Analog Devices Inc./Maxim Integrated DS1100Z-250

Overview

DS1100Z-250 from Maxim Integrated is a 5-tap silicon delay line delivering precisely spaced 50ns, 100ns, 150ns, 200ns, and 250ns delays at 5V supply, with ±4ns tolerance over -40°C to +85°C, TTL/CMOS-compatible outputs, and capability to drive up to 10 × 74LS loads per tap - used in digital timing alignment, pulse shaping, and clock deskewing circuits.

For engineers reviewing the DS1100Z-250 datasheet, DS1100Z-250 pinout, DS1100Z-250 application, or DS1100Z-250 equivalent, key selection considerations include tap spacing accuracy, leading/trailing edge matching, industrial temperature operation, SO-8 package compatibility, and load-driving capability for legacy logic interfacing.

Technical Context

The DS1100Z-250 implements an all-silicon delay architecture with fixed, monotonic delay progression across five taps - all delays scale uniformly with voltage and temperature changes, ensuring consistent inter-tap spacing. Each output reproduces both rising and falling edges with matched propagation delay (tPLH/tPHL), enabling precise edge-aligned signal replication without duty-cycle distortion.

It operates exclusively at 5V (4.75V–5.25V), draws ≤50mA active current, and supports standard reflow soldering including lead-free processes. Input pulse width must exceed 20% of Tap 5 delay (≥50ns), and timing is measured at 1.5V thresholds with 50Ω source impedance and ≤3ns input rise/fall times.

Key Specifications

Pinout & Package

DS1100Z-250 is housed in an 8-pin SOIC (150-mil) package, RoHS-compliant (indicated by "+" suffix variants), with standard JEDEC MS-012AC outline and 90-0096 land pattern.

Key Features

Applications

Equivalent & Alternatives

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

Compared with DS1000-250 and MAX5002ESE+, the DS1100Z-250 offers superior industrial temperature support, lower cost, and zero-config fixed delay - making it optimal for static timing correction in volume production where simplicity and reliability outweigh programmability.

Availability

DS1100Z-250 is available at Aetrix Electronics and suitable for digital test equipment, industrial control I/O timing, legacy logic interfacing, and oscilloscope trigger subsystems requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for DS1100Z-250 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, automotive, and communications applications.

The DS1100 series was developed as a low-cost, high-reliability silicon replacement for hybrid delay lines - targeting fixed-timing applications in legacy system upgrades and test instrumentation where predictability and solderability are critical.

FAQ

What is the operating temperature range for DS1100Z-250?

The DS1100Z-250 is rated for continuous operation from -40°C to +85°C. This industrial-grade temperature specification is confirmed in the Absolute Maximum Ratings and DC/AC Electrical Characteristics tables of the official datasheet, and applies to all five taps under 4.75V–5.25V supply conditions. The device maintains its ±13% delay tolerance across this full range, making DS1100Z-250 suitable for deployment in harsh-environment control systems without derating.

Does DS1100Z-250 support both rising and falling edge delays with equal accuracy?

Yes, DS1100Z-250 is explicitly designed to reproduce both leading and trailing edges with equal precision. The datasheet specifies matched tPLH (rising) and tPHL (falling) delays for all taps, with identical tolerance bands (±4ns for short delays, ±13% for longer ones). This edge-matching behavior is verified in the Timing Diagram (Figure 2) and AC Electrical Characteristics table, ensuring pulse-width integrity across all five outputs - a key differentiator from earlier hybrid delay lines.

Can DS1100Z-250 drive modern logic families like 74LVC or 74AHC?

DS1100Z-250 outputs are TTL/CMOS-compatible and can drive 74LVC and 74AHC inputs, but with voltage-level constraints. Its VOH min is 4.0V at -1mA and VOL max is 0.5V at 12mA, meeting 74LVC thresholds (VIH ≥2.0V, VIL ≤0.8V) and 74AHC (VIH ≥3.15V, VIL ≤1.35V) under typical loading. However, fanout is reduced compared to 74LS: DS1100Z-250 reliably drives ~6–8 units of 74LVC1G04 rather than 10 × 74LS, due to higher input capacitance.

Is DS1100Z-250 pin-compatible with other DS1100 variants like DS1100Z-100 or DS1100U-250?

DS1100Z-250 shares identical pinout and electrical behavior with all DS1100Z-xxx variants in SO-8 packaging, including DS1100Z-100. It is not pin-compatible with DS1100U-250, which uses the 8-pin µMAX package (U8+1 outline) with different physical pin mapping. Both Z and U versions maintain functional equivalence and identical delay specifications, but require separate PCB footprints - DS1100Z-250 must be placed in the S8+4 SOIC land pattern (90-0096).

What is the maximum input frequency supported by DS1100Z-250?

The DS1100Z-250 does not specify a maximum input frequency, but imposes a minimum input pulse width requirement: tWI ≥20% of Tap 5 delay = 50ns. Therefore, the practical maximum repetition rate is ≤10MHz (100ns period). At higher frequencies, delay accuracy degrades due to input slew rate limitations and internal node charging effects, as noted in datasheet Note 9. For reliable operation, DS1100Z-250 should be used with input periods ≥2× the longest tap delay (i.e., ≥500ns).