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Analog Devices Inc./Maxim Integrated DS1135LU-15+TR
- Part No.:
- DS1135LU-15+TR
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Delay Lines
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
DS1135LU-15+TR.pdf
- Description:
- 3V 3-IN-1 HIGH-SPEEDDELAY LINE
- Quantity:
- Payment:
- Shipping:
Inventory:5,999
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Product details
Overview
DS1135LU-15+TR from Maxim Integrated (formerly Dallas Semiconductor) is a 3V, 3-in-1 high-speed all-silicon delay line IC with three independent buffered outputs, each delivering precisely matched 15ns propagation delay (tPLH/tPHL), ±0.5ns tolerance over –40°C to +85°C, and leading/trailing edge symmetry preservation. It operates from 2.7V to 3.6V and is used in clock deskewing, signal alignment, and timing calibration circuits in industrial control and test equipment.
For engineers reviewing the DS1135LU-15+TR datasheet, DS1135LU-15+TR pinout, DS1135LU-15+TR application, or DS1135LU-15+TR equivalent, key selection criteria include guaranteed 15ns delay per output, ±0.5ns industrial-grade temperature stability, 8-pin µSOP (118mil) package compatibility, and replacement readiness for legacy DS1033-based designs.
Technical Context
The DS1135LU-15+TR implements three identical, fully buffered delay paths in a single monolithic silicon structure-no external RC networks or crystal components. Each path delivers matched tPLH and tPHL of 15ns under VCC = 2.7–3.6V and full industrial temperature range, with ≤0.5ns skew between outputs.
It uses CMOS-compatible input thresholds (VIH ≥ 2.0V, VIL ≤ 0.8V), drives 74F04-equivalent loads (15pF), and achieves 2.0–2.5ns output rise/fall times. Power-up stabilization occurs within 1ms, and active supply current is 10mA at VCC = 3.6V with 1s period.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Delay per Output | 15ns (tPLH/tPHL), matched across all three outputs for precise signal alignment |
| Delay Tolerance | ±0.5ns over –40°C to +85°C, enabling robust timing in industrial environments |
| Supply Voltage Range | 2.7V to 3.6V - compatible with modern 3V logic systems without level-shifting |
| Output Rise/Fall Time | 2.0–2.5ns into 15pF load - supports high-speed digital interface timing budgets |
| Input Pulse Width | ≥100% of delay value (i.e., ≥15ns) - ensures reliable triggering without pulse truncation |
| Power-Up Time | 1ms - guarantees stable delay operation after power application, critical for cold-start systems |
| Operating Temperature | –40°C to +85°C - qualified for extended industrial and embedded deployment |
Pinout & Package
DS1135LU-15+TR is housed in an 8-pin µSOP package (118mil body width, JEDEC MO-187 variant), lead-free and RoHS-compliant, compatible with vapor-phase and IR reflow soldering per J-STD-020A.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN1, IN2, IN3 | Dedicated input signals for each delay channel | CMOS-compatible inputs accepting 0–3.3V logic; no internal pull-ups/downs |
| OUT1, OUT2, OUT3 | Buffered delay outputs | Matched 15ns delays with <2.5ns edge transition time into 15pF |
| VCC | +3V supply rail | Must be decoupled locally; supports 2.7–3.6V operation with 10mA max ICC |
| GND | Ground reference | Common return for all inputs, outputs, and supply; requires low-inductance connection |
Key Features
| Feature | Design Value |
|---|---|
| All-silicon architecture | Eliminates aging, drift, and environmental sensitivity inherent in RC or crystal-based delay solutions |
| Three independent buffered delays | Enables parallel timing correction of multiple signals without cross-talk or loading effects |
| Leading and trailing edge precision | Maintains input duty-cycle symmetry at outputs-critical for clock distribution and data strobe alignment |
| Industrial temperature qualification | Guaranteed 15ns delay stability across –40°C to +85°C, validated per AC/DC specs |
| Standard µSOP footprint | 118mil 8-pin package enables drop-in replacement in space-constrained PCB layouts |
Applications
| Industrial PLC Timing Calibration | High-Speed Test Equipment Signal Deskew |
|---|---|
Use Scenario: Synchronizing I/O response timing across distributed modules in programmable logic controllers where input sampling and output update must align within sub-20ns windows. IC Role / Device Role / Timing Role: DS1135LU-15+TR provides deterministic, temperature-stable 15ns offsets to compensate for trace-length mismatches between CPU and remote I/O racks. Use Value: Enables deterministic real-time loop execution without software-based jitter compensation or FPGA logic overhead. | Use Scenario: Aligning stimulus and capture channels in automated test equipment (ATE) during high-frequency digital pattern generation and acquisition. IC Role / Device Role / Timing Role: DS1135LU-15+TR applies identical 15ns delay to three parallel trigger lines driving DUT interface buffers, ensuring simultaneous edge arrival. Use Value: Reduces inter-channel skew to <0.5ns, improving measurement repeatability and pass/fail margin confidence. |
| Legacy DS1033 Replacement System Upgrade | Embedded Controller Clock Edge Adjustment |
Use Scenario: Modernizing aging industrial instrumentation that originally used DS1033 delay lines but now requires 3V operation and improved thermal stability. IC Role / Device Role / Timing Role: DS1135LU-15+TR serves as a direct functional upgrade-same pin count and logic behavior, with tighter delay tolerance and lower voltage compliance. Use Value: Eliminates redesign effort while extending product lifecycle and reducing field failure rates due to voltage/temperature drift. | Use Scenario: Fine-tuning clock-to-data setup/hold margins in microcontroller-based sensor fusion nodes using SPI or I²C peripherals. IC Role / Device Role / Timing Role: DS1135LU-15+TR inserts calibrated 15ns delay on the peripheral clock path to optimize timing closure without modifying firmware or layout. Use Value: Resolves marginal timing violations without requiring higher-cost FPGAs or custom ASICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 3-output fixed-delay line applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DS1135LZ-15+ | Same die and delay spec, but in 8-pin SO (150mil) package - 0.15mm larger body width and 1.27mm pitch vs. µSOP's 0.5mm pitch | Preferred where board assembly uses standard SOIC footprints or wave-solder processes | Select DS1135LZ-15+ only if µSOP reflow capability is unavailable or PCB layout lacks µSOP land pattern clearance |
| MAX9992EUA+ | Single-output 15ns delay line in µSOP-8; no multi-output integration - requires three units for same functionality | Suitable when channel isolation is prioritized over board area or BOM count | Choose MAX9992EUA+ only if independent delay tuning per channel or differential signaling support is required |
Compared with DS1135LZ-15+, DS1135LU-15+TR saves PCB area and reduces component count via integrated triple delay; compared with MAX9992EUA+, it eliminates inter-device skew and simplifies routing, though it lacks per-channel configurability.
