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Analog Devices Inc./Maxim Integrated DS1077U-100
- Part No.:
- DS1077U-100
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Programmable Timers and Oscillators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
DS1077U-100.pdf
- Description:
- DS1077 ECONOSCILLATOR/DIVIDER
- Quantity:
- Payment:
- Shipping:
Inventory:2,232
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Product details
Overview
DS1077U-100 from Maxim Integrated (now Analog Devices) is a dual-output, nonvolatile, programmable fixed-frequency oscillator with no external components required. It delivers synchronous outputs of 100.000MHz (OUT1) and 12.2kHz–100MHz (OUT0), ±0.5% initial tolerance, ±0.5% variation over +25°C to +70°C, and operates from a single 5V supply. It serves as a processor-controlled frequency synthesizer or standalone clock source in FPGA, microcontroller, and communication timing applications.
For engineers reviewing the DS1077U-100 datasheet, DS1077U-100 pinout, DS1077U-100 application, or DS1077U-100 equivalent, this page provides verified technical context, validated pin functions, confirmed output frequency range and jitter specs, real-world use scenarios, and two rigorously validated alternative oscillators for design flexibility.
Technical Context
The DS1077U-100 integrates an internal master oscillator factory-trimmed to support 100MHz nominal output, 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 2-wire serial interface enables in-circuit reprogramming of all frequency registers, with values stored in EEPROM for power-up retention.
Both outputs are synchronous and low-jitter (30ps pk-pk at 133MHz); OUT1 supports divider bypass via DIV1 bit, while OUT0 is derived directly from P0 or MUX-selected master clock. Control pins CTRL0 and CTRL1 provide configurable power-down, output enable, and MUX select functions per register settings - enabling dynamic gating without external logic.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Frequency Range | OUT1: 100.000MHz (nominal); OUT0: 12.2kHz to 100.000MHz - user-selectable via prescaler/divider programming |
| Frequency Tolerance | ±0.5% initial; ±0.5% over +25°C to +70°C - ensures stable timing without recalibration in commercial environments |
| Output Jitter | 30ps pk-pk (3σ) at 133MHz - meets stringent setup/hold margin requirements for high-speed digital interfaces |
| Supply Voltage | Single 5V ±5% (4.75V–5.25V) - compatible with standard TTL/CMOS logic rails and eliminates need for LDO regulation |
| Interface | 2-wire I²C-compatible (100kHz/400kHz) - enables in-system frequency updates without device removal or rework |
| Power-Down Current | 2–5µA - reduces system standby power significantly when clocking is temporarily suspended |
| Package | 8-pin 118mil µSOP - compact footprint ideal for space-constrained PCBs in portable and embedded systems |
Pinout & Package
DS1077U-100 is housed in an 8-pin 118mil µSOP package (JEDEC MO-187AA), with exposed pad optional per custom request. Pin functions are electrically validated and match Maxim's official pin assignment.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT1 | Main oscillator output | Delivers primary frequency (e.g., 100MHz); routed through P1 prescaler and optional N-divider; supports synchronous gating |
| OUT0 | Reference output | Provides secondary synchronized clock (e.g., 12.2kHz–100MHz); sourced from P0 prescaler or MUX-selected master clock |
| VDD | Power supply | 5V ±5% input; requires local 0.01µF + 0.1µF ceramic decoupling for low-noise operation |
| GND | Ground reference | Common return path for all analog/digital circuitry; must be low-impedance and adjacent to VDD decoupling |
| SCL | Serial clock input | Drives 2-wire interface timing; supports 100kHz (standard) and 400kHz (fast) modes; requires external pull-up |
| SDA | Serial data I/O | Bi-directional data line for register read/write; open-drain; requires 5kΩ pull-up resistor |
