Analog Devices Inc./Maxim Integrated DS1100U-75+

Overview

DS1100U-75+ from Maxim Integrated is a 5-tap silicon delay line in an 8-pin µMAX package, delivering precisely spaced 15ns, 30ns, 45ns, 60ns, and 75ns delays at 5V operation. It reproduces both leading and trailing edges with ±4ns tolerance over –40°C to +85°C, drives up to 10 LS-TTL loads per tap, and serves in digital timing alignment, clock skew correction, and pulse-width adjustment circuits.

For engineers reviewing the DS1100U-75+ datasheet, DS1100U-75+ pinout, DS1100U-75+ application, or DS1100U-75+ equivalent, key selection criteria include tap delay precision across temperature, TTL/CMOS compatibility, low-power CMOS operation, and µMAX footprint suitability for high-density PCB layouts.

Technical Context

The DS1100U-75+ implements an all-silicon delay architecture with fixed, equally spaced taps-no external components or configuration required. Each output replicates the input logic state after its nominal delay, with matched propagation for rising (t_PLH) and falling (t_PHL) edges.

Delay stability is maintained across V_CC = 4.75V–5.25V and full industrial temperature range (–40°C to +85°C), with unidirectional delay drift: all taps speed up or slow down together under voltage or temperature variation-no relative skew between taps.

Key Specifications

Pinout & Package

DS1100U-75+ uses an 8-pin µMAX package (U8+1 outline, 3mm × 3mm, 0.65mm pitch), compatible with vapor-phase, IR, and wave soldering. Pin 1 is V_CC, pin 5 is IN, pins 2/4/6/8 are TAP1–TAP5 (in order), and pin 3 is GND - matching the DS1100U series pin mapping.

Key Features

Applications

Equivalent & Alternatives

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

Compared with DS1000S-75+, DS1100U-75+ offers superior thermal stability and industrial temperature support in a smaller µMAX package; compared with SY100ELT22LZG, it provides five simultaneous, fixed delays without external tuning or differential infrastructure-making it optimal for cost-sensitive, space-constrained, single-ended timing alignment tasks.

Availability

DS1100U-75+ is available at Aetrix Electronics and suitable for digital test equipment, industrial PLC timing modules, FPGA-based prototyping platforms, and automotive body control units requiring stable component supply and long-term lifecycle assurance.

Supply support for DS1100U-75+ 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 solutions for industrial, communications, and computing applications.

The DS1100 series targets cost-sensitive, high-reliability timing functions-replacing hybrid delay lines with all-silicon alternatives for digital synchronization, pulse shaping, and clock alignment in space- and power-constrained systems.

FAQ

What is the operating temperature range for DS1100U-75+?

The DS1100U-75+ is specified for continuous operation from –40°C to +85°C. This industrial temperature range is validated across all electrical parameters-including delay tolerance, supply current, and output drive-ensuring reliable timing alignment in harsh environments such as factory automation controllers and automotive under-hood modules. The device's all-silicon construction contributes to consistent performance across this full range.

Does DS1100U-75+ require external components to operate?

No, DS1100U-75+ is a fully self-contained delay line requiring only a 5V supply and a clean input signal. No external resistors, capacitors, or clocks are needed. A 0.1µF ceramic decoupling capacitor placed near the V_CC pin is recommended to suppress supply noise that could modulate delay accuracy. All five delay taps are available simultaneously without configuration or enable sequencing.

How does DS1100U-75+ handle rising versus falling edges?

DS1100U-75+ guarantees matched delay for both edges: t_PLH (rising) and t_PHL (falling) are equal within ±4ns over the full temperature and voltage range. This symmetry ensures preserved pulse width at every tap output-critical for applications like clock gating, strobe generation, and data eye alignment where duty cycle integrity matters.

Can DS1100U-75+ drive standard TTL logic directly?

Yes, DS1100U-75+ can drive up to 10 LS-TTL loads per tap, verified per its I_OL = 12mA and I_OH = –1mA specifications. Its TTL/CMOS-compatible input accepts standard logic thresholds (V_IL ≤ 0.8V, V_IH ≥ 2.2V), and outputs swing rail-to-rail under load. No level-shifting or buffering is required when interfacing with 74LS, 74F, or modern CMOS families operating at 5V.

Is DS1100U-75+ pin-compatible with other DS1100U variants?

Yes, all DS1100U-x variants-including DS1100U-75+-share identical 8-pin µMAX pinout, supply requirements, and logic interface. Only the nominal delay values differ across the family (e.g., DS1100U-50+ has 10/20/30/40/50ns taps). This allows drop-in replacement during design iteration or production ramp-no PCB changes are needed when selecting different delay steps within the DS1100U series.