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Texas Instruments LM319M/NOPB
- Part No.:
- LM319M/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LM319M/NOPB.pdf
- Description:
- IC COMPARATOR 2 GEN PUR 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:6,575
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Product details
Overview
LM319M/NOPB from Texas Instruments is a high-speed dual comparator IC designed for precision threshold detection in industrial and embedded control systems. It operates from single 5-V or dual ±15-V supplies, delivers 80-ns typical response time, supports ±13-V input common-mode range, and drives TTL/RTL loads up to 25 mA per output. It is used in relay drivers, window detectors, and overvoltage protection circuits.
For engineers reviewing the LM319M/NOPB datasheet, LM319M/NOPB pinout, LM319M/NOPB application, or LM319M/NOPB equivalent, this page provides verified electrical specifications, SOIC-14 package details, real-world use cases, and validated alternative parts for supply continuity and design flexibility.
Technical Context
The LM319M/NOPB integrates two independent comparators on a single monolithic die with uncommitted NPN open-collector outputs, enabling direct interface with TTL, DTL, RTL, lamps, and relays. Its high common-mode slew rate and input isolation from system ground support robust operation in noisy environments.
It features internal compensation for stable high-speed switching, operates across 0°C to +70°C, and maintains specified performance at supply voltages from 5 V to ±15 V - with absolute maximum ratings including 36-V total supply and ±5-V differential input voltage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Response Time | 80 ns typical at ±15 V - enables fast edge detection in pulse-width modulation and motor commutation timing. |
| Input Offset Voltage | 8 mV max at 25°C - defines worst-case threshold error in precision level-sensing applications. |
| Input Bias Current | 1000 nA max at 25°C - ensures minimal loading on high-impedance sensor sources like thermistors or photodiodes. |
| Output Sink Current | 25 mA per channel - directly drives electromechanical relays or LED indicators without external buffers. |
| Supply Voltage Range | Single 5 V or dual ±15 V - supports compatibility with both logic-level and analog signal chains. |
| Input Common-Mode Range | ±13 V at ±15 V supply - allows comparison of signals referenced to non-ground potentials (e.g., floating battery monitors). |
| Operating Temperature | 0°C to +70°C - qualified for commercial-grade industrial control and instrumentation environments. |
Pinout & Package
LM319M/NOPB is housed in a 14-pin SOIC (D) package, 8.75 mm × 4.0 mm body size, 1.75 mm max height, with standard 1.27-mm pitch and RoHS-compliant matte tin (SN) lead finish. It follows JEDEC MS-012AB outline and is rated MSL Level-1 (unlimited floor life).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Output 1 | Open-collector NPN output - requires external pull-up to define logic-high level and drive load current. |
| 2 | GND 1 | Ground reference for comparator 1 - isolated from GND 2 to support dual-supply or split-ground configurations. |
| 3 | Input 1+ | Non-inverting input - accepts analog signals up to ±13 V common-mode range under ±15 V supply. |
| 4 | Input 1− | Inverting input - forms differential pair with Pin 3; input voltage difference ≥5 mV triggers output transition. |
| 5 | V− | Negative supply rail - connects to −15 V (or ground in single-supply mode); sets lower bound for input/output swing. |
| 6 | Output 2 | Open-collector NPN output - independently controllable; shares no internal nodes with Output 1. |
| 7 | GND 2 | Ground reference for comparator 2 - electrically separate from Pin 2 to prevent crosstalk in mixed-signal layouts. |
| 8 | Input 2+ | Non-inverting input - identical electrical characteristics to Pin 3; supports independent second threshold detection. |
| 9 | Input 2− | Inverting input - paired with Pin 8; enables dual-window or hysteresis-capable configurations. |
| 10 | V+ | Positive supply rail - connects to +15 V (or +5 V in single-supply mode); powers both comparators and output stages. |
| 11–14 | NC | No-connect pins - must remain unconnected; not internally bonded or functional. |
Key Features
| Feature | Design Value |
|---|---|
| Two independent comparators | Enables dual-threshold monitoring (e.g., over/under-voltage) in one IC, reducing board space and BOM count. |
| 80-ns response time | Supports real-time detection of fast transients in motor control feedback loops and digital signal integrity monitoring. |
| Open-collector outputs | Allows wired-OR logic, level translation across voltage domains, and direct driving of relays or LEDs up to 25 mA. |
| ±13-V input common-mode range | Permits direct comparison of signals referenced to non-ground potentials - critical in isolated power supply monitoring. |
| Single 5-V or dual ±15-V operation | Eliminates need for dedicated analog rails in mixed-signal systems; simplifies power architecture in PLC I/O modules. |
Applications
| Relay Driver Circuit | Window Detector |
|---|---|
Use Scenario: Controlling 12-V DC relay coils in programmable logic controller (PLC) output modules. IC Role / Device Role / Timing Role: Dual comparator compares sensed load voltage against upper/lower thresholds to activate/deactivate relay via open-collector outputs. Use Value: Eliminates discrete transistor buffers; 25-mA sink capability directly energizes relay coil while 80-ns response prevents chatter during transient overloads. |
Use Scenario: Monitoring battery pack voltage in portable medical devices to trigger low/high alerts before shutdown. IC Role / Device Role / Timing Role: LM319M/NOPB implements dual-threshold detection using Input 1+ and Input 2+ as reference points, with Outputs 1 and 2 indicating in-range/out-of-range states. Use Value: Single-package solution reduces footprint vs. two discrete comparators; ±13-V input range accommodates full 0–16.8-V Li-ion stack without level-shifting. |
| Overvoltage Protection | Pulse Width Modulation Comparator |
Use Scenario: Safeguarding FPGA I/O banks by cutting power when input voltage exceeds 3.6 V in telecom line-card designs. IC Role / Device Role / Timing Role: One comparator channel compares sensed rail voltage against precision reference; output disables MOSFET pass device within 80 ns. Use Value: Fast response prevents latch-up or ESD damage; open-collector output interfaces directly with gate driver logic without level translators. |
