Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

Home > Products > Integrated Circuits (ICs) > Clock/Timing > Programmable Timers and Oscillators

Analog Devices Inc./Maxim Integrated DS1077LU-66+

Name: DS1077LU-66+
Brand: Analog Devices Inc./Maxim Integrated
SKU: DS1077LU-66+
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: DS1077LU-66+

Manufacturer:: Analog Devices Inc./Maxim Integrated

Category:: Programmable Timers and Oscillators

Package:: 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)

Datasheet:: DS1077LU-66+.pdf

Description:: IC OSC DUAL FX FREQ PROG 8USOP

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:4,777

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

DS1077LU-66+ from Maxim Integrated is a dual-output, nonvolatile, programmable fixed-frequency oscillator with 66.666MHz master clock capability, ±0.5% initial frequency tolerance, and ±1.25% variation over temperature and supply voltage. It delivers synchronous low-jitter outputs (OUT0 and OUT1), supports on-the-fly reprogramming via 2-wire interface, and operates from a single 2.7V–3.6V supply in an 8-pin µSOP package for space-constrained timing applications.

For engineers reviewing the DS1077LU-66+ datasheet, DS1077LU-66+ pinout, DS1077LU-66+ application, or DS1077LU-66+ equivalent, key selection considerations include its dual-synchronous output architecture, EEPROM-stored prescaler/divider settings (P0/P1/N), power-down mode with CTRL0/CTRL1 control, and compatibility with both standard (100kHz) and fast-mode (400kHz) I²C buses.

Technical Context

The DS1077LU-66+ integrates a factory-trimmed internal master oscillator (66.666MHz nominal), two independent programmable prescalers (P0 and P1, each selectable for ÷1/÷2/÷4/÷8), and a 10-bit programmable divider (N = 2–1025) on OUT1. Its control logic enables synchronous output gating, output enable, and power-down functions via configurable CTRL0 and CTRL1 pins.

Frequency configuration is stored in nonvolatile EEPROM and persists across power cycles. The 2-wire serial interface supports read/write access to DIV, MUX, and BUS registers, with automatic EEPROM write enabled by default (WC=0), ensuring robust in-system reconfiguration without external components.

Key Specifications

Parameter	Value and Actual Design Meaning
Master Frequency	66.666MHz - sets upper bound for programmable output frequencies; determines resolution and jitter floor.
Output Frequency Range	4.87kHz to 66.666MHz - achieved via prescaler and divider combinations; no external components required.
Initial Tolerance	±0.5% - ensures accurate clock generation at power-up without calibration.
Temp/Voltage Variation	±1.25% - guarantees stable timing across industrial temperature range (−40°C to +85°C) and supply (2.7V–3.6V).
Output Jitter	50ps pk-pk (3σ) at 66MHz - enables reliable high-speed digital interfacing and low-bit-error-rate communication.
Supply Current (Active)	30mA max (both outputs loaded) - optimized for low-power embedded systems with dynamic output enable control.
Power-Down Current	10µA - reduces system standby power significantly when outputs are disabled via CTRL0 or CTRL1.

Pinout & Package

DS1077LU-66+ uses an 8-pin 118mil µSOP package (JEDEC MO-187AA), optimized for minimal PCB footprint and high-density timing solutions.

Pin/Terminal	Circuit Role	Design Meaning
OUT1	Main oscillator output	Delivers primary clock signal; frequency determined by P1 prescaler and N divider (or bypassed via DIV1=1).
OUT0	Reference output	Provides secondary synchronized clock; frequency set by P0 prescaler and MUX selection.
VCC	Power supply	Single 2.7V–3.6V supply input; requires local 0.01µF + 0.1µF ceramic decoupling.
GND	Ground reference	Common return path for all analog/digital circuitry; must be low-impedance for jitter control.
CTRL0	Multi-function control pin	Configurable as MUX select, OUT0 enable, or power-down (via EN0/SEL0/PDN0 register bits).
CTRL1	Multi-function control pin	Configurable as OUT1 enable or device power-down (via PDN1 register bit); OR-connected with CTRL0 for shutdown.
SDA	2-wire serial data I/O	Open-drain bidirectional line; requires external 5kΩ pull-up; supports 100kHz/400kHz I²C protocols.
SCL	2-wire serial clock input	Master-generated clock synchronizing all register reads/writes; tolerant of standard/fast-mode timing.

Key Features

Feature	Design Value
Dual synchronous outputs	OUT0 and OUT1 share phase-aligned timing derived from same master oscillator, eliminating inter-channel skew in multi-clock domains.
Nonvolatile frequency storage	All prescaler/divider and control register values retained in EEPROM, enabling "set-and-forget" deployment without boot-time programming.
On-the-fly reprogramming	Frequencies and modes updated in-circuit via I²C without reset or power cycle-critical for adaptive clocking in field-upgradable systems.
Programmable power-down	Either CTRL0 or CTRL1 can independently trigger full device shutdown (10µA), supporting dynamic power management in battery-sensitive designs.
No external components	Self-contained oscillator core eliminates crystals, load capacitors, and feedback resistors-reducing BOM count and layout complexity.

