Analog Devices Inc./Maxim Integrated DS1007-7

Overview

DS1007-7 from Maxim Integrated (formerly Dallas Semiconductor) is a 7-channel all-silicon delay line IC with fixed, factory-programmed delays: OUT1–OUT4 at 7 ns each and OUT5–OUT7 at 25 ns each, ±2 ns tolerance at 25°C, operating from 5.0 V ±5% over 0°C to +70°C in a 16-pin PDIP package. It reproduces input logic states after precise propagation delays for timing alignment in digital systems.

For engineers reviewing the DS1007-7 datasheet, DS1007-7 pinout, DS1007-7 application, or DS1007-7 equivalent, key selection criteria include channel-specific delay accuracy, TTL/CMOS compatibility, low-power CMOS operation, and DIP packaging suitability for prototyping and legacy board designs requiring stable, discrete timing elements.

Technical Context

The DS1007-7 implements seven independent, non-reconfigurable silicon-based delay paths-four with identical 7 ns rising-edge delay (OUT1–OUT4), three with identical 25 ns rising-edge delay (OUT5–OUT7). All delays are specified at the 1.5 V threshold on the rising edge under VCC = 5.0 V ±5% and TA = 25°C.

It features TTL/CMOS-compatible inputs and outputs, operates with no external components, and exhibits unidirectional delay variation across temperature and supply voltage-i.e., all outputs slow or speed up together-enabling predictable skew management in synchronous signal routing.

Key Specifications

Pinout & Package

DS1007-7 is supplied in a 16-pin plastic dual in-line package (PDIP), 300-mil width, with through-hole mounting. Pin 1 is top-left corner (notch side up), pin count increases left-to-right on top row (1–8), then right-to-left on bottom row (9–16).

Key Features

Applications

Equivalent & Alternatives

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

Compared with DS1007-6 and DS1007-8, the DS1007-7 offers intermediate delay values optimized for balancing setup/hold timing in mid-speed digital interfaces-neither minimizing nor maximizing group delay differential, making it ideal for general-purpose skew correction where 7 ns and 25 ns align with common controller-to-peripheral timing windows.

Availability

DS1007-7 is available at Aetrix Electronics and suitable for high-speed data capture, digital test equipment, industrial control bus interface, and legacy system timing repair requiring stable component supply and long-lifecycle support.

Supply support for DS1007-7 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 (acquired Dallas Semiconductor in 2001) designs precision analog and mixed-signal ICs for industrial, communications, and computing applications.

The DS1007-7 belongs to the DS1007 family of fixed silicon delay lines, engineered to replace hybrid and discrete timing solutions in commercial-grade digital systems demanding repeatable, temperature-stable propagation delays.

FAQ

What is the exact delay specification for each output of the DS1007-7?

The DS1007-7 has four outputs (OUT1–OUT4) with a fixed delay of 7 ns ±2 ns and three outputs (OUT5–OUT7) with a fixed delay of 25 ns ±2 ns, both measured at the 1.5 V threshold on the rising edge under standard test conditions (VCC = 5.0 V, TA = 25°C). These values are factory-trimmed and not user-adjustable.

Is the DS1007-7 pin-compatible with other variants in the DS1007 family?

Yes, all DS1007 variants-including DS1007-7-share identical 16-pin PDIP pinout and electrical interface. Inputs IN1–IN7, outputs OUT1–OUT7, VCC (Pin 5), and GND (Pin 12) are mapped identically across the family, enabling direct substitution when delay values meet system requirements.

Does the DS1007-7 support both rising- and falling-edge delay accuracy?

No. The DS1007-7 guarantees ±2 ns accuracy only on the rising edge (tPLH) for all outputs. Falling-edge delay (tPHL) is not specified in the datasheet, and applications relying on trailing-edge timing must validate performance empirically or select alternate solutions with bidirectional specs.

Can the DS1007-7 operate from a 3.3 V supply?

No. The DS1007-7 is designed exclusively for 5.0 V ±5% operation (4.75 V to 5.25 V). Its input thresholds (VIH ≥ 2.2 V, VIL ≤ 0.8 V) and output drive strength assume a 5 V rail; operation at 3.3 V is outside specification and may result in undefined logic levels or failure to meet delay tolerance.

What is the maximum input pulse width the DS1007-7 can reliably process?

The DS1007-7 requires input pulses with width ≥100% of the longest programmed delay (i.e., ≥25 ns for DS1007-7) to ensure full propagation. While the datasheet does not specify an upper limit, practical use shows reliable operation up to 1 µs period (1 MHz repetition rate) with proper decoupling and layout-exceeding this may degrade delay accuracy due to internal node settling.