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Analog Devices Inc./Maxim Integrated DS1023S-25+
- Part No.:
- DS1023S-25+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Delay Lines
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
DS1023S-25+.pdf
- Description:
- IC DEL LN 256TAP 63.75NS 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:494
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Product details
Overview
DS1023S-25+ from Maxim Integrated (formerly Dallas Semiconductor) is an 8-bit programmable silicon delay line IC with 0.25 ns step resolution, 63.75 ns maximum delay in normal mode, and on-chip reference delay for full 0–360° clock phase control. It supports parallel/serial programming, operates from a single 5V supply, and is used in precision timing alignment of high-speed digital clocks.
For engineers reviewing the DS1023S-25+ datasheet, DS1023S-25+ pinout, DS1023S-25+ application, or DS1023S-25+ equivalent, this page provides verified functional identity, confirmed package mapping to 16-pin SOIC, validated pin roles, real-world timing use cases, and two technically documented alternative parts with explicit differences in step size and max delay.
Technical Context
The DS1023S-25+ implements a digitally programmable analog delay path using CMOS-based tapped delay-line architecture with internal trimming for monotonicity. Its reference delay output (REF/PWM pin) is trimmed to ~22 ns-slightly exceeding the step zero delay-to enable true zero-relative delay calibration against the delayed output (OUT).
It offers dual-mode operation via MS pin: when MS = 0, OUT delivers non-inverted delayed signal and REF delivers fixed reference; when MS = 1, OUT delivers inverted delayed signal and REF functions as pulse-width modulated (PWM) output triggered by input rising edge, with programmable pulse width down to 5 ns minimum.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Delay Step Size | 0.25 ns - enables sub-nanosecond timing resolution for fine-grained clock skew correction |
| Max Delay (wrt REF) | 63.75 ns - usable full-range delay in normal mode, sufficient for aligning signals across one 25 MHz clock period (40 ns) |
| Step Zero Delay | −1.5 to +22 ns - inherent propagation offset; compensated by on-chip REF output for absolute zero-delay reference |
| Input Frequency Max | 25 MHz - supports synchronization in mid-speed digital systems including FPGA I/O timing and bus arbitration |
| Min Input Pulse Width | 20 ns - defines shortest detectable trigger for reliable delay programming and PWM generation |
| Supply Voltage | 4.75 V to 5.25 V - tight 5V ±5% tolerance ensures stable delay line performance across industrial temperature range |
| Integral Non-linearity | ±1 ns - maximum deviation from ideal linear delay vs. programmed value, critical for deterministic jitter control |
Pinout & Package
DS1023S-25+ is housed in a 16-pin 300-mil SOIC package (JEDEC MS-012), pin-compatible with the DIP variant DS1023-25+ but with surface-mount footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN | Primary signal input | Accepts TTL/CMOS logic-level clock or pulse; all internal delays measured from its rising edge |
| OUT/OUT | Programmable delayed output | Delivers non-inverted delay (MS=0) or inverted delay (MS=1); used for clock forwarding or oscillator feedback |
| REF/PWM | Reference or PWM output | Provides fixed ~22 ns reference (MS=0) or rising-edge-triggered PWM pulse (MS=1) with width set by program value |
| P0–P7 | Parallel programming inputs | 8-bit latchable data bus (P0=LSB, P7=MSB); unused pins P3–P7 must be tied to VCC or GND to prevent floating |
| LE | Latch Enable | High enables parallel data capture; falling edge latches P0–P7 into delay register; required for bus-shared applications |
| P/S | Parallel/Serial mode select | Low = parallel mode; high = serial mode; polarity reversed vs. DS1020/DS1021 |
| MS | Output Mode Select | Low = REF/OUT mode; high = PWM/OUT mode; determines function of REF and polarity of OUT |
| GND / VCC | Power terminals | Single 5V supply; decoupling capacitor recommended at VCC pin per layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| On-chip reference delay | Trimmed ~22 ns REF output cancels step zero variation, enabling true zero-relative delay calibration |
| Configurable output modes | MS pin selects between delay-line (REF/OUT) or PWM generator (PWM/OUT), eliminating external logic |
| Guaranteed monotonicity | Delay increases strictly with increasing program value-no skipped or reversed steps across temperature |
| Daisy-chain serial programming | Q/P0 and D/P2 pins support cascading multiple DS1023S-25+ units for synchronized multi-channel delay control |
| Free-running oscillator capability | External connection of OUT to IN creates self-oscillating circuit with frequency determined by programmed delay |
Applications
| Phase-Aligned Clock Distribution | Digital Signal Skew Correction |
|---|---|
|
Use Scenario: Aligning clock edges across multiple ASIC/FPGA banks to meet setup/hold timing across PCB traces of unequal length. IC Role / Device Role / Timing Role: DS1023S-25+ acts as a programmable deskew element, inserting calibrated delay on one clock branch to match propagation delay of another. Use Value: Enables deterministic inter-bank clock alignment within ±1 ns, avoiding metastability in high-speed synchronous interfaces. |
Use Scenario: Compensating for trace-length-induced skew between data and strobe signals in source-synchronous memory interfaces (e.g., DDR source-synchronous capture). IC Role / Device Role / Timing Role: DS1023S-25+ delays the strobe signal relative to data to center sampling window at data eye midpoint. Use Value: Improves timing margin by up to 12.5% over uncorrected layouts, supporting reliable 200+ Mbps data rates. |
| Pulse Width Modulation Generator | Free-Running Oscillator |
|
Use Scenario: Generating variable-duty-cycle timing pulses for analog control loops, LED dimming, or power converter gate drive modulation. IC Role / Device Role / Timing Role: DS1023S-25+ functions as a digitally programmable PWM core, with input trigger and programmable pulse width down to 5 ns. Use Value: Delivers 0–63.75 ns pulse widths with 0.25 ns resolution-enabling precise analog-equivalent control without microcontroller overhead. |
Use Scenario: Creating low-jitter, temperature-stable clock sources where crystal oscillators are impractical (e.g., space-constrained modules, radiation-hardened designs). IC Role / Device Role / Timing Role: DS1023S-25+ serves as a programmable ring oscillator by feeding OUT back to IN, with frequency set by delay value. Use Value: Generates 6.6–22 MHz output (per Table 2), offering field-adjustable frequency without component change or BOM proliferation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable delay line applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DS1023S-50+ | 0.5 ns step size, 127.5 ns max delay, same 25 MHz input frequency limit | Better suited for coarse delay tuning where 0.25 ns resolution is unnecessary; trades resolution for extended range | Select DS1023S-50+ when system timing margins exceed ±0.5 ns and longer delay spans (>63.75 ns) are required |
| DS1023S-100+ | 1 ns step size, 255 ns max delay, identical input specs and pinout | Optimized for applications needing >100 ns delay with relaxed resolution; higher integral non-linearity (±4 ns) | Choose DS1023S-100+ for clock period extension beyond one cycle (e.g., 10 MHz clock alignment) where 1 ns quantization is acceptable |
Compared with DS1023S-25+, DS1023S-50+ doubles step size and max delay while retaining identical interface and supply; DS1023S-100+ quadruples step size and octuples max delay but sacrifices linearity-making DS1023S-25+ optimal for sub-nanosecond precision within its 63.75 ns envelope.
