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Analog Devices Inc. LT1715HMS#PBF
- Part No.:
- LT1715HMS#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Comparators
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LT1715HMS#PBF.pdf
- Description:
- IC COMPARATOR 2 GEN PUR 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,702
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Product details
Overview
LT1715HMS#PBF from Analog Devices (formerly Linear Technology) is an ultrafast dual comparator with independent input and output supply rails, enabling flexible level translation between analog sensing domains and digital logic domains. It delivers 4ns propagation delay at 20mV overdrive, 150MHz toggle frequency, rail-to-rail TTL/CMOS-compatible outputs, and operates across –40°C to 125°C. It is used in high-speed crystal oscillator circuits, differential line receivers, and threshold discriminators requiring precise timing and wide temperature stability.
For engineers reviewing the LT1715HMS#PBF datasheet, LT1715HMS#PBF pinout, LT1715HMS#PBF application, or LT1715HMS#PBF equivalent, key selection considerations include its dual-channel propagation delay skew (<1.5ns), internal hysteresis (2–7mV), separate VCC/VEE and +VS/GND supplies, and MSOP-10 package optimized for high-speed layout with shielded inputs.
Technical Context
The LT1715HMS#PBF implements a PNP-input differential pair with internal hysteresis and symmetric rail-to-rail CMOS output drivers. Its input stage supports common-mode range from VEE – 0.1V to VCC – 1.2V, while the output stage operates independently on +VS (2.7–6V) and GND. This separation enables simultaneous operation with ±5V analog front-end and 3V logic back-end without performance degradation.
Propagation delay is specified at 2.8–4ns (20mV overdrive, –40°C to 125°C), with differential skew ≤1ns and rise/fall times of 2ns each. The device maintains stable trip points (±1.8mV max hysteresis variation) and low offset drift (10μV/°C) across temperature and supply voltage, making it suitable for precision timing-critical detection in harsh environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Propagation Delay | 4ns typical at 20mV overdrive, –40°C to 125°C - ensures sub-5ns timing resolution in sampling and clock recovery. |
| Toggle Frequency | 150MHz maximum - supports reliable detection of high-frequency signals such as 100MHz differential clocks. |
| Input Supply Range | VCC–VEE = 2.7V to 12V - allows ±5V, 3V single-ended, or asymmetric analog input configurations. |
| Output Supply Range | +VS = 2.7V to 6V - enables direct interfacing to 3V or 5V logic families without external level shifters. |
| Input Common-Mode Range | VEE – 0.1V to VCC – 1.2V - accommodates inputs below ground (e.g., –100mV) and near rail (e.g., 3.8V @ 5V VCC). |
| Internal Hysteresis | 2–7mV (typ/max) - suppresses chatter on slow-moving or noisy inputs without external components. |
| Operating Temperature | –40°C to +125°C - qualified for under-hood automotive, industrial control, and aerospace sensor interfaces. |
Pinout & Package
LT1715HMS#PBF is housed in a 10-pin MSOP (Mini Small Outline Package) with exposed pad for thermal enhancement. The pinout isolates sensitive inputs from outputs using power rails as shields, minimizing parasitic coupling in high-speed layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| +IN A (Pin 1) | Noninverting input of Comparator A | Accepts analog signal referenced to VEE/VCC; supports common-mode down to VEE – 0.1V. |
| –IN A (Pin 2) | Inverting input of Comparator A | Differential partner to Pin 1; internal hysteresis defined relative to trip points VTRIP+ and VTRIP–. |
| –IN B (Pin 3) | Inverting input of Comparator B | Independent channel input; pin placement avoids coupling with OUT A/OUT B. |
| +IN B (Pin 4) | Noninverting input of Comparator B | Enables dual-threshold or window detection when paired with Comparator A. |
| VEE (Pin 5) | Negative supply for input stage and substrate | Must be ≤ GND; sets lower bound of input common-mode range and enables negative rail operation. |
| GND (Pin 6) | Ground reference for output stage | Separate from VEE - critical for noise isolation; recommended to route separately from analog ground. |
| OUT B (Pin 7) | Output of Comparator B | Rail-to-rail CMOS output; drives 4mA source / 10mA sink into TTL/CMOS loads. |
