Analog Devices Inc./Maxim Integrated DS1100Z-20+T

Overview

DS1100Z-20+T from Maxim Integrated is a 5-tap silicon delay line IC with fixed nominal delays of 4ns, 8ns, 12ns, 16ns, and 20ns across taps; operates at 5V ±5%, supports -40°C to +85°C industrial temperature range, and drives up to 10 LS-TTL loads per tap. It reproduces both leading and trailing edges with equal precision for timing alignment in digital signal path synchronization.

For engineers reviewing the DS1100Z-20+T datasheet, DS1100Z-20+T pinout, DS1100Z-20+T application, or DS1100Z-20+T equivalent, key selection considerations include tap delay accuracy (±4ns over full temperature range), SO-8 package compatibility, TTL/CMOS logic interface, low-power CMOS operation, and edge-fidelity requirements in pulse-shaping and clock deskew circuits.

Technical Context

The DS1100Z-20+T implements an all-silicon delay architecture with five equally spaced, fixed-delay output taps referenced to a single input. Each tap delivers deterministic propagation delay with matched tPLH/tPHL characteristics and unidirectional temperature/voltage drift behavior - if one tap slows, all slow proportionally.

It functions as a passive timing element: no internal clock, no configuration registers, no enable/disable control. Delay values are factory-trimmed and specified at 1.5V switching threshold; input rise/fall times ≤3.0ns (20%–80%) and pulse width ≥500ns ensure stable tap output generation under defined test conditions.

Key Specifications

Pinout & Package

DS1100Z-20+T is housed in an 8-pin SOIC (150-mil width) package, RoHS-compliant and tape-and-reel ready (T&R suffix). Pinout follows standard DS1100 layout with dual-side I/O distribution.

Key Features

Applications

Equivalent & Alternatives

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

Compared with DS1100Z-25+T, DS1100Z-20+T offers finer 4ns tap resolution ideal for tight-margin pulse alignment; versus DS1100U-20+T, it trades compactness for SO-8 manufacturability and thermal mass - critical for high-reliability industrial reflow profiles.

Availability

DS1100Z-20+T is available at Aetrix Electronics and suitable for industrial control systems, test instrumentation, and legacy electronics repair requiring stable component supply and long-lifecycle support.

Supply support for DS1100Z-20+T 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 analog, mixed-signal, and high-reliability timing solutions for industrial, communications, and computing markets.

The DS1100 series was designed as a silicon-based replacement for hybrid delay lines - targeting applications needing deterministic, low-jitter, fixed delays with robust solderability and extended temperature operation.

FAQ

What is the nominal delay value for each tap of the DS1100Z-20+T?

The DS1100Z-20+T provides five fixed nominal delays: TAP 1 = 4ns, TAP 2 = 8ns, TAP 3 = 12ns, TAP 4 = 16ns, and TAP 5 = 20ns. These values are factory-trimmed and specified at +25°C and 5V, with ±4ns tolerance over the full -40°C to +85°C operating range. Each tap reproduces both rising and falling edges with matched delay characteristics.

Does the DS1100Z-20+T require external configuration or clock input?

No, the DS1100Z-20+T is a fully passive delay element with no configuration interface, internal oscillator, or clock input. It operates synchronously with the applied input signal: any logic transition at the IN pin propagates through the silicon delay path and appears at each tap after its respective fixed delay. No power-up initialization or register programming is needed.

Can the DS1100Z-20+T drive standard TTL loads directly?

Yes, the DS1100Z-20+T can drive up to 10 LS-TTL loads per tap, as confirmed by its IOL = 12mA and IOH = -1mA specifications at VCC = 4.75V. Its output voltage thresholds (VIH ≥2.2V, VIL ≤0.8V) and drive strength meet TTL interface requirements without external buffers, making it suitable for direct connection to 74LS-series inputs in industrial control and instrumentation designs.

Is the DS1100Z-20+T RoHS-compliant and compatible with lead-free reflow?

Yes, the "+T" suffix in DS1100Z-20+T indicates a lead(Pb)-free, RoHS-compliant SO-8 package rated for lead-free reflow up to +260°C. The device meets JEDEC J-STD-020 moisture sensitivity level (MSL) requirements for standard surface-mount assembly and supports vapor-phase, IR, and wave soldering processes without performance degradation.

How does temperature variation affect delay matching between taps in the DS1100Z-20+T?

Temperature changes cause unidirectional delay drift across all taps - if TAP 1 slows, TAP 2–5 slow proportionally. This preserves inter-tap spacing accuracy (e.g., TAP 2 – TAP 1 remains ~4ns across temperature), ensuring stable relative timing for applications like deskewing or pulse interpolation. Full-range delay tolerance is ±4ns, verified per Maxim's AC Electrical Characteristics table.