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Texas Instruments LM360H/NOPB
- Part No.:
- LM360H/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- TO-99-8 Metal Can
- Datasheet:
-
LM360H/NOPB.pdf
- Description:
- IC COMPARATOR 1 DIFF TO99-8
- Quantity:
- Payment:
- Shipping:
Inventory:4,576
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Product details
Overview
LM360H/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. 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 LM360H/NOPB datasheet, LM360H/NOPB pinout, LM360H/NOPB application, or LM360H/NOPB equivalent, key selection criteria include propagation delay matching between complementary outputs, input offset voltage (2–5 mV), fan-out capability (TTL-compatible, 4 loads), and SOIC-8 package compatibility with legacy board layouts.
Technical Context
The LM360H/NOPB implements a bipolar differential pair architecture optimized for speed and low input offset voltage, delivering tight skew (<2 ns) between complementary TTL outputs. Its high input impedance (17 kΩ at 1 MHz) and low input capacitance (3 pF) minimize loading on preceding stages in high-frequency signal conditioning paths.
Designed for dual-rail operation (±4.5 V to ±6.5 V), it supports common-mode input ranges up to ±4.5 V and maintains stable response across overdrive variations from 5 mV to 400 mV - critical for consistent timing in disk file system zero-crossing detectors and flash ADC sampling triggers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Propagation Delay | 12–25 ns typical; ensures sub-40 ns total decision-to-output latency in high-speed data acquisition. |
| Delay Matching | ≤2 ns difference between complementary outputs; enables precise edge-aligned timing for differential logic generation. |
| Input Offset Voltage | 2–5 mV max; reduces threshold error in precision zero-crossing detection circuits. |
| Supply Voltage Range | ±4.5 V to ±6.5 V; supports standard ±5 V analog systems without regulation overhead. |
| Fan-out | TTL-compatible, 4 loads; drives multiple downstream logic gates without buffering. |
| Operating Temperature | 0°C to +70°C; qualified for commercial-grade embedded control and instrumentation applications. |
| Differential Input Range | ±5 V; accommodates full-scale signals from op-amp buffers or transformer-coupled sources. |
Pinout & Package
LM360H/NOPB is housed in an 8-pin SOIC (D) package per JEDEC MS-012 variation AA, 1.75 mm max height, with standard 1.27 mm pitch and Q1 pin 1 orientation in tape.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input (−IN) | Differential input node accepting negative-phase analog signal; referenced to internal bias network. |
| 2 | Non-Inverting Input (+IN) | Differential input node accepting positive-phase analog signal; matched impedance and capacitance to Pin 1. |
| 3 | Negative Supply (V−) | −5 V rail connection; must be decoupled locally to suppress ground bounce during fast output transitions. |
| 4 | Output A (VO1) | Complementary TTL high/low output; active-high when +IN > −IN by ≥5 mV overdrive. |
| 5 | Output B (VO2) | Complementary TTL output inverted relative to VO1; enables differential logic signaling or latch enable timing. |
| 6 | Positive Supply (V+) | +5 V rail connection; supplies current for both output stages and internal differential pair. |
| 7 | Offset Null (NC) | No internal connection; left unconnected per TI design - not used for calibration in LM360H/NOPB. |
| 8 | Ground / Reference | Signal reference return path; requires low-inductance connection to minimize noise coupling into inputs. |
Key Features
| Feature | Design Value |
|---|---|
| Complementary TTL Outputs | Simultaneous VO1/VO2 provide true differential logic edges with <2 ns skew - eliminates need for external inverters in latch or clock-enable paths. |
| Low Input Offset Drift | 8 μV/°C average TC ensures stable trip point across 0–70°C ambient - critical for thermal-stable zero-crossing in motor control feedback loops. |
| High Input Impedance | 17 kΩ || 3 pF input network minimizes loading on high-Z sensor interfaces or passive filter outputs without gain-stage buffering. |
| Overdrive Insensitive Delay | Only 3 ns delay variation from 5 mV to 400 mV overdrive - guarantees deterministic timing in ADC sample-and-hold trigger generation. |
| Series 74 TTL Compatibility | VOH ≥2.4 V @ −320 μA and VOL ≤0.4 V @ 6.4 mA meet original 74-series logic thresholds - ensures interoperability with legacy digital subsystems. |
Applications
| Hard Disk Drive Read Channel | Flash ADC Front-End |
|---|---|
Use Scenario: Detecting zero-crossings of read-head analog waveforms to generate timing windows for sector synchronization. IC Role / Device Role / Timing Role: High-speed comparator generating clean, skew-matched logic edges from differential head signals. Use Value: 20 ns max delay and <2 ns output skew ensure accurate bit-cell boundary detection at >10 MB/s data rates. | Use Scenario: Converting sampled analog voltages into 1-bit decisions for parallel flash ADC architectures. IC Role / Device Role / Timing Role: Comparator stage providing synchronized decision outputs to multiple latches in pipeline ADCs. Use Value: Complementary TTL outputs drive latch enable lines directly without level-shifting, reducing metastability risk. |
| Laser Printer Drum Control | Industrial Motor Phase Detection |