Availability
DS1023S-25+ is available at Aetrix Electronics and suitable for phase-aligned clock distribution, digital signal skew correction, pulse width modulation generation, free-running oscillator design, and reference delay calibration requiring stable component supply across industrial temperature range.
Supply support for DS1023S-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) is a U.S.-based semiconductor company specializing in precision analog, mixed-signal, and high-reliability timing solutions.
The DS1023S-25+ belongs to Maxim's programmable timing element product line, designed specifically for sub-nanosecond digital delay, clock deskew, and hardware-based PWM generation in industrial and communications infrastructure.
FAQ
What is the actual delay resolution and maximum delay achievable with DS1023S-25+?
The DS1023S-25+ provides a guaranteed 0.25 ns delay step size and achieves up to 63.75 ns maximum delay in normal mode (MS = 0) when referenced to the on-chip REF output. This is calculated as 255 × 0.25 ns, where 255 is the maximum 8-bit programmed value. Absolute delay from IN to OUT includes step zero variation (−1.5 to +22 ns), but using REF eliminates that offset for precision alignment.
How does the DS1023S-25+ support clock phase adjustment over a full 0–360° range?
The DS1023S-25+ achieves full 0–360° phase control by combining its programmable delay path with an on-chip reference delay (REF/PWM pin) trimmed to ~22 ns. When the device is programmed for zero delay, the OUT signal appears before REF due to negative step zero, allowing relative delays from −22 ns to +63.75 ns-covering more than one full period of a 25 MHz clock (40 ns).
Can DS1023S-25+ generate PWM signals, and what is the minimum usable pulse width?
Yes, DS1023S-25+ can generate PWM signals when configured with MS = 1. In this mode, the REF/PWM pin outputs a pulse whose width equals the programmed delay value. The minimum reliable PWM pulse width is 5 ns; values below this may cause degraded high-level voltage or no discernible output due to internal response limits.
What are the power supply and operating temperature requirements for DS1023S-25+?
DS1023S-25+ operates from a single 4.75 V to 5.25 V supply (5 V ±5%) and is specified for 0°C to +70°C ambient temperature. It draws 30–60 mA active current and requires proper decoupling at the VCC pin. Unused parallel inputs (P3–P7) must be tied to defined logic levels-floating pins are prohibited per CMOS design rules.
Is DS1023S-25+ pin-compatible with other variants in the DS1023 family?
Yes, DS1023S-25+ is fully pin-compatible with DS1023S-50+, DS1023S-100+, DS1023S-200+, and DS1023S-500+ in the 16-pin SOIC package. All share identical pinout, programming interface (P/S, LE, MS), supply, and logic thresholds-only delay step size, max delay, and AC timing parameters differ between variants.
DS1023S-25+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Number of Taps/Steps:
- 256
- Function:
- 1-Shot, Programmable
- Delay to 1st Tap:
- 16.5ns
- Tap Increment:
- 250 ps
- Available Total Delays:
- 63.75ns
- Number of Independent Delays:
- 1
- Voltage - Supply:
- 4.75V ~ 5.25V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
DS1023S-25+ FAQ
1.How can I place an order for DS1023S-25+ through Aetrix?
Please submit a Request for Quotation (RFQ) for DS1023S-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 DS1023S-25+ reliable?
The price and inventory of DS1023S-25+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DS1023S-25+ is usually 5 days.
3.What payment methods are accepted for DS1023S-25+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS1023S-25+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DS1023S-25+?
DS1023S-25+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DS1023S-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 DS1023S-25+?
For technical support, including DS1023S-25+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS1023S-25+ requirements.
6.How does Aetrix verify that DS1023S-25+ is sourced from the original manufacturer or authorized distributors?
All DS1023S-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 DS1023S-25+ meets industry standards.
7.What is the process for return or replacement of DS1023S-25+?
All DS1023S-25+ units undergo pre-shipment inspection (PSI). If there is an issue with DS1023S-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 DS1023S-25+ part is unused and in its original packaging.
Return procedure for DS1023S-25+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DS1023S-25+ Tags
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LTC6994CS6-1#TRMPBF
Analog Devices Inc.
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Analog Devices Inc.
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Analog Devices Inc.
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