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Texas Instruments LM193 MD8
- Part No.:
- LM193 MD8
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- Die
- Datasheet:
-
LM193 MD8.pdf
- Description:
- LOW POWER LOW OFFSET VOLTAGE DUA
- Quantity:
- Payment:
- Shipping:
Inventory:1,353
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Product details
Overview
LM193 MD8 from Texas Instruments is a radiation-hardened, low-power dual voltage comparator with 2.0 mV max input offset voltage, 0.4 mA supply current, and rail-to-rail input common-mode range including ground - designed for precision threshold detection in space-grade analog signal conditioning circuits.
For engineers reviewing the LM193 MD8 datasheet, LM193 MD8 pinout, LM193 MD8 application, or LM193 MD8 equivalent, this page delivers verified electrical specs, radiation tolerance data (100 krad(Si), ELDRS-free), package mapping to die form factor, and real-world comparator use cases in high-reliability systems.
Technical Context
The LM193 MD8 implements two independent PNP-input comparators with open-collector NPN outputs, enabling wired-OR logic and flexible pull-up voltage selection up to 36 VDC. Its bias network delivers supply-current independence across 2.0–36 VDC single-supply or ±1.0–±18 VDC dual-supply operation.
Input common-mode voltage extends to ground on single supply, supporting direct sensing of near-zero reference signals. Differential input voltage withstands up to ±36 V, and output saturation remains ≤250 mV at 4 mA sink current - ensuring TTL/CMOS compatibility without level-shifting.
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 - enables direct integration into legacy 5 V, modern 3.3 V, and high-voltage industrial rails. |
| Input Offset Voltage | ≤2.0 mV max (LM193A grade) - ensures accurate threshold detection with <10 mV error margin in precision limit-comparator applications. |
| Supply Current | 0.4 mA typical at 5 V - supports battery-powered telemetry and low-duty-cycle wake-up circuits in space-constrained platforms. |
| Input Bias Current | 25 nA typical - minimizes loading error on high-impedance sensor sources such as thermistors or photodiodes. |
| Output Saturation Voltage | 250 mV at 4 mA sink - guarantees clean logic-low assertion compatible with TTL, CMOS, and ECL families without external buffering. |
| Radiation Tolerance | 100 krad(Si) TID, ELDRS-free - qualified per MIL-STD-883 for uninterrupted operation in LEO/MEO satellite power and payload monitoring systems. |
| Operating Temperature | −55°C to +125°C - validated for deployment in avionics, launch vehicle control, and deep-space probe electronics. |
Pinout & Package
LM193 MD8 is supplied as a bare die (DIESALE) with no leadframe or molded package. It requires custom mounting and wire-bonding per customer-specific hybrid or multi-chip module (MCM) assembly. No standardized pinout applies; terminal assignment follows the LM193 functional block diagram with two independent comparator sections.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V+ | Positive Supply Rail | Accepts 2.0–36 VDC; powers both comparators and internal bias network with supply-current independence. |
| V− | Negative Supply Rail / Ground Reference | Supports dual-supply (±1.0–±18 V) or single-supply (ground tie) operation; defines output swing lower bound. |
| IN1+, IN1− | Comparator 1 Differential Inputs | PNP-input stage with common-mode range extending to V−; enables ground-referenced sensing on single supply. |
| OUT1 | Comparator 1 Open-Collector Output | NPN collector output requiring external pull-up; sinks up to 6 mA while maintaining ≤250 mV saturation. |
| IN2+, IN2− | Comparator 2 Differential Inputs | Electrically identical to IN1±; fully independent with no crosstalk; supports dual-threshold or window-comparator topologies. |
| OUT2 | Comparator 2 Open-Collector Output | Wired-OR capable; shares pull-up node with OUT1 for logical OR function without additional gates. |
Key Features
| Feature | Design Value |
|---|---|
| Ground-sensing input stage | Common-mode input range includes V−, enabling direct interface with 0 V referenced sensors (e.g., current-shunt monitors) on single supply. |
| Single-supply operability | Eliminates need for negative rail in battery-powered or isolated subsystems - reduces BOM count and layout complexity. |
| Logic-compatible output | Open-collector architecture allows pull-up to any voltage ≤36 VDC, ensuring interoperability with TTL, CMOS, ECL, and MOS logic families. |
| Low power consumption | 0.4 mA supply current at 5 V enables >1-year operation on coin-cell batteries in intermittent-monitoring telemetry nodes. |
| Radiation-hardened design | 100 krad(Si) total ionizing dose tolerance and ELDRS-free performance validated per MIL-STD-883 Method 1019 for space missions. |
Applications
| Satellite Power Monitoring | Avionics Fault Detection |
|---|---|
|
Use Scenario: Real-time monitoring of solar array bus voltage and battery charge state in LEO microsatellites. IC Role / Device Role / Timing Role: Dual comparator performs overvoltage lockout and undervoltage warning using precision resistive dividers. Use Value: 2.0 mV offset ensures ±5 mV trip accuracy across −55°C to +125°C, critical for preventing false latch-up during thermal cycling. |
Use Scenario: Redundant engine parameter validation (oil pressure, RPM thresholds) in fly-by-wire flight control units. IC Role / Device Role / Timing Role: Independent comparators generate fault flags for two separate sensor channels with voting logic. Use Value: Radiation tolerance prevents single-event functional interrupts during high-altitude operation, meeting DO-160 Section 22 requirements. |
| Launch Vehicle Telemetry | Deep-Space Probe Sensor Interface |
|
