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查询PI6C2408供应商
PI6C2408
Zero-Delay Clock Buffer
Features
• Maximum rated frequency: 140 MHz
• Low cycle-to-cycle jitter
• Input to output delay, less than 150ps
• 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)
• Clock frequency multipliers ½x to 4x dependent on option
• Packaging (Pb-free and Green available):
-16-pin, 150-mil SOIC (W)
-16-pin 173-mil TSSOP (L)
* FB_IN and CLKIN must reference the same voltage thresh-
olds for the PLL to deliver zero delay skewing
Block Diagram
FB_IN
CLKIN
SEL1
SEL2
PI6C2408 (-1, -1H, -2, -3, -4)
÷2
Option (-3, -4)
Decode
Logic
Option (-2, -3)
PLL
MUX
OUTA1
OUTA2
OUTA3
OUTA4
÷2
OUTB1
OUTB2
OUTB3
OUTB4
Description
The PI6C2408 is a PLL-based, zero-delay buffer, with the ability
to distribute eight outputs of up to 140 MHz at 3.3 V. Two banks of
four outputs exist, and, depending on product option ordered, can
supply either reference frequency, prescaled half frequency, or
multiplied 2x or 4x input clock frequencies. The PI6C2408 family has
a power-sparing feature: when input SEL2 is 0, the component will
3-state one or both banks of outputs depending on the state of input
SEL1. A PLL bypass test mode also exists. This product line is
available in high-drive and industrial environment versions.
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 PI6C2408 is characterized for both commercial and industrial
operation.
Pin Configuration
CLKIN
OUTA1
OUTA2
V
DD
GND 5
OUTB1
OUTB2 7
SEL2
1
2
3
4
6
16-Pin
W, L
16
15
14
13
12
11
10
9
FB_IN
OUTA4
OUTA3
V
DD
GND
OUTB4
OUTB3
SEL18
FB_IN
CLKIN
SEL2
SEL1
PI6C2408-6
Decode
Logic
PLL
MUX
÷2
MUX
OUTA1
OUTA2
OUTA3
OUTA4
OUTB1
OUTB2
OUTB3
OUTB4
1
PS8589E 09/15/04
Input Select Decoding for PI6C2408 (-1, -1H,-4)
2LES1LES]4-1[ATUO]4-1[BTUOecruoStuptuOLLP
00 etatS-3etatS-3LLPFFO
01 LLPetatS-3LLPNO
10 NIKLCNIKLCNIKLCFFO
11 LLPLLPLLPNO
Input Select Decoding for PI6C2408 (-2,-3)
2LES1LES]4-1[ATUO]4-1[BTUOecruoStuptuOLLP
00 etatS-3etatS-3LLPFFO
01 LLPetatS-3LLPNO
10 NIKLC2/NIKLCNIKLCFFO
11 LLPLLPLLPNO
PI6C2408
Zero Delay Clock Buffer
Input Select Decoding for PI6C2408-6
2LES1LES]4-1[ATUO]4-1[BTUOecruoStuptuOLLP
00 etatS-3etatS-3LLPFFO
01 NIKLC2/NIKLCNIKLCFFO
10 LLPLLPLLPNO
11 LLP2/LLPLLPNO
PI6C2408 Configurations
eciveDmorFkcabdeeFycneuqerF]4-1[ATUOycneuqerF]4-1[BTUO
1-8042C6IPBTUOroATUONIKLCNIKLC
H1-8042C6IPBTUOroATUONIKLCNIKLC
2-8042C6IPATUONIKLC2/NIKLC
2-8042C6IPBTUONIKLCX2NIKLC
3-8042C6IPATUONIKLCX2NIKLCroNIKLC
3-8042C6IPBTUONIKLCX4NIKLCX2
4-8042C6IPBTUOroATUONIKLCX2NIKLCX2
6-8042C6IPATUONIKLC2/NIKLCroNIKLC
6-8042C6IPBTUONIKLCX2roNIKLCNIKLC
)1(
Note:
1. Output phase is indeterminant (0° or 180° from CLKIN)
2
PS8589E 09/15/04
Zero Delay Clock Buffer
Pin Description
niPlangiSnoitpircseD
1NIKLC )nwod-llupkaew(ycneuqerfecnereferkcolctupnI
51,41,3,2]4-1[ATUO)nwod-llupkaew(AknaB,tuptuokcolC
31,4V
DD
ylppusV3.3
21,5DNGdnuorG
11,01,7,6]4-1[BTUO)nwod-llupkaew(BknaB,tuptuokcolC
82LES)pu-llupkaew(2tib,tupnitceleS
91LES)pu-llupkaew(1tib,tupnitceleS
61NI_BFtupnikcabdeefLLP
Zero Delay and Skew Control
CLKIN Input to Output Bank Delay vs. Difference in Loading between FB_IN pin and OUTA/OUTB pins
800
PI6C2408
600
400
200
0
-25 -20 -15 -10 -5
-200
-400
-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.