| OUT A (Pin 8) | Output of Comparator A | Symmetric drive strength and timing to OUT B; skew <1.5ns ensures matched channel behavior. |
| +VS (Pin 9) | Positive supply for output stage | Independent of VCC; sets VOH/VOL levels and logic compatibility (e.g., +VS = 3V → 3V logic). |
| VCC (Pin 10) | Positive supply for input stage | Together with VEE defines input voltage range; may differ from +VS for level translation. |
Key Features
| Feature | Design Value |
|---|---|
| UltraFast 4ns propagation delay | Enables sub-5ns decision latency in high-speed sampling, delay lines, and clock edge detection. |
| Independent input/output supplies | Allows analog domain (±5V) and logic domain (3V) to coexist without level-shifting circuitry. |
| Internal hysteresis with spec limits | 2–7mV hysteresis prevents oscillation on slow/noisy inputs while maintaining guaranteed trip point stability. |
| Rail-to-rail CMOS output drive | VOH = +VS – 0.4V, VOL = 0.4V at load - ensures robust TTL/CMOS compatibility across supply voltages. |
| MSOP-10 pinout optimized for speed | Inputs placed opposite outputs, shielded by VCC/VEE rails - reduces crosstalk and layout-induced jitter. |
Applications
| High-Speed Differential Line Receiver | Level Translator |
|---|---|
Use Scenario: Receiving 100MHz differential clock/data signals (25mVP-P) over twisted-pair or coaxial traces in telecom or test equipment. IC Role / Device Role / Timing Role: Dual comparator acting as high-bandwidth, low-jitter line receiver with independent input biasing and output logic-level assignment. Use Value: 150MHz toggle capability and 4ns delay enable accurate recovery of fast serial timing without external amplification or equalization. |
Use Scenario: Translating a –5.2V to 0V analog threshold signal into a 0V/3V logic output for microcontroller GPIO input. IC Role / Device Role / Timing Role: Comparator performing rail-flexible voltage domain bridging between negative-referenced sensors and positive-supply logic. Use Value: Separate VEE/VCC and +VS/GND supplies eliminate need for discrete level-shifter ICs or resistor networks. |
| Crystal Oscillator Circuit | Threshold Discriminator |
Use Scenario: Sustaining oscillation in Pierce-type crystal oscillator designs where fast zero-crossing detection determines loop gain and phase margin. IC Role / Device Role / Timing Role: High-speed comparator providing low-phase-noise feedback path with minimal propagation delay uncertainty. Use Value: 2ns rise/fall times and <1ns inter-channel skew preserve oscillator spectral purity and startup reliability. |
Use Scenario: Detecting overvoltage/undervoltage conditions in DC power rails (e.g., 12V bus monitoring) with hysteresis to prevent chatter near trip points. IC Role / Device Role / Timing Role: Precision threshold detector with factory-trimmed offset and guaranteed hysteresis band across temperature. Use Value: Input offset voltage drift ≤10μV/°C and hysteresis stability ensure consistent trip accuracy over –40°C to 125°C. |
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 |
|---|---|---|---|
| LT1720IMS8#PBF | Single-supply only (2.7–6V), no separate VEE/+VS; 4.5ns delay, 100MHz toggle, 8-pin SO. | Lacks independent input/output supplies - unsuitable for level translation or bipolar input ranges. | Select when cost-sensitive, single-rail systems require comparable speed without supply flexibility. |
| MAX961ESA+ | 3.5ns delay, 250MHz toggle, but only 2.7–5.5V supply; no internal hysteresis; requires external hysteresis network. | Higher toggle rate but lacks built-in hysteresis and wide common-mode range - increases design complexity. | Select for highest-frequency applications where external hysteresis and layout control are acceptable. |
Compared with LT1720IMS8#PBF and MAX961ESA+, the LT1715HMS#PBF uniquely combines independent supply domains, guaranteed internal hysteresis, and –40°C to 125°C operation - making it the only choice for ruggedized level-translating comparators in automotive or industrial environments.
Availability
LT1715HMS#PBF is available at Aetrix Electronics and suitable for high-speed sampling circuits, crystal oscillator stabilization, and industrial threshold detection requiring stable component supply across extended temperature ranges.
