9DMU0431 Datasheet, PDF (1/11 Pages) Integrated Circuit Systems – Spread Spectrum Compatible

2:4 1.5V PCIe Gen1-2-3 Clock Mux
9DMU0431
DATASHEET
General Description
The 9DMU0431 is a member of IDT's SOC-Friendly 1.5V
Ultra-Low-Power (ULP) PCIe Gen1-2-3 family. Each of the 4
outputs has its own dedicated OE# pin for optimal system
control and power management. The part provides
asynchronous and glitch-free switching modes.
Recommended Application
2:4 PCIe Gen1-2-3 clock multiplexer
Output Features
• 4 – Low-Power (LP) HCSL DIF pair
Key Specifications
• DIF additive cycle-to-cycle jitter <5ps
• DIF phase jitter is PCIe Gen1-2-3 compliant
• Additive phase jitter @ 125MHz: 535fs rms typical (12kHz
to 20MHz)
• DIF output-to-output skew <50ps
Features/Benefits
• LP-HCSL outputs; save 8 resistors compared to standard
HCSL outputs
• 1.5V operation; 31mW typical power consumption
• Selectable asynchronous or glitch-free switching; allows
the mux to be selected at power up even if both inputs are
not running, then transition to glitch-free switching mode
• Spread Spectrum Compatible; supports EMI reduction
• OE# pins; support DIF power management
• HCSL differential inputs; can be driven by common clock
sources
• 1MHz to 167MHz operating frequency
• Space saving 24-pin 4x4mm VFQFPN; minimal board
space
Block Diagram
,
^OE(3:0)#
4
DIF_INA
DIF_INB
vSW_MODE
^SEL_A_B#
DIF3
A
DIF2
B
DIF1
DIF0
9DMU0431 REVISION A 09/24/14
1
©2014 Integrated Device Technology, Inc.