0 5 10 15 20 25
PI6C2408-1H
PI6C2408-1,2,3,4,6
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
3
PS8589E 09/15/04
PI6C2408
Zero Delay Clock Buffer
Operating Conditions (V
= 3.3V ±0.3V)
CC
retemaraPnoitpircseD.niM.xaMstinU
V
DD
T
A
egatloVylppuS0.36.3V
erutarepmeTgnitarepOlaciremmoC007
erutarepmeTgnitarepOlairtsudnI04–58
zHM001woleb,ecnaticapaCdaoL
C
L
C
NI
ecnaticapaCtupnI
DC Electrical Characteristics for Industrial Temperature Devices
retemaraPnoitpircseDsnoitidnoCtseT.niM.xaMstinU
V
LI
V
HI
I
LI
I
HI
V
LO
V
HO
egatloVWOLtupnI 8.0
egatloVHGIHtupnI 0.2
tnerruCWOLtupnIV
tnerruCHGIHtupnIV
egatloVWOLtuptuOI
egatloVHGIHtuptuOI
=V00.05
NI
=V
NI
DD
LO
HO
I;)6–,4–,3–,2–,1–(Am8=
I;)6–,4–,3–,2–,1–(Am8–=
Cº
03
51
FpzHM041otzHM001morf,ecnaticapaCdaoL
7
V
µA
0.001
LO
)H1–(Am21=4.0
V
HO
)H1–(Am21–=4.2
I
DD
I
DD
)edomDP(tnerruCylppuSnwDrwP)6–(0=2LES;)H1–,4–,3–,2–,1–(0=1LES0.52
tnerruCylppuS
VtastupnitceleS
DD
,zHM001stuptuodedaolnU
DNGro
0.45
µA
)H1–(0.07
Am
)H1–(tpecxe,NIKLC,zHM66stuptuodedaolnU0.93
)H1–(tpecxe,NIKLC,zHM33stuptuodedaolnU0.02
4
PS8589E 09/15/04
AC Elecrical Characteristics for Industrial Temperature Devices
sretemaraPemaNsnoitidnoCtseT.niM.pyT.xaMstinU
F
O
t
CD
ycneuqerFtuptuO
)1(
elcyCytuD
)6–,4–,3–,2–,1–(
)1(
elcyCytuD
t
R
t
F
t
)O(KS
)1(
emiTesiR
)1(
emiTesiR
)1(
emiTllaF
)1(
emiTllaF
)H1–(
),4–,3–,2–,1–(
)H1–(daolFp03,V0.2dnaV8.0neewtebderusaeM05.1
),4–,3–,2–,1–(
)H1–(daolFp03,V0.2dnaV8.0neewtebderusaeM52.1
nihtiwwekStuptuOottuptuO
)1(
)6–,4–,3–,2–,1–(knaBemas
)1(
wekSBTUOotATUO
)4–,H1–,1–(
)1(
wekSBTUOotATUO
)6–,3–,2–(
t
0
t
)D(KS
t
WELS
t
TIJ
etaRwelStuptuO
egdEgnisiRNIKLC,yaleD
)1(
egdEgnisiRNI_BFot
)1(
wekSeciveD-ot-eciveD
)1(
)1(
rettiJelcyC-ot-elcyC
)4–,H1–,1–(
)1(
rettiJelcyC-ot-elcyC
)6–,3–,2–(
)1(
t
KCOL
emiTkcoLLLP
daolFp03
daolFp51041
VtaderusaeM
VtaderusaeM
VtaderusaeM
VtaderusaeM
VtaderusaeM
VtaderusaeM
