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Renesas Electronics Corporation

Renesas’ Timing product portfolio has been acquired by SiTime.

Datasheets, documentation, and sample orders remain available on Renesas.com through late 2026. For new designs, purchasing, support, and product inquiries, visit SiTime.com or send an email to SalesClocks@sitime.com. Full transition to SiTime is expected by late 2026.

Features

  • Packaged as 20-pin SSOP (QSOP) (Pb-free)
  • Spread spectrum capability
  • Eight addressable registers
  • Replaces multiple crystals and oscillators
  • Output frequencies up to 200 MHz at 3.3 V
  • Input crystal frequency of 5 to 27 MHz
  • Input clock frequency of 2 to 50 MHz
  • Up to nine reference outputs
  • Up to two sets of four low-skew outputs
  • Operating voltages of 3.3 V
  • Advanced, low-power CMOS process
  • For one output clock, use the ICS341. For two output clocks, see the ICS342. For three output clocks, see the ICS343. For more than three outputs, see the ICS345 or ICS348.

Description

The 345 field programmable clock synthesizer generates up to nine high-quality, high-frequency clock outputs including multiple reference clocks from a low-frequency crystal or clock input. It is designed to replace crystals and crystal oscillators in most electronic systems. Using IDT's VersaClockTM software to configure PLLs and outputs, the 345 contains a One-Time Programmable (OTP) ROM to allow field programmability. Programming features include eight selectable configuration registers, up to two sets of four low-skew outputs, and optional Spread Spectrum outputs. Using Phase-Locked Loop (PLL) techniques, the device runs from a standard fundamental mode, inexpensive crystal, or clock. It can replace multiple crystals and oscillators, saving board space and cost. The 345 is also available in factory programmed custom versions for high-volume applications.

Part NumberStatusSamplesStockPackageLead Count (#)Carrier TypeMoisture Sensitivity Level (MSL)Qty. per Reel (#)Qty. per Carrier (#)Pb (Lead) FreePb Free CategoryTemp. Range (°C)
345RIPLFObsoleteN/AOut of StockQSOP20#Tube1055#Yese3 Sn-40 to 85°C
345RIPLFTObsoleteN/AOut of StockQSOP20#Reel13000#0Yese3 Sn-40 to 85°C
345RPLFObsoleteN/AOut of StockQSOP20#Tube1055#Yese3 Sn0 to 70°C
345RPLFTObsoleteN/AOut of StockQSOP20#Reel13000#0Yese3 Sn0 to 70°C

Support Communities

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    i have a code:#include "intrinsics.h"#include "iom16c29.h"https://www.renesas.com/*==========defines======================================================*/#define ENABLE_IRQ   { asm(" FSET I");}#define DISABLE_IRQ { asm(" FCLR I");}#define DELAYLOOPS  900000#define BAUD_RATE   19200#define CPU_FREQ    20000000/*==========variables=========================================================*//*==========functions=========================================================*/void ...

    Jan 25, 2010
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    Hi  I have DA14531mod which one i want to use it in AT-Command Mode (Codeless) but i recently i got information we need to update firmware of these module so please guide me how i can update the firmware of these using FTD  also please suggest how i can ...

    May 30, 2024
  3. When selected board in FSP as User custom board my code not executes but selected as the evaluation board the code executes

    Hi I have issue related to E2 studio FSP (renesas microcontrollerR7F) When I select board as the "evalution board" and executes code(basic code to toggle led) on evaluation board it  is working but when I select board as "custom user board" and used a custom board(which is already ...

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