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Texas Instruments LM193AH/883
- Part No.:
- LM193AH/883
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- TO-99-8 Metal Can
- Datasheet:
-
LM193AH/883.pdf
- Description:
- LOW POWER LOW OFFSET VOLTAGE DUA
- Quantity:
- Payment:
- Shipping:
Inventory:2,245
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Product details
Overview
LM193AH/883 from Texas Instruments is a radiation-hardened, low-power, dual precision voltage comparator with 2.0 mV max input offset voltage, 0.4 mA supply current, and operation from 2.0 VDC to 36 VDC single supply (±1.0 V to ±18 V dual). It features rail-to-rail input common-mode range including ground and TTL/CMOS-compatible open-collector outputs-used in space-grade limit detection, zero-crossing sensing, and high-reliability analog-to-digital interface circuits.
For engineers reviewing the LM193AH/883 datasheet, LM193AH/883 pinout, LM193AH/883 application, or LM193AH/883 equivalent, key selection criteria include its MIL-PRF-38535 Class V qualification, 100 krad(Si) TID tolerance, ELDRS-free performance, −55°C to +125°C operating range, and TO-99 metal-can package with 8-pin configuration.
Technical Context
The LM193AH/883 integrates two independent high-gain comparators with PNP input stages enabling ground-sensing capability on single supplies. Its bias network delivers supply-voltage-independent current draw across 2.0–36 VDC, and output transistors are uncommitted NPN collectors supporting wired-OR logic and flexible pull-up voltage selection up to 36 VDC.
Designed for radiation-tolerant systems, it meets MIL-STD-883 Group A testing across −55°C, +25°C, and +125°C, with verified post-irradiation stability in offset voltage (±1.0 mV drift), supply current (≤2.5 mA at 36 V), and response time (≤1.0 µs at 50 mV overdrive).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | Max ±2.0 mV at 25°C - enables accurate threshold detection without trimming in precision limit-comparator applications. |
| Supply Current | 0.4 mA typical at 5 V - supports battery-powered or low-quiescent systems without compromising speed or accuracy. |
| Common-Mode Input Range | Includes ground to (V+ − 1.5 V) - allows direct sensing of signals referenced to system ground on single-supply rails. |
| Output Saturation Voltage | 0.4 V max at 4 mA sink - ensures strong logic-low assertion into TTL/CMOS loads with minimal voltage headroom loss. |
| Radiation Tolerance | 100 krad(Si) TID, ELDRS-free - qualified for long-duration missions in low-earth orbit and deep-space environments. |
| Operating Temperature | −55°C to +125°C - supports deployment in avionics, missile guidance, and downhole instrumentation without derating. |
| Response Time | 0.8 µs at 50 mV overdrive - provides fast edge detection for pulse-width modulation and timing-critical control loops. |
Pinout & Package
LM193AH/883 is housed in an 8-pin hermetically sealed TO-99 metal can (package code LMC), designed for high-reliability military and space applications requiring thermal stability and EMI shielding.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input (Comparator A) | Accepts reference or threshold signal; supports common-mode voltage down to ground. |
| 2 | Non-Inverting Input (Comparator A) | Accepts sensed signal; differential input voltage may exceed V+ without damage. |
| 3 | Output (Comparator A) | Open-collector NPN transistor collector - requires external pull-up; sinks up to 6 mA. |
| 4 | Negative Supply / Ground | Reference node for dual-supply operation or ground return in single-supply configurations. |
| 5 | Non-Inverting Input (Comparator B) | Independent second channel input; identical electrical specs to Pin 2. |
| 6 | Inverting Input (Comparator B) | Independent second channel input; identical electrical specs to Pin 1. |
| 7 | Output (Comparator B) | Open-collector NPN transistor collector - electrically isolated from Pin 3; supports OR-ing. |
| 8 | Positive Supply | Accepts 2.0–36 VDC; supply current remains stable across full voltage range. |
Key Features
| Feature | Design Value |
|---|---|
| Ground-sensing input stage | Enables direct interfacing with 0 V-referenced sensors (e.g., thermocouples, current shunts) on single supplies. |
| Uncommitted open-collector outputs | Allows wired-OR logic, level translation up to 36 V, and compatibility with TTL, CMOS, ECL, and MOS families. |
| Supply-independent biasing | Maintains 0.4 mA ICC across 2.0–36 VDC - eliminates need for supply regulation in wide-input-range systems. |
| ELDRS-free radiation response | No enhanced low-dose-rate sensitivity confirmed per MIL-STD-883 Method 1019 - ensures predictable behavior in space radiation environments. |
| Wide temperature operation | Validated functionality from −55°C to +125°C with no parameter degradation - suitable for extreme-environment deployments. |
Applications
| Avionics Power Monitoring | Satellite Solar Array Regulation |
|---|---|
Use Scenario: Real-time monitoring of 28 VDC bus voltage against under/over-voltage thresholds in flight control computers. IC Role / Device Role / Timing Role: Dual comparator performs independent high-side and low-side limit detection with hysteresis to prevent chatter during transient events. Use Value: 2.0 mV offset and −55°C to +125°C operation ensure reliable trip-point accuracy across thermal vacuum cycles and launch vibration. | Use Scenario: Controlling MPPT (maximum power point tracking) switching based on panel voltage vs. reference in LEO satellite power systems. IC Role / Device Role / Timing Role: Comparator B compares solar array output to a precision reference; Comparator A validates battery charge state before enabling charging. Use Value: 100 krad(Si) TID rating and ELDRS-free design guarantee functional integrity after multi-year orbital exposure. |
| Missile Guidance Sensor Interface | Downhole Telemetry Threshold Detection |
