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查询PI6C2404A供应商
PI6C2404A-1
Zero-Delay Clock Buffer
Features
• Maximum rated frequency: 133 MHz
• Low cycle-to-cycle jitter
• Input to output delay, less than 200ps
• External feedback pin allows outputs to be synchronized
to the clock input
• 5V tolerant input*
• Operates at 3.3V V
DD
• Test mode allows bypass of the PLL for system testing
purposes (e.g., IBIS measurements)
• Space-saving Packaging (Pb-free and Green Available):
— 8-pin, 150-mil SOIC (W)
* FB_IN and CLKIN must reference the same voltage thresh-
olds for the PLL to deliver zero delay skewing
Block Diagram
FB_IN
CLKIN
PLL
OUTA1
OUTA2
OUTB1
OUTB2
Description
The PI6C2404A-1 is a PLL-based, zero-delay buffer, with the ability
to distribute four outputs of up to 133 MHz at 3.3V. Two banks of
two outputs exist, OUTA[1–2] and OUTB[1–2].
An external feedback pin is used to synchronize the outputs to the
input; the relationship between loading of this signal and the other
outputs determines the input-output delay.
The PI6C2404A-1 is characterized for both commercial and industrial
operation.
Pin Configuration
CLKIN
OUTA1
OUTA2
GND
1
8-Pin
2
W
3
4
8
7
6
5
FB_IN
V
DD
OUTB2
OUTB1
Pin Description
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DD
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PS8609A 01/13/05
Zero-Delay Clock Buffer
Zero-Delay and Skew Control
CLKIN Input to Output Bank Delay vs. Difference in Loading between FB_IN pin and OUTA/OUTB pins
800
600
400
200
PI6C2404A
0
–25 –20 –15 –10 –5
0 5 10 15 20 25
–200
–400
PI6C2404A-1
–600
–800
–900
CLKIN - Input to OUTA/OUTB Delay (ps)
–1000
Output Load Difference: FB_IN Load - OUTA/OUTB Load (pF)
The relationship between loading of the FB_IN signal and other outputs determines the input-output delay. Zero delay is achieved when
all outputs, including feedback, are loaded equally.
Maximum Ratings
Supply Voltage to Ground Potential ............................................................................................................................. –0.5V to +7.0V
DC Input Voltage (Except CLKIN) ........................................................................................................................ –0.5V to VDD +0.5V
DC Input Voltage CLKIN ......................................................................................................................................................–0.5 to 7V
Storage Temperature................................................................................................................................................... –65ºC to +150ºC
Maximum Soldering Temperature (10 seconds)...........................................................................................................................260ºC
Junction Temperature .................................................................................................................................................................. 150ºC
Static Discharge Voltage (per MIL-STD-883, Method 3015).................................................................................................... >2000V
Operating Conditions (V
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PS8609A 01/13/05
s
z
DC Electrical Characteristics for Industrial Temperature Devices
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PI6C2404A
Zero-Delay Clock Buffer
V
LI
V
HI
I
LI
I
HI
V
LO
V
HO
I
DD
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=V005
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NI
LO
HO
DD
Am8=4.0
Am8–=4.2
tnerruCylppuS
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AC Electrical Characteristics for Industrial Temperature Devices
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daolFp51dedaol,zHM331taderusaeM051
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Notes:
1 . CLKIN and FB_IN inputs have a threshhold voltage of VDD/2.
3
PS8609A 01/13/05
s
z
DC Electrical Characteristics for Commercial Temperature Devices
s
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V
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egatloVHGIHtuptuOI
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LO
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=V0
=V
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Am8=
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AC Electrial Characteristics for Commercial Temperature Device
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PI6C2404A
Zero-Delay Clock Buffer
DD
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DD
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8.0
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0.1sm
tinU
V
Aµ
V
tinU
HM
%
sn
sp
Notes:
1 . CLKIN and FB_IN inputs have a threshhold voltage of VDD/2.
2. t
DC =
t
HIGH
t
HIGH + tLOW
4
PS8609A 01/13/05
Switching Waveforms
t
LOW
t
HIGH
VDD/2
VDD/2
V
DD
/2
V
DD
/2
V
DD
/2
V
DD
/2
V
DD
/2
V
DD
/2 VDD/2
t
F
t
R
0.8V
2.0V
0.8V
2.0V
OUTPUT
0V
3.3V
t
SK(O)
t
SK(D)
OUTPUT
OUTPUT
t
0
INPUT
FB_IN
FB_IN Device 1
FB_IN Device 2
Duty Cycle Timing
All Outputs Rise/Fall Time
Output-Output Skew
Input-Output Propagation Delay
Device-Device Skew
PI6C2404A
Zero-Delay Clock Buffer
Test Circuit
0.1µF
0.1µF
V
DD
OUTPUTS
V
DD
GND GND
C
CLK out
LOAD
Test Circuit for all parameters
5
PS8609A 01/13/05
Packaging Mechanical: 8-Pin SOIC (W)
8
.149
.157
3.78
3.99
.0099
.0196
Zero-Delay Clock Buffer
0.25
x 45˚
0.50
PI6C2404A
.189
.196
.016
.026
0.406
0.660
REF
.050
BSC
1.27
Ordering Information
edoCgniredrOedoCegakcaPnoitpircseDegakcaPegnaRgnitarepO
WA1-4042C6IPWCIOSlim-051nip-8laicremmoC
EWA1-4042C6IPW
IWA1-4042C6IPWCIOSlim-051nip-8lairtsudnI
EIW1-A4042C6IPW
1
4.80
5.00
1.35
.053
1.75
.068
SEATING PLANE
0.10
.0040
0.25
.0098
.013
0.330
.020
0.508
0-8˚
0.40
1.27
.2284
.2440
DENOTES DIMENSIONS
X.XX
IN MILLIMETERS
X.XX
.016
.050
5.80
6.20
.0075
.0098
neerGdnaeerf-bP
CIOSlim-051nip-8
neerGdnaeerf-bP
CIOSlim-051nip-8
0.19
0.25
laicremmoC
lairtsudnI
Pericom Semiconductor Corporation • 1-800-435-2336 • www.pericom.com
6
PS8609A 01/13/05
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