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Texas Instruments LM193J/883
- Part No.:
- LM193J/883
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 8-CDIP (0.300", 7.62mm)
- Datasheet:
-
LM193J/883.pdf
- Description:
- LOW POWER LOW OFFSET VOLTAGE DUA
- Quantity:
- Payment:
- Shipping:
Inventory:4,344
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Product details
Overview
LM193J/883 from Texas Instruments is a radiation-hardened, dual precision voltage comparator designed for high-reliability military and space applications. It features 2.0 mV max input offset voltage, 0.4 mA supply current at 5 V, ±1.0 V to ±18 V dual-supply or 2.0–36 V single-supply operation, and input common-mode range extending to ground. It is used in zero-crossing detection, time-delay generators, and analog-to-digital interfaces in harsh-environment systems.
For engineers reviewing the LM193J/883 datasheet, LM193J/883 pinout, LM193J/883 application, or LM193J/883 equivalent, key selection criteria include radiation tolerance (100 krad(Si), ELDRS-free), guaranteed operation from −55°C to +125°C, low-input-bias-current (±100 nA max), and compatibility with TTL/CMOS logic outputs without level-shifting circuitry.
Technical Context
The LM193J/883 implements two independent PNP-input comparators with open-collector NPN output stages, enabling wired-OR functionality and flexible pull-up voltage selection up to 36 V. Its bias network delivers supply-current independence across 2.0–36 V, and its input stage supports common-mode voltages down to ground on single supplies - eliminating need for negative rails in sensing applications.
Designed per MIL-STD-883 Class B requirements, it undergoes full Group A testing including static/dynamic functional verification at −55°C, +25°C, and +125°C, plus radiation qualification to 100 krad(Si) total ionizing dose with no enhanced low-dose-rate sensitivity (ELDRS-free). Output saturation voltage remains ≤0.4 V at 4 mA sink current under nominal conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | Max ±2.0 mV at +25°C - enables accurate threshold detection in precision limit-comparator circuits |
| Supply Current | 0.4 mA typical at 5 V - supports battery-operated or low-power embedded monitoring systems |
| Supply Voltage Range | ±1.0 V to ±18 V dual or 2.0 VDC to 36 VDC single - allows direct interface with legacy 5 V, 12 V, or 28 V avionics buses |
| Input Bias Current | −100 nA to −1.0 nA - minimizes loading error in high-impedance sensor signal paths |
| Output Saturation Voltage | 0.4 V max at 4 mA sink - ensures reliable logic-low assertion into TTL/CMOS inputs without additional level translation |
| Common-Mode Input Range | Includes ground on single supply - permits direct sensing of signals referenced to system ground (e.g., current-sense shunts) |
| Response Time | 0.8 µs at 50 mV overdrive - suitable for pulse-width modulation feedback and fast edge-detection timing circuits |
Pinout & Package
LM193J/883 is supplied in an 8-pin Ceramic Dual-In-Line Package (CDIP), package code NAB, with hermetically sealed construction rated for −55°C to +125°C operation. The package meets MIL-STD-883 mechanical and environmental requirements for military-grade reliability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Output A | Open-collector NPN output - requires external pull-up; sinks up to 6 mA; compatible with TTL/CMOS/MOS logic |
| 2 | Inverting Input A | PNP-base input node - accepts voltages from −0.3 V to V+; supports ground-referenced sensing |
| 3 | Non-Inverting Input A | PNP-base input node - differential input voltage range equals supply voltage magnitude |
| 4 | V− | Negative supply terminal - supports dual-supply operation down to −18 V or serves as ground reference in single-supply mode |
| 5 | Non-Inverting Input B | Second comparator input - electrically isolated from Channel A; identical input characteristics |
| 6 | Inverting Input B | Second comparator input - enables dual-threshold or window-comparator configurations |
| 7 | Output B | Independent open-collector output - supports separate logic interfacing or wired-OR with Output A |
| 8 | V+ | Positive supply terminal - accepts up to +36 V DC; bias current independent of supply magnitude |
Key Features
| Feature | Design Value |
|---|---|
| Radiation Hardness | Qualified to 100 krad(Si) TID with ELDRS-free performance - certified for satellite power regulation and onboard telemetry |
| Ground-Sensing Input Stage | Input common-mode range includes 0 V on single supply - eliminates need for level-shifting in shunt-based current monitoring |
| Logic-Compatible Output | Output sinks ≥6 mA at <0.4 V saturation - directly drives TTL, DTL, ECL, MOS, and CMOS without interface buffers |
| Wide Supply Flexibility | Operates from ±1.0 V to ±18 V or 2.0–36 V single supply - simplifies integration into mixed-voltage military subsystems |
| Temperature-Stable Offset | Input offset drift ≤±1.0 mV over full −55°C to +125°C range - maintains accuracy in uncontrolled thermal environments |
Applications
| Avionics Power Sequencing | Satellite Telemetry Threshold Detection |
|---|---|
Use Scenario: Monitoring 28 V aircraft bus voltage during cold-start to enable staged activation of flight control modules. IC Role / Device Role / Timing Role: Dual comparator performs undervoltage lockout (UVLO) and overvoltage protection (OVP) with independent thresholds. Use Value: Guaranteed operation at −55°C ensures startup reliability in high-altitude storage; radiation tolerance prevents latch-up during atmospheric transit. | Use Scenario: Converting analog sensor outputs (e.g., solar array current, battery temperature) into digital status flags for downlink transmission. IC Role / Device Role / Timing Role: Precision threshold detector generating interrupt signals when sensor values exceed mission-critical limits. Use Value: ±2.0 mV offset voltage enables sub-millivolt-level detection resolution; 100 krad(Si) rating ensures 15+ year orbital lifetime without parameter degradation. |
| Missile Guidance Signal Conditioning | Ground-Based Radar Pulse Shaping |
