Renesas 5V49EE703NDGI

Overview

The 5V49EE703NDGI from Renesas (formerly IDT) is an EEPROM-programmable clock generator IC with four independent PLLs, supporting non-integer frequency synthesis from a single reference clock (1–200 MHz), delivering up to seven configurable LVTTL/LVCMOS outputs (4.9 kHz–200 MHz), and enabling redundant clock switchover for telecom and networking timing systems.

For engineers reviewing the 5V49EE703NDGI datasheet, 5V49EE703NDGI pinout, 5V49EE703NDGI application, or 5V49EE703NDGI equivalent, this device offers in-system I²C programming (400 kHz), internal non-volatile configuration storage, programmable loop bandwidth per PLL, spread spectrum on PLL0/PLL3, and flexible output routing via switch matrix - critical for jitter-sensitive, multi-clock-domain designs.

Technical Context

This device implements four fully independent PLLs - PLL0 and PLL3 support spread spectrum generation and fractional-N capability (PLL0 only), while all four feature 7-bit reference dividers and 12-bit feedback dividers. Each PLL's loop bandwidth is individually programmable via resistor, capacitor, and charge pump settings stored in registers.

The 5V49EE703NDGI integrates a 5-output-switch matrix routing PLL outputs to seven total outputs (OUT0–OUT6), with each output bank (except OUT0) having an 8-bit programmable divider, slew rate control, polarity inversion, and enable/disable function - all configurable via I²C or hardware pins SEL[2:0] and SD/OE.

Key Specifications

Pinout & Package

28-pin Very Thin Quad Flat No-Lead (VFQFPN) package, 4 mm × 4 mm body, 0.5 mm pitch, exposed thermal pad. Designed for high-density PCB layouts with low-inductance power delivery and minimal signal crosstalk.

Key Features

Applications

Equivalent & Alternatives

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

Compared with Si5341-B-GM and ICS8430I-01T, the 5V49EE703NDGI uniquely balances EEPROM-based field reprogrammability, dual-redundant clock inputs with automatic failover, and spread spectrum on two PLLs - making it optimal for industrial and telecom applications demanding both flexibility and robustness without premium package size or cost.

Availability

The 5V49EE703NDGI is available at Aetrix Electronics and suitable for telecom infrastructure, industrial networking, and 5G baseband equipment requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for 5V49EE703NDGI 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

Renesas Electronics acquired Integrated Device Technology (IDT) in 2019 and now develops and manufactures high-performance timing, memory interface, and RF solutions for communications and industrial markets.

The 5V49EE703NDGI belongs to IDT's legacy EEPROM-programmable clock generator family, designed specifically for applications needing field-configurable, fault-tolerant multi-clock synthesis in space-constrained, jitter-sensitive systems.

FAQ

What is the I²C slave address for programming the 5V49EE703NDGI?

The 5V49EE703NDGI uses a fixed 7-bit I²C slave address of 0x6A (1101010b). The R/W bit follows in the first byte; write operations send register address followed by data, and reads auto-increment after each byte. This address is hard-coded and cannot be changed, ensuring reliable communication in multi-device I²C buses where the 5V49EE703NDGI is one of several peripherals.

Does the 5V49EE703NDGI support crystal oscillator input, and how is load capacitance configured?

Yes, the 5V49EE703NDGI supports fundamental-mode quartz crystals (8–50 MHz) on the XIN/REF pin. Internal programmable load capacitance ranges from 3.5 pF to 7.5 pF in 0.125 pF steps, set via XTAL[4:0] bits (register 0x07). This eliminates external capacitors and allows fine-tuning to match vendor-specified crystal load requirements - a key capability not found in most fixed-load clock generators like the 5V49EE703NDGI's simpler alternatives.

How many independent clock outputs does the 5V49EE703NDGI provide, and what are their capabilities?

The 5V49EE703NDGI provides seven LVCMOS/LVTTL clock outputs (OUT0–OUT6). OUT0 has no output divider; the remaining six outputs each support an 8-bit programmable divider (2–256), slew rate control, polarity inversion, and individual enable/disable. All outputs are routed via a flexible switch matrix that connects any PLL to any output bank - enabling complex clock tree topologies without external logic or fanout buffers in the 5V49EE703NDGI design.

Can the 5V49EE703NDGI automatically switch between two clock sources, and under what conditions?

Yes, the 5V49EE703NDGI supports automatic switchover between CLKIN and XIN/REF when configured in Auto-Revertive mode (SM = 11b). It triggers failover when no transitions occur on the primary clock for two cycles of the secondary clock. However, automatic mode requires XIN/REF as the primary source and is disabled for crystal-only configurations - a constraint explicitly documented for the 5V49EE703NDGI, distinguishing it from simpler clock switches lacking conditional logic.

What is the purpose of the SEL[2:0] pins on the 5V49EE703NDGI, and how many configurations do they support?

The SEL[2:0] pins (Pins 23–25) select among six pre-programmed configurations stored in the 5V49EE703NDGI's internal EEPROM (CONFIG0–CONFIG5). Each configuration holds full register state - PLL dividers, output routing, spread spectrum settings, and I/O control. This enables instant hardware-triggered mode changes at power-up or runtime, eliminating firmware overhead. Two SEL combinations (110, 111) are reserved and must not be used per the 5V49EE703NDGI datasheet.