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Texas Instruments LMH7220MK/NOPB
- Part No.:
- LMH7220MK/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
LMH7220MK/NOPB.pdf
- Description:
- IC COMPARATOR 1 GEN PUR SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:1,327
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Product details
Overview
LMH7220MK/NOPB from Texas Instruments is a high-speed comparator with LVDS differential output, operating from 2.7V to 12V supply, delivering 2.9 ns propagation delay, 0.6 ns rise/fall times, and 325 mV differential swing into 100Ω, used in oscilloscope triggering and fast line reception.
For engineers reviewing the LMH7220MK/NOPB datasheet, LMH7220MK/NOPB pinout, LMH7220MK/NOPB application, or LMH7220MK/NOPB equivalent, this page provides verified functional identity, validated 6-pin SOT package mapping, confirmed LVDS output compliance, temperature-stable offset performance (±9.5 mV), and real-world timing behavior across 2.7V–12V operation.
Technical Context
The LMH7220MK/NOPB implements a current-mode LVDS output stage with internal 1.2 V common-mode reference and dual 3.25 mA current sources, enabling standardized 325 mV differential swing across 100Ω loads independent of supply voltage. Its input stage supports common-mode range down to −0.2 V (200 mV below ground) on single-supply operation.
Propagation delay dispersion is characterized at ≤0.86 ns over 20–100 mV overdrive and ≤0.46 ns over 100 mV–1 V, with Q-to-Q skew <0.09 ns at 100 mV overdrive and 2 pF load - confirming tight channel matching for high-speed differential signaling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Propagation Delay | 2.9 ns @ 100 mV overdrive (5V supply); enables sub-350 MHz toggle-rate timing-critical decisions |
| Rise/Fall Time | 0.6 ns (20%–80%, 100 mV overdrive); supports clean edge integrity up to ~800 MHz fundamental |
| LVDS Output Swing | 325 mV differential into 100Ω; compliant with ANSI/TIA/EIA-644 standard for noise-immune interconnect |
| Supply Range | 2.7V to 12V; allows direct integration with 3.3V, 5V, and 12V analog/digital subsystems without level-shifting |
| Input Voltage Range | −0.2 V to VCC−2 V; supports ground-referenced sensing and rail-to-rail input compatibility |
| Operating Temperature | −40°C to +125°C; qualified for automotive under-hood and industrial control environments |
| Supply Current | 6.8 mA @ 5V (load excluded); delivers high speed at <34 mW quiescent power |
Pinout & Package
LMH7220MK/NOPB is housed in a 6-pin SOT-23 package (SC-70), optimized for space-constrained PCB layouts while maintaining thermal resistance of 189°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN−) | Inverting Input | Differential input node with ESD protection and 1.5 kΩ series resistor to base of input transistor |
| 2 (GND) | Ground Reference | Return path for input stage and LVDS output common-mode loop; referenced by internal 1.2 V VREF |
| 3 (IN+) | Non-inverting Input | Differential input node with identical ESD and bias structure as IN− |
| 4 (VCC) | Positive Supply | Power rail for input stage and top current source; supports 2.7V–12V operation |
| 5 (OUT Q) | LVDS True Output | Current-source-driven output; sinks 3.25 mA when low, sources 3.25 mA when high |
| 6 (OUT Q̅) | LVDS Complement Output | Complementary current-source-driven output; phase-inverted relative to OUT Q |
Key Features
| Feature | Design Value |
|---|---|
| LVDS-compliant output stage | Internally regulated 1.2 V common-mode voltage and matched 3.25 mA current sources ensure ANSI/TIA/EIA-644 compliance without external biasing |
| Extended input common-mode range | Operates down to −0.2 V (200 mV below GND), enabling true ground-sensing in single-supply systems |
| Low propagation delay dispersion | ≤0.86 ns overdrive dispersion ensures consistent timing across varying signal amplitudes in pulse-height/width analyzers |
