Analog Devices Inc./Maxim Integrated DS1100U-175+

Overview

DS1100U-175+ from Maxim Integrated is a 5-tap silicon delay line in an 8-pin µMAX package, delivering precisely spaced delays of 35ns, 70ns, 105ns, 140ns, and 175ns at each tap under 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 as a low-power, RoHS-compliant replacement for hybrid delay lines in timing-critical digital synchronization circuits.

For engineers reviewing the DS1100U-175+ datasheet, DS1100U-175+ pinout, DS1100U-175+ application, or DS1100U-175+ equivalent, key selection criteria include tap delay accuracy across temperature, TTL/CMOS compatibility, 5V supply stability, and µMAX footprint constraints in high-density PCB layouts.

Technical Context

The DS1100U-175+ implements an all-silicon delay architecture with fixed, equally spaced propagation paths-no PLL, oscillator, or programmable logic. Each of its five taps provides deterministic, monotonic delay variation with temperature and supply voltage, ensuring correlated skew behavior across all outputs.

It operates exclusively at 5V (4.75V–5.25V), accepts standard TTL/CMOS input levels, and guarantees sub-nanosecond edge alignment fidelity between input and all five delayed outputs-critical for clock deskewing, pulse shaping, and signal alignment in high-speed digital systems.

Key Specifications

Pinout & Package

DS1100U-175+ uses an 8-pin µMAX package (U8+1 outline, 3mm × 3mm body, 0.65mm pitch), 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-175+ and DS1000S-175+, the DS1100U-175+ uniquely combines µMAX space savings, ±4ns industrial-grade delay accuracy, and all-silicon reliability-making it optimal for new designs requiring compact, high-fidelity timing alignment.

Availability

DS1100U-175+ is available at Aetrix Electronics and suitable for digital clock deskewing, pulse width adjustment, and logic signal alignment requiring stable component supply, consistent delay performance, and RoHS-compliant packaging.

Supply support for DS1100U-175+ 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, communications, and computing applications, emphasizing reliability, integration, and performance.

The DS1100 series targets timing-critical digital systems needing deterministic, low-jitter delay elements-replacing hybrid solutions with monolithic silicon for improved yield, thermal stability, and manufacturability.

FAQ

What is the nominal delay value for each tap of the DS1100U-175+?

The DS1100U-175+ provides five equally spaced nominal delays: TAP 1 = 35ns, TAP 2 = 70ns, TAP 3 = 105ns, TAP 4 = 140ns, and TAP 5 = 175ns. These values are specified at +25°C and 5V, with ±4ns tolerance over the full -40°C to +85°C operating range. All delays are measured at the 1.5V crossing point on input and output edges.

Is the DS1100U-175+ compatible with 3.3V logic systems?

No, the DS1100U-175+ is designed exclusively for 5V operation (4.75V–5.25V). Its input thresholds (VIH ≥2.2V, VIL ≤0.8V) and output drive strength assume a 5V rail. Interfacing with 3.3V systems requires level translation; direct connection may result in undefined logic states or excessive input current.

Does the DS1100U-175+ require external decoupling capacitors?

Yes, DS1100U-175+ requires a 0.1μF ceramic capacitor placed as close as possible between Pin 1 (VCC) and Pin 8 (GND). This minimizes supply noise-induced jitter and ensures stable delay performance, especially under fast-switching conditions. Additional bulk capacitance may be needed depending on PCB layout and system load.

Can the DS1100U-175+ reproduce both rising and falling edges with equal precision?

Yes, the DS1100U-175+ is specifically characterized for both leading-edge (tPLH) and trailing-edge (tPHL) delay accuracy, with matched ±4ns tolerance over temperature. This ensures pulse width integrity is preserved across all five taps-critical for applications like pulse shaping and timing calibration where duty cycle fidelity matters.

What is the maximum capacitive load the DS1100U-175+ can drive per tap?

The DS1100U-175+ is rated to drive up to 10 LS-TTL loads per tap (equivalent to ~10 × 20pF + 400Ω). Driving heavier loads increases propagation delay uncertainty and may degrade edge fidelity. For >10 LS loads or transmission-line routing, use a buffer such as SN74LVC1G07 between DS1100U-175+ outputs and the destination.