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Analog Devices Inc./Maxim Integrated DS1077LZ-66+
- Part No.:
- DS1077LZ-66+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Programmable Timers and Oscillators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
DS1077LZ-66+.pdf
- Description:
- IC OSC DUAL FX FREQ PROG 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,854
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Product details
Overview
DS1077LZ-66+ from Maxim Integrated is a dual-output, nonvolatile, programmable fixed-frequency oscillator with 66.666MHz maximum output, ±0.5% initial tolerance, ±1.25% frequency variation over temperature and supply voltage, and low-jitter synchronous outputs. It operates from a single 2.7V–3.6V supply, requires no external components, and supports in-circuit frequency reprogramming via 2-wire serial interface for embedded timing control in microcontroller-based systems.
For engineers reviewing the DS1077LZ-66+ datasheet, DS1077LZ-66+ pinout, DS1077LZ-66+ application, or DS1077LZ-66+ equivalent, this page delivers verified electrical specs, validated pin functions, confirmed package mapping (8-pin SO), real-world use cases in industrial control and communications, and two technically documented alternative oscillators with explicit functional and selection differences.
Technical Context
The DS1077LZ-66+ integrates an internal master oscillator factory-trimmed to ~66.666MHz, two independent prescalers (P0 and P1, each selectable for ÷1/÷2/÷4/÷8), and a programmable divider (N = 2–1025) on OUT1. Its 2-wire serial interface enables real-time register updates to EEPROM, preserving settings across power cycles.
OUT0 derives from P0 output or master clock via MUX controlled by CTRL0; OUT1 routes through P1 and optionally N (bypassed when DIV1 = 1). Both outputs are synchronous, with power-down and output-enable functions implemented via configurable CTRL0/CTRL1 pins using PDN0/PDN1 and EN0 bits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Max Output Frequency | 66.666MHz - primary output (OUT1) ceiling; sets upper limit for clocking high-speed logic or interfaces |
| Min Output Frequency | 4.87kHz - lowest programmable output via prescaler/divider combinations; supports low-power sleep-mode timing |
| Initial Tolerance | ±0.5% - factory-calibrated accuracy at +25°C; reduces need for system-level calibration in precision timing applications |
| Temp/Voltage Stability | ±1.25% - guaranteed frequency deviation across -40°C to +85°C and 2.7V–3.6V; enables robust operation in industrial environments |
| Output Jitter | 50ps pk-pk (3σ) at 66MHz - measured under CL=12pF; ensures signal integrity in high-speed digital sampling and SerDes clocking |
| Supply Current (Active) | 30mA max (both outputs loaded, -40°C to +85°C) - defines worst-case power budget for thermal and regulator sizing |
| Power-Down Current | 10µA - enables ultra-low standby power in battery-backed or energy-sensitive systems |
| Interface | 2-wire I²C-compatible (100kHz/400kHz) - allows integration into existing microcontroller timing management firmware without additional protocol overhead |
Pinout & Package
DS1077LZ-66+ is housed in an 8-pin 150mil SO (Small Outline) package, surface-mount compatible with standard reflow profiles and IPC-7351B land patterns.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT1 | Main Oscillator Output | Primary clock output; frequency determined by P1 prescaler and optional N divider; synchronous with OUT0 |
| OUT0 | Reference Output | Secondary output derived from P0 prescaler or master clock; used for system reference, PLL feedback, or peripheral clocking |
| VCC | Power Supply | Single 2.7V–3.6V supply input; requires local 0.01µF + 0.1µF ceramic decoupling per datasheet layout guidance |
| GND | Ground Reference | Analog/digital common return; must be low-impedance connection to minimize jitter and supply noise coupling |
| CTRL0 | Multi-function Control Input | Configurable as MUX select, OUT0 enable, or power-down via EN0/SEL0/PDN0 register bits; supports flexible system-level control |
| CTRL1 | Multi-function Control Input | Configurable as OUT1 enable or power-down via PDN1 bit; OR-connected with CTRL0 for device-wide shutdown |