Applications

Communications Baseband Timing	Industrial PLC Clock Synthesis
Use Scenario: Synchronizing ADC/DAC sampling clocks and FPGA logic in LTE/5G small-cell baseband units. IC Role / Device Role / Timing Role: DS1077LU-66+ provides dual-phase-locked clocks-one for data conversion (OUT1), one for control logic (OUT0)-with sub-50ps jitter. Use Value: Enables deterministic latency and reduced bit error rates in high-throughput RF interfaces without external PLLs.	Use Scenario: Generating precise real-time clock and I/O scan timing in modular industrial programmable logic controllers. IC Role / Device Role / Timing Role: DS1077LU-66+ serves as central timing source, with OUT1 driving CPU bus and OUT0 synchronizing isolated I/O modules via optocouplers. Use Value: Maintains ±1.25% accuracy across −40°C to +85°C ambient, eliminating recalibration during thermal cycling in factory-floor environments.
Embedded Vision Sensor Hub	Medical Imaging Data Acquisition
Use Scenario: Coordinating image sensor pixel clock, ISP pipeline timing, and USB 2.0 interface clock in compact edge AI vision modules. IC Role / Device Role / Timing Role: DS1077LU-66+ delivers three synchronized clocks (via prescaler/divider tuning) from a single chip: sensor clock (OUT1), ISP core clock (OUT0), and USB PHY clock (derived from OUT0). Use Value: Reduces board area and EMI by replacing discrete oscillators and simplifies firmware clock management via I²C runtime adjustment.	Use Scenario: Providing stable, low-jitter sampling clocks for multi-channel CT/MRI analog front-ends where timing errors directly impact image SNR. IC Role / Device Role / Timing Role: DS1077LU-66+ supplies 66.666MHz master clock to high-resolution ADCs and generates precisely divided clocks for digital beamforming ASICs. Use Value: 50ps jitter at 66MHz minimizes aperture uncertainty, preserving spatial resolution and contrast fidelity in diagnostic imaging.

Communications Baseband Timing

Industrial PLC Clock Synthesis

Use Scenario: Synchronizing ADC/DAC sampling clocks and FPGA logic in LTE/5G small-cell baseband units.

IC Role / Device Role / Timing Role: DS1077LU-66+ provides dual-phase-locked clocks-one for data conversion (OUT1), one for control logic (OUT0)-with sub-50ps jitter.

Use Value: Enables deterministic latency and reduced bit error rates in high-throughput RF interfaces without external PLLs.

Use Scenario: Generating precise real-time clock and I/O scan timing in modular industrial programmable logic controllers.

IC Role / Device Role / Timing Role: DS1077LU-66+ serves as central timing source, with OUT1 driving CPU bus and OUT0 synchronizing isolated I/O modules via optocouplers.

Use Value: Maintains ±1.25% accuracy across −40°C to +85°C ambient, eliminating recalibration during thermal cycling in factory-floor environments.

Embedded Vision Sensor Hub

Medical Imaging Data Acquisition

Use Scenario: Coordinating image sensor pixel clock, ISP pipeline timing, and USB 2.0 interface clock in compact edge AI vision modules.

IC Role / Device Role / Timing Role: DS1077LU-66+ delivers three synchronized clocks (via prescaler/divider tuning) from a single chip: sensor clock (OUT1), ISP core clock (OUT0), and USB PHY clock (derived from OUT0).

Use Value: Reduces board area and EMI by replacing discrete oscillators and simplifies firmware clock management via I²C runtime adjustment.

Use Scenario: Providing stable, low-jitter sampling clocks for multi-channel CT/MRI analog front-ends where timing errors directly impact image SNR.

IC Role / Device Role / Timing Role: DS1077LU-66+ supplies 66.666MHz master clock to high-resolution ADCs and generates precisely divided clocks for digital beamforming ASICs.

Use Value: 50ps jitter at 66MHz minimizes aperture uncertainty, preserving spatial resolution and contrast fidelity in diagnostic imaging.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
Si5351A-B-GM	3-output, I²C-programmable clock generator with integrated PLL; wider frequency range (8kHz–200MHz); higher power (25mA active); QFN-20 package.	Supports fractional-N synthesis and spread-spectrum clocking; suited for complex multi-clock SoC systems requiring jitter <1ps.	Select Si5351A-B-GM when >2 outputs, sub-ps jitter, or fractional division is required-DS1077LU-66+ remains optimal for cost-sensitive dual-output fixed-frequency use cases.
ICS843002AGI-01LFT	Dual-output LVDS clock generator; fixed 66.666MHz output; no I²C interface; ±50ppm stability; 3.3V only; TSSOP-20 package.	Lacks programmability and power-down; designed for high-speed backplane timing with differential signaling.	Choose ICS843002AGI-01LFT for LVDS-driven high-speed serial links; DS1077LU-66+ is preferred for single-ended, reprogrammable, low-power embedded timing.

