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9ZX21201AKLFT

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16
IDT
®
12-Output Differential Z-buffer for PCIe Gen2/3 and QPI 1682D- 11/19/15
9ZX21201
12-Output Differential Z-buffer 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
®
12-Output Differential Z-buffer for PCIe Gen2/3 and QPI 1682D- 11/19/15
9ZX21201
12-Output Differential Z-buffer 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
®
12-Output Differential Z-buffer for PCIe Gen2/3 and QPI 1682D- 11/19/15
9ZX21201
12-Output Differential Z-buffer for PCIe Gen2/3 and QPI
15
DIMENSIONS DIMENSIONS (mm)
SYMBOL MIN. MAX.
A0.81.0
N64 A1 00.05
N
D
16 A3
N
E
16 b 0.18 0.3
e
D x E BASIC
D2 MIN. / MAX. 6.00 6.25
E2 MIN. / MAX. 6.00 6.25
L MIN. / MAX. 0.30 0.50
THERMALLY ENHANCED, VERY THIN, FINE PITCH
QUAD FLAT / NO LEAD PLASTIC PACKAGE
SYMBOL 64L
0.25 Reference
0.50 BASIC
9.00 x 9.00
Ordering Information
Part / Order Number Shipping Package Package Temperature Difference
9ZX21201AKLF Trays 64-pin MLF 0 to +70°C
9ZX21201AKLFT Tape and Reel 64-pin MLF 0 to +70°C
9ZX21201BKLF Trays 64-pin MLF 0 to +70°C
9ZX21201BKLFT Tape and Reel 64-pin MLF 0 to +70°C
"LF" designates PB-free configuration, RoHS compliant.
"A and B" are the device revision designators (will not correlate with the datasheet revision).
W/O Byte 0 PLL Control
With Byte 0 PLL Mode
Control
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16

9ZX21201AKLFT

Mfr. #:
Buy 9ZX21201AKLFT
Manufacturer:
IDT
Description:
Clock Buffer HIGH PERF. ZDB
Lifecycle:
New from this manufacturer.
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