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Analog Devices Inc./Maxim Integrated DS1135U-8+
- Part No.:
- DS1135U-8+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Delay Lines
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
DS1135U-8+.pdf
- Description:
- IC DELAY LINE 8NS 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:4,117
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Product details
Overview
DS1135U-8+ from Maxim Integrated is a high-speed, +5V silicon delay line IC featuring three independent buffered logic delays of 8 ns each, precise leading/trailing edge timing (±1.0 ns initial tolerance), and operation across -40°C to +85°C. It replaces DS1013/DS1035 in clock skew management, signal alignment, and pulse shaping circuits for industrial control and test instrumentation.
For engineers reviewing the DS1135U-8+ datasheet, DS1135U-8+ pinout, DS1135U-8+ application, or DS1135U-8+ equivalent, key selection criteria include guaranteed 8 ns per-output delay with ±1.5 ns total tolerance over temperature/voltage, 5V supply compatibility, SOIC-8 package footprint, and LS-TTL load drive capability (10 loads per output).
Technical Context
The DS1135U-8+ implements an all-silicon delay architecture with three identical, isolated delay paths-each delivering fixed 8 ns propagation (tPLH/tPHL) with matched rise/fall characteristics (2.0–2.5 ns). It operates strictly at +5V (4.75–5.25 V), with no internal regulation or voltage scaling.
Its logic-level input interface accepts VIH ≥ 2.2 V and VIL ≤ 0.8 V, and outputs drive 74F04-equivalent loads under 15 pF capacitive loading. Power-up stabilization requires 100 ms before stable delays are produced.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Delay per output | 8 ns (tPLH/tPHL), matched across all three channels |
| Initial delay tolerance | ±1.0 ns at +25°C, 5.0 V - ensures tight batch consistency |
| Temp/voltage tolerance | ±1.5 ns over -40°C to +85°C and 4.75–5.25 V - enables robust field operation |
| Output drive strength | 12 mA sink / -1.0 mA source at VOL=0.5 V / VOH=4.0 V - supports 10 LS-TTL loads |
| Rise/fall time | 2.0–2.5 ns - preserves signal integrity for high-speed digital edges |
| Supply voltage | +5V ±5% (4.75–5.25 V) - requires dedicated 5V rail, not 3.3V compatible |
| Power-up time | 100 ms - defines minimum reset-to-ready interval after power application |
Pinout & Package
DS1135U-8+ is housed in an 8-pin SOIC (150-mil) package with gull-wing leads, RoHS-compliant (indicated by "+" suffix), and qualified for vapor phase, IR, and wave soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN1, IN2, IN3 | Dedicated input terminals | Accept TTL-compatible logic signals; electrically isolated inputs enable independent delay path triggering |
| OUT1, OUT2, OUT3 | Dedicated buffered outputs | Each delivers identical 8 ns delayed replica with LS-TTL drive strength and matched edge timing |
| VCC | Positive supply | +5V power pin; must be decoupled locally (typical 0.1 µF ceramic) to maintain delay stability |
| GND | Ground reference | Common return for all inputs, outputs, and internal circuitry; shared ground plane required for timing accuracy |
Key Features
| Feature | Design Value |
|---|---|
| Three independent buffered delays | Enables simultaneous, non-interacting delay of three separate control or clock signals on one die |
| Precision leading & trailing edge matching | Maintains input pulse symmetry (duty cycle) at outputs - critical for clock distribution and sampling alignment |
| All-silicon construction | Eliminates quartz or analog RC drift; provides superior long-term stability and shock resistance vs. mechanical resonators |
| Industrial temperature range support | Guaranteed 8 ns delay performance from -40°C to +85°C - suitable for factory automation and outdoor electronics |
| LS-TTL load compatibility | Directly interfaces with legacy 74LS/74F logic families without level-shifting or buffering |
Applications
| Industrial PLC Timing Modules | Automated Test Equipment (ATE) |
|---|---|
Use Scenario: Synchronizing multiple I/O scan cycles and interrupt response windows within programmable logic controllers. IC Role / Device Role / Timing Role: DS1135U-8+ provides deterministic 8 ns offsets between sensor read, actuator enable, and watchdog timeout signals. Use Value: Eliminates race conditions in multi-stage control loops by aligning edge-triggered events with sub-nanosecond repeatability. | Use Scenario: Calibrating time-interval measurement units and generating precisely staggered stimulus pulses for DUT characterization. IC Role / Device Role / Timing Role: DS1135U-8+ serves as a traceable, solid-state delay reference for validating picosecond-resolution time analyzers. Use Value: Replaces bulkier, less stable coaxial cable or analog delay lines - improving calibration repeatability and system portability. |
| Digital Oscilloscope Trigger Alignment | High-Speed Data Acquisition Systems |
Use Scenario: Matching trigger path latency to analog front-end signal paths to ensure zero-timebase skew in multi-channel acquisition. IC Role / Device Role / Timing Role: DS1135U-8+ delays the external trigger signal to match ADC sampling clock propagation delay. Use Value: Enables true simultaneous sampling across channels without post-processing skew correction - preserving phase coherence. | Use Scenario: Aligning timestamp markers with sampled data streams in distributed sensor networks using FPGA-based capture engines. IC Role / Device Role / Timing Role: DS1135U-8+ inserts calibrated delay into GPIO timestamp paths to compensate for routing asymmetry in PCB layout. Use Value: Reduces timestamp jitter below 2 ns RMS, meeting IEEE 1588 boundary clock synchronization requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar silicon delay line applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DS1135Z-8+ | Identical electrical specs and timing; differs only in package marking (Z = SOIC-150mil, U = same physical package per Maxim package code S8+2) | No functional difference; both rated for industrial temp range and RoHS compliance | Select DS1135U-8+ for tape-and-reel volume procurement; DS1135Z-8+ may reflect older ordering channel labeling |
| DS1013-8+ | Slower speed (max 10 MHz input), higher delay tolerance (±3 ns), and obsolete status per Maxim replacement guidance | Limited to lower-frequency control logic; lacks DS1135U-8+'s precision edge matching and industrial temp guarantee | DS1135U-8+ is the recommended drop-in upgrade per Maxim's official replacement notice |
Compared with DS1135Z-8+, DS1135U-8+ offers identical timing performance but reflects updated packaging and sourcing logistics; versus DS1013-8+, it delivers tighter delay accuracy, faster edge response, and full industrial temperature support - making it the preferred choice for new designs requiring long-term supply assurance.
