Analog Devices Inc./Maxim Integrated DS1100U-300/T&R

Overview

DS1100U-300/T&R from Maxim Integrated is a 5-tap silicon delay line in an 8-pin µMAX package, delivering precisely spaced delays of 60ns, 120ns, 180ns, 240ns, and 300ns at 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 in digital timing alignment, pulse shaping, and clock skew correction circuits.

For engineers reviewing the DS1100U-300/T&R datasheet, DS1100U-300/T&R pinout, DS1100U-300/T&R application, or DS1100U-300/T&R equivalent, key selection criteria include tap delay precision across temperature, TTL/CMOS compatibility, low-power CMOS operation, solderability (vapor-phase, IR, wave), and industrial-grade reliability in space-constrained PCB layouts.

Technical Context

The DS1100U-300/T&R implements a monolithic all-silicon delay architecture with five fixed, equally spaced output taps referenced to a single input signal. Each tap delivers deterministic propagation delay with matched edge fidelity-tPLH and tPHL specified separately and tracked unidirectionally under voltage and temperature variation.

It operates exclusively at 5V (4.75V–5.25V), requires no external components, and achieves stable timing without trimming or calibration. Input-to-tap delay tolerance is ±4ns for the 300ns tap over full industrial temperature range, with power-up time under 200μs and input capacitance ≤10pF.

Key Specifications

Pinout & Package

DS1100U-300/T&R is housed in an 8-pin µMAX package (outline U8+1, 3mm × 3mm, 0.65mm pitch), optimized for high-density surface-mount assembly and reflow-compatible with lead-free and SnPb processes.

Key Features

Applications

Equivalent & Alternatives

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

Compared with DS1100Z-300/T&R, DS1100U-300/T&R saves >60% PCB area and improves thermal response; compared with DS1000S-300, it delivers 2.5× tighter delay tolerance, full industrial temperature support, and monolithic reliability-making it the sole choice for precision, high-reliability timing alignment.

Availability

DS1100U-300/T&R is available at Aetrix Electronics and suitable for industrial automation, test instrumentation, and legacy bus interface designs requiring stable component supply, long-lifecycle availability, and RoHS-compliant packaging.

Supply support for DS1100U-300/T&R 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 precision analog, mixed-signal, and high-reliability timing solutions for industrial, medical, and communications systems.

The DS1100 series belongs to Maxim's economy timing element product line, designed specifically to replace hybrid delay lines with monolithic silicon alternatives offering superior stability, smaller footprint, and simplified manufacturing integration.

FAQ

What is the nominal delay value for each tap of the DS1100U-300/T&R?

The DS1100U-300/T&R provides five equally spaced delays: TAP 1 = 60ns, TAP 2 = 120ns, TAP 3 = 180ns, TAP 4 = 240ns, and TAP 5 = 300ns. These values are fixed and factory-trimmed; they reflect the total delay from input to that specific tap under 5V and +25°C conditions, with tolerance tightening to ±4ns for TAP 5 across the full -40°C to +85°C range. DS1100U-300/T&R does not support programmable or adjustable delay intervals.

Is the DS1100U-300/T&R compatible with 3.3V logic systems?

No, DS1100U-300/T&R is specified only for 5V operation (4.75V–5.25V). Its input thresholds (VIH ≥2.2V, VIL ≤0.8V) and output drive levels are optimized for TTL/CMOS 5V families. Connecting it to a 3.3V system without level translation risks unreliable switching, increased noise susceptibility, and potential damage due to VIH exceeding 3.3V logic high. DS1100U-300/T&R must be used in 5V domains or paired with bidirectional level shifters.

Does the DS1100U-300/T&R require external decoupling capacitors?

Yes, DS1100U-300/T&R requires a 0.1μF ceramic capacitor placed as close as possible between VCC (pin 8) and GND (pin 7). This decoupling is mandatory to suppress supply transients induced by simultaneous tap switching, prevent output jitter, and maintain delay stability. Without it, DS1100U-300/T&R may exhibit timing variation exceeding ±10ns and elevated ICC during fast transitions-violating AC specifications in the datasheet.

Can multiple taps of the DS1100U-300/T&R drive separate loads simultaneously?

Yes, each tap of DS1100U-300/T&R can independently drive up to 10 LS-TTL loads (or equivalent 74F/74AS fanout) without performance degradation. The outputs are electrically isolated and do not share current paths; therefore, loading one tap has no measurable effect on delay accuracy or edge fidelity of others. However, total ICC increases linearly with active tap count-e.g., driving all five taps at 1MHz raises supply current to ~250mA, requiring appropriate power delivery design for DS1100U-300/T&R.

What is the meaning of "/T&R" in DS1100U-300/T&R?

The "/T&R" suffix in DS1100U-300/T&R indicates tape-and-reel packaging: the devices are supplied in industry-standard embossed plastic carrier tape, sealed with cover tape, and wound on reels (typically 2500 units/reel for µMAX packages). This format is required for automated SMT placement and ensures ESD-safe handling, moisture sensitivity compliance (MSL 1), and traceable lot control. DS1100U-300/T&R is not available in tube or tray formats from Maxim or authorized distributors.