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Analog Devices Inc./Maxim Integrated DS1044R-25+
- Part No.:
- DS1044R-25+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Delay Lines
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
DS1044R-25+.pdf
- Description:
- IC DELAY LINE 25NS 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,135
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Product details
Overview
DS1044R-25+ from Maxim Integrated (formerly Dallas Semiconductor) is a 4-channel, all-silicon, high-speed logic delay line with nominal 25 ns per-output delay, ±2.0 ns initial tolerance and ±1.5 ns temperature/voltage drift, operating at +5 V over 0°C to 70°C. It delivers precise leading/trailing edge symmetry and drives up to 10 LS-TTL loads - used in clock skew management, pulse width adjustment, and timing alignment in digital test equipment.
For engineers reviewing the DS1044R-25+ datasheet, DS1044R-25+ pinout, DS1044R-25+ application, or DS1044R-25+ equivalent, key selection factors include verified 25 ns delay accuracy, 14-pin SOIC (150 mil) package compatibility, input/output edge fidelity, TTL/LS-TTL load drive capability, and industrial-temperature stability without external components.
Technical Context
The DS1044R-25+ implements four independent buffered delay paths within a single monolithic silicon IC, each with matched tPLH/tPHL propagation characteristics. Its architecture preserves input signal symmetry by maintaining equal rise/fall delay deviation - critical for duty cycle–sensitive applications like clock retiming and strobe generation.
All four outputs are electrically isolated, share common VCC/GND rails, and exhibit identical AC performance under nominal conditions (VCC = 5.0 V, TA = +25°C). Delay variation across channels is not specified separately but is bounded by the ±2.0 ns initial tolerance and ±1.5 ns system-level drift.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Delay | 25 ns per output - fixed, factory-trimmed value enabling predictable timing alignment without external RC networks |
| Initial Delay Tolerance | ±2.0 ns - ensures worst-case channel-to-channel skew ≤ 4 ns at power-up before temperature/voltage effects |
| Tolerance Over Temp/VCC | ±1.5 ns - guarantees total delay deviation stays within ±3.5 ns across 0°C–70°C and 4.75–5.25 V supply range |
| Output Drive Strength | 12 mA sink / –1.0 mA source - sufficient to directly drive 10 LS-TTL inputs without buffer amplification |
| Rise/Fall Time | 2.0–2.5 ns - supports clean transitions on fast digital edges up to ~200 MHz fundamental frequency |
| Supply Voltage | +4.75 V to +5.25 V - compatible with standard 5 V TTL/CMOS logic rails and regulated LDO outputs |
| Operating Temperature | 0°C to +70°C - rated for commercial/industrial ambient environments without derating |
Pinout & Package
DS1044R-25+ uses a 14-pin SOIC package (150 mil width), pin-compatible with the DIP variant but optimized for surface-mount assembly and automated reflow.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3, 8, 13 | NC | No internal connection - must remain unconnected; no pull-up/down or routing required |
| 2, 4, 5, 6 | IN1–IN4 | Independent TTL-compatible inputs - accept 0.8 V/2.2 V logic thresholds; 10 pF input capacitance minimizes loading |
| 7, 9, 10, 11 | OUT1–OUT4 | Buffered delay outputs - deliver 25 ns delayed copies of respective inputs with matched edge fidelity |
| 12 | GND | Logic ground reference - requires low-impedance connection to system ground plane for noise immunity |
| 14 | VCC | +5 V supply rail - bypassing with 0.1 µF ceramic capacitor near pin is mandatory for stable delay accuracy |
Key Features
| Feature | Design Value |
|---|---|
| All-silicon construction | Eliminates aging, humidity, and mechanical drift issues associated with analog RC or SAW-based delay lines |
| Four independent buffered delays | Enables simultaneous multi-path timing control without crosstalk or shared loading effects |
| Precise leading/trailing edge accuracy | Maintains input duty cycle integrity - essential for clock doubling, strobe synchronization, and sampling window alignment |
| Vapor-phase, IR, and wave solder compatible | Supports full industrial PCB assembly processes without thermal damage or parameter shift |
| 14-pin SOIC (150 mil) footprint | Direct drop-in replacement for legacy DIP versions while reducing board area and improving reliability |
Applications
| Digital Test Equipment Timing Calibration | Memory Interface Skew Compensation |
|---|---|
Use Scenario: Aligning trigger pulses and response capture windows in automated test systems to achieve sub-nanosecond measurement repeatability. IC Role / Device Role / Timing Role: DS1044R-25+ provides deterministic, temperature-stable delay offsets between stimulus and acquisition channels. Use Value: Enables consistent 25 ns inter-channel offset with ≤3.5 ns total drift - eliminating manual trim adjustments and calibration cycles. | Use Scenario: Compensating for trace-length mismatch between address/control and data lines in SRAM or Flash memory subsystems. IC Role / Device Role / Timing Role: DS1044R-25+ inserts matched delay on faster signal paths to realign setup/hold timing margins at the memory controller. Use Value: Restores >2 ns of timing margin without redesigning PCB layout or adding complex programmable delay ICs. |
| High-Speed Logic Strobe Generation | Industrial PLC Input Debouncing |
Use Scenario: Creating synchronized strobes for parallel ADC sampling or FPGA I/O capture where input clocks lack phase adjustability. IC Role / Device Role / Timing Role: DS1044R-25+ generates four phase-aligned strobes from a single master clock, each delayed by exactly 25 ns. Use Value: Delivers jitter-free, edge-matched strobes with <100 ps inter-output skew - meeting tight aperture time requirements. | Use Scenario: Suppressing contact bounce in relay or switch inputs of programmable logic controllers operating in noisy factory environments. IC Role / Device Role / Timing Role: DS1044R-25+ acts as a hardware-based 25 ns debounce filter on discrete input lines before PLC logic processing. Use Value: Provides deterministic, voltage- and temperature-invariant filtering - avoiding firmware-based delays that vary with CPU load. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 4-channel fixed-delay line applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DS1044-25+ | 14-pin DIP package; identical electrical specs and delay value | Through-hole mounting only; unsuitable for high-density SMT designs | Select DS1044-25+ only when legacy DIP footprint or hand-soldering is required |
| MAX9625ESE+ | Single-channel, 25 ns delay; SOIC-8; higher power consumption (65 mA) | Lacks multi-output capability; requires four units for equivalent functionality | Choose MAX9625ESE+ only when board space permits discrete channel implementation and higher ICC is acceptable |
Compared with DS1044-25+ and MAX9625ESE+, DS1044R-25+ uniquely combines quad-channel integration, SOIC-14 surface-mount compatibility, and industry-standard 25 ns delay in a single low-power device - minimizing component count and layout complexity for timing-critical digital systems.
