83940DYI-01LF IDT, Integrated Device Technology Inc, 83940DYI-01LF Datasheet

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83940DYI-01LF

Manufacturer Part Number
83940DYI-01LF
Description
Manufacturer
IDT, Integrated Device Technology Inc
Type
Clock Driverr
Datasheet

Specifications of 83940DYI-01LF

Number Of Clock Inputs
2
Output Frequency
175MHz
Output Logic Level
LVCMOS/LVTTL
Operating Supply Voltage (min)
2.375V
Operating Supply Voltage (typ)
2.5/3.3V
Operating Supply Voltage (max)
3.465V
Package Type
LQFP
Operating Temp Range
-40C to 85C
Operating Temperature Classification
Industrial
Mounting
Surface Mount
Pin Count
32
Lead Free Status / RoHS Status
Compliant
Block Diagram
LVCMOS_CLK
General Description
The ICS83940I-01 is a low skew, 1-to-18 LVPECL-to-LVCMOS/
LVTTL Fanout Buffer. The ICS83940I-01 has two selectable clock
inputs. The PCLK, nPCLK pair can accept LVPECL or SSTL input
levels. The single-ended clock input accepts LVCMOS or LVTTL
input levels.
The ICS83940I-01 is characterized at full 3.3V, full 2.5V and mixed
3.3V input and 2.5V output operating supply modes. Guaranteed
output and part-to-part skew characteristics make the ICS83940I-01
ideal for those clock distribution applications demanding well defined
performance and repeatability.
ICS83940DYI-01 REVISION A SEPTEMBER 27, 2010
CLK_SEL
nPCLK
PCLK
Pullup/Pulldown
Pulldown
Pulldown
Pulldown
Low Skew, 1-to18
LVPECL-to-LVCMOS/LVTTL Fanout Buffer
0
1
18
Q[0:17]
1
Features
Eighteen LVCMOS/LVTTL outputs, 23Ω typical output impedance
Selectable LVCMOS_CLK or LVPECL clock inputs
PCLK, nPCLK pair can accept the following differential input
levels: LVPECL, SSTL
LVCMOS_CLK supports the following input types: LVCMOS or
LVTTL
Maximum output frequency: 175MHz
Additive phase jitter, RMS: 0.108ps (typical), 3.3V/3.3V
Output skew: 115ps (maximum)
Part-to-part skew: 800ps (maximum), 3.3V/3.3V
Operating supply modes:
Core/Output
3.3V/3.3V
3.3V/2.5V
2.5V/2.5V
-40°C to 85°C ambient operating temperature
Available in both standard (RoHS 5) and lead-free (RoHS 6)
packages
Pin Assignment
LVCMOS_CLK
CLK_SEL
nPCLK
PCLK
V
GND
GND
7mm x 7mm x 1.4mm package body
V
DDO
DD
1
2
3
4
5
6
7
8
32 31 30 29 28 27 26 25
9 10 11 12 13 14 15 16
ICS83940I-01
32-Lead LQFP
Y Package
Top View
©2010 Integrated Device Technology, Inc.
ICS83940I-01
DATA SHEET
24
23
22
21
20
19
18
17
Q6
Q7
Q8
V
Q9
Q10
Q11
GND
DDO

Related parts for 83940DYI-01LF

83940DYI-01LF Summary of contents

Page 1

... Pulldown CLK_SEL Pulldown PCLK 0 Pullup/Pulldown nPCLK Pulldown LVCMOS_CLK 1 ICS83940DYI-01 REVISION A SEPTEMBER 27, 2010 Features • Eighteen LVCMOS/LVTTL outputs, 23Ω typical output impedance • Selectable LVCMOS_CLK or LVPECL clock inputs • PCLK, nPCLK pair can accept the following differential input levels: LVPECL, SSTL • ...

Page 2

... Input Pullup Resistor PULLUP Power Dissipation Capacitance C PD (per output) R Output Impedance OUT ICS83940DYI-01 REVISION A SEPTEMBER 27, 2010 Type Description Power Power supply ground. Input Pulldown Single-ended clock input. LVCMOS/LVTTL interface levels. Clock select input. When HIGH, selects LVCMOS_CLK input. When LOW, ...

Page 3

... Biased; NOTE 1 0 – Biased; NOTE NOTE 1: Please refer to the Application Information Section, Wiring the Differential Input to Accept Single-ended Levels. ICS83940DYI-01 REVISION A SEPTEMBER 27, 2010 Clock LVCMOS_CLK De-selected Selected Outputs PCLK nPCLK Q[0:17 LOW 1 0 HIGH 0 Biased; NOTE 1 ...

Page 4

... Symbol Parameter V Power Supply Voltage DD V Output Supply Voltage DDO I Power Supply Current DD I Output Supply Current DDO ICS83940DYI-01 REVISION A SEPTEMBER 27, 2010 LOW SKEW, 1-TO-18 LVPECL-TO-LVCMOS/LVTTL FANOUT BUFFER Rating 3.6V -0. 0.3V DD -0. 0.3V DDO ±20mA 53.5°C/W (0 mps) -40°C to 125° 3.3V± ...

Page 5

... PCLK I Input Low Current IL nPCLK I Input Current IN V Peak-to-Peak Input Voltage PP V Common Mode Input Voltage; NOTE 1 CMR NOTE 1: Common mode voltage is defined as V ICS83940DYI-01 REVISION A SEPTEMBER 27, 2010 = 3.3V±5% or 2.5V±5 Test Conditions V = 3. 3. 3. 3.465V or 2.625V ...