Supply support for LT1715HMS#PBF 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
Analog Devices, Inc. (acquired Linear Technology in 2017) is a global leader in high-performance analog, mixed-signal, and RF technologies, serving industrial, automotive, communications, and healthcare markets.
The LT1715 belongs to Linear's UltraFast™ comparator family, designed specifically for applications demanding sub-5ns decision latency, supply-domain independence, and robust operation in thermally demanding environments.
FAQ
What is the maximum operating temperature for LT1715HMS#PBF?
The LT1715HMS#PBF is fully specified and tested over –40°C to +125°C, with guaranteed performance including propagation delay, hysteresis, and input offset voltage across this full range. This makes LT1715HMS#PBF suitable for under-hood automotive, motor control, and industrial environments where ambient temperatures exceed 85°C.
Can LT1715HMS#PBF operate with a single 3.3V supply?
Yes - LT1715HMS#PBF supports single-supply operation: tie VCC and +VS together at 3.3V, connect VEE and GND, and use the full input common-mode range from 0V to 2.1V. Propagation delay remains 4.8ns (typ) at 3.3V, and outputs swing rail-to-rail compatible with 3.3V logic families. This configuration is explicitly validated in the LT1715HMS#PBF datasheet.
Does LT1715HMS#PBF require external hysteresis for stable operation?
No - LT1715HMS#PBF includes factory-trimmed internal hysteresis (2–7mV, depending on grade and temperature), eliminating the need for external feedback resistors in most applications. This hysteresis is fully specified and guaranteed across –40°C to 125°C, ensuring chatter-free response even with slowly varying or noisy inputs - a key differentiator versus comparators like MAX961ESA+.
How does the separate VEE and GND pins function in LT1715HMS#PBF?
In LT1715HMS#PBF, VEE powers the input differential stage and sets the lower bound of the input common-mode range (down to VEE – 0.1V), while GND serves as the reference for the output stage. This separation allows true bipolar input operation (e.g., VEE = –5V, GND = 0V) alongside unipolar 3V logic outputs (+VS = 3V). The pins must not be shorted unless implementing a single-supply configuration.
What is the propagation delay skew between channels in LT1715HMS#PBF?
The LT1715HMS#PBF guarantees differential propagation delay skew (ΔtPD) of ≤1ns and propagation delay skew (tSKEW) of ≤1.5ns across –40°C to 125°C. These values are measured per channel under identical conditions (20mV overdrive, CLOAD = 10pF) and ensure matched timing behavior essential for window comparators, differential receivers, and synchronous sampling applications.
LT1715HMS#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Series:
- UltraFast™
- Packaging:
- Tube
- Product Status:
- Active
- Type:
- General Purpose
- Number of Elements:
- 2
- Output Type:
- CMOS, Rail-to-Rail, TTL
- Voltage - Supply, Single/Dual (±):
- 2.7V ~ 12V
- :
- 2.5mV @ ±5V
- Voltage - Input Offset (Max):
- 7µA @ ±5V
- Current - Input Bias (Max):
- 20mA
- Current - Output (Typ):
- 2.2mA
- Current - Quiescent (Max):
- 55dB CMRR, 80dB PSRR
- CMRR, PSRR (Typ):
- 9ns
- Propagation Delay (Max):
- 7mV
- Hysteresis:
- -40°C ~ 125°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 10-MSOP
LT1715HMS#PBF FAQ
1.How can I place an order for LT1715HMS#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1715HMS#PBF 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 LT1715HMS#PBF reliable?
The price and inventory of LT1715HMS#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1715HMS#PBF is usually 5 days.
3.What payment methods are accepted for LT1715HMS#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1715HMS#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1715HMS#PBF?
LT1715HMS#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1715HMS#PBF 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 LT1715HMS#PBF?
For technical support, including LT1715HMS#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1715HMS#PBF requirements.
6.How does Aetrix verify that LT1715HMS#PBF is sourced from the original manufacturer or authorized distributors?
All LT1715HMS#PBF 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 LT1715HMS#PBF meets industry standards.
7.What is the process for return or replacement of LT1715HMS#PBF?
All LT1715HMS#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1715HMS#PBF, 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 LT1715HMS#PBF part is unused and in its original packaging.
Return procedure for LT1715HMS#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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