Analog Devices Inc./Maxim Integrated DS1004Z-4/T&R

Overview

DS1004Z-4/T&R from Dallas Semiconductor (now Maxim Integrated) is a 5-tap all-silicon delay line with nominal input-to-tap1 delay of 5 ns, tap-to-tap delays of 4 ns, ±1.0 ns nominal tap-to-tap tolerance, and ±1.75 ns over temperature/voltage. It delivers precise leading/trailing edge symmetry and drives up to 10 LS loads in high-speed digital timing applications such as clock deskewing and signal alignment.

For engineers reviewing the DS1004Z-4/T&R datasheet, DS1004Z-4/T&R pinout, DS1004Z-4/T&R application, or DS1004Z-4/T&R equivalent, key selection criteria include verified 4 ns tap spacing, 5 ns input-to-tap1 delay, ±1.75 ns worst-case delay variation across 0°C–70°C and 4.75V–5.25V, CMOS/TTL compatibility, and 150-mil SOIC packaging for space-constrained PCB layouts.

Technical Context

The DS1004Z-4/T&R implements a monolithic silicon delay chain with five deterministic output taps derived from a single CMOS-compatible input. Each tap provides fixed, factory-trimmed propagation delay relative to the previous stage, with no external components required.

Delay accuracy is maintained across both rising and falling edges (tPLH/tPHL matched), supporting symmetrical waveform preservation. Input-to-tap1 delay is guaranteed ≥5 ns, and subsequent taps are spaced at precisely 4 ns intervals (tap1→tap2 = 4 ns, tap2→tap3 = 4 ns, etc.), per Table 2 in the official datasheet.

Key Specifications

Pinout & Package

DS1004Z-4/T&R is housed in an 8-pin SOIC package with 150-mil body width and standard gull-wing lead form. Pin pitch is 1.27 mm (0.050"), compliant with JEDEC MS-012.

Key Features

Applications

Equivalent & Alternatives

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

Compared with DS1004M-4 and MAX9602ESE+, DS1004Z-4/T&R uniquely delivers five factory-trimmed, simultaneously available delay taps in a compact 150-mil SOIC package-enabling deterministic multi-phase timing without software control or layout compromise.

Availability

DS1004Z-4/T&R is available at Aetrix Electronics and suitable for high-speed clock deskewing, digital signal alignment, logic glitch suppression, and timing margin verification requiring stable component supply and consistent 4 ns tap spacing.

Supply support for DS1004Z-4/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

Dallas Semiconductor, now part of Analog Devices (via Maxim Integrated acquisition), designs precision timing, memory, and security ICs for industrial, communications, and embedded systems.

The DS1004Z-4/T&R belongs to the DS1004 family of all-silicon delay lines engineered for deterministic, drift-free multi-phase signal delay in high-reliability digital timing circuits.

FAQ

What is the exact nominal delay progression across all five taps of the DS1004Z-4/T&R?

The DS1004Z-4/T&R provides fixed nominal delays of 5 ns (tap1), 9 ns (tap2), 13 ns (tap3), 17 ns (tap4), and 21 ns (tap5) measured from the 1.5 V point of the input edge. These values derive from a 5 ns input-to-tap1 base plus four successive 4 ns increments, as confirmed in Table 2 of the official datasheet.

Does the DS1004Z-4/T&R support both rising and falling edge delay matching?

Yes, the DS1004Z-4/T&R guarantees matched tPLH and tPHL delays across all taps, preserving input waveform symmetry. The datasheet explicitly states "leading and trailing edge precision preserves the input symmetry" and specifies delay tolerances apply to both edges under Note 3 of Table 1.

Can the DS1004Z-4/T&R drive standard TTL loads directly?

Yes, the DS1004Z-4/T&R can drive up to 10 LS-TTL loads per output, as stated in the DESCRIPTION section. Its IOL = 12 mA and IOH = –1 mA specifications meet LS-TTL voltage/current requirements when operating at VCC = 4.75 V to 5.25 V.

Is the DS1004Z-4/T&R pin-compatible with other DS1004 variants like DS1004Z-5?

No, DS1004Z-4/T&R is not pin-compatible with DS1004Z-5 in terms of delay function-though both share identical pinout and package. The "-4" and "-5" suffixes denote different factory-trimmed tap-to-tap delays (4 ns vs. 5 ns); electrical and mechanical pin mapping remains identical, but timing behavior differs.

What is the maximum operating junction temperature for the DS1004Z-4/T&R?

The DS1004Z-4/T&R has an ambient operating temperature range of 0°C to +70°C. While absolute maximum junction temperature is not explicitly specified, the device's thermal resistance and power dissipation (ICC ≤ 75 mA at 5.25 V) imply safe operation within this ambient range when mounted per JEDEC SOIC guidelines and with adequate PCB copper area.