| High CMRR & PSRR | 70 dB CMRR and 74 dB PSRR minimize sensitivity to supply noise and common-mode interference in noisy mixed-signal environments |
| Thermal stability | Input offset drift ±50 µV/°C and output offset variation <10 mV over −40°C to +125°C support reliable threshold detection across temperature |
Applications
| Oscilloscope Triggering | Fast Differential Line Receiver |
|---|---|
Use Scenario: Detecting precise zero-crossing or amplitude thresholds in high-bandwidth analog front-ends to initiate acquisition sweeps. IC Role / Device Role / Timing Role: High-speed comparator generating synchronized LVDS trigger pulses with sub-3 ns latency and minimal jitter. Use Value: Enables real-time waveform capture at >300 MHz sampling rates by eliminating trigger delay uncertainty and skew between channels. |
Use Scenario: Receiving high-speed differential data streams from LVDS transmitters over controlled-impedance PCB traces or cables. IC Role / Device Role / Timing Role: LVDS receiver converting differential signals to logic-level outputs with deterministic propagation delay and low inter-pair skew. Use Value: Supports >860 Mb/s data throughput with RMS jitter <4.44 ps, preserving signal integrity in instrumentation and test equipment backplanes. |
| Pulse Height Analyzer | Remote Threshold Detection |
Use Scenario: Discriminating particle energy levels in radiation detection systems via analog pulse amplitude comparison against programmable references. IC Role / Device Role / Timing Role: Precision comparator with stable input offset (<±9.5 mV) and wide common-mode range for accurate peak amplitude windowing. Use Value: Delivers consistent pulse classification across temperature and supply variations, reducing false counts in spectroscopy applications. |
Use Scenario: Monitoring remote sensor outputs (e.g., thermocouples, strain gauges) where long traces introduce noise and ground shifts. IC Role / Device Role / Timing Role: Ground-sensing comparator accepting inputs down to −0.2 V, rejecting common-mode noise via differential LVDS output. Use Value: Eliminates need for isolated amplifiers or level shifters in distributed industrial monitoring, lowering BOM cost and layout complexity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADCMP572BCPZ-R7 | PECL output (not LVDS); 2.5 ns propagation delay; requires negative supply for full common-mode range | Better suited for ECL-terminated systems; lacks ground-sensing capability below GND | Select when interfacing to legacy PECL logic or ultra-low-jitter clock distribution, not LVDS buses |
| TLV3501AIDBVR | CMOS output; 4.5 ns delay; 2.7–5.5 V supply only; no differential output | Requires external LVDS driver; limited to lower-speed applications (<200 Mbps) | Choose for cost-sensitive, non-LVDS designs where board space permits discrete driver implementation |
Compared with ADCMP572BCPZ-R7 and TLV3501AIDBVR, LMH7220MK/NOPB uniquely combines true LVDS compliance, ground-sensing input, and sub-3 ns delay in a 6-pin SOT - making it the only drop-in solution for space-constrained, high-speed differential receiver nodes requiring ANSI/TIA/EIA-644 interoperability.
Availability
LMH7220MK/NOPB is available at Aetrix Electronics and suitable for oscilloscope triggering, fast differential line reception, and pulse height analysis requiring stable component supply across extended temperature ranges and multi-voltage platforms.
Supply support for LMH7220MK/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 high-performance signal chain solutions, with decades of expertise in precision comparators and interface ICs.
The LMH7220MK/NOPB belongs to TI's high-speed comparator product line, engineered specifically for applications demanding LVDS-compatible outputs, nanosecond timing accuracy, and robust operation across industrial and test equipment environments.
FAQ
What is the guaranteed propagation delay specification for LMH7220MK/NOPB across its full operating temperature range?
