PI6C49X0208 Datasheet, PDF (1/16 Pages) Pericom Semiconductor Corporation – High Performance 1:8 Multi-Voltage CMOS Buffer

PI6C49X0208
High Performance 1:8 Multi-Voltage CMOS Buffer
Features
• 8 single-ended outputs Fanout Buffer
• Up to 200MHz output frequency
• Ultra low output additive jitter = 0.01ps (typ.)
• Selectable reference inputs support Xtal (10~50MHz), single-
ended and differential
• Low output skew ~ 50ps (typ.)
• 2.5V / 3.3V operation
• User configurable output VDDO in different banks:
– Mixed 3.3V core, 2.5V, 1.8V or 1.5V output operating
supply
– Mixed 2.5V core, 1.8V, 1.5V or 1.2V output operating
supply
• Industrial temperature range: –40°C to +85°C
• Packaging (Pb-free & Green available):
– 32-pin TQFN (ZH)
Applications
• Networking systems including switches and Routers
• High frequency backplane based computing and telecom
platforms
Description
The PI6C49X0208 is a high performance multi-voltage 8-outputs
CMOS Fanout Buffer with internal Crystal Oscillator. The XTAL
range is from 10MHz to 50MHz. The device has a wide range of
operating voltages of 2.5V and 3.3V. The device also provides user
selectable output VDD option, which provides excellent flexibilities
to users. This device is ideal for systems that need to distribute low
jitter clock signals to multiple destinations.
Pin Configuration
CLK0 1
V DDO ²
CLK1 ³
GNDO ⁴
CLK2 ⁵
V DDO ⁶
CLK3 ⁷
NC
8
24 CLK7
23 V DDO
22 CLK6
21 GNDO
20 CLK5
19 V _DDO
18 _CLK4
17 _NC
Block Diagram
IN_SEL0 IN_SEL1 ENABLE VDDO
XIN
XOUT
IN0
IN0#
IN1
IN1#
Crystal
Oscillator
Sync
Clock Input
Control Circuit
*IN0 can be single end ref clock0 and IN0# internal bias as Vdd/2
*IN1 can be single end ref clock1 and IN1# internal bias as Vdd/2
*IN-SEL[0:1] select XTAL, IN1/1# and IN0/0# input
8
CLK0~7
12-0308
1
PI6C49X0208
Rev A
01/08/13