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Analog Devices Inc./Maxim Integrated DS1020-15
- Part No.:
- DS1020-15
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Delay Lines
- Package:
- 16-DIP (0.300", 7.62mm)
- Datasheet:
-
DS1020-15.pdf
- Description:
- IC DELAY LN 256TAP 48.25NS 16DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,370
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Product details
Overview
DS1020-15 from Dallas Semiconductor (now Maxim Integrated) is a programmable 8-bit all-silicon delay line IC with 0.15 ns incremental delay steps, 10 ns inherent delay, ±4 ns max deviation from programmed value, and TTL/CMOS-compatible output driving capability. It serves as a precise, non-inverting timing element in high-speed digital signal alignment applications such as clock deskew and pulse width adjustment.
For engineers reviewing the DS1020-15 datasheet, DS1020-15 pinout, DS1020-15 application, or DS1020-15 equivalent, key selection considerations include its 48.25 ns maximum delay, dual programming interfaces (3-wire serial or 8-bit parallel), rising/falling edge accuracy, 16-pin DIP/SOIC packaging, and CMOS low-power operation at 5 V.
Technical Context
The DS1020-15 implements an 8-bit user-programmable delay register controlling a silicon-based analog delay path. Delay resolution is fixed at 0.15 ns per LSB, with total programmable range from 10.00 ns to 48.25 ns in 256 equal steps. The device reproduces input logic state at output without inversion and maintains accuracy on both rising and falling edges.
It supports two mutually exclusive programming modes: parallel mode (S = 1) using P0–P7 pins for direct 8-bit loading, and serial mode (S = 0) using C, D, Q, and E signals for daisy-chainable configuration. Settling time after delay change is 50 µs, and unused CMOS inputs require defined logic levels to prevent floating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Max Delay | 48.25 ns - defines upper bound of adjustable timing window for signal alignment |
| Incremental Step | 0.15 ns - enables fine-grained control for sub-nanosecond timing calibration |
| Inherent Delay | 10.00 ± 2 ns - base propagation latency present even at zero program setting |
| Delay Accuracy | ±4 ns max deviation - ensures predictable timing margin across temperature and voltage |
| Supply Voltage | 4.75 V to 5.25 V - compatible with standard 5 V TTL/CMOS logic rails |
| Input Compatibility | TTL/CMOS - accepts 2.2 V min VIH and 0.8 V max VIL, simplifying interface design |
| Output Drive | Drives 10 × 74LS loads - sufficient fanout for legacy logic interfacing without buffering |
Pinout & Package
DS1020-15 is available in standard 16-pin DIP (300-mil) and 16-pin SOIC (300-mil) packages. Pin numbering follows industry-standard dual-inline and small-outline conventions with identical signal mapping.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN | Delay Input | Primary signal entry point; delay timing measured from this pin's 1.5 V transition |
| OUT | Delay Output | Non-inverted replica of IN after programmed delay; accurate on both edges |
| P0–P7 | Parallel Program Inputs | 8-bit bus for direct delay value loading in parallel mode (S = 1) |
| S | Mode Select | High = parallel mode; Low = serial mode - configures interface protocol at power-up |
| E | Enable | Active-high latch/control signal; required high during serial load or parallel data capture |
| C | Serial Clock | Rising-edge-triggered clock for MSB-first serial data shifting into internal register |
| D | Serial Data Input | Accepts 8-bit delay value in serial mode; must be held stable during tDSC/tDHC windows |
| Q | Serial Data Output / P0 | Outputs MSB-first register contents during read; also functions as LSB in parallel mode |
| VCC | Power Supply | +5 V supply; decoupling recommended near pin for noise-sensitive timing paths |
| GND | Ground Reference | Signal and power return; critical for maintaining delay accuracy and edge fidelity |
Key Features
| Feature | Design Value |
|---|---|
| All-silicon construction | Eliminates hybrid module reliability risks and thermal drift issues common in ceramic delay lines |
| Dual programming interfaces | Enables flexible integration-parallel for static configuration, serial for dynamic reprogramming or daisy-chaining |
| Rising and falling edge accuracy | Ensures consistent delay for both transitions, supporting pulse-width preservation in timing-critical paths |
