Clocks & Timing

Programmable clock generators (also called programmable timing devices) allow designers to save board space and cost by replacing crystals, oscillators, programmable oscillators, and buffers with a single timing device. This makes them well-suited for consumer, data communications, telecommunications, and computing applications. These devices are often referred to as programmable clock generators, programmable PLL clock generators, or low-power programmable clock generators. The Renesas programmable clock generator families include, among others, Universal Frequency Translators (UFT™), FemtoClock® NG, VersaClock®, and MicroClock™ each providing a different level of jitter performance, power consumption, flexibility, and cost.

3rd Gen Universal Frequency Translator: Ultra-High Performance

The UFT family of programmable clock generators is optimized for high-performance optical networks, wireless base stations, and 100 Gigabit Ethernet (GbE) interface applications. These devices are the industry’s first single-chip programmable clock generators capable of generating eight different output frequencies with less than 300 femtoseconds (fs) RMS phase jitter over the standard 12kHz to 20MHz integration range. The 3rd generation UFT family of programmable clock generators offers eight independently programmable clock outputs with the flexibility to apply virtually any input frequency and select virtually any output frequency.

FemtoClock NG and VersaClock 6: Very High Performance, Low Power

Renesas FemtoClock next-generation (NG) devices are standalone programmable clock generators/programmable oscillators that replace crystal and SAW oscillators in high-performance applications. Employing a simple, low-cost, fundamental-mode quartz crystal as the low-frequency reference, these programmable oscillators synthesize high-quality, low-jitter clock signals with < 500 fs of RMS phase jitter, up to 1.3GHz. VersaClock 6 offers the features and flexibility of the award-winning VersaClock 5 family with the best performance to date.

VersaClock 3S: Very Low Power, General Purpose

The VersaClock 3S devices deliver innovative power-saving features while saving board space by eliminating the need for multiple discrete timing components. Delivering low power and low jitter scalability, the VersaClock 3S devices meet requirements for widely used standards including PCI Express® Gen 1/2/3, and are ideal for consumer, industrial, computing, and automotive applications.

MicroClock: Ultra-Low Power, Tiny Package

The Renesas MicroClock family of ultra-low-power, miniature programmable clock generators help maximize battery life and decrease the solution size of wearables, hearables, smart devices, and embedded systems. Each device includes three outputs, selectable frequency options from 1MHz to 100MHz and configurable spread spectrum clocking to reduce EMI for your customer's designs.

