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Analog Devices Inc./Maxim Integrated DS1045-5
- Part No.:
- DS1045-5
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Delay Lines
- Package:
- 16-DIP (0.300", 7.62mm)
- Datasheet:
-
DS1045-5.pdf
- Description:
- PROGRAMMABLE DELAY LINE
- Quantity:
- Payment:
- Shipping:
Inventory:125
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Product details
Overview
DS1045-5 from Maxim Integrated (formerly Dallas Semiconductor) is a 4-bit dual programmable silicon delay line IC with one input and two independently programmable outputs, offering 16 discrete delay values from 9ns to 84ns in 5ns increments, ±4.1ns max tolerance, TTL/CMOS-compatible, and used for edge-aligned timing control in digital test equipment and high-speed logic synchronization.
For engineers reviewing the DS1045-5 datasheet, DS1045-5 pinout, DS1045-5 application, or DS1045-5 equivalent, key selection considerations include its 5ns delay step resolution, dual-output edge-accurate delay capability, parallel programming via A0–A3/B0–B3, enable-controlled latching (EA/EB), and compatibility with 74LS loads in industrial timing circuits.
Technical Context
The DS1045-5 implements a fully static CMOS delay architecture with independent 4-bit parallel programming paths for OUTA and OUTB, each selecting one of 16 fixed delay taps from an internal tapped delay chain. Delay resolution is fixed at 5ns per LSB across the full 9–84ns range, with both tPLH and tPHL specified for rising and falling edge accuracy.
It supports two operational modes: non-latched (EA/EB held high) and latched (EA/EB pulsed), requiring tDSE = 10ns setup and tEDV = 15ns enable-to-valid delay. Input-to-output propagation delay is fully deterministic and independent of input pulse width, provided tWI ≥ 100% of selected output delay.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Delay Range | 9ns to 84ns in 5ns steps - enables precise alignment of dual signals across 16 discrete timing offsets |
| Delay Tolerance | ±4.1ns max - ensures predictable edge placement under 0°C to +70°C operation |
| Input Compatibility | TTL/CMOS logic levels - interfaces directly with 74LS, 74F, and standard microcontroller GPIO without level-shifting |
| Output Drive | Drives 10 × 74LS loads - sufficient fanout for multi-receiver timing distribution |
| Supply Voltage | 4.75V to 5.25V - operates within standard 5V ±5% rail, compatible with legacy digital systems |
| Enable Timing | tEDV = 15ns, tEW = 15ns - defines minimum pulse width and valid-delay latency when using EA/EB latching |
| Input Capacitance | 10pF typical - minimizes loading on upstream clock or strobe sources |
Pinout & Package
DS1045-5 is available in 16-pin plastic DIP (0.300" width) and 16-pin SOIC (300-mil) packages, both RoHS-compliant and auto-insertable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN | Primary signal input | Accepts TTL/CMOS pulses; triggers both delay paths synchronously |
| OUTA, OUTB | Dual programmable delayed outputs | Each reproduces IN with independently programmed delay; both edges preserved |
| A0–A3 | Parallel delay select for OUTA | 4-bit binary code sets OUTA delay (0000 = 9ns, 1111 = 84ns) |
| B0–B3 | Parallel delay select for OUTB | 4-bit binary code sets OUTB delay independently of OUTA |
| EA, EB | Output enable/latch control | Active-high; latches A0–A3/B0–B3 values on rising edge; must meet tDSE/tDHE |
| VCC, GND | Power supply terminals | Single 5V supply; decoupling required near VCC pin for noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent delay paths | Enables generation of two precisely offset timing signals from one input-critical for skew calibration and pulse-width modulation |
| Edge-accurate delay | Both tPLH and tPHL are specified and matched - preserves pulse integrity for high-speed logic interfacing |
| Parallel 4-bit programming | Allows static or dynamic delay configuration via DIP switches, FPGA I/O, or microcontroller port - no serial interface overhead |
| Low-power CMOS design | ICC ≤ 35mA at 5.25V and 1MHz toggle rate - suitable for dense PCB layouts with thermal constraints |
| Auto-insertable packaging | DIP and SOIC variants support automated assembly - eliminates manual soldering in production test fixtures |
Applications
| Logic Skew Compensation | Digital Test Equipment |
|---|---|
Use Scenario: Synchronizing clock and data paths in high-speed bus interfaces where trace-length mismatch causes timing skew. IC Role / Device Role / Timing Role: DS1045-5 provides calibrated, edge-aligned delay on one path to realign setup/hold windows. Use Value: Enables reliable sampling at >100MHz without redesigning PCB layout or adding complex PLL-based deskew. | Use Scenario: Generating precisely timed stimulus and capture windows in automated test systems (ATE) for ASIC validation. IC Role / Device Role / Timing Role: DS1045-5 acts as a programmable trigger delay generator with sub-10ns resolution. Use Value: Replaces expensive hybrid delay modules with repeatable, temperature-stable silicon timing at lower BOM cost. |
| Pulse Width Modulation | High-Speed Logic Interface |
Use Scenario: Creating adjustable-width strobes for memory controller write-enable or ADC sampling windows. IC Role / Device Role / Timing Role: DS1045-5 generates two delayed versions of a master pulse to define leading/trailing edges of variable-width output. Use Value: Achieves 5ns-resolution pulse width tuning without FPGA logic resources or external counters. | Use Scenario: Matching propagation delays between multiple receivers sharing a common clock in FPGAs or DSPs. IC Role / Device Role / Timing Role: DS1045-5 inserts deterministic delay on one receiver path to equalize flight times. Use Value: Eliminates timing violations caused by interconnect asymmetry in multi-drop clock trees. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable delay line applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DS1045-4 | 4ns delay step, 9–69ns range, ±3.3ns tolerance | Narrower max delay range; better resolution for mid-range timing needs | Select when 69ns ceiling suffices and tighter delay tolerance is preferred over extended range |
| DS1045-3 | 3ns delay step, 9–54ns range, ±2.5ns tolerance | Finest resolution but lowest max delay; optimized for sub-55ns precision alignment | Choose for applications requiring <3ns granularity and operating below 54ns, such as LVDS channel deskew |
Compared with DS1045-4 and DS1045-3, the DS1045-5 delivers the widest delay span (84ns) at 5ns resolution, making it optimal for applications needing maximum flexibility in coarse timing adjustment-e.g., wide-window test stimulus generation-while trading off some resolution and tolerance tightness.
