Analog Devices Inc./Maxim Integrated DS1004M-2

Overview

DS1004M-2 from Dallas Semiconductor is a 5-tap all-silicon delay line with precise tap-to-tap delays of 2 ns, input-to-tap1 delay of 5 ns, ±0.75 ns nominal tap-to-tap tolerance, ±1.5 ns input-to-tap tolerance over temperature/voltage, and CMOS/TTL-compatible outputs driving up to 10 LS loads - used in high-speed clock alignment and signal deskewing in test instrumentation and digital logic systems.

For engineers reviewing the DS1004M-2 datasheet, DS1004M-2 pinout, DS1004M-2 application, or DS1004M-2 equivalent, key selection considerations include verified 2 ns tap spacing, guaranteed 5 ns minimum input-to-tap1 delay, leading/trailing edge symmetry, 8-pin DIP package compatibility, and operation across 0°C to +70°C with VCC = 5.0 V ±5%.

Technical Context

The DS1004M-2 implements a monolithic silicon delay chain delivering five deterministic, edge-aligned output taps from a single CMOS/TTL-compatible input. Its architecture ensures matched propagation paths for rising and falling edges, preserving input waveform symmetry with ≤1.5 ns total input-to-tap variation across voltage (4.75–5.25 V) and temperature (0–70°C).

Each output provides full LS-TTL drive capability (IOL = 12 mA, IOH = –1 mA), supports 15 pF load capacitance, and exhibits 2.0–2.5 ns rise/fall times. The device requires no external components and operates with a single +5 V supply, eliminating timing drift associated with RC or analog delay solutions.

Key Specifications

Pinout & Package

DS1004M-2 is housed in an industry-standard 300-mil 8-pin dual in-line package (DIP) with through-hole mounting. Pin pitch is 0.1 inch (2.54 mm), row spacing is 0.3 inches (7.62 mm), and body width is 0.3 inches (7.62 mm). Compatible with vapor phase, IR, and wave soldering per J-STD-020A.

Key Features

Applications

Equivalent & Alternatives

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

Compared with DS1004Z-2 and MAX9995, the DS1004M-2 delivers fixed, factory-trimmed 2 ns tap spacing in a through-hole DIP package with 5 V operation and no configuration overhead - making it optimal for cost-sensitive, high-volume, or legacy 5 V logic systems requiring deterministic, maintenance-free delay staging.

Availability

DS1004M-2 is available at Aetrix Electronics and suitable for high-speed logic timing calibration, digital test equipment signal deskewing, and high-frequency clock distribution requiring stable component supply, long-term obsolescence management, and consistent parametric performance across production lots.

Supply support for DS1004M-2 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 Maxim Integrated, a subsidiary of Analog Devices) specialized in precision timing, memory, and analog interface ICs for industrial, telecom, and test equipment markets.

The DS1004M-2 belongs to the DS1004 family of all-silicon delay lines designed specifically for deterministic, low-skew signal staging in 5 V digital systems where reliability and repeatability outweigh programmability.

FAQ

What is the guaranteed minimum input-to-tap1 delay for DS1004M-2?

The DS1004M-2 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). This value is specified in Table 2 of the official datasheet and confirmed by production test limits. The DS1004M-2 achieves this via laser-trimmed monolithic delay elements, ensuring consistency across units and batches without calibration.

Does DS1004M-2 support both rising and falling edge delays with equal accuracy?

Yes, the DS1004M-2 maintains identical delay accuracy for both rising (tPLH) and falling (tPHL) edges, with ±0.75 ns nominal tap-to-tap tolerance and ±1.5 ns input-to-tap tolerance applied to each edge independently. This symmetry is achieved through matched internal driver paths and is validated per JEDEC test conditions using 1.5 V switching thresholds.

Can DS1004M-2 drive standard TTL loads directly?

Yes, the DS1004M-2 outputs are fully LS-TTL compatible, capable of sinking 12 mA and sourcing –1 mA while maintaining VOH ≥ 4.0 V and VOL ≤ 0.5 V at VCC = 4.75 V. Each output can drive up to 10 LS-TTL inputs (e.g., 74F04) without external buffers, as confirmed in the DC Electrical Characteristics table.

What is the maximum operating temperature range for DS1004M-2?

The DS1004M-2 is rated for continuous operation from 0°C to +70°C ambient temperature, as defined in the Absolute Maximum Ratings and AC Electrical Characteristics sections. Performance parameters including delay tolerances and drive strength are fully specified across this range, with no derating required at the upper limit.

Is DS1004M-2 RoHS compliant and lead-free?

The DS1004M-2 was manufactured prior to full RoHS implementation and uses standard SnPb eutectic finish on its 300-mil DIP leads. It is not RoHS-compliant or lead-free. For RoHS-compliant alternatives, consider the DS1004Z-2 in SOIC package, which uses lead-free matte tin plating and meets JEDEC J-STD-020A reflow requirements.