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PDF PI6C49X0208 Data sheet ( Hoja de datos )
| Número de pieza | PI6C49X0208 | |
| Descripción | High Performance 1:8 Multi-Voltage CMOS Buffer | |
| Fabricantes | Pericom Semiconductor | |
| Logotipo |  |
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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 outputVDD 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
V DDO
CLK1
GNDO
CLK2
V DDO
CLK3
NC
1
2
3
4
5
6
7
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
1 page  
PI6C49X0208
High Performance 1:8 Multi-Voltage CMOS Buffer
Differential input DC Characteristics (TA = -40°C to 85°C)
Symbols
Parameters
Test Conditions
IIH
Input High
Current
IN[0:1],
IN[0:1]#
VDD = VIN =3.465V
or 2.625V
IIL
Input Low
Current
IN[0:1]
IN[0:1]#
VDD = 3.465V or
2.625V VIN = 0V
VDD = 3.465V or
2.625V VIN = 0V
VPP
Peak-to-Peak Input Voltage (1) VDD = 3.3V
VDD = 2.5V
VCMR
Common Mode Input Voltage
(1,2)
Notes:
1. VIL should not be less than -0.3V.
2. Common mode voltage is defined as 1/2(VIH-VIL).
VDD = 3.3V
VDD = 2.5V
Min.
-1
-50
0.25
0.25
0.5
0.5
Typ
Max.
Units
100 uA
uA
1.3
1.3
VDD -1.35V
VDD -0.85V
uA
V
V
12-0308
5
PI6C49X0208
Rev A
01/08/13
5 Page 
PI6C49X0208
High Performance 1:8 Multi-Voltage CMOS Buffer
AC Characteristics (Over Operating Range: VDD = 2.5V ± 5%, VDDO = 1.8V ± 0.2V, TA = -40° to 85°C)
Parameters
Description
Test Conditions(1) Min.
Typ
Max. Units
fMAX
Using External Crystal
Output Frequency Using External Clock
Source (2)
10 50
MHz
DC 200
odc
tsk(o)
Output Duty Cycle
Output Skew (3)
125MHz
45
55 %
80 ps
tjit(Ø)
RMS Phase Jitter (Random)
25MHz @ (Integra-
tion Range: 100Hz-
1MHz)
0.06
ps
tjit(additive)
Additive RMS Phase Jitter (Random)
125MHz @ (Integra-
tion Range: 12kHz-
20MHz)
0.01
ps
tR/tF Output Rise/Fall Time
tEN Output Enable Time (4)
tDIS Output Disable Time (4)
20% to 80%
200
900 ps
5 cycles
5 cycles
MUXisolation
MUX Isolation
155.52MHz
59 dB
Notes:
1. Unless noted otherwise, all parameters are tested with xtal @ f <= Fxtal_max,; outputs are terminated @ 50Ω to VDDO/2, see waveforms.
2. Diff external clock source is driving IN0/IN0# and IN1/IN1# input. IN0/IN1 can be single end ref clock when IN0# /IN1# set as VDD/2
3. Identical conditions: loading, transitions, supply voltage, temperature, package type and speed grade.
4. These parameters are guaranteed, but not tested. Max delay is 5 cycles. Min. setup time = 3ns.
12-0308
11
PI6C49X0208
Rev A
01/08/13
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet PI6C49X0208.PDF ] | |
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