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8523BGILFT

Description
IC clk buffer 2:4 650mhz 20tssop
Categorysemiconductor    Analog mixed-signal IC   
File Size456KB,17 Pages
ManufacturerIDT (Integrated Device Technology, Inc.)
Websitehttp://www.idt.com/
Environmental Compliance  
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8523BGILFT Overview

IC clk buffer 2:4 650mhz 20tssop

DATA SHEET
LOW SKEW,
BUFFER
Integrated
1-TO-4 DIFFERENTIAL-TO-HSTL
Circuit
Systems, Inc.
L
OW
S
KEW
, 1-
TO
-4
D
IFFERENTIAL
-
TO
-HSTL F
ANOUT
B
UFFER
FANOUT
ICS8523I
ICS8523I
G
ENERAL
D
ESCRIPTION
The ICS8523I is a low skew, high perfor-
mance 1-to-4 Differential-to-HSTL fanout buffer
HiPerClockS™
and a member of the HiPerClockS™family of High
Performance Clock Solutions from ICS. The
ICS8523I has two selectable clock inputs. The
CLK, nCLK pair can accept most standard differential input
levels. The PCLK, nPCLK pair can accept LVPECL, CML, or
SSTL input levels. The clock enable is internally synchronized
to eliminate runt pulses on the outputs during asynchronous
assertion/deassertion of the clock enable pin.
F
EATURES
4 differential HSTL compatible outputs
Selectable diffferential CLK, nCLK or LVPECL clock inputs
CLK, nCLK pair can accept the following differential
input levels: LVDS, LVPECL, HSTL, SSTL, HCSL
PCLK, nPCLK supports the following input types:
LVPECL, CML, SSTL
Maximum output frequency: 650MHz
Translates any single-ended input signal to HSTL
levels with resistor bias on nCLK input
Output skew: 50ps (maximum)
Part-to-part skew: 250ps (maximum)
Propagation delay: 1.6ns (maximum)
3.3V core, 1.8V output operating supply
Lead-Free package available
-40°C to 85°C ambient operating temperature
ICS
Guaranteed output and part-to-part skew characteristics
make the ICS8523I ideal for those applications demanding
well defined performance and repeatability.
B
LOCK
D
IAGRAM
CLK_EN
D
Q
LE
CLK
nCLK
PCLK
nPCLK
0
1
Q0
nQ0
Q1
nQ1
Q2
nQ2
Q3
nQ3
P
IN
A
SSIGNMENT
GND
CLK_EN
CLK_SEL
CLK
nCLK
PCLK
nPCLK
nc
nc
V
DD
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
Q0
nQ0
V
DDO
Q1
nQ1
Q2
nQ2
V
DDO
Q3
nQ3
CLK_SEL
ICS8523I
20-Lead TSSOP
6.5mm x 4.4mm x 0.92mm body package
G Package
Top View
8523BGI
www.icst.com/products/hiperclocks.html
1
REV. C SEPTEMBER 16, 2004
IDT™ / ICS™
LOW SKEW, 1-TO-4 DIFFERENTIAL-TO-HSTL FANOUT BUFFER
1
ICS8523I

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