Analog Devices Inc./Maxim Integrated DS1004Z-4+

Overview

DS1004Z-4+ from Analog Devices (formerly Dallas Semiconductor) is a 5-tap all-silicon delay line providing precise, temperature-stable tap-to-tap delays of 4 ns with ±1.0 ns nominal tolerance and ±1.75 ns over temperature/voltage. It delivers input-to-tap1 delay of 5 ns, supports CMOS/TTL logic levels, and drives up to 10 LS loads - used in high-speed digital timing alignment, clock deskewing, and pulse shaping circuits.

For engineers reviewing the DS1004Z-4+ datasheet, DS1004Z-4+ pinout, DS1004Z-4+ application, or DS1004Z-4+ equivalent, key selection criteria include tap delay accuracy, edge symmetry preservation, input-to-output delay stability across 0°C to +70°C, and compatibility with standard 150-mil 8-pin SOIC PCB layouts.

Technical Context

The DS1004Z-4+ implements a monolithic silicon delay architecture with five buffered output taps, each precisely offset from the previous by 4 ns (nominal), with leading and trailing edge delays matched to preserve input signal symmetry. Input-to-tap1 delay is fixed at 5 ns, and all outputs maintain consistent rise/fall times ≤2.5 ns under 15 pF load.

It operates from a single +5.0 V ±5% supply, draws 35–75 mA active current, and guarantees delay accuracy within ±1.5 ns input-to-tap tolerance over full voltage and temperature range (0°C to +70°C, VCC = 4.75–5.25 V), independent of duty cycle or pulse width variations.

Key Specifications

Pinout & Package

DS1004Z-4+ is housed in a 150-mil 8-pin SOIC package (JEDEC MS-012), surface-mount compatible with vapor phase, IR, and wave soldering processes.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 5-tap silicon delay line applications.

Compared with DS1004Z-4+, DS1004Z-5+ offers coarser but longer-range delay spacing, while MAX9992ESE+ trades fixed simplicity for programmability and higher integration - neither is pin-compatible, but both address overlapping timing alignment use cases with distinct trade-offs in resolution, flexibility, and layout impact.

Availability

DS1004Z-4+ is available at Aetrix Electronics and suitable for digital test equipment, FPGA clock management, motor control PWM generation, and high-speed signal integrity validation requiring stable component supply and guaranteed long-term availability.

Supply support for DS1004Z-4+ 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

Analog Devices acquired Dallas Semiconductor in 2001 and maintains its precision timing portfolio, emphasizing high-reliability, silicon-based solutions for industrial and test instrumentation markets.

The DS1004Z-4+ belongs to the DS1004 family of fixed-tap all-silicon delay lines, designed specifically for deterministic, low-jitter, temperature-stable timing alignment in high-speed digital systems where quartz or analog alternatives introduce drift or instability.

FAQ

What is the exact input-to-tap1 delay specification for DS1004Z-4+?

The DS1004Z-4+ guarantees a minimum input-to-tap1 delay of 5 ns under all operating conditions (0°C to +70°C, VCC = 4.75–5.25 V). At nominal conditions (+25°C, VCC = 5.0 V), the typical value remains 5 ns, with ±1.5 ns total tolerance over temperature and voltage. This delay is fixed and forms the anchor point for all subsequent tap delays in the DS1004Z-4+ timing chain.

Does DS1004Z-4+ support both rising and falling edge delay accuracy?

Yes, DS1004Z-4+ maintains matched leading and trailing edge precision - tPLH and tPHL delays are specified identically across all taps. The datasheet confirms delay accuracy applies to both edges within the same ±1.0 ns nominal and ±1.75 ns temperature/voltage tolerances, preserving input signal symmetry and enabling reliable duty-cycle–sensitive applications.

Can DS1004Z-4+ drive standard TTL loads directly?

Yes, DS1004Z-4+ is rated to drive up to 10 LS-TTL loads per output. Its IOL = 12 mA (min) and IOH = –1 mA (min) at VCC = 4.75 V meet LS-TTL voltage and current thresholds. No external buffering is required when interfacing with 74LS-series logic, though proper 0.1 µF VCC bypassing is essential to maintain delay accuracy under load switching.

What is the maximum operating frequency supported by DS1004Z-4+?

DS1004Z-4+ does not specify a maximum frequency; instead, it defines minimum input pulse width (tWI) as 40% of Tap 5's tPLH - approximately 8.4 ns for DS1004Z-4+. With a 5 ns input-to-tap1 delay and 2.5 ns max rise/fall time, reliable operation is confirmed for input periods ≥20 ns (50 MHz fundamental), provided layout minimizes ringing and decoupling is optimized.

Is DS1004Z-4+ RoHS compliant and lead-free?

Yes, DS1004Z-4+ is manufactured in a RoHS-compliant, lead-free process and meets JEDEC J-STD-020A reflow specifications. The 150-mil SOIC package uses matte tin lead finish, and the device is qualified for standard lead-free soldering profiles including peak temperatures up to 260°C, as verified in Dallas Semiconductor's original qualification reports.