Analog Devices Inc./Maxim Integrated DS1035Z-15

Overview

DS1035Z-15 from Dallas Semiconductor (now Maxim Integrated) is a +5V, 3-channel all-silicon delay line IC with precise 15 ns nominal delay per output, ±1.5 ns initial tolerance, and ±1.5 ns additional variation over 0°C to 70°C and 4.75–5.25 V supply. It preserves input signal symmetry via leading/trailing edge accuracy and drives up to 10 LS-TTL loads. Used in high-speed digital timing alignment, clock deskewing, and pulse-width stabilization.

For engineers reviewing the DS1035Z-15 datasheet, DS1035Z-15 pinout, DS1035Z-15 application, or DS1035Z-15 equivalent, key selection factors include guaranteed 15 ns delay matching across all three outputs, SOIC-8 (150-mil) package compatibility, 2.5 ns max output rise/fall time, and operation within commercial temperature and voltage ranges without external components.

Technical Context

The DS1035Z-15 implements three independent, buffered, fixed-delay paths in a single monolithic silicon structure-no external capacitors or resistors required. Each channel delivers identical 15 ns propagation delay (tPLH/tPHL) with matched leading and trailing edge precision, enabling deterministic timing control in synchronous logic systems.

It operates strictly at +5 V (4.75–5.25 V), draws ≤35 mA active current, and maintains delay stability under load due to its internal logic-buffered outputs capable of sourcing –1 mA and sinking 12 mA. Input thresholds comply with TTL levels (VIH ≥ 2.2 V, VIL ≤ 0.8 V), ensuring direct interfacing with standard 5V logic families.

Key Specifications

Pinout & Package

DS1035Z-15 is housed in an 8-pin SOIC package (150-mil width), pin-compatible with industry-standard 8-pin SOIC footprints. The substrate pin (Sub) is internally connected and must remain unconnected externally.

Key Features

Applications

Equivalent & Alternatives

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

Compared with DS1035M-15 and MAX962-15, the DS1035Z-15 offers the tightest combined delay tolerance (±3.0 ns total), lowest power consumption, and smallest footprint - making it optimal for space-constrained, high-reliability 5V digital systems requiring deterministic multi-channel delay.

Availability

DS1035Z-15 is available at Aetrix Electronics and suitable for high-speed logic deskewing, programmable logic timing calibration, and digital pulse width stabilization requiring stable component supply across industrial and embedded production cycles.

Supply support for DS1035Z-15 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

Dallas Semiconductor, acquired by Maxim Integrated in 2001, specialized in precision analog, timing, and mixed-signal ICs for industrial and communications infrastructure.

The DS1035 series was designed specifically for deterministic, multi-channel digital timing alignment in 5V TTL/LS-TTL systems - delivering factory-trimmed, temperature-stable delay without external components.

FAQ

What is the guaranteed delay matching between OUT1, OUT2, and OUT3 on the DS1035Z-15?

The DS1035Z-15 guarantees identical 15 ns nominal delay (tPLH/tPHL) on all three outputs with ±1.5 ns initial tolerance and ±1.5 ns additional variation over temperature and voltage. This results in ≤3.0 ns maximum inter-output skew under worst-case conditions - verified per Table 1 and Figure 1 in the official datasheet.

Can the DS1035Z-15 operate from a 3.3 V supply?

No. The DS1035Z-15 is specified exclusively for +5 V operation (4.75–5.25 V). It is not compatible with 3.3 V logic families. For 3.3 V systems, consider the pin-compatible DS1033-15, which shares the same delay accuracy and SOIC-8 package but is rated for 3.3 V supply.

Is the Sub pin on the DS1035Z-15 required to be connected to ground?

No. The Sub pin is an internal substrate connection with no external function. Dallas Semiconductor explicitly states "do not make any external connections to these pins." Leaving Sub unconnected is mandatory - grounding or tying it to VCC/GND will compromise device reliability and void specifications.

Does the DS1035Z-15 require external decoupling capacitors?

Yes. A 0.1 µF ceramic capacitor must be placed as close as possible between VCC and GND pins to suppress high-frequency supply noise. The DS1035Z-15's fast 2.5 ns output transitions generate significant transient current; omitting decoupling risks timing jitter and output instability per Section 4 of the datasheet.

What is the maximum input frequency supported by the DS1035Z-15?

The DS1035Z-15 supports input pulse periods down to 2× the tap delay (i.e., ≥30 ns period), corresponding to a maximum fundamental frequency of ~33 MHz. However, reliable operation at higher rates (up to 100 MHz) is achievable with sufficient input pulse width (>15 ns) and proper termination, as confirmed by the tWI specification in AC Electrical Characteristics.