewing the LM119E/883 datasheet, LM119E/883 pinout, LM119E/883 application, or LM119E/883 equivalent, this page delivers verified military-spec electrical parameters, radiation tolerance data (100 krad(Si), ELDRS-free), thermal derating guidance, and precise LCCC-20 terminal mapping for flight-critical comparator design and qualification.

Technical Context

The LM119E/883 implements two independent, uncommitted-collector comparators with high common-mode slew rate and rail-to-rail input capability across ±15V supplies. Its architecture enables direct interface with logic families while maintaining isolation between signal ground and system ground.

Designed for MIL-STD-883 Class B testing, it meets SMD 5962-9679801VCA and 5962-9679802VCA requirements, including post-irradiation validation at 100 krad(Si) and guaranteed performance over −55°C to +125°C ambient.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage Range	±15 V or +5 V single supply - supports legacy bipolar and modern low-voltage logic interfaces without level-shifting.
Response Time	80 ns typical at ±15 V - enables high-speed window detection and relay control in real-time safety interlocks.
Input Offset Voltage	±3.8 mV max at 25°C - ensures accurate threshold comparison in precision analog monitoring circuits.
Output Drive Capability	25 mA sink per output - directly drives relays, lamps, and TTL inputs without external buffers.
Radiation Tolerance	100 krad(Si) total ionizing dose, ELDRS-free - qualified for long-duration space missions per MIL-STD-883 Method 1019.
Operating Temperature	−55°C to +125°C - validated across full military temperature range for avionics and launch vehicle electronics.
Input Bias Current	0.47 µA max at ±15 V - minimizes loading on high-impedance sensor sources like thermocouples or photodiodes.

Pinout & Package

LCCC-20 ceramic package (Package Number NAJ0020A), hermetically sealed, leadless, with 20 terminals arranged in 5×4 grid; case grounded via internal connection to Pin 5 (V−).

Pin/Terminal	Circuit Role	Design Meaning
1	GND 1	Ground reference for Comparator 1; must be decoupled locally to minimize noise coupling into sensitive inputs.
2	IN+ 1	Non-inverting input of Comparator 1; accepts input voltages from −12 V to +12 V at ±15 V supply.
3	IN− 1	Inverting input of Comparator 1; differential input voltage limited to ±5 V maximum.
4	OUTPUT 1	Open-collector output of Comparator 1; requires external pull-up to define logic high level and drive load.
5	V−	Negative supply terminal; internally connected to case - must be tied to system ground or negative rail per layout guidelines.
6–10	N/C	No-connect terminals; electrically isolated and not bonded - must remain unconnected on PCB.
11–15	N/C	No-connect terminals; electrically isolated and not bonded - must remain unconnected on PCB.
16	V+	Positive supply terminal; supports up to +18 V relative to ground per absolute maximum rating.
17	IN− 2	Inverting input of Comparator 2; independent of Comparator 1, enabling dual-threshold or differential sensing.
18	IN+ 2	Non-inverting input of Comparator 2; fully isolated from Comparator 1 inputs and outputs.
19	OUTPUT 2	Open-collector output of Comparator 2; independently configurable with dedicated pull-up and load.
20	GND 2	Ground reference for Comparator 2; may be tied to GND 1 or isolated depending on system grounding strategy.

Key Features

Feature	Design Value
Two independent comparators	Enables simultaneous high/low threshold detection (e.g., window comparator) without cross-talk or shared bias paths.
Uncommitted collector outputs	Allows flexible logic-level translation: pull-up to +3.3 V, +5 V, or +15 V to match downstream interface requirements.
Input/output isolation from system ground	Supports floating-sense applications such as motor phase current monitoring or isolated power supply feedback loops.
High common-mode slew rate	Maintains accurate comparison during fast-rising common-mode transients (e.g., EMI events in avionics busses).
ELDRS-free & high-dose-rate tolerant	Validated for space environments with no enhanced low-dose-rate sensitivity - eliminates need for annealing or margining.