F,2/
DD
DD
DD
DD
DD
DD
TUO
F,2/
TUO
F,2/
TUO
F,2/
TUO
F,2/
TUO
F,2/
TUO
dedaolyllauqestuptuollA
VtaderusaeM
2/
DD
VtaderusaeM
DD
2#trCtseTgnisu
PI6C2408
Zero Delay Clock Buffer
0.01
daolFp03zHM76.66<
0.04
daolFp51zHM041<
daolFp03zHM54<0.54
05
daolFp03zHM76.66<0.54
daolFp51zHM041<0.040.06
daolFp03zHM54<0.540.55
daolFp03,V0.2dnaV8.0neewtebderusaeM2.2
daolFp51,V0.2dnaV8.0neewtebderusaeM05.1
daolFp03,V0.2dnaV8.0neewtebderusaeM05.2
daolFp51,V0.2dnaV8.0neewtebderusaeM05.1
0051±
secivedfosnipNI_BFno2/0005
ecivedH1–noV0.2&V8.0neewtebderusaeM
1sn/V
daolFp03dedaol,zHM76.66taderusaeM002
daolFp51dedaol,zHM041taderusaeM001
daolFp03dedaol,zHM76.66taderusaeM004
skcolcdilav,ylppusrewopelbatS
snipNI_BFdnaNIKLCnodetneserp
001
0.06
0.55
002
004
0.1sm
zHM
%
sn
sp
sp
Notes:
1. See Switching Waveforms on page 7.
5
PS8589E 09/15/04
DC Electrical Characteristics for Commercial Temperature Devices
retemaraPnoitpircseDsnoitidnoCtseT.niM.xaMstinU
V
LI
V
HI
I
LI
I
HI
V
LO
V
HO
I
DD
I
DD
I
DD
)edomDP(tnerruCylppuSnwoDrewoP)6-(0=2LES;)H1-,4-,3-,2-,1-(0=1LES
egatloVWOLtupnI
egatloVHGIHtupnI
tnerruCWOLtupnIV
tnerruCHGIHtupnIV
NI
NI
=V0
=V
DD
egatloVWOLtuptuOILOI;)6–,4–,3–,2–,1–(Am8=
egatloVHGIHtuptuOIHOI;)6–,4–,3–,2–,1–(Am8–=
tnerruCylppuSVtastupnitceleS,zHM76.66,stuptuodedaolnU
tnerruCylppuSV@stupnItceleSzHM001stuptuodedaolnU
LO
AC Electrial Characteristics for Commercial Temperature Device
sretemaraPemaNsnoitidnoCtseT.niM.pyT.xaMstinU
F
O
t
CD
ycneuqerFtuptuO
)1(
elcyCytuD
)H1–(VtaderusaeM
elcyCytuD)6–,4–,3–,2–,1–(VtaderusaeM
t
R
t
F
t
)O(KS
)1(
emiTesiR
emiTesiR
emiTesiR
)1(
emiTllaF
)1(
emiTllaF
)1(
emiTllaF
Fp03@
)1(
Fp51@ 5.1
)1(
)H1–(Fp03@ 5.1
Fp03@ 2.2
Fp51@ 5.1
)H1–(Fp03@ 52.1
)1(
wekStuptuOottuptuO
emasnihtiw
)6–,4–,3–,2–,H1–,1–(knab
)1(
wekSBTUOotATUO
)1(
wekSBTUOotATUO
t
0
t
)D(KS
t
WELS
t
TIJ
)1(
etaRwelStuptuO
rettiJelcyC-ot-elcyC
rettiJelcyC-ot-elcyC