Use Scenario: Generating PWM signals in brushless DC motor controllers by comparing sawtooth waveform against control voltage. IC Role / Device Role / Timing Role: LM319M/NOPB acts as high-speed comparator in triangle-wave modulation loop, converting analog command into precise duty-cycle output. Use Value: 80-ns propagation delay minimizes phase lag between command and PWM edge, improving torque regulation accuracy at high switching frequencies. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual high-speed comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM393DR | Slower 1.3-µs response, lower supply current (0.8 mA), no negative supply support - operates only from 2–36 V single supply. | Suitable for low-power, cost-sensitive level-shifting or simple ON/OFF control where speed <100 kHz is acceptable. | Select LM393DR when power efficiency and single-supply simplicity outweigh need for sub-100-ns timing or dual-rail operation. |
| TL331IDBVR | Single comparator, 200-ns response, rail-to-rail input, 60-µA supply current - lacks dual-channel integration and ±15-V rating. | Better for space-constrained, ultra-low-power sensor interfaces but requires two units to match LM319M/NOPB's dual functionality. | Choose TL331IDBVR only if design prioritizes quiescent current <100 µA and can accommodate separate channels or accept slower response. |
Compared with LM319M/NOPB, LM393DR trades speed and dual-rail capability for lower cost and power, while TL331IDBVR offers rail-to-rail inputs and microamp bias but sacrifices channel count and high-voltage tolerance - making LM319M/NOPB uniquely suited for industrial timing-critical dual-threshold detection.
Availability
LM319M/NOPB is available at Aetrix Electronics and suitable for industrial control systems, PLC I/O modules, and power supply monitoring applications requiring stable component supply and long-term production continuity.
Supply support for LM319M/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 specializing in analog and embedded processing technologies, with decades of expertise in precision signal conditioning and high-reliability industrial ICs.
The LM319M/NOPB belongs to TI's legacy high-speed comparator product line, engineered for robust threshold detection in harsh environments where speed, noise immunity, and wide supply flexibility are essential.
FAQ
What is the maximum operating supply voltage for LM319M/NOPB?
The LM319M/NOPB supports a total supply voltage up to 36 V, with absolute maximum ratings specifying ±15 V dual supply or 5–36 V single supply. Operation beyond ±15 V or above 36 V total risks permanent damage. The LM319M/NOPB datasheet confirms 36-V absolute maximum total supply voltage and ±15-V recommended dual-rail operation.
Does LM319M/NOPB support single-supply operation?
Yes, LM319M/NOPB operates from a single 5-V supply, with input common-mode range extending from 1 V to 3 V under that condition. Its open-collector outputs require external pull-up resistors, and the device maintains specified response time and offset performance across the full 5–36 V single-supply range.
What is the input offset voltage specification for LM319M/NOPB?
The LM319M/NOPB has a maximum input offset voltage of 8 mV at 25°C, as specified in Section 5.5 of the official TI datasheet SNOSBJ2B. This value represents the worst-case voltage difference required at the inputs to drive either output within 1 V of its rail under 1-mA load conditions.
Can LM319M/NOPB drive a mechanical relay directly?
Yes, LM319M/NOPB can directly drive a mechanical relay coil with up to 25 mA sink current per output, provided the relay coil voltage matches the pull-up supply (e.g., 5 V or 12 V). Its open-collector NPN output stage and saturation voltage ≤1.5 V at 25 mA ensure reliable activation without external transistors.
Is LM319M/NOPB pin-compatible with LM393?
No, LM319M/NOPB is not pin-compatible with LM393. LM319M/NOPB uses a 14-pin SOIC package with dual ground pins (Pins 2 and 7), separate V+ and V− rails (Pins 10 and 5), and four dedicated inputs; LM393 uses an 8-pin SOIC with shared ground and single supply. Their pinouts, supply architecture, and channel count differ fundamentally.
LM319M/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Type:
- General Purpose
- Number of Elements:
- 2
- Output Type:
- DTL, Open-Collector, Open-Emitter, RTL, TTL
- Voltage - Supply, Single/Dual (±):
- 5V ~ 36V, ±2.5V ~ 18V
- :
- 8mV @ ±15V
- Voltage - Input Offset (Max):
- 1µA @ ±15V
- Current - Input Bias (Max):
- -
- Current - Output (Typ):
- 12.5mA
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- -
- Propagation Delay (Max):
- -
- Hysteresis:
- 0°C ~ 70°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 14-SOIC
LM319M/NOPB FAQ
1.How can I place an order for LM319M/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM319M/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 LM319M/NOPB reliable?
The price and inventory of LM319M/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM319M/NOPB is usually 5 days.
3.What payment methods are accepted for LM319M/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM319M/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM319M/NOPB?
LM319M/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM319M/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 LM319M/NOPB?
For technical support, including LM319M/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM319M/NOPB requirements.
6.How does Aetrix verify that LM319M/NOPB is sourced from the original manufacturer or authorized distributors?
All LM319M/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 LM319M/NOPB meets industry standards.
7.What is the process for return or replacement of LM319M/NOPB?
All LM319M/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM319M/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 LM319M/NOPB part is unused and in its original packaging.
Return procedure for LM319M/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM319M/NOPB Tags
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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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LM2903P
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