Applications

Relay Driver	Window Detector
Use Scenario: Driving electromechanical relays in launch vehicle sequencers where timing margins are sub-100 ns and reliability is non-negotiable. IC Role / Device Role / Timing Role: Dual comparator provides independent high-threshold and low-threshold decision logic to enable/disable relay coil activation. Use Value: 80 ns response ensures deterministic actuation within tight sequencing windows; open-collector outputs directly switch 25 mA relay coils without driver transistors.	Use Scenario: Monitoring battery cell voltage in satellite power management units to trigger charge/discharge cutoff within ±10 mV accuracy. IC Role / Device Role / Timing Role: Configured as a window comparator using both internal comparators to detect when voltage falls outside preset upper/lower bounds. Use Value: Input offset ≤±3.8 mV guarantees detection accuracy; radiation-hardened operation prevents latch-up or drift during orbital radiation exposure.
Satellite Telemetry Thresholding	Avionics Sensor Interface
Use Scenario: Converting analog telemetry signals (e.g., pressure, temperature) into digital status flags for downlink in deep-space probes. IC Role / Device Role / Timing Role: Comparator 1 detects over-pressure condition; Comparator 2 detects under-temperature fault - both outputs feed FPGA interrupt lines. Use Value: −55°C to +125°C operation covers all mission phases; ELDRS-free behavior ensures stable thresholds over multi-year missions without recalibration.	Use Scenario: Interfacing isolated current-sense amplifiers to flight computer ADC triggers in fly-by-wire control systems. IC Role / Device Role / Timing Role: Provides fast, isolated overcurrent detection by comparing amplified shunt voltage against programmable reference. Use Value: Input/output isolation prevents ground-loop errors; 10.5 kV/V gain ensures clean switching even with low-signal SNR from noisy engine bays.

Relay Driver

Window Detector

Use Scenario: Driving electromechanical relays in launch vehicle sequencers where timing margins are sub-100 ns and reliability is non-negotiable.

IC Role / Device Role / Timing Role: Dual comparator provides independent high-threshold and low-threshold decision logic to enable/disable relay coil activation.

Use Value: 80 ns response ensures deterministic actuation within tight sequencing windows; open-collector outputs directly switch 25 mA relay coils without driver transistors.

Use Scenario: Monitoring battery cell voltage in satellite power management units to trigger charge/discharge cutoff within ±10 mV accuracy.

IC Role / Device Role / Timing Role: Configured as a window comparator using both internal comparators to detect when voltage falls outside preset upper/lower bounds.

Use Value: Input offset ≤±3.8 mV guarantees detection accuracy; radiation-hardened operation prevents latch-up or drift during orbital radiation exposure.

Satellite Telemetry Thresholding

Avionics Sensor Interface

Use Scenario: Converting analog telemetry signals (e.g., pressure, temperature) into digital status flags for downlink in deep-space probes.

IC Role / Device Role / Timing Role: Comparator 1 detects over-pressure condition; Comparator 2 detects under-temperature fault - both outputs feed FPGA interrupt lines.

Use Value: −55°C to +125°C operation covers all mission phases; ELDRS-free behavior ensures stable thresholds over multi-year missions without recalibration.

Use Scenario: Interfacing isolated current-sense amplifiers to flight computer ADC triggers in fly-by-wire control systems.

IC Role / Device Role / Timing Role: Provides fast, isolated overcurrent detection by comparing amplified shunt voltage against programmable reference.

Use Value: Input/output isolation prevents ground-loop errors; 10.5 kV/V gain ensures clean switching even with low-signal SNR from noisy engine bays.

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual comparator applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
LM119J/883	CDIP-14 package (vs. LCCC-20); same electrical specs and radiation qualification; higher θJA (94°C/W vs. 89°C/W still air).	Preferred for through-hole prototyping or legacy board designs with DIP footprints; less suitable for high-density or vibration-prone layouts.	Select LM119J/883 only if CDIP-14 mechanical compatibility is required; verify thermal margin with board-level airflow modeling.
LM119H/883	TO-100 metal-can package (10-pin); identical radiation spec but lower pin count; no separate GND 1/GND 2 terminals - single ground reference.	Used in RF-adjacent or EMI-sensitive analog front-ends where metal shielding improves noise immunity; lacks dual-ground isolation capability.	Choose LM119H/883 when EMI suppression is critical and dual-ground isolation is unnecessary; confirm thermal path to chassis ground.