Availability
DS1135U-8+ is available at Aetrix Electronics and suitable for industrial automation, test instrumentation, and high-speed data acquisition systems requiring stable component supply, consistent 8 ns delay performance, and long-lifecycle availability.
Supply support for DS1135U-8+ 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, mixed-signal, and timing ICs for industrial, automotive, and communications applications.
The DS1135U-8+ belongs to Maxim's silicon delay line product line, engineered specifically to replace aging discrete or crystal-based delay solutions with monolithic, temperature-stable timing elements for digital signal alignment.
FAQ
What is the guaranteed delay accuracy of DS1135U-8+ over its full operating temperature range?
The DS1135U-8+ guarantees ±1.5 ns delay tolerance over -40°C to +85°C and 4.75–5.25 V supply, as specified in Table 1 of the datasheet. This applies to both tPLH and tPHL for all three outputs. Initial tolerance at +25°C is ±1.0 ns. The DS1135U-8+ achieves this via all-silicon design with matched transistor pairs, eliminating thermal drift mechanisms found in RC or crystal-based alternatives.
Can DS1135U-8+ operate from a 3.3V supply?
No, DS1135U-8+ is specified exclusively for +5V operation (4.75–5.25 V). It is not compatible with 3.3V logic systems. For 3V operation, Maxim recommends the DS1135L family - a separate product variant with different internal biasing and voltage thresholds. Attempting to power DS1135U-8+ from 3.3V will result in undefined timing behavior and potential failure to meet output drive specifications.
Is DS1135U-8+ pin-compatible with DS1013 or DS1035?
Yes, DS1135U-8+ uses the same 8-pin SOIC (150-mil) package and identical pinout as DS1013 and DS1035 - IN1–IN3, OUT1–OUT3, VCC, GND. Maxim explicitly positions DS1135U-8+ as the recommended replacement. No PCB layout changes are required when upgrading from DS1013-8+ or DS1035-8+ to DS1135U-8+, provided the 5V supply and decoupling remain compliant.
What is the maximum input frequency supported by DS1135U-8+?
The DS1135U-8+ does not specify a maximum input frequency directly, but its minimum input pulse width (tWI) is defined as 100% of the tap delay - i.e., ≥8 ns. Given typical rise/fall times of 2.0–2.5 ns, the practical maximum input frequency is ~60 MHz (period ≥16.7 ns). Operation beyond this risks pulse distortion and degraded delay accuracy due to insufficient input slew rate and duty cycle constraints.
Does DS1135U-8+ require external passive components for basic operation?
No, DS1135U-8+ requires only a local 0.1 µF ceramic decoupling capacitor between VCC and GND, placed within 5 mm of the device. No external resistors, capacitors, or trimming components are needed for nominal 8 ns delay operation. All timing is factory-trimmed and monolithically integrated; the DS1135U-8+ functions as a fully self-contained delay element upon power application and stabilization (100 ms).
DS1135U-8+ 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:
- Obsolete
- Number of Taps/Steps:
- -
- Function:
- Multiple, NonProgrammable
- Delay to 1st Tap:
- 8ns
- Tap Increment:
- -
- Available Total Delays:
- 8ns
- Number of Independent Delays:
- 3
- Voltage - Supply:
- 4.75V ~ 5.25V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-uMAX/uSOP
DS1135U-8+ FAQ
1.How can I place an order for DS1135U-8+ through Aetrix?
Please submit a Request for Quotation (RFQ) for DS1135U-8+ 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 DS1135U-8+ reliable?
The price and inventory of DS1135U-8+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DS1135U-8+ is usually 5 days.
3.What payment methods are accepted for DS1135U-8+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS1135U-8+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DS1135U-8+?
DS1135U-8+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DS1135U-8+ 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 DS1135U-8+?
For technical support, including DS1135U-8+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS1135U-8+ requirements.
6.How does Aetrix verify that DS1135U-8+ is sourced from the original manufacturer or authorized distributors?
All DS1135U-8+ 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 DS1135U-8+ meets industry standards.
7.What is the process for return or replacement of DS1135U-8+?
All DS1135U-8+ units undergo pre-shipment inspection (PSI). If there is an issue with DS1135U-8+, 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 DS1135U-8+ part is unused and in its original packaging.
Return procedure for DS1135U-8+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DS1135U-8+ Tags
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