8545BGILFT IDT, Integrated Device Technology Inc, 8545BGILFT Datasheet

8545BGILFT

Manufacturer Part Number
8545BGILFT
Description
Manufacturer
IDT, Integrated Device Technology Inc
Type
Clock Driverr
Datasheet

Specifications of 8545BGILFT

Number Of Clock Inputs
2
Mode Of Operation
Single-Ended
Output Frequency
650MHz
Output Logic Level
LVDS
Operating Supply Voltage (min)
3.135V
Operating Supply Voltage (typ)
3.3V
Operating Supply Voltage (max)
3.465V
Package Type
TSSOP
Operating Temp Range
-40C to 85C
Operating Temperature Classification
Industrial
Signal Type
LVCMOS/LVTTL
Mounting
Surface Mount
Pin Count
20
Lead Free Status / RoHS Status
Compliant
LOW SKEW, 1-TO-4 LVCMOS/LVTTL-TO-LVDS
FANOUT BUFFER
General Description
the ICS8545I provides a low power, low noise, solution for
distributing clock signals over controlled impedances of 100Ω. The
ICS8545I accepts a LVCMOS/LVTTL input level and translates it
to 3.3V LVDS output levels.
Guaranteed output and part-to-part skew characteristics make the
ICS8545I ideal for those applications demanding well defined
performance and repeatability.
Block Diagram
IDT™ / ICS™ LVDS FANOUT BUFFER
CLK_SEL
HiPerClockS™
ICS
CLK_EN
CLK1
CLK2
OE
Pullup
Pulldown
Pulldown
Pulldown
Pullup
The ICS8545I is a low skew, high performance
1-to-4 LVCMOS/LVTTL-to-LVDS Clock Fanout
Buffer and a member of the HiPerClockS™ family of
High Performance Clock Solutions from IDT.
Utilizing Low Voltage Differential Signaling (LVDS)
0
1
0
1
nD
LE
Q
Q0
Q0
Q1
Q1
Q2
Q2
Q3
Q3
1
Features
Four differential LVDS output pairs
Two LVCMOS/LVTTL clock inputs to support redundant
or selectable frequency fanout applications
Maximum output frequency: 650MHz
Translates LVCMOS/LVTTL input signals to LVDS levels
Output skew: 40ps (maximum)
Part-to-part skew: 500ps (maximum)
Propagation delay: 3.6ns (maximum)
Additive phase jitter, RMS: 0.13ps (typical)
Full 3.3Vsupply mode
-40°C to 85°C ambient operating temperature
Available in both standard (RoHS 5) and lead-free (RoHS 6)
packages
Pin Assignment
6.5mm x 4.4mm x 0.925
CLK_SEL
CLK_EN
CLK1
CLK2
GND
GND
V
20-Lead TSSOP
OE
package body
DD
nc
nc
G Package
Top View
ICS8545I
1
2
3
4
5
6
7
8
9
10
ICS8545BGI REV. B MARCH 02, 2009
20
19
18
17
16
15
14
13
12
11
Q0
V
Q1
Q1
Q2
Q3
Q0
Q2
Q3
DD
mm
ICS8545I

Related parts for 8545BGILFT

8545BGILFT Summary of contents

Page 1

LOW SKEW, 1-TO-4 LVCMOS/LVTTL-TO-LVDS FANOUT BUFFER General Description The ICS8545I is a low skew, high performance ICS 1-to-4 LVCMOS/LVTTL-to-LVDS Clock Fanout Buffer and a member of the HiPerClockS™ family of HiPerClockS™ High Performance Clock Solutions from IDT. Utilizing Low Voltage ...

Page 2

ICS8545I LOW SKEW, 1-TO-4, LVCMOS/LVTTL-TO-LVDS FANOUT BUFFER Table 1. Pin Descriptions Number Name GND Power 2 CLK_EN Input 3 CLK_SEL Input 4 CLK1 Input Unused 6 CLK2 Input 8 OE Input 10 ...

Page 3

ICS8545I LOW SKEW, 1-TO-4, LVCMOS/LVTTL-TO-LVDS FANOUT BUFFER Function Tables Table 3A. Control Input Function Table OE CLK_EN After CLK_EN switches, the clock outputs are disabled or enabled following a rising ...