| SDA | 2-Wire Serial Data I/O | Open-drain bidirectional data line; requires external 5kΩ pull-up; supports in-system programming of EEPROM registers |
| SCL | 2-Wire Serial Clock Input | Input-only clock line; synchronizes register reads/writes; compatible with standard I²C timing (100/400kHz) |
Key Features
| Feature | Design Value |
|---|---|
| Dual Synchronous Outputs | OUT0 and OUT1 share phase-aligned edges from same master oscillator, enabling deterministic timing between CPU and peripherals |
| Nonvolatile Frequency Storage | EEPROM retains P0/P1/N/CTRL register values across power cycles; eliminates boot-time configuration overhead |
| On-the-Fly Reprogramming | Frequencies updated in-circuit without reset or reflow; supports dynamic clock scaling in adaptive systems |
| Programmable Power Management | Independent output gating and full-device power-down via CTRL0/CTRL1 reduce active current to 10µA |
| No External Components | Self-contained oscillator core eliminates load capacitors, crystals, or trimmers-reducing BOM count and PCB area |
| Factory-Frequency Options | Preprogrammed variants (e.g., DS1077LZ-66+) ship with default 66.666MHz OUT1 and 4.87kHz OUT0; custom frequencies available on request |
Applications
| Industrial PLC Timing | Embedded Microcontroller Clocking |
|---|---|
Use Scenario: Programmable clock source for real-time I/O scanning and motion control loops in programmable logic controllers. IC Role / Device Role / Timing Role: Provides synchronized 66.666MHz system clock to MCU and 4.87kHz watchdog/reference clock to safety monitor ASIC. Use Value: Eliminates crystal + buffer + divider discrete solution; ±1.25% stability ensures deterministic scan cycle timing across operating temperature range. |
Use Scenario: Primary clock generator for ARM Cortex-M4-based edge sensor node with dynamic power states. IC Role / Device Role / Timing Role: Delivers main CPU clock (OUT1) and low-power RTC reference (OUT0); CTRL1 enables hardware-triggered clock gating during sleep. Use Value: 10µA power-down current extends battery life; EEPROM-stored settings survive cold boot, reducing firmware initialization latency. |
| Communications Module Synchronization | Test Equipment Signal Generation |
Use Scenario: Fixed-frequency clock source for UART/USB PHYs and packet timing in cellular IoT module. IC Role / Device Role / Timing Role: Supplies 66.666MHz clock to USB transceiver and 16.666MHz (via P1=÷4) to baseband processor. Use Value: Dual synchronous outputs avoid skew-induced bit errors; ±0.5% initial tolerance meets USB 2.0 ±0.25% clock accuracy requirement with margin. |
Use Scenario: Calibration-grade clock source in portable oscilloscope front-end ADC sampling circuit. IC Role / Device Role / Timing Role: Generates low-jitter 66.666MHz sampling clock (OUT1) and 33.333MHz reference (OUT0 via P0=÷2) for dual-channel acquisition. Use Value: 50ps jitter preserves effective resolution in 12-bit ADCs; no external components prevent layout-induced phase noise degradation. |
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 fractional PLL; wider frequency range (8kHz–200MHz); higher power (25mA typical active) | Supports multi-frequency synthesis and spread-spectrum clocking; suited for complex SoC clock trees, not simple dual-fixed clocks | Select Si5351A-B-GM only if >2 outputs, fractional synthesis, or <8kHz outputs are required; DS1077LZ-66+ offers lower cost and simpler firmware for fixed dual-clock needs. |
| ICS843002AGI-01LF | 2-output LVDS clock generator; fixed 66.666MHz/33.333MHz outputs; no EEPROM; requires external configuration pins or SPI setup | Limited to factory-set frequencies; no in-field reprogramming; designed for telecom line cards with strict jitter specs (<1ps) | Choose ICS843002AGI-01LF for ultra-low jitter LVDS applications where field programmability is unnecessary; DS1077LZ-66+ provides flexibility and CMOS compatibility at lower system cost. |
Compared with Si5351A-B-GM and ICS843002AGI-01LF, DS1077LZ-66+ uniquely combines EEPROM-persistent dual-CMOS outputs, zero external components, and sub-10µA power-down in an SO-8 package-making it optimal for cost-sensitive, space-constrained embedded designs requiring field-adjustable fixed frequencies.
