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Texas Instruments LM193H/NOPB
- Part No.:
- LM193H/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- TO-99-8 Metal Can
- Datasheet:
-
LM193H/NOPB.pdf
- Description:
- IC COMPARATOR 2 GEN PUR TO99-8
- Quantity:
- Payment:
- Shipping:
Inventory:3,727
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Product details
Overview
LM193H/NOPB from Texas Instruments is a dual, low-power, precision voltage comparator with rail-to-rail input common-mode range including ground, ±3 mV max input offset voltage, 0.4 mA supply current at 5 V, and open-collector outputs compatible with TTL/CMOS logic - used in battery-powered limit detection and industrial threshold monitoring circuits.
For engineers reviewing the LM193H/NOPB datasheet, LM193H/NOPB pinout, LM193H/NOPB application, or LM193H/NOPB equivalent, key selection criteria include single-supply operation down to 2.0 V, input bias current of 25 nA, output sink capability up to 16 mA, and TO-99 metal-can package suitability for high-reliability analog sensing.
Technical Context
The LM193H/NOPB integrates two independent PNP-input comparators with matched internal biasing, enabling stable operation from 2.0 V to 36 V single supply or ±1.0 V to ±18 V dual supply. Its input stage allows common-mode voltage down to ground while maintaining 25 nA input bias current and ±5 nA input offset current.
Each comparator features an open-collector NPN output transistor capable of sinking ≥6 mA at 250 mV saturation voltage (4 mA load), with differential input voltage tolerance up to 36 V and output logic compatibility across TTL, DTL, ECL, MOS, and CMOS families.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.0 V to 36 V single supply; enables direct interface with 3.3 V, 5 V, 12 V, and 24 V systems without level-shifting. |
| Input Offset Voltage | ±3 mV max at 25°C; ensures accurate threshold detection within ±0.1% error for 3 V reference signals. |
| Supply Current | 0.4 mA typical at 5 V; supports >1-year battery life in coin-cell–powered sensor nodes drawing <1 µA average. |
| Input Bias Current | 25 nA typical; permits use with high-impedance sources (e.g., thermistors, photodiodes) without signal loading. |
| Output Saturation Voltage | 250 mV at 4 mA sink; guarantees reliable LOW-level logic assertion even under moderate load conditions. |
| Input Common-Mode Range | Includes ground (0 V) to V+−1.5 V; allows direct sensing of signals referenced to system ground in single-supply designs. |
| Output Logic Compatibility | TTL/CMOS/DTL/ECL/MOS; eliminates need for external level translators when driving mixed-logic digital interfaces. |
Pinout & Package
LM193H/NOPB uses the TO-99 (8-pin metal can) package, 9.08 mm × 9.08 mm body size, hermetically sealed for military-grade reliability and thermal stability in harsh environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUTA (Pin 1) | Open-collector output, Channel A | Sinks current to ground; requires external pull-up resistor to define HIGH logic level and interface voltage. |
| –INA (Pin 2) | Inverting input, Channel A | Accepts reference or threshold voltage; input bias current flows *out* of pin due to PNP input stage. |
| +INA (Pin 3) | Non-inverting input, Channel A | Accepts sensed signal; common-mode range includes ground, enabling true zero-volt detection. |
| GND (Pin 4) | Ground reference | System ground return for both comparators; serves as V– in single-supply configurations. |
| +INB (Pin 5) | Non-inverting input, Channel B | Independent second sensing input; identical electrical characteristics to +INA. |
| –INB (Pin 6) | Inverting input, Channel B | Independent second reference input; matches –INA performance and bias behavior. |
| OUTB (Pin 7) | Open-collector output, Channel B | Electrically isolated from OUTA; supports wired-OR logic or independent digital interfacing. |
| V+ (Pin 8) | Positive power supply | Accepts 2.0–36 V; supply current independent of voltage magnitude, ensuring stable operation across wide rails. |
Key Features
| Feature | Design Value |
|---|---|
| Single-supply operation from 2.0 V | Enables direct integration into ultra-low-voltage battery systems (e.g., Li-SOCl₂, alkaline) without charge pumps. |
| Input common-mode range includes ground | Eliminates need for negative supply or level-shifting circuitry when monitoring ground-referenced sensors. |
| 0.4 mA supply current (both channels) | Reduces power budget impact in always-on monitoring applications; supports energy harvesting designs. |
| 25 nA input bias current | Preserves accuracy with high-Z sources like RTDs, capacitive sensors, or high-value divider networks. |
| Open-collector outputs with 16 mA sink capability | Allows flexible logic interfacing, wired-OR bus structures, and direct drive of LEDs or small relays. |
Applications
| Battery Voltage Monitor | Industrial Overvoltage Protection |
|---|---|
|
Use Scenario: Detecting when a 12 V lead-acid battery drops below 11.5 V or rises above 14.4 V during charging cycles. IC Role / Device Role / Timing Role: Dual comparator configured as window detector - one channel monitors lower threshold, the other upper threshold. Use Value: 25 nA input bias avoids loading the resistive divider; ±3 mV offset ensures ±0.03 V detection accuracy at 12 V scale. |
Use Scenario: Shutting down motor drives if DC bus voltage exceeds 400 V in industrial inverters. IC Role / Device Role / Timing Role: High-side comparator comparing scaled bus voltage against precision reference, triggering fault latch. Use Value: 36 V absolute max differential input withstands transient spikes; TO-99 package provides thermal robustness in high-temp enclosures. |
| Zero-Crossing Detector (AC Mains) | Thermal Trip Circuit |
|
Use Scenario: Generating synchronized timing pulses for TRIAC dimmers using 230 V AC line voltage. IC Role / Device Role / Timing Role: Single comparator with resistive divider and clamping diodes detecting polarity reversal of rectified AC waveform. Use Value: Input common-mode range including ground allows direct connection to center-tapped transformer secondary; 300 ns response time ensures sub-microsecond edge detection. |
Use Scenario: Cutting power to a heating element when thermistor voltage crosses 2.05 V (corresponding to 120°C). IC Role / Device Role / Timing Role: Precision threshold comparator with 1% tolerance reference, driving optocoupler-isolated shutdown path. Use Value: 0.4 mA supply current minimizes self-heating error in thermistor measurement; TO-99 metal can improves long-term drift stability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM393DR | SOIC-8 package; 2.0–36 V supply; ±5 mV max offset; 0.4 mA supply current; same functional pinout. | Surface-mount assembly; lower thermal mass; not suitable for hermetic or high-reliability mil-spec environments. | Select LM393DR for cost-sensitive, high-volume PCB production where TO-99 mechanical robustness is unnecessary. |
| LM2903PWR | TSOP-8 package; −40°C to +85°C temp range; ±7 mV max offset; 0.4 mA supply current; identical electrical specs except wider offset tolerance. | Automotive-grade qualification; AEC-Q100 compliant; optimized for under-hood temperature cycling. | Select LM2903PWR for automotive body electronics requiring extended temperature operation and qualification traceability. |
Compared with LM193H/NOPB, LM393DR offers identical comparator functionality in a smaller SOIC package but lacks hermetic sealing and military-grade temperature range; LM2903PWR trades tighter offset for broader automotive qualification and higher production volume support.