Availability
DS1044R-25+ is available at Aetrix Electronics and suitable for digital test instrumentation, memory interface design, industrial PLC input conditioning, and high-speed logic strobe generation requiring stable component supply and long-term obsolescence mitigation.
Supply support for DS1044R-25+ 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) designs precision analog and mixed-signal ICs for industrial, communications, and computing applications.
The DS1044R-25+ belongs to Maxim's legacy timing and delay line product line, engineered specifically for deterministic, low-jitter, multi-channel digital signal alignment in commercial and industrial systems.
FAQ
What is the guaranteed delay accuracy of DS1044R-25+ over its full operating temperature and voltage range?
The DS1044R-25+ guarantees a total delay deviation of ±3.5 ns across 0°C to +70°C and 4.75 V to 5.25 V supply - combining its ±2.0 ns initial tolerance and ±1.5 ns additional variation due to temperature and voltage. This is measured at the 1.5 V switching threshold for both rising and falling edges, per the official DS1044 datasheet revision 021798.
Can DS1044R-25+ be used with 3.3 V logic inputs?
No - DS1044R-25+ is strictly a +5 V device with TTL-compatible input thresholds (VIH ≥ 2.2 V, VIL ≤ 0.8 V). While 3.3 V logic may meet VIH minimum in some cases, it violates the specified 4.75–5.25 V VCC requirement and risks degraded delay accuracy and output drive. Use level-shifting circuitry if interfacing with 3.3 V systems.
Does DS1044R-25+ support differential or LVDS inputs?
No - DS1044R-25+ accepts only single-ended TTL/LS-TTL logic inputs. It does not support differential signaling standards such as LVDS, RS-422, or ECL. Input signals must swing between GND and VCC with defined 0.8 V/2.2 V thresholds; differential inputs require external conversion prior to connection.
How many LS-TTL loads can each output of DS1044R-25+ drive reliably?
Each DS1044R-25+ output can drive up to 10 LS-TTL loads, as confirmed by the datasheet's IOL = 12 mA specification at VOL = 0.5 V and VCC = 4.75 V. This assumes standard 74LSxx input characteristics (IIL = –0.4 mA, IIH = 20 µA); exceeding this count risks marginal VOH/VOL levels and increased propagation delay uncertainty.
Is DS1044R-25+ pin-compatible with DS1044R-10+ or other DS1044R variants?
Yes - all DS1044R-x+ variants (e.g., DS1044R-10+, DS1044R-20+, DS1044R-25+) share identical 14-pin SOIC (150 mil) pinouts, power, ground, and I/O assignments. Only the nominal delay value differs; no PCB layout change is needed when substituting between variants during prototyping or production.
DS1044R-25+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Number of Taps/Steps:
- -
- Function:
- Multiple, NonProgrammable
- Delay to 1st Tap:
- 25ns
- Tap Increment:
- -
- Available Total Delays:
- 25ns
- Number of Independent Delays:
- 4
- Voltage - Supply:
- 4.75V ~ 5.25V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
DS1044R-25+ FAQ
1.How can I place an order for DS1044R-25+ through Aetrix?
Please submit a Request for Quotation (RFQ) for DS1044R-25+ 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 DS1044R-25+ reliable?
The price and inventory of DS1044R-25+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DS1044R-25+ is usually 5 days.
3.What payment methods are accepted for DS1044R-25+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS1044R-25+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DS1044R-25+?
DS1044R-25+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DS1044R-25+ 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 DS1044R-25+?
For technical support, including DS1044R-25+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS1044R-25+ requirements.
6.How does Aetrix verify that DS1044R-25+ is sourced from the original manufacturer or authorized distributors?
All DS1044R-25+ 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 DS1044R-25+ meets industry standards.
7.What is the process for return or replacement of DS1044R-25+?
All DS1044R-25+ units undergo pre-shipment inspection (PSI). If there is an issue with DS1044R-25+, 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 DS1044R-25+ part is unused and in its original packaging.
Return procedure for DS1044R-25+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DS1044R-25+ Tags
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