Analog Devices Inc./Maxim Integrated DS1100U-60+

Overview

DS1100U-60+ from Maxim Integrated is a 5-tap silicon delay line in an 8-pin µMAX package, delivering precise fixed delays of 12ns, 24ns, 36ns, 48ns, and 60ns per tap at 5V supply. 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-60+ datasheet, DS1100U-60+ pinout, DS1100U-60+ application, or DS1100U-60+ equivalent, key selection criteria include tap delay accuracy across temperature, TTL/CMOS compatibility, low-power CMOS operation, and µMAX package footprint for high-density PCB layouts.

Technical Context

The DS1100U-60+ implements an all-silicon delay architecture with five equally spaced taps derived from a monolithic CMOS timing circuit. Each tap provides deterministic propagation delay referenced to the same input edge, with unidirectional delay variation-i.e., all taps speed up or slow down together under voltage or temperature shifts.

It operates strictly at 5V (4.75V–5.25V), supports 1MHz maximum input frequency, and guarantees stable delay performance without external components. Input-to-output timing is measured at the 1.5V logic threshold, and output drive strength meets LS-TTL loading requirements under specified VCC and temperature conditions.

Key Specifications

Pinout & Package

DS1100U-60+ uses the 8-pin µMAX package (outline U8+1), measuring 3.0mm × 3.0mm × 0.8mm 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-60+, the DS1100U-60+ saves 55% PCB area while maintaining identical delay accuracy and drive capability; versus MC100EP195DG, it offers plug-and-play fixed delays at 5V but lacks differential signaling or sub-ns jitter performance.

Availability

DS1100U-60+ is available at Aetrix Electronics and suitable for industrial control systems, test instrumentation, and embedded timing modules requiring stable component supply, RoHS compliance, and µMAX footprint consistency.

Supply support for DS1100U-60+ 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, with emphasis on reliability and integration.

The DS1100 series belongs to Maxim's economy timing element product line, engineered specifically for cost-sensitive, high-volume digital timing functions where fixed delay accuracy and LS-TTL compatibility outweigh programmability needs.

FAQ

What is the nominal delay value for each tap of the DS1100U-60+?

The DS1100U-60+ provides five fixed delays: TAP 1 = 12ns, TAP 2 = 24ns, TAP 3 = 36ns, TAP 4 = 48ns, and TAP 5 = 60ns. 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 for delays ≤40ns. All taps track identically with temperature and supply voltage changes.

Can the DS1100U-60+ operate at 3.3V?

No, the DS1100U-60+ is designed exclusively for 5V operation (4.75V–5.25V). Its internal CMOS delay circuitry, input thresholds (VIH = 2.2V min, VIL = 0.8V max), and output drive characteristics are specified only within this range. Operation at 3.3V will result in undefined timing behavior, insufficient noise margin, and potential failure to meet LS-TTL load drive specifications.

Is the DS1100U-60+ pin-compatible with other DS1100 variants like DS1100U-50+?

Yes, all DS1100U-x variants share identical 8-pin µMAX pinout and package outline (U8+1), including DS1100U-50+, DS1100U-100+, and DS1100U-60+. The only difference is the nominal delay values per tap, which are determined by the suffix number. No PCB redesign is needed when substituting between DS1100U variants, provided system timing constraints accommodate the new delay profile.

Does the DS1100U-60+ require external bypass capacitors?

Yes, DS1100U-60+ requires a 0.1μF ceramic capacitor placed as close as possible between Pin 1 (VCC) and Pin 8 (GND). This is mandatory to suppress high-frequency supply noise that would otherwise modulate delay accuracy. The datasheet specifies this in the Test Conditions section and notes that improper decoupling causes increased delay variation and degraded edge fidelity.

How does the DS1100U-60+ handle input pulse widths shorter than the minimum specified in the datasheet?

The DS1100U-60+ is characterized for input pulse widths ≥20% of the TAP 5 delay (i.e., ≥12ns for DS1100U-60+). Pulses narrower than this may not propagate reliably to all taps due to internal node settling limitations. For example, a 5ns pulse risks incomplete recognition at later taps (TAP 4/TAP 5), resulting in missing or distorted output transitions. Applications requiring sub-12ns pulses should verify functionality empirically or select a faster variant like DS1100U-20+.