Analog Devices Inc./Maxim Integrated DS1073M-100

Overview

DS1073M-100 from Maxim Integrated is a user-programmable 3V fixed-frequency oscillator with dual outputs, delivering up to 100.000MHz from internal oscillator or external reference, ±0.5% initial accuracy, and 2.7–3.6V supply operation. It integrates on-chip prescaler (÷1/2/4), programmable divider (÷2 to ÷513), non-volatile register storage, and synchronous output enable - used in FPGA clocking, microcontroller timing, and industrial control systems requiring field-reprogrammable clock sources.

For engineers reviewing the DS1073M-100 datasheet, DS1073M-100 pinout, DS1073M-100 application, or DS1073M-100 equivalent, key selection considerations include its dual-output capability (I/O and OUT0), power-down mode (0.8µA standby), glitch-free reference switching (SELX), and EEPROM-based configuration enabling post-manufacture frequency reprogramming without hardware changes.

Technical Context

The DS1073M-100 implements a master oscillator followed by a user-selectable prescaler and a 9-bit programmable divider (N = 2–513), with register values stored in non-volatile memory. Its architecture supports three reference modes: internal oscillator (≈100MHz base), external clock (≤50MHz), or fundamental-mode crystal (≤25MHz) connected between OSCIN and XTAL.

It features two independent outputs: I/O (main programmable output, gated by OE) and OUT0 (reference output, unaffected by OE but disabled during power-down). The PDN/SELX pin serves dual functions - power-down control (active-low) or real-time reference selection - determined by the PDN bit in the MUX register, enabling flexible system-level clock management.

Key Specifications

Pinout & Package

DS1073M-100 is housed in a 300-mil 8-pin DIP package, compatible with through-hole assembly and prototyping breadboards. Pin assignments are electrically identical to the SOIC variant (DS1073Z-100), ensuring layout reuse across form factors.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar programmable oscillator applications.

Compared with Si5351A-B-GM and ICS843002AGI-01LFT, the DS1073M-100 uniquely combines factory-shippable default configuration, on-board non-volatile memory for field updates, and dual-reference capability - making it optimal for applications where design iteration, supply chain resilience, and functional safety redundancy are prioritized over ultra-low jitter or multi-frequency synthesis.

Availability

DS1073M-100 is available at Aetrix Electronics and suitable for industrial automation, medical instrumentation, and automotive diagnostics requiring stable component supply, long-term lifecycle support, and field-programmable timing solutions.

Supply support for DS1073M-100 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 (now part of Analog Devices) is a semiconductor company specializing in precision analog, mixed-signal, and power management ICs for industrial, medical, and communications markets.

The DS1073 product line delivers programmable, self-contained clock generators targeting cost-sensitive embedded systems needing configurable timing without external components or complex configuration protocols.

FAQ

What is the maximum output frequency of the DS1073M-100?

The DS1073M-100 is factory-configured for a maximum output frequency of 100.000MHz when using the internal oscillator. Actual output depends on programmed prescaler (M = 1/2/4) and divider (N = 2–513) values, and may be lower based on selected reference (internal, external clock ≤50MHz, or crystal ≤25MHz). The DS1073M-100 datasheet specifies this as the upper limit for the -100 variant.

How is the DS1073M-100 programmed after manufacturing?

The DS1073M-100 is programmed via its I/O pin using a 1-Wire protocol: a ~5kΩ pullup resistor applied to I/O at power-up initiates programming mode, allowing a bus master to write to the 9-bit DIV and 9-bit MUX registers. Values are stored in on-chip EEPROM and persist across power cycles. The DS1073M-100 defaults to DIV=0x000 (÷2) and MUX=0x034 unless factory-programmed otherwise.

Does the DS1073M-100 support both commercial and industrial temperature ranges?

Yes, the DS1073M-100 operates across the industrial temperature range (-40°C to +85°C) with relaxed specifications: ±2.5% combined frequency variation over voltage and temperature, versus ±1% for the commercial range (0°C to +70°C). DC and AC electrical characteristics are fully specified for both grades in the DS1073M-100 datasheet.

What is the function of the PDN/SELX pin on the DS1073M-100?

The PDN/SELX pin on the DS1073M-100 has dual functionality determined by the PDN bit in the MUX register: when PDN=1, it acts as an active-low power-down control disabling the oscillator and placing outputs in high-impedance; when PDN=0, it serves as a glitch-free reference selector toggling between internal oscillator and external/crystal source. This configurability makes the DS1073M-100 adaptable to diverse system-level clock management needs.

Can the DS1073M-100 generate two different frequencies simultaneously?

No, the DS1073M-100 generates one main output frequency on the I/O pin (programmable via M/N dividers), while the OUT0 pin provides an undivided reference signal - either the internal master clock (MCLK), external clock, or crystal-derived signal - depending on the E/I and MSEL bits. Both outputs derive from the same reference source and share the same base frequency; they are not independently programmable to different values. This behavior is inherent to the DS1073M-100 architecture.