Page 6

... NOTE 5: This parameter is defined in accordance with JEDEC Standard 65. NOTE 6: Defined as skew between outputs on different devices, across temperature and voltage ranges, same frequency and with equal load conditions. Using the same type of inputs on each device, the outputs are measured at V ICS83940DYI-01 REVISION A SEPTEMBER 27, 2010 = V = 3.3V ± 5 -40° ...

Page 7

... NOTE 5: This parameter is defined in accordance with JEDEC Standard 65. NOTE 6: Defined as skew between outputs on different devices, across temperature and voltage ranges, same frequency and with equal load conditions. Using the same type of inputs on each device, the outputs are measured at V ICS83940DYI-01 REVISION A SEPTEMBER 27, 2010 = 3.3V ± 5 2.5V ± 5%, T ...

Page 8

... NOTE 5: This parameter is defined in accordance with JEDEC Standard 65. NOTE 6: Defined as skew between outputs on different devices, across temperature and voltage ranges, same frequency and with equal load conditions. Using the same type of inputs on each device, the outputs are measured at V ICS83940DYI-01 REVISION A SEPTEMBER 27, 2010 = V = 2.5V ± 5 -40° ...

Page 9

... The device meets the noise floor of what is shown, but can actually be lower. The phase noise is dependent on the input source and measurement equipment. ICS83940DYI-01 REVISION A SEPTEMBER 27, 2010 LOW SKEW, 1-TO-18 LVPECL-TO-LVCMOS/LVTTL FANOUT BUFFER of the power in the 1Hz band to the power in the fundamental. When the required offset is specified, the phase noise is called a dBc value, which simply means dBm at a specified offset from the fundamental ...

Page 10

... Core/2.5V LVCMOS Output Load AC Test Circuit Part 1 V DDO Qx 2 Part 2 V DDO Qy 2 tsk(pp) Part-to-Part Skew ICS83940DYI-01 REVISION A SEPTEMBER 27, 2010 LOW SKEW, 1-TO-18 LVPECL-TO-LVCMOS/LVTTL FANOUT BUFFER 1.25V±5% SCOPE V DD, V DDO Qx LVCMOS GND -1.25V±5% 2.5V Core/2.5V LVCMOS Output Load AC Test Circuit ...

Page 11

... ICS83940I-01 Data Sheet Parameter Measurement Information, continued 80% 20% Q[0:17 Output Rise/Fall Time nPCLK PCLK LVCMOS_CLK V DDO Q[0:17 Propagation Delay ICS83940DYI-01 REVISION A SEPTEMBER 27, 2010 LOW SKEW, 1-TO-18 LVPECL-TO-LVCMOS/LVTTL FANOUT BUFFER Q[0:17] 80% 20 Output Duty Cycle/Pulse Width/Period 11 V DDO PERIOD 100% odc = t PERIOD ...

Page 12

... This can be done in one of two ways. First, R3 and R4 in parallel should equal the transmission Figure 1. Recommended Schematic for Wiring a Differential Input to Accept Single-ended Levels ICS83940DYI-01 REVISION A SEPTEMBER 27, 2010 line impedance. For most 50Ω applications, R3 and R4 can be 100Ω ...

Page 13

... LVCMOS Control Pins All control pins have internal pulldowns; additional resistance is not required but can be added for additional protection. A 1kΩ resistor can be used. ICS83940DYI-01 REVISION A SEPTEMBER 27, 2010 input interfaces suggested here are examples only. If the driver is and V input from another vendor, use their termination recommendation. Please ...

Page 14

... This calculation is only an example. Tj will vary depending on the number of loaded outputs, supply voltage, air flow and the type of board (multi-layer). θ Table 6. Thermal Resistance JA Meters per Second Multi-Layer PCB, JEDEC Standard Test Boards ICS83940DYI-01 REVISION A SEPTEMBER 27, 2010 * ( 3.465V *(26mA + 28mA) = 187.11mW DD DDO number of outputs = 9pF * 175MHz * (3 ...

Page 15

... Table 7. vs. Air Flow Table for a 32 Lead LQFP JA Meters per Second Multi-Layer PCB, JEDEC Standard Test Boards Transistor Count The transistor count for ICS83940I-01 is: 819 ICS83940DYI-01 REVISION A SEPTEMBER 27, 2010 LOW SKEW, 1-TO-18 LVPECL-TO-LVCMOS/LVTTL FANOUT BUFFER θ vs. Air Flow 53.5°C/W 48.0° ...

Page 16

... Basic D2 & E2 5.60 Ref. e 0.80 Basic L 0.45 0.60 θ 0° ccc Reference Document: JEDEC Publication 95, MS-026 ICS83940DYI-01 REVISION A SEPTEMBER 27, 2010 LOW SKEW, 1-TO-18 LVPECL-TO-LVCMOS/LVTTL FANOUT BUFFER Maximum 1.60 0.15 1.45 0.45 0.20 0.75 7° 0.10 16 ©2010 Integrated Device Technology, Inc. ...

Page 17

... ICS83940DI01 83940DYI-01LF ICS83940DI01L 83940DYI-01LFT ICS83940DI01L 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 18

ICS83940I-01 Data Sheet We’ve Got Your Timing Solution 6024 Silver Creek Valley Road Sales 800-345-7015 (inside USA) San Jose, California 95138 +408-284-8200 (outside USA) Fax: 408-284-2775 www.IDT.com/go/contactIDT DISCLAIMER Integrated Device Technology, Inc. (IDT) and its subsidiaries reserve the right to ...

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