Analog Devices Inc./Maxim Integrated DS1100U-500

Overview

DS1100U-500 from Maxim Integrated is a 5-tap silicon delay line IC providing precisely spaced 100ns, 200ns, 300ns, 400ns, and 500ns delays at each tap under 5V operation. It reproduces both leading and trailing edges with equal precision, drives up to 10 LS-TTL loads per tap, and operates across -40°C to +85°C for industrial timing applications such as clock skew compensation and pulse shaping.

For engineers reviewing the DS1100U-500 datasheet, DS1100U-500 pinout, DS1100U-500 application, or DS1100U-500 equivalent, key selection criteria include tap delay accuracy (±4ns over full temperature range), 5V CMOS/TTL compatibility, µMAX-8 package footprint, low-power active current (30–50mA), and edge-fidelity performance critical in high-speed digital synchronization.

Technical Context

The DS1100U-500 implements an all-silicon delay architecture with five fixed, equally spaced output taps derived from a monolithic CMOS delay chain. Each tap delivers deterministic propagation delay referenced to the 1.5V logic threshold, supporting simultaneous rising- and falling-edge alignment without duty-cycle distortion.

Delay tolerance is specified as ±4ns (for ≤40ns variants) or ±13% (for >40ns variants like DS1100U-500) over -40°C to +85°C and 4.75V–5.25V supply. All taps track unidirectionally with voltage/temperature changes-ensuring monotonic delay variation across the entire 500ns span.

Key Specifications

Pinout & Package

The DS1100U-500 is housed in an 8-pin µMAX® package (package code U8+1, outline 21-0036), measuring 3mm × 3mm × 0.8mm with exposed pad for thermal enhancement and RoHS-compliant lead-free finish.

Key Features

Applications

Equivalent & Alternatives

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

Compared with DS1100Z-500 and MC100EP195M, the DS1100U-500 uniquely combines µMAX-8 miniaturization, single 5V supply operation, and guaranteed edge-aligned delay accuracy-making it optimal for space-constrained, cost-sensitive industrial timing where LS-TTL interfacing is mandatory.

Availability

DS1100U-500 is available at Aetrix Electronics and suitable for digital test fixtures, industrial motor controllers, FPGA clock management, and high-reliability embedded timing applications requiring stable component supply and long-lifecycle support.

Supply support for DS1100U-500 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) is a semiconductor company specializing in precision analog, mixed-signal, and high-reliability timing solutions for industrial, automotive, and communications markets.

The DS1100 series belongs to Maxim's economy timing element product line, designed specifically to replace hybrid delay lines with fully silicon-based, surface-mount alternatives offering superior reliability and PCB area savings.

FAQ

What is the operating temperature range for the DS1100U-500?

The DS1100U-500 is rated for continuous operation from -40°C to +85°C. All nominal tap delays (100ns to 500ns) and delay tolerances (±13%) are guaranteed across this full industrial temperature range when supplied with 4.75V–5.25V. This makes the DS1100U-500 suitable for deployment in harsh environments such as factory automation controllers and outdoor telecom equipment where ambient temperatures fluctuate widely.

Does the DS1100U-500 require external decoupling capacitors?

Yes, the DS1100U-500 requires a minimum 0.1µF ceramic decoupling capacitor placed as close as possible to the VCC and GND pins. Stable delay accuracy-especially the ±13% tolerance over temperature-depends on clean, low-impedance 5V supply delivery. Layout best practices also recommend a solid ground plane beneath the µMAX-8 package and short, direct traces to minimize noise coupling into the delay path of the DS1100U-500.

Can the DS1100U-500 drive standard 74LS logic inputs directly?

Yes, each tap of the DS1100U-500 can drive up to 10 standard 74LS logic inputs without external buffering. Its output drive strength meets IOL ≥12mA and IOH ≥–1mA at VOL = 0.5V and VOH = 4.0V under minimum VCC (4.75V), satisfying LS-TTL loading requirements. This capability allows direct connection to legacy logic families in industrial control panels and instrumentation systems using the DS1100U-500.

How does delay tolerance scale with nominal delay value in the DS1100U-500?

For the DS1100U-500 (500ns nominal), delay tolerance is specified as ±13% over –40°C to +85°C and 4.75V–5.25V. This differs from shorter-delay variants (e.g., DS1100U-40, ±4ns), because Maxim applies percentage-based tolerance for delays >40ns to reflect proportional process and temperature sensitivity. Thus, the absolute worst-case deviation for DS1100U-500 is ±65ns-still sufficient for most industrial pulse-shaping and clock deskewing tasks.

Is the DS1100U-500 pin-compatible with other DS1100 variants?

Yes, all DS1100U-x variants-including DS1100U-500-share identical 8-pin µMAX package pinout, electrical interface, and functional behavior. Only the nominal delay values differ across the family. This allows drop-in replacement during prototyping or production ramp when different delay spans are evaluated, provided system timing margins accommodate the new tap values. The DS1100U-500 retains full compatibility with existing DS1100U footprint layouts and driver firmware.