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Texas Instruments LM193H/883
- Part No.:
- LM193H/883
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- TO-99-8 Metal Can
- Datasheet:
-
LM193H/883.pdf
- Description:
- LOW POWER LOW OFFSET VOLTAGE DUA
- Quantity:
- Payment:
- Shipping:
Inventory:4,455
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Product details
Overview
LM193H/883 from Texas Instruments is a radiation-hardened, dual precision voltage comparator in TO-99 metal can package, featuring 2.0 mV max input offset voltage, 0.4 mA supply current at 5 V, and operation from 2.0 VDC to 36 VDC single supply (±1.0 V to ±18 V dual). It enables ground-sensing limit detection and TTL/CMOS interfacing in space-grade analog monitoring circuits.
For engineers reviewing the LM193H/883 datasheet, LM193H/883 pinout, LM193H/883 application, or LM193H/883 equivalent, key selection criteria include its MIL-STD-883 Class B qualification, 100 krad(Si) TID tolerance, −55°C to +125°C operating range, uncommitted NPN open-collector outputs, and input common-mode range extending to ground on single supply.
Technical Context
The LM193H/883 implements two independent high-gain comparators with PNP input stages enabling rail-to-rail input common-mode range down to ground. Its bias network delivers supply-independent current draw across 2.0–36 VDC, and output transistors are uncommitted NPN collectors capable of wired-OR configurations and pull-up to any compatible voltage rail.
Designed for radiation-tolerant systems, it meets MIL-STD-883 Method 5005 Group A testing across −55°C, +25°C, and +125°C, with verified post-irradiation performance stability up to 100 krad(Si) total ionizing dose and ELDRS-free behavior under low-dose-rate conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.0 VDC to 36 VDC single supply; ±1.0 V to ±18 V dual supply - supports wide-input industrial and spacecraft bus voltages without level-shifting. |
| Input Offset Voltage | ±2.0 mV max at +25°C - ensures accurate threshold detection in precision limit-comparator and zero-crossing applications. |
| Supply Current | 0.4 mA typical at 5 V - enables long-life battery operation and low-power system monitoring. |
| Input Bias Current | −100 nA to −1.0 nA - minimizes loading error on high-impedance sensor sources and reference dividers. |
| Output Configuration | Open-collector NPN - allows flexible pull-up to logic rails (TTL/CMOS/ECL/MOS) or higher-voltage supplies up to 36 V. |
| Operating Temperature | −55°C to +125°C - qualified for military and space environments per MIL-STD-883. |
| Radiation Tolerance | 100 krad(Si) TID, ELDRS-free - validated for low-earth orbit and deep-space missions requiring long-term reliability. |
Pinout & Package
LM193H/883 is housed in an 8-pin TO-99 metal can package (package code LMC), hermetically sealed for high-reliability aerospace and defense applications. Thermal resistance θJA is 174°C/W in still air.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input (Comparator A) | Accepts reference or signal for comparison; common-mode range includes ground on single supply. |
| 2 | Non-Inverting Input (Comparator A) | Accepts monitored signal; differential input voltage may exceed V+ without damage. |
| 3 | Output (Comparator A) | Uncommitted NPN collector - requires external pull-up; sinks up to 6 mA at 1.5 V saturation. |
| 4 | GND / V− | Ground reference for single supply; negative rail for dual supply - input common-mode extends to this pin. |
| 5 | Non-Inverting Input (Comparator B) | Independent second comparator input; identical electrical specs to Pin 2. |
| 6 | Inverting Input (Comparator B) | Independent second comparator input; identical electrical specs to Pin 1. |
| 7 | Output (Comparator B) | Uncommitted NPN collector - electrically isolated from Pin 3; supports wired-OR with other open-collector outputs. |
| 8 | V+ | Positive supply rail - accepts 2.0–36 VDC; supply current independent of voltage magnitude. |
Key Features
| Feature | Design Value |
|---|---|
| Ground-sensing input stage | Input common-mode voltage range includes GND on single supply - eliminates need for negative rail in sensor interface circuits. |
| Single-supply operation | Functional from 2.0 VDC - enables compatibility with low-voltage microcontrollers and battery-powered telemetry systems. |
| Open-collector outputs | Two independent NPN outputs - support logic-level translation, wired-OR, and direct interfacing with TTL, CMOS, ECL, and MOS families. |
| Radiation hardening | 100 krad(Si) TID tolerance and ELDRS-free qualification - certified for use in satellites, launch vehicles, and nuclear instrumentation. |
| Low power consumption | 0.4 mA supply current at 5 V - reduces thermal load and extends mission life in thermally constrained enclosures. |
Applications
| Power Supply Monitor | Satellite Sensor Interface |
|---|---|
Use Scenario: Detecting undervoltage or overvoltage conditions on primary and backup power buses in spacecraft avionics. IC Role / Device Role / Timing Role: Dual comparator performing independent high/low threshold detection with hysteresis on each channel. Use Value: Ensures fault isolation and autonomous power management using only one device, reducing board area and interconnect complexity. | Use Scenario: Converting analog outputs from radiation-hardened temperature, pressure, and current sensors into digital logic signals for FPGA-based telemetry processing. IC Role / Device Role / Timing Role: Precision threshold detector translating sensor voltage ranges into clean CMOS-compatible logic levels. Use Value: Maintains accuracy across −55°C to +125°C and after 100 krad(Si) exposure, eliminating recalibration during mission lifetime. |
| Zero-Crossing Detector | MOS Clock Driver |
