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Home > Products > Integrated Circuits (ICs) > Clock/Timing > Clock Generators, PLLs, Frequency Synthesizers

NXP Semiconductors MPC9772FA

Name: MPC9772FA
Brand: NXP Semiconductors
SKU: MPC9772FA
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MPC9772FA

Manufacturer:: NXP Semiconductors

Category:: Clock Generators, PLLs, Frequency Synthesizers

Package:: 52-LQFP

Datasheet:: MPC9772FA.pdf

Description:: IC CLOCK GENERATOR 52TQFP

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Product details

Overview

MPC9772FA from Freescale Semiconductor (formerly Motorola) is a 3.3V, 1:12 PLL-based LVCMOS clock generator designed for high-performance, low-skew clock distribution in networking, computing, and telecom systems. It delivers up to 240 MHz output frequency, <250 ps output-to-output skew across 12 LVCMOS outputs, and supports zero-delay operation via external PLL feedback. Its role is system-level clock fanout and frequency synthesis with synchronous multi-bank control.

For engineers reviewing the MPC9772FA datasheet, MPC9772FA pinout, MPC9772FA application, or MPC9772FA equivalent, this page provides verified technical context on its PLL architecture, bank-specific divider programming (FSEL_A/B/C), QSYNC synchronization pulse generation, VCO frequency range (200–480 MHz), and LVCMOS-compatible I/O with 50 Ω transmission line drive capability.

Technical Context

The MPC9772FA implements a fully integrated PLL with independent programmable dividers for three output banks (A/B/C) and configurable feedback (FSEL_FB[2:0]), enabling non-binary output-to-reference ratios including 3:2, 4:3, 5:3, 5:4, 5:6, 8:3, and more. Its VCO operates from 200 MHz to 480 MHz (460 MHz at industrial temp), selectable via VCO_SEL pin (÷1/÷2).

It features dual LVCMOS reference inputs (CCLK0/CCLK1), crystal oscillator interface (XTAL_IN/XTAL_OUT), and synchronous clock stop circuitry for individual output disable via serial STOP_DATA/STOP_CLK interface. The QSYNC output provides a logic-low synchronization pulse aligned to coincident rising edges of QA and QC banks, supporting system-level timing alignment in multi-frequency clock domains.

Key Specifications

Parameter	Value and Actual Design Meaning
Output count	12 LVCMOS clock outputs across three banks (QA0–3, QB0–3, QC0–3)
Max output frequency	240 MHz - enables high-speed CPU, memory, and SerDes clocking
Output skew	<250 ps - ensures tight timing margins across distributed clock loads
VCO frequency range	200–480 MHz - supports wide input reference range (16.6–48 MHz) with M/N divider flexibility
Reference options	Two LVCMOS inputs (CCLK0/CCLK1) or internal crystal oscillator (10–25 MHz)
Supply voltage	3.3 V ±5% - compatible with standard LVCMOS I/O rails; separate VCC_PLL analog supply required
Operating temperature	–40°C to +85°C - qualified for industrial and telecom infrastructure environments
Package	52-lead LQFP (Case 848D) - surface-mount, RoHS-compliant footprint

Pinout & Package

Package: 52-lead LQFP (Case 848D), 10 mm × 10 mm, 0.5 mm pitch, exposed pad (not electrically connected). Requires separate decoupling for digital (VCC) and analog (VCC_PLL) supplies; RC filter recommended on VCC_PLL per datasheet Figure 7.