Product Selection Table

    Processing table
    Family Name
    Outputs (#)
    Output Type
    Output Freq Range (MHz)
    Input Freq (MHz)
    Inputs (#)
    Input Type
    Output Banks (#)
    Core Voltage (V)
    Output Voltage (V)
    Phase Jitter Typ RMS (ps)
    Prog. Interface
    Spread Spectrum
    105°C Max. Case Temp.
    Part Number
    5L1503
    MicroClock Programmable Clock Generator    		 MicroClock 3 LVCMOS 0.032768 - 100 8 - 40, 1 - 100 1 Crystal, LVCMOS 1 1.8 1, 1.1, 1.2, 1.8 OTP Yes
    5L2503
    MicroClock Programmable Clock Generator    		 MicroClock 3 LVCMOS 0.032768 - 120 1 - 120 1 Crystal, LVCMOS 1 1.8 1.8 I2C, OTP Yes
    5L35021
    VersaClock® 3S Programmable Clock Generator    		 VersaClock 3S 5 LP-HCSL, LVCMOS 0.032768 - 125 1 - 160 1 Crystal, HCSL, LVCMOS, LVDS, LVPECL 3 1.8 1.8 3 I2C, OTP Yes
    5L35023
    VersaClock® 3S Programmable Clock Generator    		 VersaClock 3S 7 LP-HCSL, LVCMOS 0.032768 - 125 1 - 160 1 Crystal, HCSL, LVCMOS, LVDS, LVPECL 5 1.8 1.8 3 I2C, OTP Yes
    5P35021
    VersaClock® 3S Programmable Clock Generator    		 VersaClock 3S 5 LP-HCSL, LVCMOS, LVDS, LVPECL 0.032768 - 500 1 - 160 1 Crystal, LP-HCSL, LVCMOS, LVDS, LVPECL 3 3.3 1.8, 2.5, 3.3 3 I2C, OTP Yes
    5P35023
    VersaClock® 3S Programmable Clock Generator    		 VersaClock 3S 7 LP-HCSL, LVCMOS, LVDS, LVPECL 0.032768 - 500 1 - 160 1 Crystal, LP-HCSL, LVCMOS, LVDS, LVPECL 5 3.3 1.8, 2.5, 3.3 3 I2C, OTP Yes
    5P49V5913
    VersaClock® 5 Low Power Programmable Clock Generator    		 VersaClock 5 3 HCSL, LVCMOS, LVDS, LVPECL 1 - 350 1 - 350 2 Crystal, HCSL, LVCMOS, LVDS, LVPECL 2 1.8, 2.5, 3.3 1.8, 2.5, 3.3 0.7 I2C, OTP Yes
    5P49V60
    VersaClock® 6E Programmable Clock Generator for Automotive    		 VersaClock 6E 5 HCSL, LVCMOS, LVDS, LVPECL 1 - 350 1 - 350 2 Crystal, HCSL, LVCMOS, LVDS, LVPECL 4 1.8, 2.5, 3.3 1.8, 2.5, 3.3 0.5 I2C, OTP Yes
    5P49V6901
    VersaClock® 6 Low Power Programmable Clock Generator    		 VersaClock 6 5 HCSL, LVCMOS, LVDS, LVPECL 1 - 350 1 - 350 2 Crystal, HCSL, LVCMOS, LVDS, LVPECL 4 1.8, 2.5, 3.3 1.8, 2.5, 3.3 0.5 I2C, OTP Yes
    5P49V6913
    VersaClock® 6 Low Power Programmable Clock Generator    		 VersaClock 6 3 HCSL, LVCMOS, LVDS, LVPECL 1 - 350 1 - 350 2 Crystal, HCSL, LVCMOS, LVDS, LVPECL 2 1.8, 2.5, 3.3 1.8, 2.5, 3.3 0.5 I2C, OTP Yes
    5P49V6914
    VersaClock® 6 Low Power Programmable Clock Generator    		 VersaClock 6 4 HCSL, LVCMOS, LVDS, LVPECL 1 - 350 1 - 350 2 Crystal, HCSL, LVCMOS, LVDS, LVPECL 3 1.8, 2.5, 3.3 1.8, 2.5, 3.3 0.5 I2C, OTP Yes
    5P49V6965
    VersaClock® 6E Programmable Clock Generator    		 VersaClock 6E 5 HCSL, LVCMOS, LVDS, LVPECL 1 - 350 1 - 350 2 Crystal, HCSL, LVCMOS, LVDS, LVPECL 4 1.8, 2.5, 3.3 1.8, 2.5, 3.3 0.5 I2C, OTP Yes
    5X1503
    MicroClock Programmable Clock Generator with Embedded Crystal    		 MicroClock 3 LVCMOS 0.032768 - 100 52 1 Crystal (integrated) 1 1.8 1, 1.1, 1.2, 1.8 I2C, OTP Yes