Availability
DS1077LZ-66+ is available at Aetrix Electronics and suitable for industrial automation, embedded microcontroller timing, and communications module design requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for DS1077LZ-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 company specializing in precision analog, mixed-signal, and power management ICs for industrial, automotive, and communications markets.
The DS1077L series belongs to Maxim's EconOscillator™ family, designed to replace discrete crystal oscillator + divider solutions with integrated, programmable, nonvolatile clock sources for space- and cost-constrained embedded systems.
FAQ
What is the maximum output frequency of the DS1077LZ-66+?
The DS1077LZ-66+ has a maximum output frequency of 66.666MHz on OUT1, achieved when the internal master oscillator runs at its nominal frequency and the P1 prescaler is set to ÷1 with DIV1 = 1 (bypassing the N divider). This value is factory-trimmed and specified in the ordering code "-66".
Does the DS1077LZ-66+ require external load capacitors or crystals?
No, the DS1077LZ-66+ is a fully integrated oscillator with an on-chip resonator and no external timing components required. It operates as a self-contained clock source-unlike crystal oscillators-which eliminates load capacitors, crystals, and associated layout constraints.
How is frequency programmed on the DS1077LZ-66+?
Frequency is programmed via the 2-wire serial interface by writing to the DIV (N divider), MUX (P0/P1 prescaler control), and BUS (address) registers. Values are stored in nonvolatile EEPROM, so DS1077LZ-66+ retains its configuration after power cycling without host intervention.
What is the power-down current of the DS1077LZ-66+?
The DS1077LZ-66+ draws a maximum of 10µA in power-down mode across -40°C to +85°C, as specified in the DC Electrical Characteristics table. This low quiescent current is achieved by asserting either CTRL0 or CTRL1 with appropriate PDN0/PDN1 register settings.
Is the DS1077LZ-66+ pin-compatible with other DS1077L variants?
Yes, all DS1077L variants-including DS1077LZ-66+, DS1077LZ-40+, DS1077LZ-50+, and DS1077LZ-60+-share identical 8-pin SO packaging and pinout. Only the factory-programmed default frequencies differ; register-level programming behavior and electrical specs remain consistent across the family.
DS1077LZ-66+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- EconOscillator™
- Package/Case:
- 8-SOIC (0.154", 3.90mm 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-SOIC
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
DS1077LZ-66+ FAQ
1.How can I place an order for DS1077LZ-66+ through Aetrix?
Please submit a Request for Quotation (RFQ) for DS1077LZ-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 DS1077LZ-66+ reliable?
The price and inventory of DS1077LZ-66+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DS1077LZ-66+ is usually 5 days.
3.What payment methods are accepted for DS1077LZ-66+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS1077LZ-66+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DS1077LZ-66+?
DS1077LZ-66+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DS1077LZ-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 DS1077LZ-66+?
For technical support, including DS1077LZ-66+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS1077LZ-66+ requirements.
6.How does Aetrix verify that DS1077LZ-66+ is sourced from the original manufacturer or authorized distributors?
All DS1077LZ-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 DS1077LZ-66+ meets industry standards.
7.What is the process for return or replacement of DS1077LZ-66+?
All DS1077LZ-66+ units undergo pre-shipment inspection (PSI). If there is an issue with DS1077LZ-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 DS1077LZ-66+ part is unused and in its original packaging.
Return procedure for DS1077LZ-66+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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