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8761CYLF

Description
Clock Generators u0026 Support Products 17 LVCMOS OUT CLOCK GEN
Categorysemiconductor    Analog mixed-signal IC   
File Size210KB,16 Pages
ManufacturerIDT (Integrated Device Technology, Inc.)
Websitehttp://www.idt.com/
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8761CYLF Overview

Clock Generators u0026 Support Products 17 LVCMOS OUT CLOCK GEN

8761CYLF Parametric

Parameter NameAttribute value
Product CategoryClock Generators & Support Products
ManufacturerIDT (Integrated Device Technology, Inc.)
RoHSDetails
Package / CaseTQFP-64
PackagingTray
Height1.4 mm
Length10 mm
Factory Pack Quantity160
Width10 mm
Unit Weight0.012720 oz
Low Voltage, Low Skew,
PCI / PCI-X Clock Generator
G
ENERAL
D
ESCRIPTION
The 8761 is a low voltage, low skew PCI /
PCI-X Clock Generator. The 8761 has a selectable REF_
CLK or crystal input. The REF_CLK input accepts LVC-
MOS or LVTTL input levels. The 8761 has a fully int-
grated PLL along with frequency configurable clock and
feedback outputs for multiplying and regenerating clocks
with “zero delay”. Using a 20MHz or 25MHz crystal or a
33.333MHz or 66.666MHz reference frequency, the 8761 will
generate output frequencies of 33.333MHz, 66.666MHz,
100MHz and 133.333MHz simultaneously.
The low impedance LVCMOS/LVTTL outputs of the 8761
are designed to drive 50Ω series or parallel terminated
transmission lines.
8761
DATASHEET
F
EATURES
Fully integrated PLL
Seventeen LVCMOS/LVTTL outputs,
15Ω typical output impedance
Selectable crystal oscillator interface or
LVCMOS/LVTTL REF_CLK
Maximum output frequency: 166.67MHz
Maximum crystal input frequency: 38MHz
Maximum REF_CLK input frequency: 83.33MHz
Individual banks with selectable output dividers for
generating 33.333MHz, 66.66MHz, 100MHz and
133.333MHz simultaneously
Separate feedback control for generating PCI / PCI-X
frequencies from a 20MHz or 25MHz crystal or 33.333MHz
or 66.666MHz reference frequency
Cycle-to-cycle jitter: 70ps (maximum)
Period jitter, RMS: 17ps (maximum)
Output skew: 230ps (maximum)
Bank skew: 40ps (maximum)
Static phase offset: 0 ± 150ps (maximum)
Full 3.3V or 3.3V core, 2.5V multiple output supply modes
0°C to 85°C ambient operating temperature
Available in lead-free RoHS-compliant package
B
LOCK
D
IAGRAM
P
IN
A
SSIGNMENT
V
DDOC
V
DDOC
V
DDOD
V
DDOD
GND
GND
GND
GND
QC0
QC1
QC2
QC3
QD0
QD1
QD2
64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49
48
47
46
45
44
43
42
QD3
GND
FB_OUT
V
DDOFB
FB_IN
V
DD
FBDIV_SEL0
FBDIV_SEL1
MR
V
DD
D_SELD0
D_SELD1
OED
OEB
D_SELB0
D_SELB1
GND
41
40
39
38
37
36
35
34
QB3
REF_CLK
GND
XTAL1
XTAL2
V
DD
XTAL_SEL
PLL_SEL
V
DDA
V
DD
D_SELC0
D_SELC1
OEC
OEA
D_SELA0
D_SELA1
GND
1
2
3
4
5
6
7
8
9
8761
10
11
12
13
14
15
16
33
17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
QA1
QA2
QA3
QB0
QB1
QA0
V
DDOA
V
DDOA
GND
GND
V
DDOB
GND
QB2
V
DDOB
GND
64-Lead LQFP
10mm x 10mm x 1.4mm package body
Y package
Top View
8761 REVISION E 2/18/15
1
©2015 Integrated Device Technology, Inc.

8761CYLF Related Products

8761CYLF 8761CYLFT
Description Clock Generators u0026 Support Products 17 LVCMOS OUT CLOCK GEN Clock Generators u0026 Support Products 17 LVCMOS OUT CLOCK GEN
Product Category Clock Generators & Support Products Clock Generators & Support Products
Manufacturer IDT (Integrated Device Technology, Inc.) IDT (Integrated Device Technology, Inc.)
RoHS Details Details
Package / Case TQFP-64 TQFP-64
Packaging Tray Reel
Height 1.4 mm 1.4 mm
Length 10 mm 10 mm
Factory Pack Quantity 160 500
Width 10 mm 10 mm
Unit Weight 0.012720 oz 0.012720 oz
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