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Analog Devices Inc./Maxim Integrated DS1100LU-250+
- Part No.:
- DS1100LU-250+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Delay Lines
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
DS1100LU-250+.pdf
- Description:
- IC DELAY LINE 5TAP 250NS 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:3,365
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Product details
Overview
DS1100LU-250+ from Maxim Integrated is a 3.3V, 5-tap silicon delay line with nominal delays of 50ns (TAP 1), 100ns (TAP 2), 150ns (TAP 3), 200ns (TAP 4), and 250ns (TAP 5), operating over -40°C to +85°C, driving up to 10 LS-TTL loads per tap, and housed in an 8-pin µMAX package. It reproduces both leading and trailing edges with equal precision for timing-critical digital signal alignment.
For engineers reviewing the DS1100LU-250+ datasheet, DS1100LU-250+ pinout, DS1100LU-250+ application, or DS1100LU-250+ equivalent, key selection factors include tap delay accuracy (±4ns for ≤40ns taps, ±13% for >40ns taps at full temperature range), 3.3V CMOS/TTL compatibility, low-power operation (10mA typical ICC), and µMAX footprint constraints for high-density PCB layouts.
Technical Context
The DS1100LU-250+ implements a monolithic all-silicon delay architecture-no hybrid or ceramic components-ensuring stable propagation delay across voltage (3.0V–3.6V) and temperature (-40°C to +85°C). All five taps exhibit correlated drift: if one tap slows with temperature, all slow proportionally, preserving inter-tap spacing integrity.
Each output delivers TTL-/CMOS-compatible logic levels with IOH = -1mA and IOL = 8mA at minimum VCC, and features 2.0–2.5ns output rise/fall times. Input pulse width must exceed 20% of TAP 5 delay (i.e., ≥50ns) to maintain specified delay tolerance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 3.0V to 3.6V - ensures compatibility with 3.3V system rails and noise margin against VCC droop |
| TAP 5 Delay | 250ns nominal - fixed, factory-trimmed delay used for precise clock/data phase alignment |
| Delay Tolerance | ±13% over -40°C to +85°C - defines worst-case skew between input and TAP 5 under full industrial conditions |
| Output Drive | 10 × 74LS loads - supports direct fanout to legacy TTL logic without buffering |
| Power-Up Time | 200μs - maximum delay before stable output after VCC ramp; critical for power sequenced systems |
| Input Capacitance | 5–10pF - limits high-frequency loading on preceding driver stage and affects edge integrity |
Pinout & Package
DS1100LU-250+ uses the 8-pin µMAX package (outline U8+1), 3mm × 3mm body, 0.65mm pitch, exposed pad for thermal enhancement. Pin 1 is IN; pins 2–5 are TAP 2 through TAP 5; pin 6 is TAP 3; pin 7 is VCC; pin 8 is GND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN (Pin 1) | Signal Input | Accepts TTL/CMOS-compatible pulses; requires ≥50ns minimum width for full delay spec compliance |
| TAP 2 (Pin 2) | Delayed Output | Delivers input signal delayed by 100ns; drives up to 10 LS-TTL loads |
| TAP 4 (Pin 3) | Delayed Output | Delivers input signal delayed by 200ns; matches TAP 2 drive strength and edge fidelity |
| GND (Pin 4) | Ground Reference | Primary return path for all internal logic and output currents; must be low-impedance |
| TAP 1 (Pin 5) | Delayed Output | Delivers input signal delayed by 50ns; lowest-delay tap with ±4ns tolerance at +25°C |
| TAP 3 (Pin 6) | Delayed Output | Delivers input signal delayed by 150ns; center tap enabling symmetric delay interpolation |
| VCC (Pin 7) | Supply Input | 3.3V power rail; requires local 0.1μF ceramic decoupling adjacent to pin |
| TAP 5 (Pin 8) | Delayed Output | Delivers input signal delayed by 250ns; highest-delay tap with ±13% tolerance over full temp range |
Key Features
| Feature | Design Value |
|---|---|
| All-silicon delay core | Eliminates hybrid component aging and thermal hysteresis, ensuring long-term delay stability |
| Equal-edge precision | Simultaneous leading- and trailing-edge delay matching enables clean pulse-width preservation |
| Correlated tap drift | All five delays shift uniformly with temperature/voltage, maintaining fixed inter-tap spacing |
| µMAX surface-mount package | 3mm × 3mm footprint saves >60% board area vs. SO-8 while supporting vapor-phase reflow |
| Lead(Pb)-free/RoHS-compliant | Meets IPC-J-STD-020C reflow profiles for lead-free assembly (260°C peak) |
Applications
| Digital Signal Deskewing | High-Speed Bus Timing |
|---|---|
Use Scenario: Aligning skewed data lanes in parallel memory interfaces where trace length mismatches cause setup/hold violations. IC Role / Device Role / Timing Role: DS1100LU-250+ provides calibrated, multi-tap delays to realign individual DQ lines to match the slowest lane. Use Value: Enables reliable DDR2/DDR3 read capture without FPGA-based deskew logic or custom PCB length tuning. | Use Scenario: Compensating for propagation delay differences between clock and control signals in microprocessor address/data buses. IC Role / Device Role / Timing Role: DS1100LU-250+ inserts precise, matched delays on chip-select or write-enable paths to meet timing windows relative to CLK. Use Value: Eliminates need for discrete RC networks or layout-dependent trace delays, improving design repeatability. |
| Pulse Width Restoration | Logic Glitch Filtering |
Use Scenario: Restoring degraded pulse widths in noisy industrial control signals caused by capacitive coupling or long cable runs. IC Role / Device Role / Timing Role: DS1100LU-250+ reproduces clean, full-width logic transitions using its leading/trailing edge accuracy. Use Value: Prevents false triggering in PLC input modules by ensuring minimum pulse width compliance for Schmitt-trigger inputs. | Use Scenario: Removing sub-100ns glitches from reset or interrupt lines in embedded systems exposed to EMI. IC Role / Device Role / Timing Role: DS1100LU-250+ acts as a hardware-based pulse stretcher via TAP 1 (50ns) and OR-gating external logic. Use Value: Provides deterministic, zero-software glitch suppression independent of MCU clock or firmware state. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar delay line applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DS1100LZ-250+ | Same delay values and electrical specs, but in 8-pin SO (150-mil) package - larger footprint, higher thermal resistance | Better suited for prototyping or manual assembly; less optimal for space-constrained boards | Select DS1100LZ-250+ when SO-8 footprint is already allocated or thermal derating above 362mW is required |
| ON Semiconductor MC100EP195MNR4G | Differential ECL outputs, 3.3V supply, 5-tap, but ±15ps jitter and no guaranteed inter-tap correlation | Targets high-speed serial links requiring ultra-low jitter; not suitable for TTL-level bus deskew | Select MC100EP195MNR4G only for differential signaling systems where ECL logic levels and sub-ns jitter are mandatory |
Compared with DS1100LZ-250+, the DS1100LU-250+ saves PCB area and improves thermal performance in compact designs; compared with MC100EP195MNR4G, it offers guaranteed TTL-compatible outputs and correlated tap drift-critical for deterministic digital timing alignment.
