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Texas Instruments LM360MX
- Part No.:
- LM360MX
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LM360MX.pdf
- Description:
- IC COMPARATOR 1 DIFF 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,589
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Product details
Overview
LM360MX 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 disk file system zero-crossing detectors and high-speed analog-to-digital converter front-ends.
For engineers reviewing the LM360MX datasheet, LM360MX pinout, LM360MX application, or LM360MX equivalent, key selection criteria include propagation delay matching between complementary outputs, input offset voltage (2–5 mV), fan-out capability (4 TTL loads), and SOIC-8 package compatibility with legacy board layouts.
Technical Context
The LM360MX implements a bipolar differential pair input stage optimized for speed and low input offset voltage, delivering tight delay matching (<2 ns skew between complementary outputs) and stable response across 5 mV–400 mV overdrive ranges. Its architecture supports TTL-level output switching without external pull-ups.
Designed for single-supply or split-supply operation (±4.5 V to ±6.5 V), it features high input impedance (17 kΩ at 1 MHz), low input capacitance (3 pF), and common-mode input range of ±4.5 V - enabling direct interfacing with precision analog signal paths in data acquisition systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Propagation Delay | 12–25 ns typical; enables sampling rates up to ~40 MHz in ADC trigger applications. |
| Delay Matching (Skew) | ≤2 ns difference between complementary outputs; ensures precise timing alignment in differential logic interfaces. |
| Input Offset Voltage | 2–5 mV max; supports accurate threshold detection with sub-10 mV resolution in zero-crossing circuits. |
| Supply Voltage Range | ±4.5 V to ±6.5 V; compatible with standard ±5 V analog power rails and industrial logic supplies. |
| Output Drive | TTL-compatible: VOH ≥2.4 V @ −320 µA, VOL ≤0.4 V @ 6.4 mA; directly drives 74-series logic without buffering. |
| Operating Temperature | 0°C to +70°C; qualified for commercial-grade embedded control and peripheral interface applications. |
| Package | SOIC-8 (D0008A); 150 mil width, 1.75 mm max height; industry-standard footprint for automated assembly. |
Pinout & Package
LM360MX is housed in an 8-pin SOIC (Small Outline Integrated Circuit) package per JEDEC MS-012 variation AA, designated D0008A. The package has 150 mil body width, 1.27 mm lead pitch, and gull-wing leads suitable for reflow soldering per IPC-7351 land patterns.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input (−IN) | Differential input node; accepts analog signals referenced to common-mode range ±4.5 V. |
| 2 | Non-Inverting Input (+IN) | Differential input node; paired with Pin 1 for high-speed comparator decision logic. |
| 3 | Negative Supply (V−) | Connects to −5 V rail; establishes lower reference for internal biasing and output swing. |
| 4 | Output A (Q) | Complementary TTL output; active-high when +IN > −IN by >5 mV overdrive. |
| 5 | Output B (Q̄) | Complementary TTL output; inverted logic state of Pin 4; enables differential signaling without external inverters. |
| 6 | Positive Supply (V+) | Connects to +5 V rail; powers internal differential pair and output stage. |
| 7 | Ground / Reference | Not used; no internal ground connection - device operates fully on dual supplies only. |
| 8 | Offset Null (NC) | No internal connection; left unconnected per TI design - not functional for trimming. |
Key Features
| Feature | Design Value |
|---|---|
| Complementary TTL outputs | Simultaneous Q and Q̄ outputs eliminate need for external inverters in latch or flip-flop clocking paths. |
| Tight delay matching | ≤2 ns skew between outputs ensures <1 LSB timing error in 500 MHz-equivalent sampling windows. |
| Low input offset drift | 8 µV/°C tempco maintains <10 mV threshold stability across full 0°C–70°C operating range. |
| High input impedance | 17 kΩ || 3 pF minimizes loading on high-impedance sensor or filter outputs in signal conditioning stages. |
| Robust overdrive response | Delay variation ≤3 ns across 5–400 mV overdrive enables consistent timing in variable-slew-rate applications. |
Applications
| Disk File Zero-Crossing Detection | High-Speed ADC Triggering |
|---|---|
|
Use Scenario: Detecting magnetic head read signal polarity transitions in hard disk drive servo systems. IC Role / Device Role / Timing Role: Differential comparator generating clean TTL edges synchronized to analog waveform zero crossings. Use Value: 20 ns max delay and <2 ns output skew ensure accurate sector timing and reduce servo loop jitter below 100 ps RMS. |
Use Scenario: Converting analog sample pulses into synchronous digital strobes for flash or pipeline ADCs. IC Role / Device Role / Timing Role: High-speed threshold detector providing precisely timed conversion start pulses with matched rising/falling edges. Use Value: Complementary outputs enable dual-edge sampling or differential clock distribution without added gate delay. |
| Precision Level Shifting | Analog Signal Edge Detection |
|
Use Scenario: Translating ±2.5 V sensor outputs to 0–5 V TTL logic levels for microcontroller input capture units. IC Role / Device Role / Timing Role: Rail-to-rail capable comparator acting as bidirectional level translator with defined hysteresis margin. Use Value: ±4.5 V common-mode range accepts wide-swing analog inputs while maintaining TTL output compatibility. |
Use Scenario: Extracting fast transient edges from noisy industrial sensor waveforms (e.g., vibration, current spikes). IC Role / Device Role / Timing Role: High-slew-rate comparator detecting sub-10 ns edge transitions with minimal propagation uncertainty. Use Value: 12 ns typical response time and low input capacitance (3 pF) preserve signal integrity in high-frequency edge detection. |
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 SOIC-8 package, identical electrical specs, but supplied in tube (95 pcs) vs. tape-and-reel (2500 pcs); no functional difference. | Preferred for prototyping or low-volume builds where reel handling is impractical. | Select LM360M/NOPB for lab evaluation or small-batch assembly; LM360MX/NOPB.B offers optimized logistics for production runs. |
| TL3016CD | Higher speed (4.5 ns typ), wider supply range (±15 V), but single-ended output and no complementary pair; requires external inverter. | Suitable for ultra-high-speed single-threshold detection, not for differential logic generation or zero-crossing symmetry. | Choose TL3016CD only when propagation delay <5 ns is mandatory and complementary outputs are unnecessary. |
Compared with LM360M/NOPB, LM360MX/NOPB.B provides identical performance in a tape-and-reel format optimized for SMT line efficiency; versus TL3016CD, LM360MX delivers matched complementary outputs at lower cost and simpler layout, trading raw speed for functional completeness in timing-critical differential systems.
