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IDT8T79S818I-08 fiches techniques PDF

Integrated Device Technology - 1-to-8 Differential to Universal Output Clock Divider/Fanout Buffer

Numéro de référence IDT8T79S818I-08
Description 1-to-8 Differential to Universal Output Clock Divider/Fanout Buffer
Fabricant Integrated Device Technology 
Logo Integrated Device Technology 





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IDT8T79S818I-08 fiche technique
1-to-8 Differential to Universal Output
Clock Divider/Fanout Buffer
IDT8T79S818I-08
DATASHEET
General Description
The IDT8T79S818I-08 is a high performance, 1-to-8, differential input
to universal output clock divider and fanout buffer. The device is
designed for frequency-division and signal fanout of high-frequency
clock signals in applications requiring four different output
frequencies generated simultaneously. Each bank of two outputs has
a selectable divider value of ÷1 through ÷6 and ÷8. The
IDT8T79S818I-08 is optimized for 3.3V and 2.5V supply voltages and
a temperature range of -40°C to 85°C. The device is packaged in a
space-saving 32 lead VFQFN package.
Features
Four banks of two low skew outputs
Selectable bank output divider values: ÷1 through ÷6 and ÷8
One differential PCLK, nPCLK input
PCLK, nPCLK input pair can accept the following differential input
levels: LVPECL, LVDS levels
Maximum input frequency: 1.5GHz
LVCMOS control inputs
QXx ÷1 edge aligned to QXx ÷n edge
Individual output divider control via serial interface
Individual output enable/disable control via serial interface
Individual output type control, LVDS or LVPECL, via serial
interface
2.375V to 3.465V supply voltage operation
-40°C to 85°C ambient operating temperature
Lead-free (RoHS 6) packaging
Pin Assignment
Block Diagram
VCC
VCC 25
VEE 26
nQA1 27
QA1 28
nQA0 29
QA0 30
VCC 31
SDATA 32
IDT8T79S818I-08
32 lead VFQFN
5mm x 5mm x 0.925mm
Pad size 3.15mm x 3.15mm
NL package
Top View
16 VCC
15 VEE
14 QD0
PCLK Pulldown
nPCLK Pullup/Pulldown
VEE VEE
13 nQD0
12 QD1
11 nQD1
10 VCC
PWR_SEL Pulldown
9 PWR_SEL
VEE
Dividers
RST
7
nRST Pullup
OE Pulldown
LE Pulldown
SCLK Pulldown
SDATA Pulldown
VCC
D ivid e r S e le ct,
Output Type and
O utput Enable
logic
VEE VEE VEE VEE
12
10
QA0
nQA0
QA1
nQA1
QB0
nQB0
QB1
nQB1
QC0
nQC0
QC1
nQC1
QD0
nQD0
QD1
nQD1
MISO
IDT8T79S818A-08NLGI REVISION A JULY 11, 2013
1
©2013 Integrated Device Technology, Inc.

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