Use Scenario: Conditioning gyroscope and accelerometer signals prior to ADC sampling in inertial measurement units (IMUs). IC Role / Device Role / Timing Role: High-speed comparator converts analog rate signals into clean digital pulses for FPGA-based timing analysis. Use Value: 0.8 µs response time at 50 mV overdrive supports >1 MHz pulse train fidelity; −55°C to +125°C rating matches missile motor thermal profile. | Use Scenario: Generating precise timing windows for radar transmit/receive switching in phased-array antenna control systems. IC Role / Device Role / Timing Role: Dual-channel comparator implements leading/trailing edge detection on RF envelope signals to define gate windows. Use Value: Independent channels allow simultaneous rising/falling edge capture; open-collector outputs simplify OR-ing of multiple timing events onto shared control bus. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM193AH/883 | TO-99 metal-can package (8-pin); identical electrical specs but different thermal resistance (θJA = 174°C/W still air) and mechanical mounting | Preferred where hermetic metal packaging and superior thermal conduction are required (e.g., high-power density modules) | Select LM193AH/883 when board layout accommodates TO-99 footprint and thermal management prioritizes junction-to-case conduction |
| LM193AJ-QMLV | Same CDIP-8 package; qualified to QML-V Class V (full burn-in, lot acceptance test) and specified for space-grade use with extended radiation reporting | Required for NASA or ESA Class B/C missions where full QML-V documentation and traceability are mandated | Choose LM193AJ-QMLV when program-level certification (e.g., NASA GSFC-STD-7000) supersedes standard MIL-PRF-38535 Class B requirements |
Compared with LM193AH/883 and LM193AJ-QMLV, the LM193J/883 provides MIL-STD-883 Class B qualification in CDIP packaging at lower cost and broader commercial availability, while maintaining identical comparator performance - making it optimal for defense electronics where full QML-V is not mandated but radiation hardness and temperature range are essential.
Availability
LM193J/883 is available at Aetrix Electronics and suitable for avionics power sequencing, satellite telemetry threshold detection, and missile guidance signal conditioning requiring stable component supply across extended temperature and radiation environments.
Supply support for LM193J/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 company headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and aerospace markets since 1930.
The LM193 series was developed to provide radiation-tolerant, precision dual comparators for mission-critical military and space systems where reliability under extreme thermal, voltage, and radiation stress is non-negotiable.
FAQ
What is the maximum allowable input voltage for LM193J/883 relative to its supply rails?
The LM193J/883 allows differential input voltage up to ±36 V, and individual input voltages may exceed V+ by up to 36 V provided the other input remains within the common-mode range. However, input voltage must not fall below −0.3 VDC (or 0.3 V below the negative rail if used) to prevent damage. This specification is verified per MIL-STD-883 Method 3015.
Does LM193J/883 support single-supply operation with ground-referenced inputs?
Yes, LM193J/883 supports true single-supply operation with input common-mode voltage range extending to ground (0 V), enabling direct interface with sensors referenced to system ground - such as current-sense resistors or thermistor dividers - without level-shifting circuitry.
What radiation qualification level does LM193J/883 meet?
LM193J/883 is qualified to 100 krad(Si) total ionizing dose (TID) with ELDRS-free performance per MIL-STD-883 Method 1019, and has undergone full Group A testing including dynamic functional verification across −55°C, +25°C, and +125°C per Method 5005.
Can the outputs of LM193J/883 be wired together for logical OR functionality?
Yes, LM193J/883 features open-collector NPN outputs that can be directly wired together (wired-OR) with a single pull-up resistor to implement combinational logic functions - such as alarm consolidation or multi-sensor event triggering - without risk of contention or excessive current draw.
What is the guaranteed operating temperature range for LM193J/883?
LM193J/883 is fully characterized and guaranteed to operate across −55°C to +125°C ambient temperature, with all electrical parameters validated per MIL-STD-883 Group A subgroups at these extremes - making it suitable for deployment in jet engine bays, satellite payloads, and desert-deployed radar systems.
LM193J/883 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 8-CDIP (0.300", 7.62mm)
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Type:
- General Purpose
- Number of Elements:
- 2
- Output Type:
- Open-Collector, Rail-to-Rail
- Voltage - Supply, Single/Dual (±):
- 2V ~ 36V, ±1V ~ 18V
- :
- 2mV @ 5V
- Voltage - Input Offset (Max):
- 1000pA @ 5V
- Current - Input Bias (Max):
- 6mA
- Current - Output (Typ):
- 2.5mA
- Current - Quiescent (Max):
- 60dB CMRR, 60dB PSRR
- CMRR, PSRR (Typ):
- 700ns (Typ)
- Propagation Delay (Max):
- -
- Hysteresis:
- -55°C ~ 125°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Through Hole
- :
- 8-CDIP
LM193J/883 FAQ
1.How can I place an order for LM193J/883 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM193J/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 LM193J/883 reliable?
The price and inventory of LM193J/883 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM193J/883 is usually 5 days.
3.What payment methods are accepted for LM193J/883?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM193J/883 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM193J/883?
LM193J/883 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM193J/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 LM193J/883?
For technical support, including LM193J/883 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM193J/883 requirements.
6.How does Aetrix verify that LM193J/883 is sourced from the original manufacturer or authorized distributors?
All LM193J/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 LM193J/883 meets industry standards.
7.What is the process for return or replacement of LM193J/883?
All LM193J/883 units undergo pre-shipment inspection (PSI). If there is an issue with LM193J/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 LM193J/883 part is unused and in its original packaging.
Return procedure for LM193J/883:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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