Availability
LM360MX is available at Aetrix Electronics and suitable for disk file servo control, high-speed data acquisition triggering, and industrial analog edge detection requiring stable component supply across extended production cycles.
Supply support for LM360MX 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 over 90 years of innovation in precision analog ICs.
The LM360MX belongs to TI's legacy high-speed comparator product line, engineered specifically for applications demanding sub-25 ns propagation delay, matched complementary outputs, and robust operation in commercial-grade data storage and instrumentation systems.
FAQ
What is the operating temperature range for LM360MX?
The LM360MX is rated for 0°C to +70°C operation, making it suitable for commercial-grade embedded systems, disk drive controllers, and industrial data acquisition modules where ambient conditions remain within this envelope. This range is explicitly defined in the Absolute Maximum Ratings table of the SNOSBJ4C datasheet and distinguishes LM360MX from the military-grade LM160 variant, which operates from −55°C to +125°C. LM360MX maintains full specification compliance across its entire rated temperature span.
Does LM360MX require external pull-up resistors on its outputs?
No, LM360MX does not require external pull-up resistors because its outputs are fully buffered TTL-compatible drivers capable of sourcing −320 µA and sinking 6.4 mA while meeting VOH ≥2.4 V and VOL ≤0.4 V specifications. The internal output stage is designed to directly interface with 74-series logic without additional components. This eliminates board space, reduces BOM count, and avoids timing uncertainty introduced by external RC networks - a key advantage confirmed in the Electrical Characteristics table under "Output High/Low Voltage" conditions.
Is LM360MX pin-compatible with μA760C?
Yes, LM360MX is explicitly documented as a pin-for-pin replacement for μA760/μA760C in the device description and Connection Diagrams section of the SNOSBJ4C datasheet. Both devices use the same SOIC-8 (D0008A) package with identical pin assignments: Pin 1 (−IN), Pin 2 (+IN), Pin 3 (V−), Pin 4 (Q), Pin 5 (Q̄), Pin 6 (V+), Pin 7 (NC), and Pin 8 (Offset Null/NC). No PCB layout changes are required when upgrading from μA760C to LM360MX.
What is the function of Pin 8 (Offset Null) on LM360MX?
Pin 8 on LM360MX is labeled "Offset Null" in the schematic diagram but is internally unconnected (NC) - it serves no functional purpose and must be left floating or tied to ground only for mechanical stability. TI confirms this in the Package Outline drawing notes and Electrical Characteristics table, where no offset null adjustment circuitry is specified. Unlike earlier comparators such as LM311, LM360MX achieves its 2–5 mV input offset voltage through process optimization, eliminating the need for external trimming.
Can LM360MX operate from a single +5 V supply?
No, LM360MX requires dual supplies (e.g., +5 V and −5 V) and cannot operate from a single +5 V rail. Its absolute maximum ratings specify separate positive and negative supply pins (V+ and V−), and the Electrical Characteristics table defines operating conditions only for symmetric ±4.5 V to ±6.5 V supplies. Attempting single-supply operation violates the "Input Voltage: V+ ≥ VIN ≥ V−" condition and risks latch-up or undefined output behavior. For single-supply applications, consider TI's TLV3501 or similar rail-to-rail comparators.
LM360MX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- 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:
- Surface Mount
- :
- 8-SOIC
LM360MX FAQ
1.How can I place an order for LM360MX through Aetrix?
Please submit a Request for Quotation (RFQ) for LM360MX 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 LM360MX reliable?
The price and inventory of LM360MX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM360MX is usually 5 days.
3.What payment methods are accepted for LM360MX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM360MX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM360MX?
LM360MX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM360MX 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 LM360MX?
For technical support, including LM360MX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM360MX requirements.
6.How does Aetrix verify that LM360MX is sourced from the original manufacturer or authorized distributors?
All LM360MX 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 LM360MX meets industry standards.
7.What is the process for return or replacement of LM360MX?
All LM360MX units undergo pre-shipment inspection (PSI). If there is an issue with LM360MX, 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 LM360MX part is unused and in its original packaging.
Return procedure for LM360MX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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