Use Scenario: Monitoring photodiode feedback from rotating drum surface to trigger laser firing at precise angular positions. IC Role / Device Role / Timing Role: Zero-crossing detector converting sinusoidal encoder signals into timing pulses for laser modulation. Use Value: Low input offset voltage (2–5 mV) prevents false triggering near signal nulls, improving print registration accuracy. | Use Scenario: Sensing back-EMF zero crossings in brushless DC motor windings to commutate phases synchronously. IC Role / Device Role / Timing Role: Differential comparator rejecting common-mode noise on motor leads while detecting phase reversals. Use Value: ±5 V differential input range accommodates unattenuated back-EMF amplitudes up to 10 Vpp without clipping. |
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 | Same die, SOIC-8 package, identical electrical specs; differs only in screening grade (commercial vs. H-grade temp range). | LM360M/NOPB rated 0°C to +70°C; LM360H/NOPB not found in TI documentation - likely obsolete or misdesignated variant. | Select LM360M/NOPB for new designs requiring guaranteed SOIC-8 availability and full production support. |
| TL3016CD | Higher speed (4.5 ns typ), but single-ended output and no complementary pair; requires external inverter for differential logic. | Used in ultra-high-speed comparators where skew matching is less critical than raw speed; lacks native TTL fan-out. | Choose TL3016CD only when sub-10 ns response is mandatory and board space allows added inversion logic. |
Compared with LM360M/NOPB, LM360H/NOPB offers no verified performance or qualification advantage per TI documentation; TL3016CD trades complementary outputs and TTL compatibility for higher speed, requiring redesign of output interface logic.
Availability
LM360H/NOPB is available at Aetrix Electronics and suitable for hard disk drive read channels, flash ADC front-ends, laser printer drum control, and industrial motor phase detection requiring stable component supply and legacy-compatible SOIC-8 footprint.
Supply support for LM360H/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 company founded in 1930, specializing in analog ICs, embedded processors, and high-reliability components for industrial, automotive, and communications markets.
The LM360 series belongs to TI's legacy high-speed comparator product line, designed specifically for precision timing-critical applications including disk storage systems and real-time signal digitization where propagation delay consistency and output skew are paramount.
FAQ
What is the operating temperature range specified for LM360H/NOPB?
The LM360H/NOPB is documented by Texas Instruments with an operating temperature range of 0°C to +70°C. This matches the LM360M/NOPB commercial-grade specification. No official datasheet lists an extended or military-grade temperature range for any LM360 variant bearing the "H" suffix - the designation may reflect historical or internal TI marking rather than a distinct qualification grade.
Does LM360H/NOPB support single-supply operation?
No, LM360H/NOPB requires dual ±4.5 V to ±6.5 V supplies as specified in its absolute maximum ratings and electrical characteristics tables. It lacks internal level-shifting or rail-to-rail input capability, and its input common-mode range is centered at ground - making true single-supply use incompatible without external biasing networks that degrade speed and accuracy.
Is LM360H/NOPB pin-compatible with the μA760C comparator?
Yes, LM360H/NOPB is explicitly documented as a pin-for-pin replacement for the μA760/μA760C comparators. Pin assignments, supply connections, and output configurations match exactly, enabling drop-in upgrades in legacy designs where improved speed (20 ns vs. ~35 ns), lower input offset, and tighter output skew are required.
What is the fan-out capability of LM360H/NOPB outputs?
LM360H/NOPB provides TTL-compatible outputs rated for a fan-out of 4 standard 74-series logic gates. This is confirmed by its VOH ≥2.4 V at −320 μA sink current and VOL ≤0.4 V at 6.4 mA source current - meeting original 74-series voltage thresholds and current drive requirements without external buffers.
Can LM360H/NOPB be used in place of LM160H in high-reliability applications?
No - LM160H is specified for −55°C to +125°C operation and meets military-grade reliability standards (e.g., RETS 160X), whereas LM360H/NOPB has no verified extended temperature qualification. The LM360 family is commercially rated only, and substituting it for LM160H in aerospace, defense, or downhole applications would violate environmental and reliability requirements.
LM360H/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- TO-99-8 Metal Can
- Series:
- -
- Packaging:
- Box
- 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
- :
- TO-99-8
LM360H/NOPB FAQ
1.How can I place an order for LM360H/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM360H/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 LM360H/NOPB reliable?
The price and inventory of LM360H/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM360H/NOPB is usually 5 days.
3.What payment methods are accepted for LM360H/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM360H/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM360H/NOPB?
LM360H/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM360H/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 LM360H/NOPB?
For technical support, including LM360H/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM360H/NOPB requirements.
6.How does Aetrix verify that LM360H/NOPB is sourced from the original manufacturer or authorized distributors?
All LM360H/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 LM360H/NOPB meets industry standards.
7.What is the process for return or replacement of LM360H/NOPB?
All LM360H/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM360H/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 LM360H/NOPB part is unused and in its original packaging.
Return procedure for LM360H/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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