ics8308agit Integrated Device Technology, ics8308agit Datasheet

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ics8308agit

Manufacturer Part Number
ics8308agit
Description
Lvcmos/differential-input Lvcmos-output 1 8 350-mhz Clock Buffer
Manufacturer
Integrated Device Technology
Datasheet
LOW SKEW, 1-TO-8 DIFFERENTIAL/
LVCMOS-TO-LVCMOS FANOUT BUFFER
G
The LVCMOS_CLK can accept LVCMOS or LVTTL input levels.
The low impedance LVCMOS/LVTTL outputs are designed to
drive 50
effective fanout can be increased from 8 to 16 by utilizing the
ability of the outputs to drive two series terminated trans-
mission lines.
The ICS8308I is characterized for 3.3V core/3.3V output,
3.3V core/2.5V output or 2.5V core/2.5V output operation.
Guaranteed output and part-part skew characteristics make
the 8308I ideal for those clock distribution applications requiring
well defined performance and repeatability.
B
IDT
LVCMOS_CLK
LOCK
ENERAL
CLK_SEL
/ ICS
CLK_EN
nCLK
CLK
OE
series or parallel terminated transmission lines. The
LVCMOS FANOUT BUFFER
D
The ICS8308I is a low-skew, 1-to-8 Fanout Buffer
and a member of the
Perfor mance Clock Solutions from IDT. The
ICS8308I has two selectable clock inputs. The CLK,
nCLK pair can accept most differential input levels.
Pullup
Pullup
Pullup
Pulldown
Pullup
Pullup
IAGRAM
D
ESCRIPTION
1
0
D
LE
HiPerClockS™
Q
family of High
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
1
P
F
IN
Eight LVCMOS/LVTTL outputs, (7
Selectable LVCMOS_CLK or differential CLK, nCLK inputs
CLK, nCLK pair can accept the following differential
input levels: LVPECL, LVDS, LVHSTL, SSTL, HCSL
Maximum Output Frequency: 350MHz
Output Skew: (3.3V± 5%): 100ps (maximum)
Part to Part Skew: (3.3V± 5%): 1ns (maximum)
Supply Voltage Modes:
(Core/Output)
3.3V/2.5V
-40°C to 85°C ambient operating temperature
Available in both standard (RoHS 5) and lead-free (RoHS 6)
packages
EATURES
3.3V/3.3V
2.5V/2.5V
A
SSIGNMENT
4.4mm x 7.8mm x 0.925mm body package
LVCMOS_CLK
CLK_SEL
CLK_EN
24-Lead, 173-MIL TSSOP
nCLK
GND
GND
V
CLK
V
DDO
OE
Q0
Q1
DD
ICS8308I
G Package
ICS8308AGI REV. B OCTOBER 16, 2007
1
2
3
4
5
6
7
8
9
10
11
12
Top View
24
23
22
21
20
19
18
17
16
15
14
13
V
Q2
GND
Q3
V
Q4
GND
Q5
V
Q6
GND
Q7
typical output impedance)
DDO
DDO
DDO
ICS8308I

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ics8308agit Summary of contents

Page 1

LOW SKEW, 1-TO-8 DIFFERENTIAL/ LVCMOS-TO-LVCMOS FANOUT BUFFER G D ENERAL ESCRIPTION The ICS8308I is a low-skew, 1-to-8 Fanout Buffer and a member of the HiPerClockS™ Perfor mance Clock Solutions from IDT. The ICS8308I has two selectable clock inputs. The CLK, ...

Page 2

ICS8308I LOW SKEW, 1-TO-8 DIFFERENTIAL/LVCMOS-TO-LVCMOS FANOUT BUFFER ABLE IN ESCRIPTIONS ...

Page 3

ICS8308I LOW SKEW, 1-TO-8 DIFFERENTIAL/LVCMOS-TO-LVCMOS FANOUT BUFFER BSOLUTE AXIMUM ATINGS Supply Voltage Inputs, V -0. Outputs, V -0. Package Thermal Impedance, JA Storage Temperature, T -65°C to 150°C STG ...