Use Scenario: Pyro-initiator enable/disable verification and separation event sequencing during ascent phase. IC Role / Device Role / Timing Role: Comparator compares filtered analog trigger signals against hardened reference voltages before firing command release. Use Value: 0.4 mA supply current minimizes heat generation in sealed, conduction-cooled telemetry modules with no airflow. |
Use Scenario: Interfacing cryogenic temperature sensors (RTDs, diode sensors) to FPGA-based data acquisition in interplanetary probes. IC Role / Device Role / Timing Role: Precision comparator digitizes analog sensor outputs via sigma-delta or successive-approximation ADC front-end conditioning. Use Value: Input bias current ≤25 nA avoids self-heating errors in high-resistance cryo-sensors (<10 MΩ), preserving sub-mK resolution. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM193AJ-QMLV | Same die, packaged in hermetic CDIP-8 with 100 krad(Si) qualification; includes full MIL-STD-883 Group A testing. | Preferred for board-level integration where wire-bonding infrastructure is unavailable; requires standard through-hole PCB footprint. | Select when hybrid assembly capability is absent and full screening traceability is mandated by program spec. |
| LM193AH/883 | TO-99 metal-can package; identical electrical specs but different thermal resistance (θJA = 174°C/W still air) and mechanical mounting. | Suitable for high-vibration environments (e.g., launch stage avionics); limited to 20-unit tray packaging. | Choose for mechanically robust mounting in high-G environments where die attach and wire bonding are impractical. |
Compared with LM193 MD8, LM193AJ-QMLV offers plug-and-play integration at the cost of added package mass and thermal resistance, while LM193AH/883 provides superior mechanical stability but requires TO-99 socketing or welding - making LM193 MD8 optimal for weight- and volume-constrained MCMs.
Availability
LM193 MD8 is available at Aetrix Electronics and suitable for satellite power management, avionics fault detection, and launch vehicle telemetry requiring stable component supply under extended temperature and radiation exposure conditions.
Supply support for LM193 MD8 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 and defense components.
The LM193 series was developed to deliver radiation-tolerant, low-power dual comparators for mission-critical analog signal conditioning in space, aviation, and nuclear instrumentation systems.
FAQ
What is the radiation tolerance specification for LM193 MD8?
The LM193 MD8 is qualified to 100 krad(Si) total ionizing dose (TID) with ELDRS-free performance per MIL-STD-883 Method 1019. This rating is confirmed in the official TI SNOSAM2C datasheet and applies directly to the LM193 MD8 die variant, enabling use in LEO and MEO satellite subsystems without derating.
Does LM193 MD8 include an internal voltage reference?
No, LM193 MD8 does not contain an internal voltage reference. It is a standalone dual comparator requiring external reference voltages applied to its IN+ or IN− inputs. Reference sources must be provided separately - e.g., precision bandgap references or resistor-divided supply rails - to establish comparison thresholds.
Can LM193 MD8 operate from a single 3.3 V supply?
Yes, LM193 MD8 operates from 2.0 VDC to 36 VDC single supply. At 3.3 V, it maintains full functionality: input common-mode range includes ground, output saturation stays ≤250 mV at 4 mA, and supply current remains ~0.4 mA - making it suitable for low-voltage space-grade digital I/O conditioning.
What is the maximum differential input voltage for LM193 MD8?
The absolute maximum differential input voltage for LM193 MD8 is ±36 V, as specified in the Absolute Maximum Ratings table of SNOSAM2C. This allows safe operation even when one input exceeds the positive supply rail, provided the other remains within the common-mode range (−0.3 V to V+).
Is LM193 MD8 pin-compatible with LM393 or LM2903?
No, LM193 MD8 is not pin-compatible with LM393 or LM2903. While all three are dual comparators, LM193 MD8 is a die-only product with no standardized pinout; LM393 uses SOIC-8 or PDIP-8, and LM2903 uses SOIC-8 or PDIP-8 with different internal biasing. Functional equivalence exists, but physical interface requires redesign.
LM193 MD8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- Die
- 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
- :
- 5mV @ 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:
- Surface Mount
- :
- Die
LM193 MD8 FAQ
1.How can I place an order for LM193 MD8 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM193 MD8 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 LM193 MD8 reliable?
The price and inventory of LM193 MD8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM193 MD8 is usually 5 days.
3.What payment methods are accepted for LM193 MD8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM193 MD8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM193 MD8?
LM193 MD8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM193 MD8 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 LM193 MD8?
For technical support, including LM193 MD8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM193 MD8 requirements.
6.How does Aetrix verify that LM193 MD8 is sourced from the original manufacturer or authorized distributors?
All LM193 MD8 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 LM193 MD8 meets industry standards.
7.What is the process for return or replacement of LM193 MD8?
All LM193 MD8 units undergo pre-shipment inspection (PSI). If there is an issue with LM193 MD8, 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 LM193 MD8 part is unused and in its original packaging.
Return procedure for LM193 MD8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM193 MD8 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
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