Availability
LM193H/NOPB is available at Aetrix Electronics and suitable for battery-powered instrumentation, industrial overvoltage protection, and thermal safety cutoff systems requiring stable component supply across extended product lifecycles.
Supply support for LM193H/NOPB 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, embedded processing, and connectivity solutions with emphasis on reliability, precision, and power efficiency.
The LM193H/NOPB belongs to TI's legacy precision comparator family designed for high-stability, low-power analog threshold detection in military, aerospace, and industrial control systems requiring hermetic packaging and extended temperature operation.
FAQ
What is the operating temperature range for LM193H/NOPB?
The LM193H/NOPB is rated for operation from −55°C to +125°C junction temperature, making it suitable for extreme-environment applications such as avionics, downhole oilfield tools, and military electronics where standard commercial comparators fail. This full military-grade range is confirmed in the SNOSBJ6G datasheet Section 6.3 and applies specifically to the LM193H/NOPB variant in TO-99 packaging.
Does LM193H/NOPB require dual supplies to operate?
No, LM193H/NOPB operates fully from a single supply ranging from 2.0 V to 36 V, with input common-mode voltage extending down to ground. Its PNP input stage and open-collector outputs eliminate the need for negative rails - a key design advantage confirmed in the "Description" and "Features" sections of the official TI datasheet.
Can LM193H/NOPB drive TTL logic directly?
Yes, LM193H/NOPB outputs are explicitly rated for TTL, DTL, ECL, MOS, and CMOS logic compatibility per the datasheet Features list. When used with a pull-up resistor to Vcc (e.g., 5 V), its 250 mV saturation voltage at 4 mA ensures valid LOW-level assertion, and its open-collector structure allows direct wired-OR connection to shared buses.
What is the maximum output sink current for LM193H/NOPB?
The LM193H/NOPB output transistors can sink up to 16 mA while maintaining ≤400 mV saturation voltage, as specified in Electrical Characteristics Table 6.5. This value is guaranteed across the full operating temperature range and enables direct drive of LEDs, small relays, or logic inputs without external buffering.
Is LM193H/NOPB pin-compatible with LM393 or LM2903?
LM193H/NOPB shares identical pin functions with LM393 and LM2903 in their respective TO-99, SOIC, and PDIP packages - however, LM193H/NOPB uses the TO-99 metal-can package (8-pin), while LM393 and LM2903 are commonly offered in SOIC-8 or PDIP-8. Pin numbering and terminal roles match exactly per the "Pin Functions" table in Section 5 of SNOSBJ6G, but physical package dimensions differ.
LM193H/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- TO-99-8 Metal Can
- Series:
- -
- Packaging:
- Box
- 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 @ 30V
- Voltage - Input Offset (Max):
- 0.1µA @ 5V
- Current - Input Bias (Max):
- 16mA @ 5V
- Current - Output (Typ):
- 2.5mA
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- 700ns
- Propagation Delay (Max):
- -
- Hysteresis:
- -55°C ~ 125°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Through Hole
- :
- TO-99-8
LM193H/NOPB FAQ
1.How can I place an order for LM193H/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM193H/NOPB 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/NOPB reliable?
The price and inventory of LM193H/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM193H/NOPB is usually 5 days.
3.What payment methods are accepted for LM193H/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM193H/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM193H/NOPB?
LM193H/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM193H/NOPB 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/NOPB?
For technical support, including LM193H/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM193H/NOPB requirements.
6.How does Aetrix verify that LM193H/NOPB is sourced from the original manufacturer or authorized distributors?
All LM193H/NOPB 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/NOPB meets industry standards.
7.What is the process for return or replacement of LM193H/NOPB?
All LM193H/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM193H/NOPB, 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/NOPB part is unused and in its original packaging.
Return procedure for LM193H/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM193H/NOPB Tags
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LM2903DR
Texas Instruments
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LM339DR
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LM339PWR
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LM393DT
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LM2901PWR
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LM2903DT
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LM393DR
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LM239DR
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LM339APWR
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LM2903P
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LM393ADR
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NCX2200GMAZ
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