The LMH7220MK/NOPB guarantees propagation delay ≤3.8 ns over −40°C to +125°C at 100 mV overdrive and 5V supply, per TI SNOSAL3E Rev. May 2013 datasheet Figure 14. This includes worst-case variation due to temperature, ensuring timing predictability in automotive and industrial control systems where LMH7220MK/NOPB serves as a critical decision element.
Does LMH7220MK/NOPB require external termination resistors for LVDS output compliance?
Yes - LMH7220MK/NOPB requires an external 100Ω differential termination resistor placed at the receiver end of the transmission line. The device's current-mode LVDS outputs deliver 3.25 mA per leg, producing the standard 325 mV differential swing across that 100Ω load. No internal termination is provided; correct external termination is mandatory for signal integrity and ANSI/TIA/EIA-644 compliance.
Can LMH7220MK/NOPB operate with a 3.3V supply while maintaining full AC performance specifications?
Yes - LMH7220MK/NOPB is fully specified at 3.3V (within its 2.7V–12V range). At 3.3V, typical propagation delay is 3.0 ns and toggle rate reaches 750 Mb/s (SNOSAL3E, Table +3.3V AC Characteristics). Input common-mode range remains −0.2 V to 1.3 V, and LVDS output swing stays compliant at 325 mV differential, confirming full functionality in modern 3.3V digital systems.
How does the input stage of LMH7220MK/NOPB handle overvoltage conditions beyond its absolute maximum ratings?
The LMH7220MK/NOPB input pins include ESD diodes clamping to VCC and GND, plus anti-parallel base-emitter protection diodes across the differential pair. Exceeding ±13V differential input or applying >VCC+0.2V to any pin risks forward-biasing these diodes, causing elevated input current (>±5 µA) and potential damage. TI recommends external clamping or limiting resistors if overvoltage transients are expected in the application using LMH7220MK/NOPB.
Is LMH7220MK/NOPB pin-compatible with other members of the LMH72xx family, such as LMH7221?
No - LMH7220MK/NOPB (6-pin SOT-23) is not pin-compatible with LMH7221 (8-pin SOIC), which adds enable and latch functions. Pin count, layout, and terminal assignments differ fundamentally. LMH7220MK/NOPB has dedicated IN+, IN−, VCC, GND, OUT Q, and OUT Q̅ pins; LMH7221 introduces EN and LATCH pins, altering both footprint and signal routing. Migration requires PCB redesign and firmware adaptation for LMH7221's additional features.
LMH7220MK/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- SOT-23-6 Thin, TSOT-23-6
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- General Purpose
- Number of Elements:
- 1
- Output Type:
- Complementary, Differential, LVDS
- Voltage - Supply, Single/Dual (±):
- 2.7V ~ 12V, ±1.35V ~ 6V
- :
- 9.5mV @ 5V
- Voltage - Input Offset (Max):
- 0.5µA @ 5V
- Current - Input Bias (Max):
- -
- Current - Output (Typ):
- 6.8mA
- Current - Quiescent (Max):
- 70dB CMRR, 74dB PSRR
- CMRR, PSRR (Typ):
- 7ns
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 85°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- SOT-23-THIN
LMH7220MK/NOPB FAQ
1.How can I place an order for LMH7220MK/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMH7220MK/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 LMH7220MK/NOPB reliable?
The price and inventory of LMH7220MK/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMH7220MK/NOPB is usually 5 days.
3.What payment methods are accepted for LMH7220MK/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMH7220MK/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMH7220MK/NOPB?
LMH7220MK/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMH7220MK/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 LMH7220MK/NOPB?
For technical support, including LMH7220MK/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMH7220MK/NOPB requirements.
6.How does Aetrix verify that LMH7220MK/NOPB is sourced from the original manufacturer or authorized distributors?
All LMH7220MK/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 LMH7220MK/NOPB meets industry standards.
7.What is the process for return or replacement of LMH7220MK/NOPB?
All LMH7220MK/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMH7220MK/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 LMH7220MK/NOPB part is unused and in its original packaging.
Return procedure for LMH7220MK/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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