)1(
t
KCOL
emiTkcoLLLP
NIKLC,yaleDtuptuOottupnI
)1(
wekSeciveDoteciveD
)1(
)1(
)4–,H1–,1–(V,dedaolyllauqestuptuollA
)6–,3–,2–(V,dedaolyllauqestuptuollA
)1(
egdEgnisiRNI_BFotegdEgnisiR
)4–,H1–,1–(
)6–,3–,2–(stuptuoFp03dedaol,zHM7.66taderusaeM004
daolFp0301001
daolFp51041
DD
DD
V,dedaolyllauqestuptuollA
VtaderusaeM
2/0051±
DD
VtaderusaeM
DD
2#tiucriCtseTgnisuecived
Zero Delay Clock Buffer
)H1–(Am21=
HO
)H1–(Am21–=4.2
DD
DD
DNGro
tuptuoevirdhgihrof,2/540555
tuptuoevirdlamronrof,2/040506
V0.2dnaV8.0neewtebderusaeM
2/002
DD
2/002
DD
2/004
DD
secivedfosnipNI_BFno2/0005
H1–noV0.2dnaV8.0neewtebderusaeM
stuptuoFp03dedaol,zHM76.66taderusaeM002
stuptuoFp51dedaol,zHM041taderusaeM001
skcolcdilav,ylppusrewopelbatS
snipNI_BFdnaNIKLCnodetneserp
DNGro
1sn/V
PI6C2408
8.0
05
001
4.0
21
93
45
2.2
0.1sm
V
µA
V
µA
Am
zHM
%
sn
sp
sp
0.2
Notes:
1. See Switching Waveforms on page 7.
6
PS8589E 09/15/04
Switching Waveforms
PI6C2408
Zero Delay Clock Buffer
Duty Cycle Timing
All Outputs Rise/Fall Time
Output-Output Skew
Device-Device Skew
OUTPUT Device 1
OUTPUT Device 2
Input-Output Propagation Delay
OUTPUT
OUTPUT
OUTPUT
t
HIGH
VDD/2 VDD/2VDD/2
2.0V
0.8V
t
R
VDD/2
VDD/2
t
SK(O)
VDD/2
VDD/2
t
SK(D)
t
LOW
2.0V
0.8V
t
t
HIGH
3.3V
HIGH
+
t
LOW
t
DC =
t
F
0V
0.1µF
0.1µF
V
DD
OUTPUTS
V
DD
GND GND
INPUT
FB_IN
CLK out
C
LOAD
VDD/2
VDD/2
0.1µF
0.1µF
t
0
V
DD
1k-ohm
CLK out
OUTPUTS
1k-ohm
V
DD
10pF
GND GND
7
PS8589E 09/15/04
16-Pin SOIC (W) Package
16
.149
.157
3.78
3.99
.0099
.0196
0.25
0.50
PI6C2408
Zero Delay Clock Buffer
x 45˚
1
.386
.393
9.80
10.00
.0155
.0260
0.393
0.660
REF
.050
BSC
1.27
16-Pin TSSOP (L) Package
16
.013
.020
0.330
0.508
.053
.068
.169
.177
.0040
.0098
1.35
1.75
4.3
4.5
SEATING PLANE
0.10
0.25
X.XX
DENOTES DIMENSIONS
X.XX
IN MILLIMETERS
0-8˚
0.41
1.27
.2284
.2440
5.80
6.20
.016
.050
.0075
.0098
0.19
0.25
1
.193
.201
4.9
5.1
.047
max.
