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Analog Devices Inc. LT1715CMS#PBF
- Part No.:
- LT1715CMS#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Comparators
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LT1715CMS#PBF.pdf
- Description:
- IC COMPARATOR 2 GEN PUR 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:5,299
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Product details
Overview
LT1715CMS#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 TTL/CMOS logic domains. It delivers 4ns propagation delay at 20mV overdrive, 150MHz toggle frequency, rail-to-rail outputs, and internal 4mV hysteresis - deployed in high-speed sampling circuits, crystal oscillator interfaces, and differential line receivers.
For engineers reviewing the LT1715CMS#PBF datasheet, LT1715CMS#PBF pinout, LT1715CMS#PBF application, or LT1715CMS#PBF equivalent, key selection criteria include dual-channel propagation delay skew (<1.5ns), separate VCC/VEE and +VS/GND supply domains, input common-mode range extending 100mV below VEE, and guaranteed operation from 0°C to 70°C in the MSOP-10 package.
Technical Context
The LT1715CMS#PBF implements a PNP-input differential pair with internal hysteresis and symmetric rail-to-rail CMOS output drivers. Its dual independent supply architecture isolates input stage biasing (VCC–VEE) from output logic level setting (+VS–GND), allowing simultaneous operation with ±5V analog inputs and 3V digital outputs.
Propagation delay is stabilized across temperature and supply voltage via matched internal current sources and low-capacitance layout; differential delay skew (ΔtPD) remains ≤1ns, and channel interaction-induced jitter is minimized by shielded pin placement and power rail isolation between input and output terminals.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Propagation Delay | 4ns typical at 20mV overdrive - enables sub-5ns timing-critical decisions in high-speed sampling and clock recovery. |
| Toggle Frequency | 150MHz maximum - supports clean 100MHz differential clock reception with <5ns edge uncertainty. |
| Input Common-Mode Range | VEE – 0.1V to VCC – 1.2V - permits direct interfacing to negative-rail sensors or single-supply op-amp outputs without level-shifting. |
| Supply Voltage Ranges | VCC–VEE: 2.7V–12V; +VS–GND: 2.7V–6V - allows mixed-voltage system integration (e.g., ±5V input, 3.3V output). |
| Internal Hysteresis | 2mV (min) to 7mV (max) - prevents chatter on slow-moving signals while maintaining precise trip-point control. |
| Output Drive | Rail-to-rail, 4mA source / 10mA sink - directly drives TTL/CMOS loads and 50Ω transmission lines without external buffers. |
| Operating Temperature | 0°C to 70°C (commercial grade) - validated for industrial control I/O modules and test equipment front ends. |
Pinout & Package
The LT1715CMS#PBF is housed in a 10-pin MSOP package (3mm × 3mm, 0.5mm pitch), optimized for high-speed layout with input pins physically isolated from outputs by power rails (VEE, VCC, +VS, GND) to minimize coupling.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| +IN A (Pin 1) | Noninverting input of Comparator A | Accepts analog signal up to VCC – 1.2V; biased by PNP input stage requiring VEE reference. |
| –IN A (Pin 2) | Inverting input of Comparator A | Paired with +IN A; differential input capacitance is 2pF typical - requires low-impedance drive for <5ns response. |
| –IN B (Pin 3) | Inverting input of Comparator B | Electrically identical to –IN A; pin placement shields both inputs from OUT A/OUT B via adjacent power rails. |
| +IN B (Pin 4) | Noninverting input of Comparator B | Enables independent threshold detection on second channel; shares same input stage architecture as Channel A. |
| VEE (Pin 5) | Negative supply for input stage and substrate | Sets lower bound of input common-mode range; must be ≤ GND and ≥ –13.2V; ties to analog ground or negative rail. |
| GND (Pin 6) | Ground reference for output stage | Return path for +VS-driven outputs; separation from VEE reduces ground bounce coupling into sensitive inputs. |
| OUT B (Pin 7) | Output of Comparator B | Rail-to-rail CMOS output; rise/fall times ≤2ns into 10pF - requires short trace routing and local decoupling. |