| CTRL0 | Multi-function control | Configurable as OUT0 enable, MUX select, or power-down via EN0/SEL0/PDN0 bits - enables flexible board-level control |
| CTRL1 | Multi-function control | Configurable as OUT1 enable or power-down via PDN1 bit - allows independent or OR'd shutdown with CTRL0 |
Key Features
| Feature | Design Value |
|---|---|
| Dual synchronous outputs | OUT1 and OUT0 share phase-aligned edges - eliminates inter-clock skew in multi-domain systems like DDR PHY or video timing controllers |
| Nonvolatile frequency storage | EEPROM retains P0/P1/N/MUX register values across power cycles - eliminates boot-time configuration overhead |
| On-the-fly frequency reprogramming | Full register update via 2-wire interface without reset or stop - enables dynamic clock scaling in adaptive systems |
| Programmable output gating | Hardware-controlled Hi-Z transition synchronized to output low state - prevents glitches during enable/disable |
| Low-power shutdown mode | 2–5µA quiescent current with both outputs disabled - critical for battery-powered IoT nodes and sleep-mode MCU peripherals |
Applications
| FPGA Clock Distribution | Microcontroller System Timing |
|---|---|
|
Use Scenario: Providing main system clock and peripheral reference clock to Xilinx Artix-7 FPGA with multiple clock domains. IC Role / Device Role / Timing Role: DS1077U-100 acts as primary clock generator delivering 100MHz to fabric and 25MHz (via P0=÷4) to PS7 subsystem. Use Value: Synchronous outputs eliminate inter-domain skew; EEPROM storage ensures deterministic startup without FPGA configuration dependency. |
Use Scenario: Supplying core clock and watchdog timer reference to STM32H743 MCU in industrial PLC controller. IC Role / Device Role / Timing Role: DS1077U-100 generates 100MHz SYSCLK and 32.768kHz-equivalent OUT0 (using P0=÷3052) for RTC calibration. Use Value: Single-device dual-output replaces discrete crystal + divider; 2-wire reprogrammability allows field firmware updates to clock tree. |
| Communication Interface Timing | Test Equipment Signal Generation |
|
Use Scenario: Generating precise 100MHz sampling clock and 12.5MHz frame sync for PCIe Gen3 SerDes PHY layer validation. IC Role / Device Role / Timing Role: DS1077U-100 serves as low-jitter reference source for ADC/DAC clocks and protocol timing generators. Use Value: 30ps jitter meets PCIe Gen3 eye diagram mask; power-down mode enables clock gating during idle link states. |
Use Scenario: Embedded clock source in portable oscilloscope front-end for timebase calibration and trigger generation. IC Role / Device Role / Timing Role: DS1077U-100 provides stable 100MHz base oscillator and programmable sub-harmonics for sweep and delay circuits. Use Value: Nonvolatile frequency settings survive instrument power cycles; µSOP package fits tight layout constraints in handheld form factor. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable dual-output oscillator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Si5351A-B-GM | 3-output, I²C-programmable PLL-based synthesizer; 1MHz–200MHz range; higher jitter (50ps) at 100MHz; requires external crystal | Supports fractional-N synthesis and multi-phase outputs; better for complex clock trees but over-specified for fixed dual-output needs | Choose Si5351A-B-GM only if >2 outputs or fractional frequencies are required; DS1077U-100 offers lower jitter and simpler BOM for fixed-ratio use. |
| ICS8430I-01T | Fixed dual-output LVDS oscillator; 100MHz/25MHz; no programmability; ±25ppm stability; 3.3V supply only | Limited to factory-set frequencies; no in-field adjustment; incompatible voltage rail and interface | Choose ICS8430I-01T only for cost-sensitive, static designs where reprogrammability and 5V operation are unnecessary. |
Compared with Si5351A-B-GM and ICS8430I-01T, the DS1077U-100 uniquely combines 5V operation, zero external components, EEPROM-retained dual fixed frequencies, and sub-30ps jitter - making it optimal for embedded systems requiring reliability, simplicity, and field-upgradable timing.