Use Scenario: Generating synchronized timing edges from AC line or oscillator waveforms in radiation-tolerant motor control or power conversion modules. IC Role / Device Role / Timing Role: Single-supply zero-crossing comparator with input referenced to ground and output driving Schmitt-trigger input. Use Value: Enables reliable edge detection without split supplies, reducing component count and improving noise immunity in high-noise power systems. | Use Scenario: Driving high-side and low-side MOSFET gates in radiation-hardened DC-DC converters using complementary squarewave outputs. IC Role / Device Role / Timing Role: Dual comparator configured as astable multivibrator generating non-overlapping gate drive signals. Use Value: Delivers precise dead-time control and rail-to-rail swing compatibility with 10 V–30 V gate drivers, sustaining timing integrity under irradiation. |
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 and radiation rating, but in 8-pin CDIP ceramic package (NAB) instead of TO-99 metal can. | Preferred for PCB-mounted designs requiring surface-mount compatibility and lower profile; less effective EMI shielding than TO-99. | Select LM193AJ/883 when board layout constraints prohibit through-hole metal cans or when automated assembly is required. |
| LM193AHRLQMLV | Identical TO-99 package and radiation spec, but QMLV-certified with full Group B screening including burn-in and parametric drift validation. | Required for Class V space programs demanding highest reliability assurance; adds cost and lead time vs. standard 883. | Choose LM193AHRLQMLV when mission-critical redundancy or extended lifetime (>15 years) mandates QMLV qualification beyond baseline 883. |
Compared with LM193AJ/883 and LM193AHRLQMLV, the LM193H/883 provides optimal balance of hermetic metal-can shielding, proven flight heritage, and streamlined qualification - making it ideal for cost-sensitive, radiation-tolerant programs where full QMLV is not mandated.
Availability
LM193H/883 is available at Aetrix Electronics and suitable for satellite power sequencing, radiation-hardened sensor interfaces, avionics health monitoring, and space-grade analog front-end designs requiring stable component supply across extended production cycles.
Supply support for LM193H/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 and embedded processing technologies, with decades of heritage in high-reliability aerospace components.
The LM193H/883 belongs to TI's radiation-hardened comparator family designed specifically for mission-critical space, defense, and nuclear applications where electrical stability under ionizing radiation is non-negotiable.
FAQ
What is the maximum total ionizing dose (TID) rating for LM193H/883?
The LM193H/883 is rated for 100 krad(Si) total ionizing dose per MIL-STD-883 Method 1019, with ELDRS-free performance confirmed under low-dose-rate testing. This specification applies to the exact LM193H/883 part number as delivered in TO-99 packaging and verified in the manufacturer's radiation test report SNOSAM2C.
Does LM193H/883 support single-supply operation with input signals referenced to ground?
Yes, LM193H/883 supports true single-supply operation with input common-mode voltage range extending to ground (0 V), enabling direct interfacing with grounded sensors and reference sources without level-shifting circuitry. This capability is explicitly specified in the Electrical Characteristics table for VCM at +V = 30 V.
What package type and pin count does LM193H/883 use?
LM193H/883 uses an 8-pin TO-99 metal can package (package code LMC), as confirmed in TI's PACKAGE OPTION ADDENDUM and schematic diagrams. The device has two independent comparators, each with dedicated inputs and open-collector outputs, plus shared V+ and GND pins.
Can LM193H/883 outputs be wired together for OR logic functions?
Yes, LM193H/883 features uncommitted NPN open-collector outputs that can be directly wired together to implement wired-OR logic, provided a single external pull-up resistor is used. This behavior is documented in the APPLICATION HINTS section and supported by the output saturation voltage specification of 0.4 V at 4 mA.
What is the input offset voltage specification for LM193H/883 at room temperature?
The input offset voltage for LM193H/883 is ±2.0 mV maximum at +25°C, as specified in the LM193A Electrical Characteristics DC Parameters table under Subgroup 1. This value is tighter than the base LM193 series (±5.0 mV) and reflects the enhanced precision of the 883-qualified variant.
LM193H/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
LM193H/883 FAQ
1.How can I place an order for LM193H/883 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM193H/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 LM193H/883 reliable?
The price and inventory of LM193H/883 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM193H/883 is usually 5 days.
3.What payment methods are accepted for LM193H/883?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM193H/883 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM193H/883?
LM193H/883 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM193H/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 LM193H/883?
For technical support, including LM193H/883 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM193H/883 requirements.
6.How does Aetrix verify that LM193H/883 is sourced from the original manufacturer or authorized distributors?
All LM193H/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 LM193H/883 meets industry standards.
7.What is the process for return or replacement of LM193H/883?
All LM193H/883 units undergo pre-shipment inspection (PSI). If there is an issue with LM193H/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 LM193H/883 part is unused and in its original packaging.
Return procedure for LM193H/883:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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