1.20
SEATING
PLANE
.002
0.05
.006
.0256
BSC
0.65
.007
.012
0.19
0.15
0.30
Note: Controlling dimensions in millimeters. Ref: JEDEC MS - 012 AC
8
0.45
0.75
.252
BSC
6.4
X.XX
DENOTES CONTROLLING
X.XX
DIMENSIONS IN MILLIMETERS
.018
.030
0.09
.004
0.20
.008
PS8589E 09/15/04
Zero Delay Clock Buffer
Ordering Information (Commercial Temperature Device)
Ordering Code Package Description Operating Range
PI6C2408-1W W 16-pin 150-mil SOIC Commercial
PI6C2408-1WE W Pb-free & Green, 16-pin 150-mil SOIC Commercial
PI6C2408-1HW W 16-pin 150-mil SOIC Commercial
PI6C2408-1HWE W Pb-free & Green, 16-pin 150-mil SOIC Commercial
PI6C2408-2W W 16-pin 150-mil SOIC Commercial
PI6C2408-2WE W Pb-free & Green, 16-pin 150-mil SOIC Commercial
PI6C2408-3W W 16-pin 150-mil SOIC Commercial
PI6C2408-3WE W Pb-free & Green, 16-pin 150-mil SOIC Commercial
PI6C2408-4W W 16-pin 150-mil SOIC Commercial
PI6C2408-4WE W Pb-free & Green, 16-pin 150-mil SOIC Commercial
PI6C2408-6W W 16-pin 150-mil SOIC Commercial
PI6C2408-6WE W Pb-free & Green, 16-pin 150-mil SOIC Commercial
PI6C2408-1WE W Pb-free & Green 16-pin 150-mil SOIC Commercial
PI6C2408-1HWE W Pb-free & Green 16-pin 150-mil SOIC Commercial
PI6C2408-1L L 16-pin 173-mil TSSOP Commercial
PI6C2408-1LE L Pb-free & Green, 16-pin 173-mil TSSOP Commercial
PI6C2408-1HL L 16-pin 173-mil TSSOP Commercial
PI6C2408-1HLE L Pb-free & Green, 16-pin 173-mil TSSOP Commercial
PI6C2408-3L L 16-pin 173-mil TSSOP Commercial
PI6C2408-3LE L Pb-free & Green, 16-pin 173-mil TSSOP Commercial
PI6C2408-4L L 16-pin 173-mil TSSOP Commercial
PI6c2408-4LE L Pb-free & Green, 16-pin 173-mil TSSOP Commercial
PI6C2408-1LE L Pb-free & Green 16-pin 173-mil TSSOP Commercial
PI6C2408-1HLE L Pb-free & Green 16-pin 173-mil TSSOP Commercial
PI6C2408
9
PS8589E 09/15/04
Zero Delay Clock Buffer
Ordering Information (Industrial Temperature Device)
Ordering Code Package Description Operating Range
PI6C2408-1WI W 16-pin 150-mil SOIC Industrial
PI6C2408-1WIE W Pb-free & Green, 16-pin 150-mil SOIC Industrial
PI6C2408-1HWI W 16-pin 150-mil SOIC Industrial
PI6C2408-1HWIE W Pb-free & Green, 16-pin 150-mil SOIC Industrial
PI6C2408-2WI W 16-pin 150-mil SOIC Industrial
PI6C2408-2WIE W Pb-free & Green, 16-pin 150-mil SOIC Industrial
PI6C2408-4WI W 16-pin 150-mil SOIC Industrial
PI6C2408-4WIE W Pb-free & Green, 16-pin 150-mil SOIC Industrial
PI6C2408-6WI W 16-pin 150-mil SOIC Industrial
PI6C2408-6WIE W Pb-free & Green, 16-pin 150-mil SOIC Industrial
PI6C2408-1LI L 16-pin 173-mil TSSOP Industrial
PI6C2408-1LIE L Pb-free & Green, 16-pin 173-mil TSSOP Industrial
PI6C2408-6LI L 16-pin 173-mil TSSOP Industrial
PI6C2408-6LIE L Pb-free & Green, 16-pin 173-mil TSSOP Industrial
PI6C2408
Notes:
1. Thermal characteristics can be found on the company web site at www.pericom.com/packaging/
Pericom Semiconductor Corporation • 1-800-435-2336 • www.pericom.com
10
PS8589E 09/15/04
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