Pin	Circuit Role	Design Meaning
CCLK0 / CCLK1	LVCMOS reference clock inputs	Selectable primary/backup clock sources for redundancy; CCLK_SEL chooses between them
FB_IN / QFB	PLL feedback path interface	QFB must be connected to FB_IN to close PLL loop; enables zero-delay mode when routed externally
QA[0–3], QB[0–3], QC[0–3]	LVCMOS clock outputs (3 banks × 4)	Individually programmable dividers (FSEL_A/B/C); QC2/QC3 phase invertible via INV_CLK
QSYNC	Synchronization pulse output	Logic-low pulse timed to coincident rising edges of QA and QC banks; used for system baseline timing
FSEL_A[0:1]–FSEL_C[0:1]	Bank-specific output divider controls	Set NA/NB/NC dividers independently (e.g., QA = VCO÷12, QC = VCO÷2 → 6:1 ratio)
FSEL_FB[0:2]	Feedback divider control	Selects M = ÷4 to ÷40 (10 values); determines VCO frequency: fVCO = fREF × M × VCO_SEL
STOP_DATA / STOP_CLK	Serial clock stop interface	12-bit register disables QA0–3, QB0–3, QC1–3 (QC0/QFB always active); prevents runt pulses
MR/OE	Master reset / output enable	Active-high: forces all outputs to high-Z and resets PLL; required after loss of lock

Key Features

Feature	Design Value
Three independent output banks	QA/QB/QC each support distinct frequency/phase relationships (e.g., QA = 100 MHz, QC = 200 MHz, QB = 50 MHz)
Programmable 180° phase shift	INV_CLK pin toggles QC2/QC3 polarity relative to QC0/QC1 - enables differential clocking without external inverters
Synchronous clock stop	Serial STOP_DATA/STOP_CLK interface disables outputs in logic low state only - eliminates glitches during power-down
Zero-delay buffer capability	External feedback path (QFB→FB_IN) aligns output edges with reference edge - insertion delay reduced to static phase offset + jitter
On-chip crystal oscillator	Supports 10–25 MHz crystals directly - eliminates need for external oscillator in cost-sensitive designs
Industrial temperature range	–40°C to +85°C operation with full AC specs - suitable for base stations, routers, and embedded servers

Applications

Network Router Clock Tree	Multi-Core Processor Reference Clock
Use Scenario: Distributing synchronized clocks to multiple ASICs, PHYs, and packet processors in a 10G/25G router line card. IC Role / Device Role / Timing Role: Central PLL-based clock fanout device generating three independent frequencies (e.g., 156.25 MHz SerDes, 100 MHz MAC, 25 MHz management bus) with sub-250 ps skew. Use Value: Eliminates inter-chip skew accumulation; QSYNC aligns control-plane and data-plane timing; clock stop reduces dynamic power during idle periods.	Use Scenario: Providing phase-aligned clock domains to CPU cores, cache controllers, and memory interfaces in an embedded multicore SoC platform. IC Role / Device Role / Timing Role: Generates matched-frequency clocks (e.g., 200 MHz core, 100 MHz L2 cache, 50 MHz DDR controller) with deterministic phase relationships via bank dividers. Use Value: Enables synchronous domain crossing; VCO_SEL and FSEL tuning maintains stable lock across voltage/temperature; LVCMOS drive meets 50 Ω series termination requirements.
Telecom Baseband Unit	High-Performance Data Acquisition System
Use Scenario: Clocking FPGA-based digital front-end (DFE), ADC/DAC converters, and JESD204B transceivers in 5G massive MIMO baseband units. IC Role / Device Role / Timing Role: Delivers low-jitter clocks (≤13 ps RMS I/O phase jitter at 400 MHz VCO) with precise skew control across mixed-signal subsystems. Use Value: Meets JESD204B subclass 1 timing budgets; crystal oscillator option simplifies BOM; QSYNC synchronizes sample capture across ADC channels.	Use Scenario: Driving time-interleaved ADCs, FPGA logic, and PCIe Gen3 endpoints in test equipment requiring deterministic multi-clock coordination. IC Role / Device Role / Timing Role: Generates 125 MHz sampling clock, 62.5 MHz FPGA fabric clock, and 12.5 MHz trigger sync - all derived from common VCO with known phase offsets. Use Value: Bank-specific dividers ensure exact integer ratios; STOP_DATA allows per-channel clock gating; low duty-cycle variation (<±200 ps) preserves aperture accuracy.

Network Router Clock Tree

Multi-Core Processor Reference Clock

Use Scenario: Distributing synchronized clocks to multiple ASICs, PHYs, and packet processors in a 10G/25G router line card.

IC Role / Device Role / Timing Role: Central PLL-based clock fanout device generating three independent frequencies (e.g., 156.25 MHz SerDes, 100 MHz MAC, 25 MHz management bus) with sub-250 ps skew.

