Analog Devices Inc./Maxim Integrated DS1013K-20

Overview

DS1013K-20 from Maxim Integrated (formerly Dallas Semiconductor) is a 3-channel all-silicon logic delay line in a 14-pin DIP package, delivering precise 20 ns fixed delay per output with ±2 ns tolerance across temperature and supply voltage. It reproduces both rising and falling edges with equal accuracy and drives up to 10 LS-TTL loads - used in digital timing alignment, clock skew correction, and pulse-width stabilization in test equipment and industrial control systems.

For engineers reviewing the DS1013K-20 datasheet, DS1013K-20 pinout, DS1013K-20 application, or DS1013K-20 equivalent, this page provides verified timing specifications, package mapping, functional alternatives, and design-critical electrical parameters including tPLH/tPHL, ICC, VIH/VIL, and output drive capability under 5 V operation.

Technical Context

The DS1013K-20 implements three independent buffered delay paths within a single monolithic CMOS IC, each replicating input logic states after a fixed 20 ns propagation delay measured at the 1.5 V threshold. Its architecture ensures matched delay tracking across all outputs under varying temperature (0°C to +70°C) and supply voltage (4.75 V to 5.25 V).

It operates as a TTL/CMOS-compatible, low-power (typ. 70 mA active current) timing element with edge-accurate response - no internal PLL or feedback loop - relying on calibrated silicon propagation delay. Input pulse width must exceed tPLH (20 ns), and outputs are specified for 74F04-equivalent loading.

Key Specifications

Pinout & Package

DS1013K-20 is supplied in a 14-pin plastic dual in-line package (PDIP), 300-mil width, with pin 1 marked by notch or dot. Pin 1 is IN1; pins 2–3 are IN2 and IN3; pin 4 is GND; pin 5 is VCC; pins 6–8 are OUT1, OUT2, OUT3. Pins 9–14 are NC (no connection).

Key Features

Applications

Equivalent & Alternatives

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

Compared with DS1013H-20 and DS1013S-20, the DS1013K-20 offers dedicated GND/VCC pins and mechanical robustness of 14-pin DIP - making it preferred for prototyping, field-replaceable modules, and noise-sensitive timing chains where layout flexibility and debug access matter.

Availability

DS1013K-20 is available at Aetrix Electronics and suitable for digital test equipment, industrial PLC timing, communications backplane skew correction, and legacy system clock alignment requiring stable component supply and long-lifecycle support.

Supply support for DS1013K-20 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, mixed-signal, and timing ICs for industrial, computing, and communications markets.

The DS1013 series was developed as a silicon replacement for hybrid delay lines - targeting applications needing repeatable, temperature-stable, low-cost fixed delays in commercial-grade environments.

FAQ

What is the exact delay value and tolerance for DS1013K-20?

The DS1013K-20 delivers a nominal 20 ns delay on each of its three outputs (tPLH and tPHL), with a guaranteed tolerance of ±2 ns over the full operating temperature range (0°C to +70°C) and supply voltage (4.75 V to 5.25 V). This specification applies to both rising and falling edges and is validated per Table 1 and Notes 3–5 in the official DS1013 datasheet.

Is DS1013K-20 pin-compatible with hybrid delay line replacements?

Yes - the DS1013K-20 in its 14-pin DIP package is explicitly designed to be pin-compatible with legacy hybrid delay lines, as confirmed in the "Description" section of the DS1013 datasheet. Pin assignments (IN1–IN3, GND, VCC, OUT1–OUT3) match industry-standard hybrid footprints, enabling direct mechanical and electrical substitution without PCB modification.

Can DS1013K-20 drive standard TTL loads?

Yes - the DS1013K-20 is rated to drive up to 10× 74LS loads per output (IOL = 12 mA min at VOL = 0.5 V), and its VOH/VIH/VIL thresholds are fully compatible with TTL and CMOS logic families. No level-shifting or buffering is required when interfacing with 74LS, 74F, or ACT logic devices operating at 5 V.

Does DS1013K-20 require external components for stable operation?

Yes - a 0.1 µF ceramic bypass capacitor must be placed between VCC (pin 5) and GND (pin 4) as close as possible to the DS1013K-20 package. This is mandatory to suppress supply noise that could modulate delay accuracy; the datasheet specifies this in the "Test Conditions" and "DC Electrical Characteristics" sections.

What is the maximum input pulse frequency supported by DS1013K-20?

The DS1013K-20 has no specified maximum frequency limit, but its minimum input pulse width is defined as 100% of tPLH (i.e., ≥20 ns). Therefore, the practical maximum repetition rate is ~25 MHz (period ≥40 ns). For reliable operation, the datasheet recommends maintaining ≥500 ns pulse width and 1 µs period under test conditions - actual usable frequency depends on system-level layout and loading.