Availability
DS1100LU-250+ is available at Aetrix Electronics and suitable for digital signal deskewing, high-speed bus timing, and pulse width restoration requiring stable component supply, RoHS compliance, and µMAX footprint efficiency.
Supply support for DS1100LU-250+ 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, now part of Analog Devices, designs precision analog and mixed-signal ICs for industrial, communications, and computing applications.
The DS1100L series was developed as an economical, all-silicon replacement for hybrid delay lines in digital timing alignment-targeting cost-sensitive, high-reliability embedded systems needing predictable, temperature-stable delays.
FAQ
What is the nominal delay value for each tap of the DS1100LU-250+?
The DS1100LU-250+ provides five equally spaced nominal delays: TAP 1 = 50ns, TAP 2 = 100ns, TAP 3 = 150ns, TAP 4 = 200ns, and TAP 5 = 250ns. These values are factory-trimmed and specified at +25°C with VCC = 3.3V. The DS1100LU-250+ datasheet Table 1 confirms these exact values for the "-250" suffix variant.
Does the DS1100LU-250+ support both rising and falling edge delay accuracy?
Yes, the DS1100LU-250+ is explicitly designed to reproduce both leading and trailing edges with equal precision. Its all-silicon architecture ensures matched tPLH (rising delay) and tPHL (falling delay) across all five taps, preserving pulse width integrity-a key requirement for glitch filtering and bus timing applications using the DS1100LU-250+.
What is the maximum load drive capability per tap on the DS1100LU-250+?
Each tap of the DS1100LU-250+ can drive up to 10 standard 74LS logic inputs. This is confirmed in the General Description section and supported by the DC Electrical Characteristics table, which specifies IOL = 8mA and IOH = -1mA at minimum VCC. This drive strength allows direct interfacing with legacy TTL logic without external buffers in most DS1100LU-250+ implementations.
Is the DS1100LU-250+ compatible with lead-free reflow processes?
Yes, the DS1100LU-250+ carries the "+" suffix indicating RoHS-compliant, lead(Pb)-free packaging. Its µMAX package is qualified for lead-free reflow with a peak temperature of +260°C, as stated in the Absolute Maximum Ratings section. This makes the DS1100LU-250+ suitable for modern automated assembly lines adhering to JEDEC J-STD-020C standards.
How does temperature affect delay variation across taps in the DS1100LU-250+?
Temperature-induced delay variation in the DS1100LU-250+ is correlated across all taps: if one tap slows, all slow proportionally, preserving inter-tap spacing. Over -40°C to +85°C, delay tolerance is ±13% for TAP 5 (250ns), meaning absolute delay ranges from 217.5ns to 282.5ns. This behavior is documented in Note 3 of the DS1100LU-250+ datasheet and is fundamental to its use in timing-critical alignment tasks.
DS1100LU-250+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Number of Taps/Steps:
- 5
- Function:
- Nonprogrammable
- Delay to 1st Tap:
- 50ns
- Tap Increment:
- 50 ns
- Available Total Delays:
- 250ns
- Number of Independent Delays:
- 1
- Voltage - Supply:
- 3V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-uMAX/uSOP
DS1100LU-250+ FAQ
1.How can I place an order for DS1100LU-250+ through Aetrix?
Please submit a Request for Quotation (RFQ) for DS1100LU-250+ 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 DS1100LU-250+ reliable?
The price and inventory of DS1100LU-250+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DS1100LU-250+ is usually 5 days.
3.What payment methods are accepted for DS1100LU-250+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS1100LU-250+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DS1100LU-250+?
DS1100LU-250+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DS1100LU-250+ 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 DS1100LU-250+?
For technical support, including DS1100LU-250+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS1100LU-250+ requirements.
6.How does Aetrix verify that DS1100LU-250+ is sourced from the original manufacturer or authorized distributors?
All DS1100LU-250+ 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 DS1100LU-250+ meets industry standards.
7.What is the process for return or replacement of DS1100LU-250+?
All DS1100LU-250+ units undergo pre-shipment inspection (PSI). If there is an issue with DS1100LU-250+, 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 DS1100LU-250+ part is unused and in its original packaging.
Return procedure for DS1100LU-250+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DS1100LU-250+ Tags
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