IDT8V41N004I Datasheet, PDF (1/26 Pages) Integrated Device Technology – Selectable external crystal or differential input source

FemtoClock^® NG Crystal-to-HCSL
Clock Generator
IDT8V41N004I
DATA SHEET
General Description
The IDT8V41N004I is a clock generator designed for Gigabit
Ethernet, 10 Gigabit Ethernet, SGMII and PCI Express™
applications. The device generates a selectable 100MHz, 125MHz,
156.25MHz or 312.5MHz clock signal from 25MHz input. The
IDT8V41N004I uses IDT’s fourth generation FemtoClock^®NG
technology to provide low phase noise performance, combined with
excellent power supply noise rejection for optimal performance in the
targeted applications. The device supports a 3.3V supply voltage and
is packaged in a compact, lead-free (RoHS 6) 32-lead VFQFN
package. The industrial temperature range supports high end
computing, telecommunication and networking end equipment
requirements.
Features
• Fourth generation FemtoClock^® NG technology
• Four 100MHz, 125MHz, 156.25MHz and 312.5MHz clocks for
Gigabit Ethernet, 10 Gigabit Ethernet, SGMII and PCI Express
applications, HCSL interface levels
• Selectable external crystal or differential input source
• Crystal oscillator interface designed for 25MHz parallel
resonant crystal
• Differential CLK, nCLK input pair accepts LVPECL, LVDS,
LVHSTL, HCSL input levels
• Internal resistor bias on nCLK pin allows the user to drive CLK
input with external single-ended (LVCMOS/ LVTTL) input levels
• PCI Express Gen1, Gen2, and Gen 3 compliant
• RMS phase jitter 156.25MHz (12kHz - 20MHz): 0.217ps
• Full 3.3V supply voltage
• -40°C to 85°C ambient operating temperature
Pin Assignment
GND
nQ0
Q0
V_DD
OE3
OE2
V_DD
V_DDA
24 23 22 21 20 19 18 17
25
16
26
15
27
14
28 _IDT8V41N004I
13
29
12
30
11
31
10
32 _{1 2 3 4 5 6 7 8} 9
FSEL1
FSEL0
V_DD
XTAL_OUT
XTAL_IN
CLK_SEL
nREF_OUT
REF_OUT
IDT8V41N004NLGI REVISION A DECEMBER 18, 2012
32 Lead VFQFN
5mm x 5mm x 0.925mm Package Body
3.15mm x 3.15mm EPad Size
NL Package
Top View
1
©2012 Integrated Device Technology, Inc.