Availability
DS1135LU-15+TR is available at Aetrix Electronics and suitable for industrial PLC timing calibration, high-speed test equipment signal deskew, and legacy DS1033 replacement system upgrades requiring stable component supply and long-term obsolescence mitigation.
Supply support for DS1135LU-15+TR 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
Maxim Integrated (acquired by Analog Devices in 2021) is a U.S.-based semiconductor company specializing in precision analog, mixed-signal, and high-reliability timing solutions for industrial, automotive, and communications markets.
The DS1135L series was designed specifically to replace aging discrete or hybrid delay solutions with monolithic, temperature-stable, 3V-compatible silicon delay lines for mission-critical timing alignment in embedded control and instrumentation.
FAQ
What is the guaranteed delay accuracy of DS1135LU-15+TR over temperature?
The DS1135LU-15+TR guarantees ±0.5ns delay tolerance over the full industrial temperature range of –40°C to +85°C, as specified in Table 1 of the official datasheet. This applies to both tPLH and tPHL for all three outputs, measured at VCC = 2.7V to 3.6V. Initial tolerance at +25°C is ±1.0ns.
Is DS1135LU-15+TR pin-compatible with DS1033?
DS1135LU-15+TR is not pin-compatible with DS1033 - the DS1033 uses an 8-pin DIP or SO package with different pin assignments (e.g., shared VCC/GND pins and non-buffered outputs). However, DS1135LU-15+TR is explicitly positioned as a recommended functional replacement, offering superior delay stability, 3V operation, and buffered outputs in a modern µSOP footprint.
Can DS1135LU-15+TR drive standard TTL or CMOS loads?
Yes - DS1135LU-15+TR is specified to drive one 74F04-equivalent load (15pF capacitive load) with 2.0–2.5ns rise/fall times. Its output levels meet CMOS thresholds (VOH ≥ 2.0V at VCC = 2.7V, VOL ≤ 0.4V), and it sources/sinks up to 1mA/8mA respectively, making it compatible with standard 3V logic families including 74LVC and 74ALVC.
Does DS1135LU-15+TR require external passive components for operation?
No - DS1135LU-15+TR is a fully self-contained all-silicon delay line requiring only a local 0.1µF ceramic bypass capacitor on VCC to GND. No external resistors, capacitors, crystals, or trimming components are needed. The device delivers factory-trimmed 15ns delay without user calibration or adjustment.
What is the maximum input frequency supported by DS1135LU-15+TR?
DS1135LU-15+TR does not specify a maximum input frequency directly, but its minimum input pulse width is defined as ≥100% of the delay value (i.e., ≥15ns), implying a practical upper limit near 33MHz for square-wave operation. For reliable edge-triggered use, input periods should exceed 30ns to avoid pulse overlap and ensure clean output transitions.
DS1135LU-15+TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Number of Taps/Steps:
- -
- Function:
- Multiple, NonProgrammable
- Delay to 1st Tap:
- 15ns
- Tap Increment:
- -
- Available Total Delays:
- 15ns
- Number of Independent Delays:
- 3
- Voltage - Supply:
- 2.7V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-uMAX/uSOP
DS1135LU-15+TR FAQ
1.How can I place an order for DS1135LU-15+TR through Aetrix?
Please submit a Request for Quotation (RFQ) for DS1135LU-15+TR 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 DS1135LU-15+TR reliable?
The price and inventory of DS1135LU-15+TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DS1135LU-15+TR is usually 5 days.
3.What payment methods are accepted for DS1135LU-15+TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS1135LU-15+TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DS1135LU-15+TR?
DS1135LU-15+TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DS1135LU-15+TR 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 DS1135LU-15+TR?
For technical support, including DS1135LU-15+TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS1135LU-15+TR requirements.
6.How does Aetrix verify that DS1135LU-15+TR is sourced from the original manufacturer or authorized distributors?
All DS1135LU-15+TR 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 DS1135LU-15+TR meets industry standards.
7.What is the process for return or replacement of DS1135LU-15+TR?
All DS1135LU-15+TR units undergo pre-shipment inspection (PSI). If there is an issue with DS1135LU-15+TR, 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 DS1135LU-15+TR part is unused and in its original packaging.
Return procedure for DS1135LU-15+TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DS1135LU-15+TR Tags
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Analog Devices Inc./Maxim Integrated
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