PI6C2405A-1LE [PERICOM]
Zero-Delay Clock Buffer; 零延迟时钟缓冲器
| 型号： | PI6C2405A-1LE |
| 厂家： | 
PERICOM SEMICONDUCTOR CORPORATION |
| 描述： | Zero-Delay Clock Buffer |
| 文件： | 总7页 (文件大小：442K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
PI6C2405A
Zero-Delay Clock Buffer
Features
Description
• Maximum rated frequency: 133 MHz
• Low cycle-to-cycle jitter
• Input to output delay, less than 300ps
The PI6C2405Ais a PLL based, zero-delay buffer, with the ability
to distribute five outputs of up to 133MHz at 3.3V. All the outputs
are distributed from a single clock input CLKIN and output OUT0
performs zero delay by connecting a feedback to PLL.
• Internal feedback allows outputs to be synchronized
An internal feedback on OUT0 is used to synchronize the out-
puts to the input; the relationship between loading of this signal
and the outputs determines the input-output delay. PI6C2405A
is able to track spread spectrum clocking for EMI reduction.
PI6C2405A is characterized for both commercial and industrial
operation.
to the clock input
• 5V tolerant input*
• Spread spectrum clock ready
• Operates at 3.3V V
• Packaging (Pb-free & Green available):
-8-pin, 150-mil SOIC (W)
DD
PI6C2405A-1H is a high-drive version of PI6C2405A-1
-8-pin, 173-mil TSSOP (L)
* CLKIN must reference the same voltage thresholds for the PLL to
deliver zero delay skewing
Block Diagram
Pin Configuration
OUT
1
0
8
7
6
5
CLKIN
OUT
OUT
0
PLL
CLKIN
2
3
4
OUT
OUT
2
4
OUT
OUT
OUT
OUT
1
2
3
4
1
V
DD
GND
OUT
3
PI6C2405A(–1, –1H)
Pin Description
Pin
Signal
Description
1
CLKIN
OUT[1-4]
GND
Input clock reference frequency (weak pull-down)
2, 3, 5, 7
Clock Outputs
4
6
8
Ground
V
3.3V Supply
DD
OUT0
Clockoutput, internal PLL feedback (weak pull-down)
PS8592D
09/22/04
1
PI6C2405A
Zero Delay Clock Buffer
Zero Delay and Skew Control
CLKIN Input to OUTx Delay vs. Difference in Loading between OUT0 pin and OUTx pins
800
600
400
200
0
0
5
10
15
20
25
-25
-20
-15
-10
-5
-200
-400
PI6C2405A-1H
-600
-800
PI6C2405A-1
-900
-1000
Output Load Difference: OUT0 Load - OUTx Load (pF)
The relationship between loading of the OUT0 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 V +0.5V
DD
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 = 3.3V ±0.3V)
CC
Parameter
Description
Min.
3.0
0
Max.
3.6
70
Units
V
Supply Voltage
V
DD
Commerical Operating Temperature
Industrial Operating Temperature
Load Capacitance, below 100 MHz
Load Capacitance, from 100 MHz to 133
Input Capacitance
T
A
°C
pF
-40
85
30
C
L
15
C
7
IN
PS8592D
09/22/04
2
PI6C2405A
Zero Delay Clock Buffer
DC Electrical Characteristics for Industrial Temperature Devices
Parameter
Description
Test Conditions
Min.
Max.
Units
V
Input LOW Voltage
Input HIGH Voltage
Input LOW Current
Input HIGH Current
Output LOW Voltage
Output HIGH Voltage
0.8
IL
IH
IL
V
V
2.0
I
V
V
= 0V
50
125
0.4
IN
IN
µA
V
I
= V
DD
IH
V
I
I
= -8mA(-1); I = 12mA(-1H)
OL
OL
OL
OH
V
= -8mA(-1); I = -12mA(-1H)
2.4
OH
OH
Unloaded outputs 100 MHz, Select inputs at V or GND
54
39
DD
I
Supply Current
mA
DD
Unloaded outputs 66 MHz, CLKIN
AC Electrical Characteristics for Industrial Temperature Devices
Parameter
Description
Test Conditions
Min.
10
Typ.
Max.
