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PI6C2405A
Datasheet (PERICOM)
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Datasheet PI6C2405A Datasheet (PERICOM)

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PLL
CLKIN
OUT
0
OUT
1
OUT
2
OUT
3
OUT
4
PI6C2405A(–1, –1H)
1
2
3
GND
4
OUT
1
OUT
0
V
DD
OUT
3
8
7
6
5
CLKIN
OUT
2
OUT
4
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PI6C2405A
Zero-Delay Clock Buffer
Features
• Maximum rated frequency: 133 MHz
• Low cycle-to-cycle jitter
• Input to output delay, less than 300ps
• Internal feedback allows outputs to be synchronized
to the clock input
• Spread spectrum clock ready
• Operates at 3.3V V
DD
• Packaging (Pb-free & Green available):
-8-pin, 150-mil SOIC (W)
-8-pin, 173-mil TSSOP (L)
* CLKIN must reference the same voltage thresholds for the PLL to
deliver zero delay skewing
Block Diagram
Description
The PI6C2405A is a PLL based, zero-delay buffer, with the ability to distribute ve 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.
An internal feedback on OUT0 is used to synchronize the out­puts 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.
PI6C2405A-1H is a high-drive version of PI6C2405A-1
Pin Conguration
Pin Description
Pin Signal Description
1 CLKIN Input clock reference frequency (weak pull-down)
2, 3, 5, 7 OUT[1-4] Clock Outputs
4 GND Ground
6 V
DD
8 OUT0 Clockoutput, internal PLL feedback (weak pull-down)
3.3V Supply
1
PS8592D 09/22/04
Zero Delay and Skew Control
Output Load Difference: OUT0 Load - OUTx Load (pF)
CLKIN - Input to OUTx Delay (ps)
600
800
400
200
0
-200
-400
-600
-800
-900
-1000
-25 -20 -15 -10 -5
0 5
10 15 20 25
PI6C2405A-1H
PI6C2405A-1
CLKIN Input to OUTx Delay vs. Difference in Loading between OUT0 pin and OUTx pins
PI6C2405A
Zero Delay Clock Buffer
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 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
Parameter Description Min. Max. Units
V
DD
T
A
C
L
Supply Voltage 3.0 3.6 V
Commerical Operating Temperature 0 70
Industrial Operating Temperature -40 85
Load Capacitance, below 100 MHz 30
C
IN
Input Capacitance 7
= 3.3V ±0.3V)
CC
°C
pFLoad Capacitance, from 100 MHz to 133 15
2
PS8592D 09/22/04
PI6C2405A
Zero Delay Clock Buffer
DC Electrical Characteristics for Industrial Temperature Devices
Parameter Description Test Conditions Min. Max. Units
V
IL
V
IH
I
IL
I
IH
V
OL
V
OH
I
DD
Input LOW Voltage 0.8
Input HIGH Voltage 2.0
Input LOW Current VIN = 0V 50
Input HIGH Current VIN = V
DD
125
Output LOW Voltage IOL = -8mA(-1); IOL = 12mA(-1H) 0.4
Output HIGH Voltage IOH = -8mA(-1); IOH = -12mA(-1H) 2.4
Supply Current
Unloaded outputs 100 MHz, Select inputs at VDD or GND 54
Unloaded outputs 66 MHz, CLKIN 39
µA
mA
AC Electrical Characteristics for Industrial Temperature Devices
Parameter Description Test Conditions Min. Typ. Max. Units
F
t
t
sk(o)
DC
t
R
t
F
O
Output Frequency
Duty Cycle
Duty Cycle
Rise Time
Rise Time
Fall Time
Fall Time
(1)
(-1)
(1)
(-1H)
(1)
(-1)
(1)
(-1H) Measured between 0.8V and 2.0V, 30pF load 1.5
(1)
(-1)
(1)
(-1H) Measured between 0.8V and 2.0V, 30pF load 1.5
Output to Output skew (-1, -1H)
(1)
Delay, CLKIN Rising
0
t
SK(D)
t
SLEW
t
JIT
t
LOCK
Notes:
1. See Switching Waveforms on page 5.
Edge to OUT0 Rising
(1)
Edge
Device-to-device
(1)
skew
Output slew rate
Cycle-to-Cycle Jitter (-1, -1H)
PLL Lock time
(1)
(1)
30pF load 10 100
15pF load 10 133
Measured at VDD/2, F
Measured at VDD/2, F
Measured at VDD/2, F
Measured at VDD/2, F
< 66.67MHz, 30pF load 40
OUT
< 45MHz 15pF load 45 55
OUT
< 100MHz 15pF load 40 60
OUT
< 45MHz 30pF load 45 55
OUT
50
60
MHz
Measured between 0.8V and 2.0V, 30pF load 2.2
Measured between 0.8V and 2.0V, 15pF load 1.5
Measured between 0.8V and 2.0V, 30pF load 2.2
Measured between 0.8V and 2.0V, 15pF load 1.5
All outputs equally loaded 200
Measured at VDD/2 0 ±300
Measured at VDD/2 on OUT0 pins of device 0 600
Measured between 0.8V and 2.0V on -1H device using Test Circuit #2
1 V/ns
Measured at 66.67 MHz, loaded 30pF load 200 ps
Stable power supply, valid clocks presented on CLKIN pin
1.0 ms
V
V
%
ns
pst
3
PS8592D 09/22/04
PI6C2405A
Zero Delay Clock Buffer
DC Electrical Characteristics for Commercial Temperature Devices
Parameter Description Test Conditions Min. Max. Units
V
IL
V
IH
I
IL
I
IH
V
OL
V
OH
I
DD
Input LOW Voltage 0.8
Input HIGH Voltage 2.0
Input LOW Current VIN = 0V 50
Input HIGH Current VIN = V
DD
125
Output LOW Voltage IOL = -8mA(-1); IOL = 12mA(-1H) 0.4
Output HIGH Voltage IOH = -8mA(-1); IOH = -12mA(-1H) 2.4
Supply Current
Unloaded outputs 100 MHz, Select inputs at VDD or GND 54
Unloaded outputs 66.67 MHz, select inputs at VDD or GND 39
µA
mA
AC Electrical Characteristics for Commercial Temperature Devices
Parameter Description Test Conditions Min. Typ. Max. Units
30pF load 10 100
15pF load 10 133
MHz
2.2
Measured between 0.8V and 2.0V
2.2
Measured between 0.8V and 2.0V
All outputs equally loaded 200
Measured at VDD/2 0 ±300
Measured at VDD/2 on OUT0 pins of device 0 600
Measured between 0.8V and 2.0V on -1H device using Test Circuit #2
1 V/ns
Measured at 66.67 MHz, loaded 30pF load 200 ps
Stable power supply, valid clocks presented on CLKIN pin
1.0 ms
t
F
DC
O
Output Frequency
Duty Cycle
Duty Cycle
Rise Time
t
R
Rise Time
Rise Time
Fall Time
t
F
Fall Time
Fall Time
t
sk(o)
Output to Output skew (-1,
-1H)
Input to output delay,
t
0
CLKIN Rising Edge to OUT0 Rising Edge
t
SK(D)
t
SLEW
t
JIT
t
LOCK
Device-to-device skew
Output slew rate
Cycle-to-Cycle Jitter (-1, -1H)
PLL Lock time
(1)
(1)
(-1) Measured at VDD/2, FO < 66 MHz, 30pF load 40 50 60
(1)
(-1H) Measured at VDD/2, FO < 66 MHz, 30pF load 45 50 55
(1)
@ 30pF
(1)
@ 15pF 1.5
(1)
@ 30pF (-1H) 1.5
(1)
@ 30pF
(1)
@ 15pF 1.5
(1)
@ 30pF (-1H) 1.5
(1)
(1)
(1)
(1)
V
V
%
ns
ps
Notes:
1. See Switching Waveforms on page 5.
4
PS8592D 09/22/04
Switching Waveforms
t
low
t
high
VDD/2 VDD/2VDD/2
t
F
t
R
0.8V
2.0V
0.8V
2.0V
OUTPUT
0V
3.3V
VDD/2
VDD/2
VDD/2
VDD/2
VDD/2
VDD/2
t
SK(O)
OUTPUT
OUTPUT
t
0
INPUT
OUTPUT
t
SK(D)
OUTPUT Device 1
OUTPUT Device 2
Duty Cycle Timing
All Outputs Rise/Fall Time
Output-Output Skew
Input-Output Propagation Delay
Device-Device Skew
t
DC =
t
high
t
high+tlow
V
DD
C
LOAD
V
DD
GND GND
CLK out
OUTPUTS
0.1µF
0.1µF
V
DD
10pF
V
DD
GND GND
CLK out
OUTPUTS
0.1µF
0.1µF
1k-ohm
1k-ohm
PI6C2405A
Zero Delay Clock Buffer
Test Circuit for all parameters except t
Test Circuit 1
SLEW
Test Circuit for tSLEW ,Output slew rate on –1H device
Test Circuit 2
5
PS8592D 09/22/04
Packaging Mechanical: 8-Pin SOIC (W)
.0040 .0098
SEATING PLANE
.013 .020
.050
BSC
.016
.0075 .0098
1
8
.0099 .0196
0-8˚
.050
.149 .157
X.XX X.XX
DENOTES DIMENSIONS IN MILLIMETERS
3.78
3.99
.189 .196
4.80
5.00
1.27
.016 .026
1.35
1.75
.2284 .2440
5.80
6.20
0.406
0.660
0.330
0.508
0.10
0.25
0.40
1.27
0.19
0.25
0.25
0.50
x 45˚
.053 .068
REF
PI6C2405A
Zero Delay Clock Buffer
Packaging Mechanical: 8-Pin TSSOP (L)
6
PS8592D 09/22/04
Zero Delay Clock Buffer
Ordering Information for Commercial Operating Ranges
Ordering Code Package Code Package Description
PI6C2405A-1W W 8-pin 150-mil SOIC
PI6C2405A-1WE W Pb-free & Green, 8-pin 150-mil SOIC
PI6C2405A-1HW W 8-pin 150-mil SOIC
PI6C2405A-1HWE W Pb-free & Green, 8-pin 150-mil SOIC
PI6C2405A-1L L 8-pin 173-mil TSSOP
PI6C2405A-1LE L Pb-free & Green, 8-pin 173-mil TSSOP
PI6C2405A-1HL L 8-pin 173-mil TSSOP
PI6C2405A-1HLE L Pb-free & Green, 8-pin 173-mil TSSOP
Ordering Information for Industrial Operating Ranges
Ordering Code Package Code Package Description
PI6C2405A1WI W 8-pin 150-mil SOIC
PI6C2405A-1WIE W Pb-free & Green, 8-pin 150-mil SOIC
PI6C2405A-1HWI W 8-pin 150-mil SOIC
PI6C2405A-1HWIE W Pb-free & Green, 8-pin 150-mil SOIC
PI6C2405A-1LI L 8-pin 173-mil TSSOP
PI6C2405A-1LIE L Pb-free & Green, 8-pin 173-mil TSSOP
PI6C2405A-1HLI L 8-pin 173-mil TSSOP
PI6C2405A-1HLIE L Pb-free & Green, 8-pin 173-mil TSSOP
PI6C2405A
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
7
PS8592D 09/22/04
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