Use Scenario: Converting analog gyroscope and accelerometer outputs into digital enable/disable flags for inertial navigation subsystems. IC Role / Device Role / Timing Role: Each comparator channels digitizes one sensor axis; open-collector outputs interface directly with radiation-hardened FPGA I/O banks. Use Value: 0.8 µs response time at 50 mV overdrive ensures sub-microsecond decision latency critical for real-time attitude correction. | Use Scenario: Detecting pressure transducer output crossing preset thresholds during oil-well logging operations at 175°C ambient. IC Role / Device Role / Timing Role: Comparator A monitors overpressure cutoff; Comparator B triggers data transmission upon reaching target depth. Use Value: TO-99 metal-can package provides mechanical robustness and thermal conductivity essential for sustained high-temperature operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM193AJ/883 | Same electrical specs but in 8-pin CDIP (NAB) ceramic DIP package; higher θJA (146°C/W still air) vs. TO-99 (174°C/W). | Preferred for PCB-mounted legacy designs requiring through-hole DIP footprint and lower cost per unit. | Select LM193AJ/883 when board layout mandates DIP-8 and radiation tolerance requirements match LM193AH/883. |
| LM193AHRQMLV | Identical TO-99 package and radiation spec, but QML-V certified per MIL-PRF-38535 Class V with full Group B testing. | Required for DoD programs mandating QML-V qualification and extended reliability screening beyond Class B. | Choose LM193AHRQMLV when contractual compliance demands QML-V certification and full burn-in/lot acceptance testing. |
Compared with LM193AJ/883 and LM193AHRQMLV, the LM193AH/883 offers optimal balance of TO-99 thermal/mechanical performance, Class B qualification, and cost efficiency for non-QML-V space and defense programs requiring proven 100 krad(Si) resilience.
Availability
LM193AH/883 is available at Aetrix Electronics and suitable for avionics power monitoring, satellite solar array regulation, missile guidance sensor interface, and downhole telemetry threshold detection requiring stable component supply across extended temperature and radiation environments.
Supply support for LM193AH/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 delivering analog and embedded processing solutions, with decades of heritage in high-reliability aerospace and defense components.
The LM193AH/883 belongs to TI's radiation-hardened linear comparator family, engineered specifically for mission-critical systems where single-event effects, total ionizing dose, and extreme thermal cycling must not compromise analog decision-making integrity.
FAQ
What is the maximum total ionizing dose (TID) rating for LM193AH/883?
The LM193AH/883 is rated for 100 krad(Si) total ionizing dose per MIL-STD-883 Method 1019, with verified post-irradiation performance stability in offset voltage, supply current, and response time. This TID rating applies across the full −55°C to +125°C operating range and is validated for both low- and high-dose-rate exposure conditions without ELDRS effect.
Does LM193AH/883 support single-supply operation with inputs referenced to ground?
Yes, the LM193AH/883 supports true single-supply operation with input common-mode voltage range extending to ground (0 V), even when powered from +2.0 VDC to +36 VDC. This is enabled by its PNP input stage architecture, allowing direct connection of ground-referenced sensors such as current shunts or thermocouples without level-shifting circuitry.
What package type and pin count does LM193AH/883 use?
The LM193AH/883 uses an 8-pin hermetically sealed TO-99 metal-can package (TI package code LMC), with leads arranged in a circular pattern and center tab electrically connected to Pin 4 (negative supply/ground). This package provides superior thermal dissipation, EMI shielding, and mechanical ruggedness required for aerospace and defense deployments.
Can the outputs of LM193AH/883 be wired together for logical OR functionality?
Yes, the LM193AH/883 features two independent open-collector NPN output transistors (Pins 3 and 7), enabling direct wired-OR connection without external diodes. When multiple comparators share a common pull-up resistor, the combined output asserts low if any channel triggers - a standard technique used in fault-monitoring and priority-interrupt circuits.
How does LM193AH/883 differ from commercial-grade LM193A in terms of qualification?
The LM193AH/883 is fully qualified to MIL-PRF-38535 Class B with radiation hardness assurance (100 krad/Si, ELDRS-free), extended temperature testing (−55°C to +125°C), and rigorous Group A screening per MIL-STD-883. In contrast, commercial LM193A lacks radiation testing, operates only from 0°C to +70°C, and is not screened for high-reliability lot acceptance or burn-in.
LM193AH/883 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- TO-99-8 Metal Can
- Series:
- -
- Packaging:
- Tray
- 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
- :
- TO-99-8
LM193AH/883 FAQ
1.How can I place an order for LM193AH/883 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM193AH/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 LM193AH/883 reliable?
The price and inventory of LM193AH/883 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM193AH/883 is usually 5 days.
3.What payment methods are accepted for LM193AH/883?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM193AH/883 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM193AH/883?
LM193AH/883 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM193AH/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 LM193AH/883?
For technical support, including LM193AH/883 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM193AH/883 requirements.
6.How does Aetrix verify that LM193AH/883 is sourced from the original manufacturer or authorized distributors?
All LM193AH/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 LM193AH/883 meets industry standards.
7.What is the process for return or replacement of LM193AH/883?
All LM193AH/883 units undergo pre-shipment inspection (PSI). If there is an issue with LM193AH/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 LM193AH/883 part is unused and in its original packaging.
Return procedure for LM193AH/883:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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