100
133
60
Units
30pF load
15pF load
F
Output Frequency
MHz
O
10
Measured at V /2, F
< 66.67MHz, 30pF load
< 45MHz 15pF load
< 100MHz 15pF load
< 45MHz 30pF load
40
DD
OUT
OUT
OUT
OUT
(1)
Duty Cycle (-1)
Measured at V /2, F
45
55
DD
t
50
%
ns
DC
Measured at V /2, F
40
60
DD
(1)
Duty Cycle (-1H)
Measured at V /2, F
45
55
DD
Measured between 0.8V and 2.0V, 30pF load
Measured between 0.8V and 2.0V, 15pF load
Measured between 0.8V and 2.0V, 30pF load
Measured between 0.8V and 2.0V, 30pF load
Measured between 0.8V and 2.0V, 15pF load
Measured between 0.8V and 2.0V, 30pF load
2.2
1.5
1.5
2.2
1.5
1.5
(1)
Rise Time (-1)
t
R
(1)
Rise Time (-1H)
(1)
Fall Time (-1)
t
F
(1)
Fall Time (-1H)
Output to Output
skew (-1, -1H)
t
All outputs equally loaded
200
±300
600
sk(o)
(1)
Delay, CLKIN Rising
Edge to OUT0 Rising
t
Measured at V /2
0
0
ps
0
DD
(1)
Edge
Device-to-device
t
Measured at V /2 on OUT0 pins of device
SK(D)
DD
(1)
skew
Measured between 0.8V and 2.0V on -1H device
using Test Circuit #2
(1)
t
Output slew rate
1
V/ns
ps
SLEW
Cycle-to-Cycle Jitter
(-1, -1H)
t
Measured at 66.67 MHz, loaded 30pF load
200
1.0
JIT
Stable power supply, valid clocks presented on
CLKIN pin
(1)
t
PLL Lock time
ms
LOCK
Notes:
1. See Switching Waveforms on page 5.
PS8592D
09/22/04
3
PI6C2405A
Zero Delay Clock Buffer
DC Electrical Characteristics for Commercial Temperature Devices
Parameter
Description
Test Conditions
Min.
Max.
Units
V
Input LOW Voltage
Input HIGH Voltage
Input LOW Current
Input HIGH Current
Output LOW Voltage
Output HIGH Voltage
0.8
IL
IH
IL
V
V
2.0
I
V
V
= 0V
50
125
0.4
IN
IN
µA
V
I
= V
DD
IH
V
I
I
= -8mA(-1); I = 12mA(-1H)
OL
OL
OL
OH
V
= -8mA(-1); I = -12mA(-1H)
2.4
OH
OH
Unloaded outputs 100 MHz, Select inputs at V or GND
54
39
DD
I
Supply Current
mA
DD
Unloaded outputs 66.67 MHz, select inputs at V or GND
DD
AC Electrical Characteristics for Commercial Temperature Devices
Parameter
Description
Test Conditions
Min.
10
Typ.
Max.
100
133
60
Units
30pF load
15pF load
F
Output Frequency
MHz
O
10
(1)
Duty Cycle (-1)
Measured at V /2, F < 66 MHz, 30pF load
40
50
50
DD
O
t
%
ns
DC
(1)
Duty Cycle (-1H)
Measured at V /2, F < 66 MHz, 30pF load
45
55
DD
O
(1)
Rise Time @ 30pF
2.2
1.5
1.5
2.2
1.5
1.5
(1)
t
R
Rise Time @ 15pF
Measured between 0.8V and 2.0V
(1)
Rise Time @ 30pF (-1H)
(1)
Fall Time @ 30pF
(1)
t
F
Fall Time @ 15pF
Measured between 0.8V and 2.0V
All outputs equally loaded
(1)
Fall Time @ 30pF (-1H)
Output to Output skew (-1,
t
200
sk(o)
(1)
-1H)
Input to output delay,
CLKIN Rising Edge to
OUT0 Rising Edge
ps
t
Measured at V /2
0
0
±300
600
0
DD
(1)
(1)
t
Device-to-device skew
Measured at V /2 on OUT0 pins of device
SK(D)
DD
Measured between 0.8V and 2.0V on -1H
device using Test Circuit #2
(1)
t
Output slew rate
1
V/ns
ps
SLEW
Cycle-to-Cycle Jitter
(-1, -1H)
t
Measured at 66.67 MHz, loaded 30pF load
200
1.0
JIT
Stable power supply, valid clocks presented
on CLKIN pin
(1)
t
PLL Lock time
ms
LOCK
Notes:
1. See Switching Waveforms on page 5.
PS8592D
09/22/04
4
PI6C2405A
Zero Delay Clock Buffer
Switching Waveforms
Duty Cycle Timing
t
t
t
high
V
low
V
high
t
DC =
V /2
DD
/2
/2
t
t
DD
DD
high+ low
All Outputs Rise/Fall Time
3.3V
2.0V
0.8V
2.0V
0.8V
OUTPUT
0V
t
t
F
R
Output-Output Skew
V
/2
DD
OUTPUT
OUTPUT
V /2
DD
t
SK(O)
Device-Device Skew
V
/2
DD
OUTPUT Device 1
OUTPUT Device 2
V /2
DD
t
SK(D)
Input-Output Propagation Delay
V
/2
DD
INPUT
V /2
DD
OUTPUT
t
0
0.1µF
0.1µF
0.1µF
VDD
V
V
DD
1k-ohm
CLK out
CLK out
10pF
OUTPUTS
OUTPUTS
C
LOAD
1k-ohm
VDD
DD
0.1µF
GND
GND
GND
GND
Test Circuit 2
Test Circuit for tSLEW ,Output slew rate on –1H device
Test Circuit 1
Test Circuit for all parameters except t
SLEW
PS8592D
09/22/04
5
PI6C2405A
Zero Delay Clock Buffer
Packaging Mechanical: 8-Pin SOIC (W)
8
.149
.157
3.78
3.99
0.25
0.50
.0099
.0196
x 45˚
0.19
0.25
.0075
.0098
1
0-8˚
.189
.196
4.80
5.00
0.40
.016
1.27
.050
.016
.026
0.406
0.660
.2284
1.35
1.75
.053
.068
.2440
5.80
6.20
SEATING PLANE
REF
.050
BSC
1.27
0.10
0.25
.0040
.0098
.013 0.330
.020 0.508
X.XX DENOTES DIMENSIONS
X.XX IN MILLIMETERS
Packaging Mechanical: 8-Pin TSSOP (L)
PS8592D
09/22/04
6
PI6C2405A
Zero Delay Clock Buffer
Ordering Information for Commercial Operating Ranges
Ordering Code
Package Code
Package Description
8-pin 150-mil SOIC
PI6C2405A-1W
W
W
W
W
L
PI6C2405A-1WE
PI6C2405A-1HW
PI6C2405A-1HWE
PI6C2405A-1L
Pb-free & Green, 8-pin 150-mil SOIC
8-pin 150-mil SOIC
Pb-free & Green, 8-pin 150-mil SOIC
8-pin 173-mil TSSOP
PI6C2405A-1LE
PI6C2405A-1HL
PI6C2405A-1HLE
L
Pb-free & Green, 8-pin 173-mil TSSOP
8-pin 173-mil TSSOP
L
L
Pb-free & Green, 8-pin 173-mil TSSOP
Ordering Information for Industrial Operating Ranges
Ordering Code
Package Code
Package Description
8-pin 150-mil SOIC
PI6C2405A1WI
W
W
W
W
L
PI6C2405A-1WIE
PI6C2405A-1HWI
PI6C2405A-1HWIE
PI6C2405A-1LI
Pb-free & Green, 8-pin 150-mil SOIC
8-pin 150-mil SOIC
Pb-free & Green, 8-pin 150-mil SOIC
8-pin 173-mil TSSOP
PI6C2405A-1LIE
PI6C2405A-1HLI
PI6C2405A-1HLIE
L
Pb-free & Green, 8-pin 173-mil TSSOP
8-pin 173-mil TSSOP
L
L
Pb-free & Green, 8-pin 173-mil TSSOP
Notes:
1. Thermal characteristics can be found on the company web site at www.pericom.com/packaging/
2. X = Tape/Reel
Pericom Semiconductor Corporation • 1-800-435-2336 • www.pericom.com
PS8592D
09/22/04
7
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