| OUT A (Pin 8) | Output of Comparator A | Matched to OUT B in timing and drive strength; differential skew <1ns ensures synchronous dual-channel decision timing. |
| +VS (Pin 9) | Positive supply for output stage | Sets VOH/VOL logic levels (e.g., +VS = 3.3V → VOH ≈ 2.9V); independent of VCC enables level translation. |
| VCC (Pin 10) | Positive supply for input stage | Biases input differential pair; VCC–VEE ≥ 2.7V required - allows wide analog input range even with low +VS. |
Key Features
| Feature | Design Value |
|---|---|
| UltraFast 4ns propagation delay | Enables real-time threshold detection in >200MSPS sampling systems without pipeline latency penalties. |
| Independent input/output supplies | Eliminates need for external level shifters when interfacing ±5V sensor outputs to 1.8V/3.3V FPGA I/O banks. |
| Internal 4mV hysteresis | Stabilizes output against noise on slowly varying inputs (e.g., thermistor ramps, battery voltage monitoring) without external feedback. |
| Pinout optimized for high-speed use | Input pins (1–4) are flanked by VEE (5) and GND (6), then separated from outputs (7–8) by +VS (9) and VCC (10) - reducing crosstalk to <0.5mV. |
| Rail-to-rail TTL/CMOS-compatible outputs | Drives standard logic families directly; VOH/VOL specs guaranteed across full temperature and load range - no margin loss in production. |
Applications
| High-Speed Differential Line Receiver | Level Translator |
|---|---|
Use Scenario: Receiving 100MHz LVDS-like differential clock/data pairs in test instrumentation front ends. IC Role / Device Role / Timing Role: Dual comparator acting as high-fidelity differential receiver with matched propagation paths for clock and data channels. Use Value: 150MHz toggle capability and <1ns inter-channel skew ensure accurate data capture at 100Mbps with minimal timing uncertainty. |
Use Scenario: Converting ±5V op-amp output signals to 3.3V logic levels for microcontroller ADC trigger inputs. IC Role / Device Role / Timing Role: Level-shifting comparator with independent VCC/VEE (±5V) and +VS/GND (3.3V) supplies. Use Value: Eliminates discrete resistor dividers and buffer ICs - reduces BOM count, layout area, and propagation delay variation. |
| Crystal Oscillator Circuit | Threshold Detector/Discriminator |
Use Scenario: Sustaining oscillation in Pierce-type crystal oscillator designs using AT-cut 1–20MHz fundamental crystals. IC Role / Device Role / Timing Role: High-gain, low-phase-noise comparator providing gain and zero-crossing detection in oscillator feedback loop. Use Value: 4ns delay and low input bias current (<1μA) minimize crystal pullability error and sustain reliable startup across temperature. |
Use Scenario: Detecting overvoltage/undervoltage conditions on 12V automotive power rails with hysteresis to prevent relay chatter. IC Role / Device Role / Timing Role: Precision window comparator using both channels to define upper/lower thresholds around nominal 12V. Use Value: Internal hysteresis (2–7mV) and low offset drift (10μV/°C) ensure stable trip points across –40°C to +70°C ambient. |
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 (2.7V–6V), no separate VEE; 4.5ns delay; 100MHz toggle; 8-pin SOIC | Lacks negative input capability - unsuitable for bipolar analog interfaces or level translation from negative rails. | Select when system uses only positive supplies and space-constrained SOIC layout is preferred over MSOP. |
| ADCMP572BCPZ-R2 | 3.3V-only supply; 2.5ns delay; 2.5GHz toggle; CML outputs; 16-pin LFCSP | Requires external termination and AC-coupled inputs; not rail-to-rail - incompatible with direct TTL/CMOS loading. | Select for RF/microwave sampling where sub-3ns timing and GHz bandwidth outweigh interface complexity. |
Compared with LT1715CMS#PBF, LT1720IMS8#PBF simplifies supply design but sacrifices input flexibility, while ADCMP572BCPZ-R2 delivers superior speed at the cost of analog interface compatibility and layout overhead.
Availability
LT1715CMS#PBF is available at Aetrix Electronics and suitable for high-speed test equipment, industrial PLC I/O modules, and precision timing subsystems requiring stable component supply across extended production lifecycles.
