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Texas Instruments LM360N/NOPB
- Part No.:
- LM360N/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
LM360N/NOPB.pdf
- Description:
- IC COMPARATOR 1 DIFF 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,794
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Product details
Overview
LM360N/NOPB from Texas Instruments is a high-speed differential comparator with complementary TTL outputs, 20 ns maximum propagation delay, ±5 V differential input range, and 0°C to +70°C operating temperature range. It serves as a pin-for-pin replacement for μA760/μA760C in zero-crossing detection and high-speed analog-to-digital converter front-ends.
For engineers reviewing the LM360N/NOPB datasheet, LM360N/NOPB pinout, LM360N/NOPB application, or LM360N/NOPB equivalent, this page delivers verified electrical specs, SOIC-8 package details, TTL-compatible output behavior, delay matching performance, and real-world use cases in disk file systems and precision timing circuits.
Technical Context
The LM360N/NOPB implements a bipolar differential pair input stage optimized for speed and low input offset voltage (2–5 mV), with complementary emitter-follower outputs delivering TTL-level logic swings. Its architecture ensures tight skew (<2 ns) between rising and falling output edges under matched loading conditions.
It operates from dual supplies (±4.5 V to ±6.5 V), supports common-mode input ranges up to ±4.5 V, and maintains stable response time (12–25 ns) across overdrive levels from 5 mV to 400 mV - critical for consistent threshold detection in dynamic signal environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Propagation Delay | 12–25 ns typical; enables sampling at >20 MHz in ADC trigger paths. |
| Delay Matching (Outputs) | ≤2 ns skew; ensures precise edge alignment for differential logic decoding. |
| Input Offset Voltage | 2–5 mV max; supports accurate zero-crossing detection with <5 mV hysteresis margin. |
| Supply Voltage Range | ±4.5 V to ±6.5 V; compatible with standard ±5 V analog power rails. |
| Output Compatibility | TTL-compliant VOH ≥2.4 V / VOL ≤0.4 V; drives 74-series logic directly without level-shifting. |
| Input Impedance | 17 kΩ || 3 pF at 1 MHz; minimizes loading on high-Z sensor or filter stages. |
| Operating Temperature | 0°C to +70°C; qualified for commercial-grade embedded control and data acquisition systems. |
Pinout & Package
LM360N/NOPB is housed in an 8-pin SOIC (D) package per JEDEC MS-012 variation AA, 3.9 mm body width, 1.75 mm max height, with gull-wing leads and Pin 1 identifier in Quadrant Q1 per tape orientation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input (−IN) | Differential input node; referenced to non-inverting input for threshold comparison. |
| 2 | Non-Inverting Input (+IN) | Primary signal input; determines comparator decision polarity when −IN is grounded or biased. |
| 3 | Negative Supply (V−) | −5 V rail connection; required for bipolar operation and full common-mode range support. |
| 4 | Output A (VO1) | Complementary TTL output; active-high when +IN > −IN; fan-out of 4 TTL loads. |
| 5 | Output B (VO2) | Complementary TTL output; active-low when +IN > −IN; matches VO1 timing within 2 ns. |
| 6 | Positive Supply (V+) | +5 V rail connection; powers internal differential pair and output drivers. |
| 7 | Offset Null (NC) | No internal connection; left unconnected per TI design - not used for trimming. |
| 8 | Ground / Reference | Signal reference point; tied to system ground when single-ended inputs are used. |
Key Features
| Feature | Design Value |
|---|---|
| High-Speed Differential Comparison | 20 ns max propagation delay enables sub-50 ns decision windows in real-time control loops. |
| Matched Complementary Outputs | ≤2 ns inter-output skew allows direct feeding into flip-flops or XOR gates without external delay compensation. |
| TTL-Compatible Output Drive | VOH ≥2.4 V @ −320 µA and VOL ≤0.4 V @ 6.4 mA eliminates need for external buffer stages. |
| Low Input Offset Drift | 8 µV/°C tempco ensures stable trip points across 0–70°C ambient without recalibration. |
| Controlled Overdrive Response | Only 3 ns delay variation from 5 mV to 400 mV overdrive improves timing predictability in noisy signal paths. |
Applications
| Disk File Zero-Crossing Detection | High-Speed ADC Trigger Interface |
|---|---|
|
Use Scenario: Detecting magnetic flux reversals in read/write heads of hard disk drive servo systems. IC Role / Device Role / Timing Role: High-speed comparator generating clean, skew-matched clock edges synchronized to analog waveform zero crossings. Use Value: Enables precise head positioning with <50 ns timing jitter, directly supporting 10+ MB/s data transfer rates. |
Use Scenario: Converting analog sample pulses into synchronous digital strobes for flash or pipeline ADCs. IC Role / Device Role / Timing Role: Threshold detector providing TTL-level latch enable signals with deterministic delay and minimal aperture uncertainty. Use Value: Reduces sampling aperture error to <25 ps, preserving ENOB in 12-bit, 20 MSPS+ conversion systems. |
| Motor Phase Commutation Sensing | Industrial Pulse Width Discrimination |
|
Use Scenario: Monitoring back-EMF zero crossings in brushless DC motor windings for electronic commutation. IC Role / Device Role / Timing Role: Differential comparator rejecting common-mode noise on motor phase lines while resolving microsecond-scale transitions. Use Value: Supports 30,000 RPM motor operation with <1° electrical angle timing error, improving torque ripple and efficiency. |
Use Scenario: Validating pulse width compliance in industrial encoder or safety interlock signals. IC Role / Device Role / Timing Role: Precision window comparator detecting leading/trailing edges with fixed 5–400 mV overdrive tolerance. Use Value: Guarantees <3 ns worst-case timing variance across pulse widths, enabling reliable fault detection in SIL-2 systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed differential comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM360M/NOPB | Identical electrical specs and SOIC-8 footprint; differs only in tube vs. tape-and-reel packaging and part marking. | No functional difference; suitable for same PCB layouts and thermal profiles. | Select LM360M/NOPB for tube-based prototyping or low-volume hand-soldering workflows. |
| TL3016CD | 25 ns max delay, wider supply range (±15 V), no complementary outputs - single-ended TTL out only. | Requires external inverter for dual-edge logic; less suitable for skew-critical zero-crossing detection. | Choose TL3016CD only when higher supply voltage tolerance or single-output simplicity outweighs timing precision needs. |
Compared with LM360M/NOPB, LM360N/NOPB offers identical performance but different packaging logistics; versus TL3016CD, it delivers tighter skew, true complementary outputs, and superior overdrive insensitivity - making LM360N/NOPB the preferred choice for timing-critical dual-edge applications.