| Auto-insertable DIP and low-profile SOIC | Supports both through-hole manufacturing and space-constrained surface-mount PCB layouts |
| Low-power CMOS operation | Draws ≤30 mA active current, reducing thermal load and enabling dense timing-function placement |
Applications
| High-Speed Clock Deskew | Pulse Width Adjustment |
|---|---|
Use Scenario: Aligning multiple clock domains in FPGA or ASIC test systems where skew between reference and feedback clocks must be minimized. IC Role / Device Role / Timing Role: Non-inverting programmable delay element inserted in clock distribution path to compensate for trace-length mismatch. Use Value: Achieves sub-0.2 ns resolution tuning to meet <100 ps skew budgets without custom PCB revisions. | Use Scenario: Generating precise pulse widths for laser diode drivers or RF switch control in test instrumentation. IC Role / Device Role / Timing Role: Delay-based pulse stretcher/compressor that shapes input trigger edges into calibrated output pulses. Use Value: Delivers repeatable 10.00–48.25 ns output widths with ±4 ns tolerance, eliminating need for discrete RC networks. |
| Logic Signal Alignment | Serial Configuration Cascading |
Use Scenario: Synchronizing asynchronous handshake signals between microcontroller peripherals and external memory controllers. IC Role / Device Role / Timing Role: Edge-aligned delay buffer placed on setup/hold timing paths to meet interface timing windows. Use Value: Provides deterministic 0.15 ns step granularity to resolve marginal timing violations without redesigning logic timing constraints. | Use Scenario: Dynamically configuring multiple delay stages in automated test equipment (ATE) channel calibration modules. IC Role / Device Role / Timing Role: Serially programmable node in daisy-chained topology, sharing one controller's S/C/D/E lines across up to N units. Use Value: Reduces GPIO count by 7× versus parallel programming, enabling compact multi-channel timing boards with single-port control. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable delay line applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DS1023-15 | Same 0.15 ns step and 48.25 ns max delay, but includes internal oscillator and automatic self-calibration circuitry | Requires no external programming interface; suited for fixed-delay, plug-and-play use cases | Select DS1023-15 when system-level programmability is unnecessary and board space is constrained |
| ICS853S01I | Fixed 1.5 ns delay with ±0.15 ns variation; no programmability; LVDS output; 3.3 V supply only | Designed for high-speed serial link timing, not general-purpose logic alignment | Select ICS853S01I only for LVDS signaling environments requiring ultra-low jitter fixed delays |
Compared with DS1020-15, DS1023-15 eliminates external programming overhead but sacrifices flexibility, while ICS853S01I trades programmability for lower jitter and LVDS compatibility-neither offers pin-to-pin replacement, and both require layout and interface changes.
Availability
DS1020-15 is available at Aetrix Electronics and suitable for high-speed clock deskew, pulse width adjustment, logic signal alignment, and serial configuration cascading requiring stable component supply and long-term industrial availability.
Supply support for DS1020-15 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
Dallas Semiconductor, acquired by Maxim Integrated in 2001, specialized in precision timing, memory, and analog interface ICs for industrial and communications applications.
The DS1020 family was designed to replace hybrid delay modules with monolithic CMOS solutions offering better reliability, smaller footprint, and programmable flexibility for digital timing correction tasks.
FAQ
What is the inherent delay of the DS1020-15, and how does it affect minimum timing adjustment?
The DS1020-15 has an inherent (step-zero) delay of 10.00 ± 2 ns, meaning even with all program bits set to zero, the signal experiences this base latency. This sets the absolute minimum delay achievable and must be included when calculating total system timing budgets. For applications requiring delays below 10 ns, the DS1020-15 is not suitable, and alternative fixed-delay or zero-delay buffers should be considered. The DS1020-15's 0.15 ns step size applies above this base value.
Can the DS1020-15 be used in both 16-pin DIP and 16-pin SOIC footprints interchangeably?
