Analog Devices Inc./Maxim Integrated DS1135U-6+T&R

Overview

DS1135U-6+T&R from Maxim Integrated is a high-speed, all-silicon 3-in-1 delay line operating at +5V with three independent buffered outputs, each delivering precisely matched 6 ns propagation delay (tPLH/tPHL), ±1.0 ns initial tolerance, and ±1.5 ns variation over -40°C to +85°C. It replaces DS1013/DS1035 in clock skew management and digital timing alignment circuits.

For engineers reviewing the DS1135U-6+T&R datasheet, DS1135U-6+T&R pinout, DS1135U-6+T&R application, or DS1135U-6+T&R equivalent, key selection criteria include guaranteed edge-aligned delay accuracy, LS-TTL load drive capability (10 loads per output), SOIC-8 packaging, and industrial temperature support without external compensation.

Technical Context

The DS1135U-6+T&R implements three identical, fully buffered delay paths with matched tPLH and tPHL characteristics-ensuring input signal symmetry preservation across leading and trailing edges. Each path operates with 2.0–2.5 ns output rise/fall times and supports input pulse widths ≥100% of tap delay (i.e., ≥6 ns).

It functions as a fixed-delay timing element-not programmable or adjustable-with DC supply requirements of 4.75 V to 5.25 V and active current draw ≤35 mA at 1 µs period. Power-up stabilization completes within 100 ms, and input capacitance is 10 pF.

Key Specifications

Pinout & Package

DS1135U-6+T&R 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.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar fixed-delay timing applications.

Compared with DS1135Z-6+, DS1135U-6+T&R provides identical electrical performance in optimized tape-and-reel form for production; compared with DS1013-6+, it delivers 42% lower active current, 2× tighter delay tolerance, and full industrial temperature support-making it the preferred choice for modern embedded timing.

Availability

DS1135U-6+T&R is available at Aetrix Electronics and suitable for high-speed clock distribution, digital signal skew compensation, and TTL-compatible test fixture timing requiring stable component supply and guaranteed nanosecond-level delay accuracy.

Supply support for DS1135U-6+T&R 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 designs precision analog and mixed-signal ICs for industrial, communications, computing, and consumer applications.

The DS1135U-6+T&R belongs to Maxim's silicon delay line product line, engineered specifically for deterministic, low-drift timing alignment in digital systems where quartz-based or RC solutions lack repeatability or stability.

FAQ

What is the exact delay value and tolerance of DS1135U-6+T&R?

The DS1135U-6+T&R delivers a nominal 6 ns propagation delay (tPLH and tPHL) on each of its three outputs. Initial tolerance is ±1.0 ns at +25°C and 5.0 V. Over the full industrial temperature range (-40°C to +85°C) and supply voltage (4.75 V to 5.25 V), delay variation is guaranteed within ±1.5 ns. This is confirmed in Table 1 of the official Maxim datasheet.

Is DS1135U-6+T&R pin-compatible with DS1013 or DS1035?

Yes, DS1135U-6+T&R is a recommended replacement for DS1013 and DS1035 and shares the same 8-pin SOIC (150-mil) footprint and pin assignment: IN1–IN3, OUT1–OUT3, VCC, and GND. However, DS1135U-6+T&R uses all-silicon design versus bipolar in DS1013, resulting in lower power and improved thermal stability-no PCB changes are required for drop-in replacement.

Can DS1135U-6+T&R operate at 3.3 V?

No, DS1135U-6+T&R is specified exclusively for +5 V operation (4.75 V to 5.25 V). For 3 V systems, Maxim offers the DS1135L family. Attempting to power DS1135U-6+T&R at 3.3 V will result in undefined behavior, failure to meet delay specifications, or non-functional outputs per the Absolute Maximum Ratings and DC Electrical Characteristics sections.

What load can each output of DS1135U-6+T&R drive?

Each output of DS1135U-6+T&R is rated to drive up to 10 LS-TTL loads, equivalent to one 74F04 input gate per load. The device specifies 12 mA sink current and -1.0 mA source current under defined conditions. Driving heavier capacitive or current loads may degrade delay accuracy and edge fidelity, as verified in the AC Electrical Characteristics table.

Does DS1135U-6+T&R require external components for stable operation?

DS1135U-6+T&R requires only a 0.1 µF ceramic decoupling capacitor placed as close as possible to the VCC–GND pins. No external resistors, capacitors, or trimming components are needed-the delay is factory-trimmed and fully self-contained. This simplifies layout and eliminates drift sources associated with external RC networks.