    5X2503
    MicroClock Programmable Clock Generator with Embedded Crystal    		 MicroClock 3 LVCMOS 0.032768 - 120, 0.03 - 120 26 1 Crystal (integrated) 1 1.8 1.8 I2C, OTP Yes
    5X35023
    VersaClock® 3S Programmable Clock Generator with Integrated Crystal    		 VersaClock 3S 5 LP-HCSL, LVCMOS, LVDS, LVPECL 0.032768 - 500 25 1 Crystal (integrated) 3 3.3 1.8, 2.5, 3.3 1 I2C, OTP Yes
    8A34001
    System Synchronizer for IEEE 1588 - Eight Channels    		 ClockMatrix 24 HSTL, LVCMOS, LVDS, LVHSTL, LVPECL, LVTTL 0.0000005 - 1000 0.0000005 - 1000 16 HCSL, LVDS, LVHSTL, LVPECL, SSTL 8 2.5, 3.3 1.2, 1.5, 1.8, 2.5, 3.3 0.15 I2C, SPI No
    8A34002
    System Synchronizer for IEEE 1588 - Four Channels    		 ClockMatrix 16 HSTL, LVCMOS, LVDS, LVHSTL, LVPECL, LVTTL 0.0000005 - 1000 0.0000005 - 1000 14 HCSL, LVDS, LVHSTL, LVPECL, SSTL 4 2.5, 3.3 1.2, 1.5, 1.8, 2.5, 3.3 0.15 I2C, SPI No
    8A34003
    System Synchronizer for IEEE 1588 - Four Channels    		 ClockMatrix 8 HSTL, LVCMOS, LVDS, LVHSTL, LVPECL, LVTTL 0.0000005 - 1000 0.0000005 - 1000 4 HCSL, LVDS, LVHSTL, LVPECL, SSTL 4 2.5, 3.3 1.2, 1.5, 1.8, 2.5, 3.3 0.15 I2C, SPI No
    8A34004
    System Synchronizer for IEEE 1588 - Two Channels    		 ClockMatrix 8 HSTL, LVCMOS, LVDS, LVHSTL, LVPECL, LVTTL 0.0000005 - 1000 0.0000005 - 1000 4 HCSL, LVDS, LVHSTL, LVPECL, SSTL 4 2.5, 3.3 1.2, 1.5, 1.8, 2.5, 3.3 0.15 I2C, SPI No
    8A34005
    System Synchronizer for IEEE 1588 - Four Channels    		 ClockMatrix 24 HSTL, LVCMOS, LVDS, LVHSTL, LVPECL, LVTTL 0.0000005 - 1000 0.0000005 - 1000 4 HCSL, LVDS, LVHSTL, LVPECL, SSTL 4 2.5, 3.3 1.2, 1.5, 1.8, 2.5, 3.3 0.15 I2C, SPI No
    8A34011
    Line Card Synchronizer for IEEE 1588 - Eight Channels    		 ClockMatrix 24 HSTL, LVCMOS, LVDS, LVHSTL, LVPECL, LVTTL 0.0000005 - 1000 0.001 - 1000 16 HCSL, LVDS, LVHSTL, LVPECL, SSTL 8 2.5, 3.3 1.2, 1.5, 1.8, 2.5, 3.3 0.15 I2C, SPI No
    8A34012
    Line Card Synchronizer for IEEE 1588 - Four Channels    		 ClockMatrix 16 HSTL, LVCMOS, LVDS, LVHSTL, LVPECL, LVTTL 0.0000005 - 1000 0.001 - 1000 14 HCSL, LVDS, LVHSTL, LVPECL, SSTL 4 2.5, 3.3 1.2, 1.5, 1.8, 2.5, 3.3 0.15 I2C, SPI No
    8A34013
    Line Card Synchronizer for IEEE 1588 - Four Channels    		 ClockMatrix 8 HSTL, LVCMOS, LVDS, LVHSTL, LVPECL, LVTTL 0.0000005 - 1000 0.001 - 1000 4 HCSL, LVDS, LVHSTL, LVPECL, SSTL 4 2.5, 3.3 1.2, 1.5, 1.8, 2.5, 3.3 0.15 I2C, SPI No
    8A34041
    Multichannel DPLL / DCO - Eight Channels    		 ClockMatrix 24 HSTL, LVCMOS, LVDS, LVHSTL, LVPECL, LVTTL 0.0000005 - 1000 0.001 - 1000 16 HCSL, LVDS, LVHSTL, LVPECL, SSTL 8 2.5, 3.3 1.2, 1.5, 1.8, 2.5, 3.3 0.15 I2C, SPI No
    8A34042
    Multichannel DPLL / DCO - Four Channels    		 ClockMatrix 16 HSTL, LVCMOS, LVDS, LVHSTL, LVPECL, LVTTL 0.0000005 - 1000 0.001 - 1000 14 HCSL, LVDS, LVHSTL, LVPECL, SSTL 4 2.5, 3.3 1.2, 1.5, 1.8, 2.5, 3.3 0.15 I2C, SPI No