Use Value: Eliminates inter-chip skew accumulation; QSYNC aligns control-plane and data-plane timing; clock stop reduces dynamic power during idle periods.

Use Scenario: Providing phase-aligned clock domains to CPU cores, cache controllers, and memory interfaces in an embedded multicore SoC platform.

IC Role / Device Role / Timing Role: Generates matched-frequency clocks (e.g., 200 MHz core, 100 MHz L2 cache, 50 MHz DDR controller) with deterministic phase relationships via bank dividers.

Use Value: Enables synchronous domain crossing; VCO_SEL and FSEL tuning maintains stable lock across voltage/temperature; LVCMOS drive meets 50 Ω series termination requirements.

Telecom Baseband Unit

High-Performance Data Acquisition System

Use Scenario: Clocking FPGA-based digital front-end (DFE), ADC/DAC converters, and JESD204B transceivers in 5G massive MIMO baseband units.

IC Role / Device Role / Timing Role: Delivers low-jitter clocks (≤13 ps RMS I/O phase jitter at 400 MHz VCO) with precise skew control across mixed-signal subsystems.

Use Value: Meets JESD204B subclass 1 timing budgets; crystal oscillator option simplifies BOM; QSYNC synchronizes sample capture across ADC channels.

Use Scenario: Driving time-interleaved ADCs, FPGA logic, and PCIe Gen3 endpoints in test equipment requiring deterministic multi-clock coordination.

IC Role / Device Role / Timing Role: Generates 125 MHz sampling clock, 62.5 MHz FPGA fabric clock, and 12.5 MHz trigger sync - all derived from common VCO with known phase offsets.

Use Value: Bank-specific dividers ensure exact integer ratios; STOP_DATA allows per-channel clock gating; low duty-cycle variation (<±200 ps) preserves aperture accuracy.

Equivalent & Alternatives

The following parts are listed as comparable options for similar PLL clock generator applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
ICS954202AGT	8-output, 3.3V PLL clock generator; max 200 MHz output; no crystal oscillator; uses external loop filter	Lacks QSYNC, bank-phase inversion, and clock stop; limited to binary dividers (÷1, ÷2, ÷4…)	Choose for simpler, lower-pin-count designs where 12 outputs and non-binary ratios are unnecessary.
PI6C557-03LEX	12-output, 3.3V LVCMOS clock buffer with PLL; max 250 MHz; integrated crystal driver; no serial clock stop	Offers higher max frequency but lacks FSEL-programmable banks and QSYNC synchronization pulse	Prefer when absolute max frequency >240 MHz is critical and system-level sync pulse generation is handled elsewhere.

Compared with ICS954202AGT and PI6C557-03LEX, the MPC9772FA uniquely combines 12 independently programmable outputs, QSYNC-based system alignment, and hardware clock stop - making it optimal for complex, multi-domain timing architectures where skew, phase control, and power-aware clock gating are design-critical.

Availability

MPC9772FA is available at Aetrix Electronics and suitable for network infrastructure, telecom baseband, and high-performance computing applications requiring stable component supply, long-lifecycle support, and traceable sourcing.

Supply support for MPC9772FA 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

Freescale Semiconductor (now part of NXP Semiconductors) is a global leader in high-performance analog and mixed-signal timing solutions, with deep expertise in PLL design for mission-critical communications infrastructure.

The MPC9772FA belongs to Freescale's TIMING SOLUTIONS product line, engineered specifically for low-skew, multi-frequency clock distribution in mid-to-high-end networking and computing platforms where deterministic phase alignment and flexible frequency synthesis are essential.

FAQ

What is the maximum output frequency supported by the MPC9772FA?

The MPC9772FA supports a maximum output frequency of 240 MHz, achievable when configured with VCO_SEL=1 and appropriate output dividers (e.g., NC=2, fVCO=480 MHz). This is validated across the full industrial temperature range (–40°C to +85°C) and meets all AC specifications including skew and jitter. The MPC9772FA achieves this using its internal VCO operating up to 480 MHz and bank-specific dividers that support non-binary ratios like 5:2 or 8:3.

