Analog Devices Inc./Maxim Integrated DS1100U-175

Overview

DS1100U-175 from Maxim Integrated is a 5-tap silicon delay line IC delivering precisely spaced delays of 35ns, 70ns, 105ns, 140ns, and 175ns at each tap, operating from a 5V supply with ±4ns delay tolerance over -40°C to +85°C, and capable of driving up to 10 LS-TTL loads per output-used in digital timing alignment, clock deskewing, and pulse-width adjustment circuits.

For engineers reviewing the DS1100U-175 datasheet, DS1100U-175 pinout, DS1100U-175 application, or DS1100U-175 equivalent, key selection considerations include tap delay accuracy across temperature, TTL/CMOS compatibility, µMAX-8 package footprint constraints, and input-to-output edge fidelity for synchronous signal conditioning.

Technical Context

The DS1100U-175 implements an all-silicon delay architecture with fixed, monotonic delay progression across five equally spaced taps-ensuring tPLH and tPHL match within ±4ns over full industrial temperature range. It reproduces both leading and trailing edges with equal precision using internal CMOS timing cells calibrated at 5V.

No internal logic or programmability is present: delay values are hard-coded by fabrication and fully specified in Table 1 of the datasheet; the "-175" suffix explicitly denotes 175ns nominal delay at Tap 5, with all other taps scaled linearly (35ns increments).

Key Specifications

Pinout & Package

DS1100U-175 is housed in an 8-pin µMAX® package (U8+1 outline), 3mm × 3mm body, 0.65mm pitch, exposed pad optional for thermal relief. Pin 1 marked by dot; pin numbering follows standard SO/µMAX convention.

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 footprint efficiency, all-silicon reliability, and ±4ns delay precision-making it optimal for space-constrained industrial controllers and portable test instrumentation requiring field longevity.

Availability

DS1100U-175 is available at Aetrix Electronics and suitable for digital timing alignment, clock deskewing, and pulse-width adjustment applications requiring stable component supply, RoHS-compliant packaging, and industrial temperature support.

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, automotive, and communications applications.

The DS1100 series belongs to Maxim's economy timing element product line, engineered specifically to replace hybrid delay lines with reliable, low-cost, all-silicon alternatives for fixed-delay signal conditioning.

FAQ

What is the nominal delay at Tap 5 for DS1100U-175?

The DS1100U-175 has a nominal delay of 175ns at Tap 5, with corresponding delays of 35ns, 70ns, 105ns, and 140ns at Taps 1 through 4 respectively-all equally spaced at 35ns intervals. This is factory-trimmed and specified in Table 1 of the official DS1100 datasheet. The "-175" suffix directly indicates the Tap 5 delay value.

Does DS1100U-175 support both rising and falling edge delays?

Yes, DS1100U-175 reproduces both leading and trailing edges with equal precision-tPLH and tPHL are matched within ±4ns for delays ≤40ns and ±13% for longer delays. This ensures consistent pulse-width preservation across all five taps, critical for duty-cycle-sensitive timing functions.

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

Each tap of the DS1100U-175 can drive up to 10 74LS logic loads, verified under DC and AC conditions per the datasheet. This corresponds to a guaranteed output sink current of 12mA and source current of -1mA at VCC = 4.75V, enabling direct interfacing without external buffers in most TTL/CMOS systems.

Is DS1100U-175 RoHS-compliant?

Yes, DS1100U-175 is RoHS-compliant and lead(Pb)-free, indicated by the "+" suffix in ordering codes such as DS1100U-175+. It meets JEDEC J-STD-020 reflow standards with a peak temperature of +260°C and is qualified for vapor-phase, IR, and wave soldering processes.

How does DS1100U-175 differ from DS1100Z-175?

DS1100U-175 and DS1100Z-175 share identical electrical specifications and delay values but differ only in package: DS1100U-175 uses the 3mm × 3mm µMAX-8 package, while DS1100Z-175 uses the larger 8-pin SO (150 mil) package. Footprint, thermal characteristics, and assembly process compatibility differ accordingly.