    8A34043
    Multichannel DPLL / DCO - Four Channels    		 ClockMatrix 8 HSTL, LVCMOS, LVDS, LVHSTL, LVPECL, LVTTL 0.0000005 - 1000 0.001 - 1000 4 HCSL, LVDS, LVHSTL, LVPECL, SSTL 4 2.5, 3.3 1.2, 1.5, 1.8, 2.5, 3.3 0.15 I2C, SPI No
    8A34044
    Multichannel DPLL / DCO - Four / Eight Channels    		 ClockMatrix 24 HSTL, LVCMOS, LVDS, LVHSTL, LVPECL, LVTTL 0.0000005 - 1000 0.001 - 1000 8 HCSL, LVDS, LVHSTL, LVPECL, SSTL 8 2.5, 3.3 1.2, 1.5, 1.8, 2.5, 3.3 0.15 I2C, SPI No
    8A34045
    Multichannel DPLL / DCO - Two / Eight Channels    		 ClockMatrix 24 HSTL, LVCMOS, LVDS, LVHSTL, LVPECL, LVTTL 0.0000005 - 1000 0.001 - 1000 4 HCSL, LVDS, LVHSTL, LVPECL, SSTL 8 2.5, 3.3 1.2, 1.5, 1.8, 2.5, 3.3 0.15 I2C, SPI No
    8T49N004I
    Programmable FemtoClock™ NG LVPECL/LVDS Clock Generator with 4-Outputs    		 FemtoClock NG 4 LVDS, LVPECL 15.16 - 1250 10 - 312.5 2 Crystal, HCSL, LVDS, LVPECL 1 2.5, 3.3 2.5, 3.3 0.212 I2C No
    8T49N006I
    Programmable FemtoClock™ NG LVPECL/LVDS Clock Generator with 6-Outputs    		 FemtoClock NG 6 LVDS, LVPECL 15.16 - 1250 10 - 312.5 2 Crystal, HCSL, LVDS, LVPECL 1 2.5, 3.3 2.5, 3.3 0.212 I2C No
    8T49N008I
    Programmable FemtoClock™ NG LVPECL/LVDS Clock Generator with 8-Outputs    		 FemtoClock NG 8 LVDS, LVPECL 15.16 - 1250 10 - 312.5 2 Crystal, HCSL, LVDS, LVPECL 1 2.5, 3.3 2.5, 3.3 0.212 I2C No
    8T49N012I
    FemtoClock™ NG Crystal-to-3.3V, 2.5V LVPECL/LVCMOS Clock Generator with Fanout Buffer    		 FemtoClock NG 12 CMOS, LVPECL 15.16 - 1250 10 - 312.5 2 Crystal, HCSL, LVDS, LVPECL 3 2.5, 3.3 2.5, 3.3 0.19 No
    8T49N028
    Crystal-to-3.3V, 2.5V Multiple Frequency Clock Generator with Fanout Buffer    		 FemtoClock NG 8 LVDS, LVPECL 15.16 - 1250 10 - 312.5 2 Crystal, HCSL, LVDS, LVPECL 4 2.5, 3.3 2.5, 3.3 0.212 I2C No
    8T49N240
    FemtoClock™ NG Universal Frequency Translator    		 UFT (Gen 3) 4 HCSL, LVCMOS, LVDS, LVPECL 0.008 - 1000 0.008 - 875 2 HCSL, LVCMOS, LVDS, LVHSTL, LVPECL, LVTTL 4 2.5, 3.3 1.8, 2.5, 3.3 0.2 I2C No
    8T49N241
    FemtoClock™ NG Universal Frequency Translator    		 UFT (Gen 3) 4 HCSL, LVCMOS, LVDS, LVPECL 0.008 - 1000 0.008 - 875 2 HCSL, LVCMOS, LVDS, LVHSTL, LVPECL, LVTTL 4 2.5, 3.3 1.8, 2.5, 3.3 0.35 I2C No
    8T49N242
    FemtoClock™ NG Universal Frequency Translator    		 UFT (Gen 3) 4 HCSL, LVCMOS, LVDS, LVPECL 0.008 - 1000 0.008 - 875 2 HCSL, LVCMOS, LVDS, LVHSTL, LVPECL, LVTTL 4 2.5, 3.3 1.8, 2.5, 3.3 0.276 I2C No
    8T49N285
    FemtoClock NG Universal Frequency Translator (2-in/1-PLL/8-out)    		 UFT (Gen 3) 8 HCSL, LVCMOS, LVDS, LVPECL 0.008 - 1000 0.008 - 875 2 HCSL, LVCMOS, LVDS, LVHSTL, LVPECL 4 2.5, 3.3 1.8, 2.5, 3.3 0.28 I2C, SPI No
    8T49N286