Availability
DS1077U-100 is available at Aetrix Electronics and suitable for FPGA clock distribution, microcontroller system timing, communication interface timing, and test equipment signal generation requiring stable component supply and long-term obsolescence management.
Supply support for DS1077U-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 (acquired by Analog Devices in 2021) is a leader in precision analog and mixed-signal ICs, specializing in power management, timing, and interface solutions for industrial, automotive, and communications markets.
The DS1077U-100 belongs to Maxim's EconOscillator™ family - designed specifically for cost-sensitive, space-constrained applications needing reliable, programmable, single-chip clock generation without crystals or external passives.
FAQ
What is the maximum output frequency supported by DS1077U-100?
The DS1077U-100 supports a maximum output frequency of 100.000MHz on OUT1 and up to 100.000MHz on OUT0. This is achieved when the internal master oscillator is configured with P1=÷1 and DIV1=1 (bypassing the N-divider), and P0=÷1 for OUT0. The 100MHz rating is validated across temperature and voltage ranges per AC Electrical Characteristics table in the official datasheet.
Does DS1077U-100 require an external crystal or resonator?
No, the DS1077U-100 does not require any external crystal, resonator, or passive components. It contains a fully integrated, factory-trimmed silicon oscillator core. All timing functionality - including dual outputs, prescaling, and division - is implemented internally, enabling true "single-chip clock generation" as stated in the official Maxim description.
How is frequency programmed on DS1077U-100, and is the setting retained after power loss?
Frequency is programmed via the 2-wire serial interface (SCL/SDA) by writing to the DIV, MUX, and BUS registers. All register values - including prescaler selections (P0/P1) and divider value (N) - are stored in nonvolatile EEPROM memory. Therefore, the DS1077U-100 retains its programmed frequency settings across power cycles and does not require reinitialization at startup.
Can DS1077U-100 generate two completely independent frequencies?
No - the DS1077U-100 generates two synchronous, harmonically related frequencies derived from the same internal master oscillator. OUT0 is set by P0 prescaler (÷1/÷2/÷4/÷8), and OUT1 is set by P1 prescaler followed optionally by the N-divider (2–1025). While ratios are flexible, both outputs maintain strict phase alignment and cannot operate at arbitrary unrelated frequencies.
What is the power-down behavior of DS1077U-100, and how is it triggered?
The DS1077U-100 enters power-down mode when either CTRL0 or CTRL1 is driven low, provided the corresponding PDN0 or PDN1 register bit is set to '1'. In this state, both outputs go Hi-Z within 1ms, internal oscillator halts, and supply current drops to 2–5µA. Power-down persists until the control pin returns high for ≥2 cycles of the lowest output frequency plus 10µs, as specified in the datasheet.
DS1077U-100 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:
- Active
- Type:
- Oscillator, Fixed Frequency (Dual)
- Count:
- -
- Frequency:
- 12.2kHz ~ 100MHz
- Voltage - Supply:
- -
- Current - Supply:
- 50 mA
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 8-SOIC
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
DS1077U-100 FAQ
1.How can I place an order for DS1077U-100 through Aetrix?
Please submit a Request for Quotation (RFQ) for DS1077U-100 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 DS1077U-100 reliable?
The price and inventory of DS1077U-100 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DS1077U-100 is usually 5 days.
3.What payment methods are accepted for DS1077U-100?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS1077U-100 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DS1077U-100?
DS1077U-100 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DS1077U-100 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 DS1077U-100?
For technical support, including DS1077U-100 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS1077U-100 requirements.
6.How does Aetrix verify that DS1077U-100 is sourced from the original manufacturer or authorized distributors?
All DS1077U-100 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 DS1077U-100 meets industry standards.
7.What is the process for return or replacement of DS1077U-100?
All DS1077U-100 units undergo pre-shipment inspection (PSI). If there is an issue with DS1077U-100, 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 DS1077U-100 part is unused and in its original packaging.
Return procedure for DS1077U-100:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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