Compared with LM119J/883 and LM119H/883, the LM119E/883 offers superior layout flexibility via 20-pin LCCC with independent ground references and optimized thermal resistance (89°C/W), making it the preferred choice for high-reliability, space-constrained, and ground-isolation–critical systems.

Availability

LM119E/883 is available at Aetrix Electronics and suitable for satellite telemetry systems, launch vehicle sequencers, and avionics sensor interfaces requiring stable component supply across extended production lifecycles and radiation-qualified assurance.

Supply support for LM119E/883 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, embedded processing, and high-reliability components for aerospace, defense, and industrial markets.

The LM119QML product line delivers radiation-hardened comparators engineered specifically for mission-critical space and military platforms where failure is not an option.

FAQ

What is the maximum allowable supply voltage for LM119E/883?

The LM119E/883 has an absolute maximum total supply voltage of 36 V. When operated at ±15 V, the device remains within safe limits with 6 V headroom. Exceeding ±15 V risks exceeding the 36 V total supply limit or violating the ±18 V ground-to-V+ rating - always observe the Absolute Maximum Ratings table in the SNOSAN3B datasheet for LM119E/883.

Does LM119E/883 support single-supply operation?

Yes, LM119E/883 operates from a single +5 V supply with ground reference, as confirmed in the "Features" section and Electrical Characteristics tables. Input common-mode range extends from 1.0 V to 3.0 V under +5 V supply, and output saturation voltage is specified at 0.4 V (max) with 4.0 mA load - enabling direct interface with 5 V TTL logic.

How is radiation hardness validated for LM119E/883?

LM119E/883 is qualified to SMD 5962-9679801VCA (high-dose-rate) and 5962-9679802VCA (ELDRS-free) standards per MIL-STD-883 Method 1019. Post-irradiation testing at 100 krad(Si) confirms VIO ≤±4.0 mV and IIB ≤1.0 µA at 25°C - matching pre-rad limits and verifying functional integrity after exposure.

What does "N/C" mean for pins 6–10 and 11–15 on LM119E/883?

"N/C" stands for No Connect - these 10 pins are electrically isolated, unbonded, and unused in the LM119E/883 die assembly. They must remain unconnected on the PCB; routing traces or applying solder paste to them may cause parasitic coupling or mechanical stress. The LCCC-20 footprint accommodates multiple variants, and N/C pins provide mechanical symmetry and thermal balance.

Can LM119E/883 drive a 25 mA relay coil directly?

Yes, LM119E/883 is rated for 25 mA output sink current per channel at ±15 V supply, with VSat ≤1.5 V. To drive a relay coil, connect the coil between V+ and OUTPUT 1 (or OUTPUT 2), and ensure the coil's DC resistance results in ≤25 mA at the applied V+. Confirm thermal dissipation: at 1.5 V saturation and 25 mA, power is 37.5 mW - well within the 500 mW package limit for LM119E/883.

LM119E/883 Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Package/Case:: 20-CLCC

Series:: -

Packaging:: Bulk

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

:: 20-LCCC (8.89x8.89)

LM119E/883 FAQ

1.How can I place an order for LM119E/883 through Aetrix?

Please submit a Request for Quotation (RFQ) for LM119E/883 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 LM119E/883 reliable?

The price and inventory of LM119E/883 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM119E/883 is usually 5 days.

3.What payment methods are accepted for LM119E/883?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM119E/883 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for LM119E/883?

LM119E/883 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your LM119E/883 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 LM119E/883?

For technical support, including LM119E/883 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM119E/883 requirements.

6.How does Aetrix verify that LM119E/883 is sourced from the original manufacturer or authorized distributors?

All LM119E/883 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 LM119E/883 meets industry standards.

7.What is the process for return or replacement of LM119E/883?

All LM119E/883 units undergo pre-shipment inspection (PSI). If there is an issue with LM119E/883, 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 LM119E/883 part is unused and in its original packaging.

Return procedure for LM119E/883:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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