    FemtoClock NG Universal Frequency Translator (4-in/2-PLL/8-out)    		 UFT (Gen 3) 8 HCSL, LVCMOS, LVDS, LVPECL 0.008 - 1000 0.008 - 875 4 HCSL, LVCMOS, LVDS, LVHSTL, LVPECL, LVTTL 4 2.5, 3.3 2.5, 3.3 0.28 I2C, SPI No
    8T49N287
    FemtoClock NG Universal Frequency Translator (2-in/2-PLL/8-out)    		 UFT (Gen 3) 8 HCSL, LVCMOS, LVDS, LVPECL 0.008 - 1000 0.008 - 875 2 HCSL, LVCMOS, LVDS, LVHSTL, LVPECL, LVTTL 4 2.5, 3.3 2.5, 3.3 0.28 I2C No
    8T49N366I
    FemtoClock NG Triple Universal Frequency Translator    		 UFT 6 LVDS, LVPECL 0.98 - 1300 0.008 - 710 7 HCSL, LVCMOS, LVDS, LVHSTL, LVPECL, LVTTL 3 2.5 2.5 0.333 I2C Yes
    8V41NS0412
    FemtoClock™ NG 12-Output Clock Generator    		 FemtoClock Clock Generator 12 HCSL 10.91 - 2500 5 - 1000 2 Crystal, HCSL, HSTL, LVCMOS, LVDS, LVHSTL, LVPECL 4 3.3 3.3 0.095 I2C No
    8V49NS0312
    FemtoClock™ NG 12-Output Clock Generator    		 FemtoClock Clock Generator 12 LVDS, LVPECL 10.91 - 2500 5 - 1000 2 Crystal, HCSL, HSTL, LVCMOS, LVDS, LVHSTL, LVPECL 4 3.3 3.3 0.089 I2C No
    8V49NS0412
    FemtoClock™ NG 12-Output Clock Generator    		 FemtoClock Clock Generator 12 LVDS, LVPECL 10.91 - 2500 5 - 1000 2 Crystal, HCSL, HSTL, LVCMOS, LVDS, LVHSTL, LVPECL 4 3.3 3.3 0.08 I2C No
    RC210
    VersaClock® 7 Programmable Clock Generator Family    		 VersaClock® 7 16, 24 LP-HCSL, LVCMOS, LVDS 0.001 - 650 1 - 650 4 Crystal, LP-HCSL, LVCMOS, LVDS 6 1.8, 2.5, 3.3 1.8, 2.5, 3.3 0.15 EEPROM, I2C, OTP, SMBUS, SPI Yes
    RC22504A
    FemtoClock™ 2 Clock Generator    		 FemtoClock Clock Generator 4 HCSL, LVCMOS, LVDS 10 - 1000 25 - 312.5 2 Crystal, HCSL, LVCMOS, LVDS 4 1.8, 3.3 1.8 0.079 I2C, SPI No
    RC22514A
    FemtoClock™ 2 Clock Generator    		 FemtoClock Clock Generator 4 HCSL, LVCMOS, LVDS 10 - 1000 0 4 1.8, 3.3 1.8 0.079 I2C, SPI No
    RC32504A
    FemtoClock™ 2 Jitter Attenuator or Clock Generator    		 FemtoClock Clock Generator 4 HCSL, LVCMOS, LVDS 10 - 1000 5 - 1000 3 Crystal, HCSL, LVCMOS, LVDS 4 1.8, 3.3 1.8 0.079 I2C, SPI No
    RC32508A
    FemtoClock 2 Jitter Attenuator or Clock Generator    		 8 HCSL, LVCMOS, LVDS 10 - 1000 1 - 800 3 Crystal, HCSL, LVCMOS, LVDS 8 1.8, 3.3 1.8 0.067 I2C, SPI No
    RC32514A
    FemtoClock™ 2 Jitter Attenuator or Clock Generator    		 FemtoClock Clock Generator 4 HCSL, LVCMOS, LVDS 10 - 1000 1 - 800 3 Crystal, HCSL, LVCMOS, LVDS 4 1.8, 3.3 1.8 0.079 I2C, SPI No
    RC32614A
    System Synchronizer for IEEE 1588 - Six Channels    		 ClockMatrix 24 HSTL, LVCMOS, LVDS, LVHSTL, LVPECL, LVTTL 0.0000005 - 1000 0.0000005 - 1000 8 HCSL, LVDS, LVHSTL, LVPECL, SSTL 8 2.5, 3.3 1.2, 1.5, 1.8, 2.5, 3.3 0.1 I2C, SPI No
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    Documentation

    Type Title Date
    Overview
    Timing Solutions Products Overview
    PDF 872 KB
    Overview
    VersaClock Family Overview
    PDF 392 KB
    Overview
    MicroClock Programmable Clocks Family Overview
    PDF 1023 KB
    3 items