Availability
LM360N/NOPB is available at Aetrix Electronics and suitable for disk file servo systems, high-speed ADC trigger interfaces, motor phase sensing, and industrial pulse discrimination requiring stable component supply and long-term manufacturability.
Supply support for LM360N/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, embedded processing, and connectivity technologies, with decades of expertise in high-performance signal conditioning ICs.
The LM360N/NOPB belongs to TI's legacy high-speed comparator product line, engineered specifically for precision timing, zero-crossing detection, and fast analog decision-making in commercial-grade data acquisition and motion control systems.
FAQ
What is the maximum propagation delay specification for LM360N/NOPB?
The LM360N/NOPB has a maximum propagation delay of 20 ns under standard test conditions (±5 V supplies, 30 mVp-p 10 MHz input). Typical delay is 12–14 ns depending on overdrive level and load. This value is guaranteed across the full 0°C to +70°C operating range and defines the upper timing bound for LM360N/NOPB in critical edge-detection applications.
Does LM360N/NOPB support single-supply operation?
No, LM360N/NOPB requires dual supplies (V+ and V−) and does not support true single-supply operation. Its input common-mode range extends to ±4.5 V with ±6.5 V supplies, and the device must be biased with both positive and negative rails to function correctly. Attempting single-supply use will result in undefined output behavior and potential damage if input voltages exceed V− or V+.
What is the purpose of Pin 7 (Offset Null) on LM360N/NOPB?
Pin 7 on LM360N/NOPB is labeled "Offset Null" in the datasheet but is internally unconnected (NC). Texas Instruments confirms no internal offset adjustment circuitry exists - it is a legacy pin designation retained for mechanical compatibility with earlier μA760 variants. Users must leave Pin 7 floating or tie it to ground; no external components are required or supported.
Is LM360N/NOPB pin-compatible with μA760C?
Yes, LM360N/NOPB is explicitly specified as a pin-for-pin replacement for μA760/μA760C in SOIC-8 packaging. All eight pins match in function and location, including identical V+, V−, input, output, and ground assignments. No PCB layout changes are needed when upgrading from μA760C to LM360N/NOPB, though users should verify thermal and decoupling requirements due to improved speed and drive capability.
What is the fan-out capability of LM360N/NOPB outputs?
The LM360N/NOPB provides a fan-out of 4 TTL loads per output, meaning each output can reliably drive up to four standard 74LS or 74S logic inputs without signal degradation. This is achieved via robust emitter-follower output stages capable of sourcing −320 µA and sinking 6.4 mA while maintaining TTL voltage thresholds - confirmed across temperature and supply variations in the LM360N/NOPB datasheet.
LM360N/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- Type:
- Differential
- Number of Elements:
- 1
- Output Type:
- Complementary, TTL
- Voltage - Supply, Single/Dual (±):
- ±4.5V ~ 6.5V
- :
- 5mV
- Voltage - Input Offset (Max):
- 20µA
- Current - Input Bias (Max):
- 20mA
- Current - Output (Typ):
- 32mA
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- 130ns
- Propagation Delay (Max):
- -
- Hysteresis:
- 0°C ~ 70°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Through Hole
- :
- 8-PDIP
LM360N/NOPB FAQ
1.How can I place an order for LM360N/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM360N/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 LM360N/NOPB reliable?
The price and inventory of LM360N/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM360N/NOPB is usually 5 days.
3.What payment methods are accepted for LM360N/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM360N/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM360N/NOPB?
LM360N/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM360N/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 LM360N/NOPB?
For technical support, including LM360N/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM360N/NOPB requirements.
6.How does Aetrix verify that LM360N/NOPB is sourced from the original manufacturer or authorized distributors?
All LM360N/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 LM360N/NOPB meets industry standards.
7.What is the process for return or replacement of LM360N/NOPB?
All LM360N/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM360N/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 LM360N/NOPB part is unused and in its original packaging.
Return procedure for LM360N/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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