How does the QSYNC output function in the MPC9772FA?

The QSYNC output of the MPC9772FA is a logic-low synchronization pulse generated one output period before coincident rising edges of QA and QC bank outputs. Its width equals the period of the higher-frequency bank (QA or QC), and it reflects their phase relationship - e.g., in 2:1 mode, QSYNC asserts when QA rises and QC is at its midpoint. This signal is used for system-level timing alignment in multi-clock-domain applications. The MPC9772FA guarantees QSYNC functionality for all supported QA/QC frequency combinations.

Can all 12 outputs of the MPC9772FA be individually disabled?

No - the MPC9772FA's serial clock stop interface controls only 12 of its 14 outputs: QA0–3, QB0–3, and QC1–3. QC0 and QFB are permanently enabled and cannot be stopped. The STOP_DATA/STOP_CLK serial interface loads a 12-bit register where '0' disables the corresponding output in logic low state (preventing runt pulses), and '1' enables it. This feature is implemented in hardware and requires no firmware overhead. The MPC9772FA specification explicitly excludes QC0 and QFB from clock stop control.

What is the purpose of the VCC_PLL pin on the MPC9772FA?

The VCC_PLL pin supplies dedicated analog power to the MPC9772FA's phase-locked loop circuitry, isolated from the digital I/O supply (VCC). This separation minimizes noise coupling from switching outputs into the sensitive VCO and charge pump. Datasheet Figure 7 recommends a 5–10 Ω series resistor and 22 µF bulk capacitor to filter noise in the 100 kHz–20 MHz band - critical for maintaining specified I/O phase jitter (e.g., ≤13 ps RMS). The MPC9772FA's performance degrades measurably if VCC_PLL is tied directly to VCC without filtering.

Is the MPC9772FA pin-compatible with any other clock generators?

Yes - the MPC9772FA is explicitly documented as pin and function compatible with the MPC972, sharing identical 52-lead LQFP package (Case 848D), pinout, and control interface. This allows drop-in replacement in existing designs targeting upgraded performance (e.g., higher VCO range, enhanced skew, added QSYNC). No PCB or layout changes are required when migrating from MPC972 to MPC9772FA, and all control signals (FSEL, MR/OE, PLL_EN) retain identical behavior and timing.

MPC9772FA Specifications

Product attributes: Attribute value

Manufacturer:: NXP Semiconductors

Series:: -

Package/Case:: 52-LQFP

Packaging:: Tray

Product Status:: Obsolete

Programmable:: Not Verified

Type:: Clock Generator, Fanout Distribution, Multiplexer, Zero Delay Buffer

PLL:: Yes with Bypass

Input:: LVCMOS, Crystal

Output:: LVCMOS

Number of Circuits:: 1

Ratio - Input:Output:: 3:12

Differential - Input:Output:: No/No

Frequency - Max:: 240MHz

Divider/Multiplier:: Yes/No

Voltage - Supply:: 3.135V ~ 3.465V

Operating Temperature:: -40°C ~ 85°C

Mounting Type:: Surface Mount

Grade:: -

Qualification:: -

Supplier Device Package:: 52-TQFP (10x10)

MPC9772FA FAQ

1.How can I place an order for MPC9772FA through Aetrix?

Please submit a Request for Quotation (RFQ) for MPC9772FA 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 MPC9772FA reliable?

The price and inventory of MPC9772FA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPC9772FA is usually 5 days.

3.What payment methods are accepted for MPC9772FA?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPC9772FA transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MPC9772FA?

MPC9772FA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MPC9772FA 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 MPC9772FA?

For technical support, including MPC9772FA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPC9772FA requirements.

6.How does Aetrix verify that MPC9772FA is sourced from the original manufacturer or authorized distributors?

All MPC9772FA 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 MPC9772FA meets industry standards.

7.What is the process for return or replacement of MPC9772FA?

All MPC9772FA units undergo pre-shipment inspection (PSI). If there is an issue with MPC9772FA, 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 MPC9772FA part is unused and in its original packaging.

Return procedure for MPC9772FA:

1.Submit a request within 90 days.

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

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