Yes, the DS1020-15 is offered in both 16-pin DIP (300-mil) and 16-pin SOIC (300-mil) packages with identical pinout and electrical specifications. Pin numbering and signal mapping are fully compatible between packages, allowing direct substitution in existing designs. However, thermal and parasitic differences mean layout-dependent timing performance may vary slightly-designers should validate signal integrity in target PCB stackup for each package type. The DS1020-15's SOIC variant supports automated SMT assembly.
How does the DS1020-15 handle rising and falling edges, and what is the impact on pulse integrity?
The DS1020-15 guarantees identical delay values for both rising and falling edges within its specified tolerance (±4 ns), preserving pulse width and duty cycle across the full programmable range. This edge-matched behavior ensures that input pulses retain shape fidelity at the output, making the DS1020-15 suitable for applications like clock deskew and pulse shaping where waveform symmetry is critical. The DS1020-15 achieves this via matched internal path design-not separate rising/falling delay registers.
What are the power supply requirements and current consumption characteristics of the DS1020-15?
The DS1020-15 operates from a single 4.75 V to 5.25 V supply and draws up to 30 mA active current under worst-case conditions (VCC = max, 1 µs period). It exhibits typical CMOS quiescent behavior-current scales with input frequency and switching activity. No separate ground or bias supplies are needed. Decoupling capacitance (e.g., 0.1 µF ceramic near VCC/GND pins) is recommended to maintain delay stability. The DS1020-15 does not support 3.3 V operation.
Is the DS1020-15 capable of daisy-chaining multiple units, and what are the wiring requirements?
Yes, the DS1020-15 supports daisy-chaining in serial mode: connect Q (serial output) of one unit to D (serial input) of the next, with shared S, C, and E lines. Each device requires eight clock cycles to load its 8-bit value, so N devices need 8N total bits sent MSB-first. A 1 kΩ–10 kΩ pull-up resistor between Q and D on the last-to-first link enables destructive readback with automatic restoration. Daisy-chaining preserves pin count efficiency but increases total programming time linearly with unit count. The DS1020-15's Q pin is rated for 4 mA sourcing, sufficient only for driving other DS1020-15 inputs.
DS1020-15 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 16-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Number of Taps/Steps:
- 256
- Function:
- Programmable
- Delay to 1st Tap:
- 10ns
- Tap Increment:
- 150 ps
- Available Total Delays:
- 48.25ns
- Number of Independent Delays:
- 1
- Voltage - Supply:
- 4.75V ~ 5.25V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 16-PDIP
DS1020-15 FAQ
1.How can I place an order for DS1020-15 through Aetrix?
Please submit a Request for Quotation (RFQ) for DS1020-15 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 DS1020-15 reliable?
The price and inventory of DS1020-15 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DS1020-15 is usually 5 days.
3.What payment methods are accepted for DS1020-15?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS1020-15 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DS1020-15?
DS1020-15 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DS1020-15 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 DS1020-15?
For technical support, including DS1020-15 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS1020-15 requirements.
6.How does Aetrix verify that DS1020-15 is sourced from the original manufacturer or authorized distributors?
All DS1020-15 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 DS1020-15 meets industry standards.
7.What is the process for return or replacement of DS1020-15?
All DS1020-15 units undergo pre-shipment inspection (PSI). If there is an issue with DS1020-15, 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 DS1020-15 part is unused and in its original packaging.
Return procedure for DS1020-15:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DS1020-15 Tags
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LTC6994CS6-1#TRMPBF
Analog Devices Inc.
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Analog Devices Inc.
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LTC6994IS6-1#TRMPBF
Analog Devices Inc.
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Analog Devices Inc.
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Analog Devices Inc.
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Analog Devices Inc.
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Analog Devices Inc.
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Analog Devices Inc.
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LTC6994HS6-2#TRMPBF
Analog Devices Inc.
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Analog Devices Inc.
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Analog Devices Inc.
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DS1124U-25+T
Analog Devices Inc./Maxim Integrated
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