Compared with Si5351A-B-GM and ICS843002AGI-01LFT, DS1077LU-66+ uniquely balances EEPROM-based nonvolatile programmability, ultra-low component count, and µSOP footprint-making it ideal for cost- and space-constrained applications where dual synchronous CMOS clocks with ±0.5% accuracy are sufficient.

Availability

DS1077LU-66+ is available at Aetrix Electronics and suitable for communications infrastructure, industrial automation, embedded vision, and medical imaging applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for DS1077LU-66+ 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 leader specializing in precision analog, mixed-signal, and power management ICs for industrial, automotive, and communications markets.

The DS1077L product line was engineered as a family of "EconOscillators"-low-cost, single-chip, nonvolatile programmable oscillators targeting space- and power-constrained embedded systems needing flexible, reliable clock generation without crystals or external components.

FAQ

What is the maximum output frequency of the DS1077LU-66+?

The DS1077LU-66+ has a nominal master oscillator frequency of 66.666MHz, which is also its maximum output frequency. This value is factory-trimmed and fixed for the -66 variant; OUT1 can deliver this full frequency when the N divider is bypassed (DIV1 = 1) and P1 = ÷1. No external components are needed to achieve this output.

Does the DS1077LU-66+ require an external crystal or resonator?

No, the DS1077LU-66+ does not require any external crystal, resonator, or load capacitors. It contains a fully integrated, factory-calibrated silicon oscillator core. All timing functionality-including dual outputs, prescaling, and division-is implemented internally, making DS1077LU-66+ a true "no-component" clock solution.

How is frequency programmed on the DS1077LU-66+?

Frequency is programmed via the 2-wire (I²C-compatible) serial interface using three register groups: DIV (10-bit N divider), MUX (prescaler control bits 0M1/0M0/1M1/1M0), and BUS (device address). Values are written to volatile registers first, then stored permanently in EEPROM either automatically (default WC=0) or explicitly via WRITE E2 command.

Can both outputs of the DS1077LU-66+ be disabled independently?

Yes-OUT0 can be disabled via CTRL0 (configured as output enable with EN0=1, PDN0=0), and OUT1 can be disabled via CTRL1 (configured as output enable with PDN1=0). Both outputs enter high-impedance state within 1ms, and the device remains responsive to I²C commands while outputs are gated.

What is the power-down current specification for the DS1077LU-66+?

The DS1077LU-66+ draws a maximum of 10µA in power-down mode across the full operating temperature range (−40°C to +85°C). This occurs when either CTRL0 or CTRL1 is asserted as a power-down signal (PDN0=1 or PDN1=1), disabling both outputs and shutting down the internal oscillator and logic.

DS1077LU-66+ Specifications

Product attributes: Attribute value

Manufacturer:: Analog Devices Inc./Maxim Integrated

Series:: EconOscillator™

Package/Case:: 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)

Packaging:: Bulk

Product Status:: Obsolete

Type:: Oscillator, Fixed Frequency (Dual)

Count:: -

Frequency:: 8.13kHz ~ 66.7MHz

Voltage - Supply:: 2.7V ~ 3.6V

Current - Supply:: 30 mA

Operating Temperature:: -40°C ~ 85°C

Supplier Device Package:: 8-uMAX/uSOP

Mounting Type:: Surface Mount

Grade:: -

Qualification:: -

DS1077LU-66+ FAQ

1.How can I place an order for DS1077LU-66+ through Aetrix?

Please submit a Request for Quotation (RFQ) for DS1077LU-66+ on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for DS1077LU-66+ reliable?

The price and inventory of DS1077LU-66+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DS1077LU-66+ is usually 5 days.

3.What payment methods are accepted for DS1077LU-66+?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS1077LU-66+ transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for DS1077LU-66+?

DS1077LU-66+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your DS1077LU-66+ order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for DS1077LU-66+?

For technical support, including DS1077LU-66+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS1077LU-66+ requirements.

6.How does Aetrix verify that DS1077LU-66+ is sourced from the original manufacturer or authorized distributors?

All DS1077LU-66+ products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that DS1077LU-66+ meets industry standards.

7.What is the process for return or replacement of DS1077LU-66+?

All DS1077LU-66+ units undergo pre-shipment inspection (PSI). If there is an issue with DS1077LU-66+, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The DS1077LU-66+ part is unused and in its original packaging.

Return procedure for DS1077LU-66+:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

Tech Hub

2026-09-03 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-01 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…

2026-08-21 What Is an LED Driver? Types, Circuits, Dimming, and Selection

An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…

2026-08-18 Operational Amplifier (Op Amp): Basics, Configurations, Feedback and Applications

Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…

2026-08-14 Jumper Cables: How to Use, Connect and Choose Them Safely

Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…