Availability
DS1045-5 is available at Aetrix Electronics and suitable for logic skew compensation, digital test equipment, pulse width modulation, and high-speed logic interface applications requiring stable component supply and long-term obsolescence management.
Supply support for DS1045-5 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 markets.
The DS1045-5 belongs to Maxim's programmable delay line product line, engineered to replace hybrid and ceramic delay solutions with all-silicon reliability, consistent edge accuracy, and auto-insertable packaging for test and timing-critical systems.
FAQ
What is the minimum and maximum delay achievable with the DS1045-5?
The DS1045-5 provides a guaranteed delay range from 9ns (minimum, with ±1ns inherent variation) to 84ns (maximum), in fixed 5ns increments. All 16 delay values-9, 14, 19, ..., 84ns-are defined in Table 2 of the datasheet and are selectable via A0–A3 or B0–B3 inputs. This range is specific to the DS1045-5 variant and differs from DS1045-3 and DS1045-4.
How does the DS1045-5 ensure both rising and falling edge accuracy?
The DS1045-5 uses matched CMOS delay elements to maintain identical tPLH and tPHL propagation characteristics across its entire operating range. Its datasheet specifies both parameters under identical test conditions (VCC = 5V, TA = 25°C), confirming edge-aligned delay performance. This allows the DS1045-5 to preserve pulse width and duty cycle integrity-critical for clock distribution and strobe generation.
Can the DS1045-5 be used without enabling EA and EB pins?
Yes. When EA and EB are held high (VIH), the DS1045-5 operates in non-latched mode: A0–A3 and B0–B3 inputs are sampled continuously, and delay changes take effect after tPDV = 10ns. This simplifies static configuration using pull-up resistors or DIP switches. The DS1045-5 remains fully functional without pulsing EA/EB, though latching is required for synchronized dynamic reprogramming.
What load drive capability does the DS1045-5 support?
The DS1045-5 is rated to drive ten 74LS-type loads (IOL = 8mA, IOH = –1mA at VCC = 4.75V). Its outputs meet TTL voltage thresholds and exhibit low output impedance, enabling direct connection to standard logic families without buffers. This drive strength is verified across the full 0°C to +70°C temperature range and is integral to the DS1045-5's role in multi-receiver timing distribution.
Is the DS1045-5 available in both through-hole and surface-mount packages?
Yes. The DS1045-5 is offered in two standard packages: 16-pin plastic DIP (0.300" width) and 16-pin SOIC (300-mil body). Both packages are auto-insertable, RoHS-compliant, and share identical pinouts and electrical specifications. The DIP version supports prototyping and legacy through-hole assembly, while the SOIC variant meets space-constrained PCB requirements in production systems.
DS1045-5 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 16-DIP (0.300", 7.62mm)
- Packaging:
- Bulk
- Product Status:
- Active
- Number of Taps/Steps:
- 16
- Function:
- Multiple, Programmable
- Delay to 1st Tap:
- 9ns
- Tap Increment:
- 5 ns
- Available Total Delays:
- 84ns
- Number of Independent Delays:
- 2
- Voltage - Supply:
- 4.75V ~ 5.25V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 16-PDIP
DS1045-5 FAQ
1.How can I place an order for DS1045-5 through Aetrix?
Please submit a Request for Quotation (RFQ) for DS1045-5 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 DS1045-5 reliable?
The price and inventory of DS1045-5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DS1045-5 is usually 5 days.
3.What payment methods are accepted for DS1045-5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS1045-5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DS1045-5?
DS1045-5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DS1045-5 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 DS1045-5?
For technical support, including DS1045-5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS1045-5 requirements.
6.How does Aetrix verify that DS1045-5 is sourced from the original manufacturer or authorized distributors?
All DS1045-5 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 DS1045-5 meets industry standards.
7.What is the process for return or replacement of DS1045-5?
All DS1045-5 units undergo pre-shipment inspection (PSI). If there is an issue with DS1045-5, 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 DS1045-5 part is unused and in its original packaging.
Return procedure for DS1045-5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DS1045-5 Tags
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