Supply support for LT1715CMS#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. (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The LT1715CMS#PBF belongs to ADI's legacy Linear Technology UltraFast™ comparator family, engineered specifically for timing-critical applications demanding sub-5ns decision latency, robust noise immunity, and multi-supply interoperability in compact form factors.
FAQ
What is the minimum supply voltage requirement for LT1715CMS#PBF?
The LT1715CMS#PBF requires VCC–VEE ≥ 2.7V for the input stage and +VS–GND ≥ 2.7V for the output stage. VEE must be ≤ GND. For example, valid configurations include VCC = 5V, VEE = 0V, +VS = 3.3V, GND = 0V - enabling single-supply analog input with 3.3V logic output. The LT1715CMS#PBF datasheet specifies absolute maximum ratings up to 13.2V across supply rails.
Does LT1715CMS#PBF support negative input voltages?
Yes - the LT1715CMS#PBF input common-mode range extends 100mV below VEE. With VEE = –5V, inputs can swing down to –5.1V, making it suitable for bipolar signal conditioning. However, inputs below VEE – 0.1V may forward-bias substrate diodes, increasing bias current; external Schottky clamps are recommended for sustained overdrive. The LT1715CMS#PBF maintains correct polarity as long as at least one input stays within its specified common-mode window.
How does internal hysteresis affect threshold accuracy in LT1715CMS#PBF?
The LT1715CMS#PBF features 2–7mV of internal hysteresis, defined as the difference between VTRIP+ and VTRIP–. This hysteresis stabilizes output against noise but introduces a small deadband: for a target 2.5V threshold, the actual rising-edge trip may be 2.502V and falling-edge trip 2.498V. Offset voltage (VOS = average of trip points) is guaranteed ≤3.5mV, and hysteresis variation with supply/temperature is tightly controlled - critical for repeatable window detection. The LT1715CMS#PBF specification table explicitly defines min/typ/max hysteresis across temperature grades.
Can LT1715CMS#PBF drive 50Ω transmission lines directly?
Yes - the LT1715CMS#PBF rail-to-rail outputs can source 4mA and sink 10mA, supporting DC-terminated 50Ω loads (e.g., 5V into 50Ω = 100mA, beyond spec). For clean 100MHz signal integrity, use series termination: place a 33Ω resistor in series with each output, close to the LT1715CMS#PBF pin, driving a 50Ω PCB trace to a CMOS input. Avoid unterminated long traces - output rise/fall times are ≤2ns, making reflections problematic beyond ~5cm without proper termination.
What is the operating temperature range for LT1715CMS#PBF?
The LT1715CMS#PBF is rated for 0°C to 70°C (commercial grade), with full electrical specifications guaranteed across this range. It is distinct from the LT1715IMS#PBF (–40°C to 85°C) and LT1715HMS#PBF (–40°C to 125°C). The "C" suffix denotes the commercial temperature grade; thermal performance is characterized with θJA = 120°C/W on a standard 2oz copper FR-4 board. Derating is required above 70°C ambient - the LT1715CMS#PBF junction temperature must not exceed 150°C.
LT1715CMS#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):
- 6µA @ ±5V
- Current - Input Bias (Max):
- 20mA
- Current - Output (Typ):
- 2mA
- Current - Quiescent (Max):
- 70dB CMRR, 80dB PSRR
- CMRR, PSRR (Typ):
- 9ns
- Propagation Delay (Max):
- 6mV
- Hysteresis:
- 0°C ~ 70°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 10-MSOP
LT1715CMS#PBF FAQ
1.How can I place an order for LT1715CMS#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1715CMS#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 LT1715CMS#PBF reliable?
The price and inventory of LT1715CMS#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1715CMS#PBF is usually 5 days.
3.What payment methods are accepted for LT1715CMS#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1715CMS#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1715CMS#PBF?
LT1715CMS#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1715CMS#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 LT1715CMS#PBF?
For technical support, including LT1715CMS#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1715CMS#PBF requirements.
6.How does Aetrix verify that LT1715CMS#PBF is sourced from the original manufacturer or authorized distributors?
All LT1715CMS#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 LT1715CMS#PBF meets industry standards.
7.What is the process for return or replacement of LT1715CMS#PBF?
All LT1715CMS#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1715CMS#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 LT1715CMS#PBF part is unused and in its original packaging.
Return procedure for LT1715CMS#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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