Page 4

ICS8545I LOW SKEW, 1-TO-4, LVCMOS/LVTTL-TO-LVDS FANOUT BUFFER Absolute Maximum Ratings NOTE: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These ratings are stress specifications only. Functional operation of product at these conditions or ...

Page 5

ICS8545I LOW SKEW, 1-TO-4, LVCMOS/LVTTL-TO-LVDS FANOUT BUFFER Table 4C. LVDS DC Characteristics, V Symbol Parameter V Differential Output Voltage OD ∆V V Magnitude Change Offset Voltage OS ∆V V Magnitude Change High Impedance Leakage ...

Page 6

ICS8545I LOW SKEW, 1-TO-4, LVCMOS/LVTTL-TO-LVDS FANOUT BUFFER Additive Phase Jitter The spectral purity in a band at a specific offset from the fundamental compared to the power of the fundamental is called the dBc Phase Noise. This value is normally ...

Page 7

ICS8545I LOW SKEW, 1-TO-4, LVCMOS/LVTTL-TO-LVDS FANOUT BUFFER Parameter Measurement Information V DD 3.3V±5% POWER SUPPLY LVDS + – Float GND 3.3V LVDS Output Load AC Test Circuit Par Par tsk(pp) Part-to-Part Skew ...

Page 8

ICS8545I LOW SKEW, 1-TO-4, LVCMOS/LVTTL-TO-LVDS FANOUT BUFFER Parameter Measurement Information, continued 80% Clock 20% Outputs t R Output Rise/Fall Time V DD LVDS DC Input ➤ Offset Voltage Setup 3.3V±5% POWER SUPPLY LVDS Inpu Float GND + ...

Page 9

ICS8545I LOW SKEW, 1-TO-4, LVCMOS/LVTTL-TO-LVDS FANOUT BUFFER Parameter Measurement Information, continued V DD LVDS DC Input Output Short Circuit Current Setup Application Information Recommendations for Unused Input and Output Pins Inputs: CLK Inputs For applications not requiring the use of ...

Page 10

ICS8545I LOW SKEW, 1-TO-4, LVCMOS/LVTTL-TO-LVDS FANOUT BUFFER 3.3V LVDS Driver Termination A general LVDS interface is shown in Figure 100Ω differential transmission line environment, LVDS drivers require a matched load termination of 100Ω across near the receiver ...

Page 11

ICS8545I LOW SKEW, 1-TO-4, LVCMOS/LVTTL-TO-LVDS FANOUT BUFFER Power Considerations This section provides information on power dissipation and junction temperature for the ICS8545I. Equations and example calculations are also provided. 1. Power Dissipation. The total power dissipation for the ICS8545I is ...

Page 12

ICS8545I LOW SKEW, 1-TO-4, LVCMOS/LVTTL-TO-LVDS FANOUT BUFFER Reliability Information Table 7. θ vs. Air Flow Table for a 20 Lead TSSOP JA Linear Feet per Minute Single-Layer PCB, JEDEC Standard Test Boards Multi-Layer PCB, JEDEC Standard Test Boards Transistor Count ...

Page 13

... ICS8545BGI 8545BGILF ICS8545BGILF 8545BGILFT ICS8545BGILF NOTE: Parts that are ordered with an "LF" suffix to the part number are the Pb-Free configuration and are RoHS compliant. While the information presented herein has been checked for both accuracy and reliability, Integrated Device Technology (IDT) assumes no responsibility for either its use or for the infringement of any patents or other rights of third parties, which would result from its use ...

Page 14

ICS8545I LOW SKEW, 1-TO-4, LVCMOS/LVTTL-TO-LVDS FANOUT BUFFER Revision History Sheet Rev Table Page Description of Change 1 Features Section - added Additive Phase Jitter bullet Characteristics Table - added Additive Phase Jitter spec Added Additive ...

Page 15

ICS8545I LOW SKEW, 1-TO-4, LVCMOS/LVTTL-TO-LVDS FANOUT BUFFER Innovate with IDT and accelerate your future networks. Contact: www.IDT.com For Sales 800-345-7015 408-284-8200 Fax: 408-284-2775 Corporate Headquarters Integrated Device Technology, Inc. 6024 Silver Creek Valley Road San Jose, CA 95138 United States ...

Related keywords