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9ZX21901CKLF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16
IDT
®
19-Output Differential Zbuffer for PCIe Gen2/3 and QPI 1648H- 12/08/11
9ZX21901C
19-Output Differential Zbuffer for PCIe Gen2/3 and QPI
13
Common Recommendations for Differential Routing Dimension or Value Unit Figure
L1 length, route as non-coupled 50ohm trace 0.5 max inch 1
L2 length, route as non-coupled 50ohm trace 0.2 max inch 1
L3 length, route as non-coupled 50ohm trace 0.2 max inch 1
Rs 33 ohm 1
Rt 49.9 ohm 1
Down Device Differential Routing
L4 length, route as coupled microstrip 100ohm differential trace 2 min to 16 max inch 1
L4 length, route as coupled stripline 100ohm differential trace 1.8 min to 14.4 max inch 1
Differential Routing to PCI Express Connector
L4 length, route as coupled microstrip 100ohm differential trace 0.25 to 14 max inch 2
L4 length, route as coupled stripline 100ohm differential trace 0.225 min to 12.6 max inch 2
DIF Reference Clock
HCSL Output Buffer
L1
L1'
Rs
L2
L2'
Rs
L4'
L4
L3L3'
Rt Rt
PCI Express
Down Device
REF_CLK Input
Figure 1: Down Device Routing
HCSL Output Buffer
L1
L1'
Rs
L2
L2'
Rs
L4'
L4
L3L3'
Rt Rt
PCI Express
Add-in Board
REF_CLK Input
Figure 2: PCI Express Connector Routing
IDT
®
19-Output Differential Zbuffer for PCIe Gen2/3 and QPI 1648H- 12/08/11
9ZX21901C
19-Output Differential Zbuffer for PCIe Gen2/3 and QPI
14
Vdiff Vp-p Vcm R1 R2 R3 R4 Note
0.45v 0.22v 1.08 33 150 100 100
0.58 0.28 0.6 33 78.7 137 100
0.80 0.40 0.6 33 78.7 none 100 ICS874003i-02 input compatible
0.60 0.3 1.2 33 174 140 100 Standard LVDS
R1a = R1b = R1
R2a = R2b = R2
Alternative Termination for LVDS and other Common Differential Signals (figure 3)
HCSL Output Buffer
L1
L1'
R1b
L2
L2'
R1a
L4'
L4
L3
R2a R2b
Down Device
REF_CLK Input
Figure 3
L3'
R3 R4
Component Value Note
R5a, R5b 8.2K 5%
R6a, R6b 1K 5%
Cc 0.1 µF
Vcm 0.350 volts
Cable Connected AC Coupled Application (figure 4)
PCIe Device
REF_CLK Input
Figure 4
R5a
L4'
L4
3.3 Volts
R5b
R6a R6b
Cc
Cc
IDT
®
19-Output Differential Zbuffer for PCIe Gen2/3 and QPI 1648H- 12/08/11
9ZX21901C
19-Output Differential Zbuffer for PCIe Gen2/3 and QPI
15
E
Top View
OR
Anvil
Singulation
A3
L
N
(Ref.)
e
e
e
e
(Ref. )
(Ref. )
(Ref. )
(Typ.)
If
A1
Even
E2
D2
D2
2
A
C
0.08
C
E2
2
2
2
1
Sawn
Singulation
Index Area
Seating Plane
are Even
Thermal
Base
Odd
b
(N - 1)x
N
1
Chamfer 4x
0.6 x 0.6 max
OPTIONAL
D
D
&
&N
D
N
D
N
E
N
E
&N
D
N
E
(N - 1)x
E
SYMBOL 72L
N72 A0.81.0
N
D
18 A1 0 0.05
N
E
18 A3
b 0.18 0.3
e
D x E BASIC
D2 MIN. / MAX. 5.75 6.15
E2 MIN. / MAX. 5.75 6.15
L MIN. / MAX. 0.3 0.5
MAX.
0.25 Reference
0.50 BASIC
10.00 x 10.00
DIMENSIONS
THERMALLY ENHANCED, VERY THIN, FINE PITCH
QUAD FLAT / NO LEAD PLASTIC PACKAGE
DIMENSIONS (mm)
SYMBOL MIN.
Ordering Information
Part / Order Number Shipping Package Package Temperature
9ZX21901CKLF Trays 72-pin MLF 0 to +70°C
9ZX21901CKLFT Tape and Reel 72-pin MLF 0 to +70°C
"LF" designates PB-free configuration, RoHS compliant.
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16

9ZX21901CKLF

Mfr. #:
Buy 9ZX21901CKLF
Manufacturer:
IDT
Description:
Clock Buffer PCIE BUFFER - Z TECH
Lifecycle:
New from this manufacturer.
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