Page 4

ICS8308I LOW SKEW, 1-TO-8 DIFFERENTIAL/LVCMOS-TO-LVCMOS FANOUT BUFFER T 4D ABLE HARACTERISTICS ...

Page 5

ICS8308I LOW SKEW, 1-TO-8 DIFFERENTIAL/LVCMOS-TO-LVCMOS FANOUT BUFFER T 4F ABLE HARACTERISTICS ...

Page 6

ICS8308I LOW SKEW, 1-TO-8 DIFFERENTIAL/LVCMOS-TO-LVCMOS FANOUT BUFFER T 5B 3.3V±5%, V ABLE HARACTERISTICS ...

Page 7

ICS8308I LOW SKEW, 1-TO-8 DIFFERENTIAL/LVCMOS-TO-LVCMOS FANOUT BUFFER T 5C ABLE HARACTERISTICS ...

Page 8

ICS8308I LOW SKEW, 1-TO-8 DIFFERENTIAL/LVCMOS-TO-LVCMOS FANOUT BUFFER P ARAMETER 1.65V± DDO LVCMOS GND -1.65V±5% 3.3V C /3. ORE UTPUT OAD EST 1.25V± DDO LVCMOS GND -1.25V±5% 2.5V C ...

Page 9

ICS8308I LOW SKEW, 1-TO-8 DIFFERENTIAL/LVCMOS-TO-LVCMOS FANOUT BUFFER 3.3V DD DDO 0.8V Clock t Outputs DDO V = 3.3V 2.5V 0.6V DD DDO Clock t ...

Page 10

ICS8308I LOW SKEW, 1-TO-8 DIFFERENTIAL/LVCMOS-TO-LVCMOS FANOUT BUFFER IRING THE IFFERENTIAL NPUT TO Figure 1 shows how the differential input can be wired to accept single ended levels. The reference voltage V_REF = V generated by the bias ...

Page 11

ICS8308I LOW SKEW, 1-TO-8 DIFFERENTIAL/LVCMOS-TO-LVCMOS FANOUT BUFFER IFFERENTIAL LOCK NPUT NTERFACE The CLK /nCLK accepts LVDS, LVPECL, LVHSTL, SSTL, HCSL and other differential signals. Both V SWING V and V input requirements. Figures ...

Page 12

ICS8308I LOW SKEW, 1-TO-8 DIFFERENTIAL/LVCMOS-TO-LVCMOS FANOUT BUFFER S E CHEMATIC XAMPLE Figure 3 shows a schematic example of the ICS8308I. In this example, the LVCMOS_CLK input is selected. The decoupling VDD Ohm Ohm R11 ...

Page 13

ICS8308I LOW SKEW, 1-TO-8 DIFFERENTIAL/LVCMOS-TO-LVCMOS FANOUT BUFFER ACKAGE UTLINE UFFIX FOR IDT ™ / ICS ™ LVCMOS FANOUT BUFFER TSSOP EAD ABLE ACKAGE IMENSIONS ...

Page 14

... While the information presented herein has been checked for both accuracy and reliability, Integrated Device Technology, Incorporated (IDT) assumes no responsibility for either its use or for infringement of any patents or other rights of third parties, which would result from its use. No other circuits, patents, or licenses are implied. This product is intended for use in normal commercial and industrial applications ...

Page 15

ICS8308I LOW SKEW, 1-TO-8 DIFFERENTIAL/LVCMOS-TO-LVCMOS FANOUT BUFFER ...

Page 16

... Integrated Device Technology, Inc. All rights reserved. Product specifications subject to change without notice. IDT, the IDT logo, ICS and HiPerClockS are trademarks of Integrated Device Technology, Inc. Accelerated Thinking is a service mark of Integrated Device Technology, Inc. All other brands, product names and marks are or may be trademarks or registered trademarks used to identify products or services of their respective owners ...

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