Analog Devices Inc./Maxim Integrated DS1135U-30+T&R

Overview

DS1135U-30+T&R from Maxim Integrated is a +5V, 3-channel all-silicon delay line with precise 30ns per-output propagation delay (tPLH/tPHL), ±1.5ns initial tolerance, and ±2ns tolerance over -40°C to +85°C. It delivers leading/trailing edge accuracy while preserving input signal symmetry and drives up to 10 LS loads per output. Used in high-speed digital timing alignment for FPGA clock deskew and test instrumentation.

For engineers reviewing the DS1135U-30+T&R datasheet, DS1135U-30+T&R pinout, DS1135U-30+T&R application, or DS1135U-30+T&R equivalent, key selection criteria include guaranteed 30ns delay stability across voltage (4.75–5.25V) and temperature, SOIC-8 package compatibility, and direct replacement capability for legacy DS1013/DS1035 designs requiring improved edge fidelity.

Technical Context

The DS1135U-30+T&R implements three independent buffered delay paths in a single silicon die, each delivering identical 30ns nominal tPLH and tPHL with matched rise/fall time (2.0–2.5ns). Its logic-level input/output architecture operates strictly at +5V with VIH ≥ 2.2V and VIL ≤ 0.8V.

It features no internal PLL or feedback-delay is fixed and passive-silicon-based-enabling deterministic, jitter-free propagation without lock time or frequency dependency. Power-up stabilization completes within 100ms, and input capacitance is specified at 10pF.

Key Specifications

Pinout & Package

DS1135U-30+T&R is housed in an 8-pin SOIC (150-mil) package with gull-wing leads, RoHS-compliant, and compatible with vapor phase, IR, and wave soldering processes.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar delay line applications.

Compared with DS1135Z-30+ and DS1013-30+, the DS1135U-30+T&R provides tighter delay tolerance (±2ns vs ±5ns), lower power (35mA vs 50mA), and superior edge symmetry - making it optimal for industrial-grade timing-critical systems demanding long-term stability.

Availability

DS1135U-30+T&R is available at Aetrix Electronics and suitable for high-speed test instrumentation, FPGA clock deskew, and industrial control logic timing requiring stable component supply across extended temperature ranges.

Supply support for DS1135U-30+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, now part of Analog Devices, designs precision analog and mixed-signal ICs for industrial, automotive, and communications applications.

The DS1135U-30+T&R belongs to Maxim's silicon delay line product line, engineered specifically for deterministic, low-jitter digital timing alignment in systems where quartz-based solutions introduce unacceptable startup delay or temperature drift.

FAQ

What is the guaranteed delay accuracy of DS1135U-30+T&R over its full operating temperature range?

The DS1135U-30+T&R guarantees ±2ns delay tolerance (tPLH/tPHL) across -40°C to +85°C and supply voltage 4.75V to 5.25V. This specification ensures that all three outputs maintain 30ns ±2ns delay under worst-case industrial conditions, enabling robust timing budgeting without derating.

Does DS1135U-30+T&R require external configuration or programming to achieve its 30ns delay?

No, DS1135U-30+T&R is a fixed-delay device with no configuration interface. Its 30ns per-output delay is implemented in all-silicon circuitry and is factory-trimmed - no external components, clocks, or firmware are needed. The DS1135U-30+T&R delivers deterministic timing immediately upon power-up.

Can DS1135U-30+T&R replace DS1013-30+ in existing designs without PCB changes?

Yes, DS1135U-30+T&R uses the same 8-pin SOIC (150-mil) footprint and pinout as DS1013-30+, enabling drop-in replacement. However, verify decoupling and load conditions: DS1135U-30+T&R draws less current (35mA vs 50mA) and has faster edges, which may reduce noise sensitivity in some layouts.

What is the maximum input pulse width supported by DS1135U-30+T&R?

The DS1135U-30+T&R requires input pulse width (tWI) to be at least 100% of the tap delay - i.e., ≥30ns - to ensure accurate delay replication. Shorter pulses may cause incomplete propagation or edge distortion. Pulse period must be ≥2×tWI (≥60ns) for reliable operation.

Is DS1135U-30+T&R compatible with 3.3V logic families?

No, DS1135U-30+T&R is a +5V-only device with VIH ≥ 2.2V and VIL ≤ 0.8V. It is not 3.3V-tolerant. For 3V operation, use the DS1135L family (e.g., DS1135L-30+); the DS1135U-30+T&R must be interfaced via level-shifting or used exclusively in 5V logic domains.