IDT5V925BI中文資料瑞薩數(shù)據(jù)手冊PDF規(guī)格書

General Description

The IDT5V925BI is a high-performance, low skew, low jitter

phase-locked loop (PLL) clock driver. It provides precise phase and

frequency alignment of its clock outputs to an externally applied

clock input or internal crystal oscillator. The IDT5V925BI has been

specially designed to interface with Gigabit Ethernet and Fast

Ethernet applications by providing a 125MHz clock from 25MHz

input. It can also be programmed to provide output frequencies

ranging from 3.125MHz to 160MHz with input frequencies ranging

from 3.125MHz to 80MHz.

The IDT5V925BI includes an internal RC filter that provides

excellent jitter characteristics and eliminates the need for external

components. When using the optional crystal input, the chip accepts

a 10-30MHz fundamental mode crystal with a maximum equivalent

series resistance of 50?. The on-chip crystal oscillator includes the

feedback resistor and crystal capacitors (nominal load capacitance

is 18pF).

Features

? 3V to 3.6V operating voltage

? 3.125MHz to 160MHz output frequency range

? Four programmable frequency LVCMOS/LVTTL outputs

? Input from fundamental crystal oscillator or external source

? Balanced drive outputs ±12mA

? PLL disable mode for low frequency testing

? Select inputs (S[1:0]) for divide selection (multiply ratio of 2, 3, 4,

5, 6, 7 and 8)

? 5V tolerant inputs

? Low output skew/jitter

? External PLL feedback, internal loop filter

? -40°C to 85°C ambient operating temperature

? Available in Lead-free (RoHS 6) package

? For functional replacement device use 8T49N242