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83940DKILFT

Description
IC clk buf 2:18 250mhz 32vfqfpn
Categorysemiconductor    Analog mixed-signal IC   
File Size714KB,19 Pages
ManufacturerIDT (Integrated Device Technology, Inc.)
Websitehttp://www.idt.com/
Environmental Compliance  
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83940DKILFT Overview

IC clk buf 2:18 250mhz 32vfqfpn

Low Skew, 1-to18
LVPECL-to-LVCMOS/LVTTL Fanout Buffer
General Description
The ICS83940DI is a low skew, 1-to-18 LVPECL- to-LVCMOS/LVTTL
Fanout Buffer. The ICS83940DI has two selectable clock inputs. The
PCLK, nPCLK pair can accept LVPECL, CML, or SSTL input levels.
The LVCMOS_CLK can accept LVCMOS or LVTTL input levels. The
low impedance LVCMOS/LVTTL outputs are designed to drive 50Ω
series or parallel terminated transmission lines.
The ICS83940DI is characterized at full 3.3V and 2.5V or mixed 3.3V
core, 2.5V output operating supply modes. Guaranteed output and
part-to-part skew characteristics make the ICS83940DI ideal for
those clock distribution applications demanding well defined
performance and repeatability.
ICS83940DI
DATA SHEET
Features
Eighteen LVCMOS/LVTTL outputs
Selectable LVCMOS_CLK or LVPECL clock inputs
PCLK, nPCLK pair can accept the following differential input
levels: LVPECL, CML, SSTL
LVCMOS_CLK supports the following input types: LVCMOS or
LVTTL
Maximum output frequency: 250MHz
Output skew: 150ps (maximum)
Part-to-part skew: 750ps (maximum)
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
Block Diagram
CLK_SEL
Pulldown
PCLK
Pulldown
nPCLK
Pullup/Pulldown
0
18
Q0:Q17
LVCMOS_CLK
Pulldown
1
Pin Assignments
V
DDO
V
DDO
GND
GND
Q4
Q0
Q1
Q2
Q3
Q4
Q5
Q3
Q0
Q2
Q5
Q1
32 31 30 29 28 27 26 25
GND
GND
LVCMOS_CLK
CLK_SEL
PCLK
nPCLK
V
DD
V
DDO
S
O
P
O
R
P
2
3
4
1
D
E
24
23
22
21
Q6
Q7
Q8
V
DD
20 Q9
19 Q10
18
17
Q11
GND
32 31 30 29 28 27 26 25
GND
GND
LVCMOS_CLK
CLK_SEL
PCLK
nPCLK
V
DD
V
DDO
1
2
3
4
5
6
7
8
9 10 11 12 13 14 15 16
GND
V
DDO
Q17
Q16
Q15
Q14
Q13
Q12
24
23
Q6
Q7
Q8
V
DD
Q9
Q10
Q11
GND
ICS83940DI
ICS83940DI
22
21
20
19
18
17
5
6
7
8
9
10 11 12 13 14 15 16
GND
V
DDO
Q13
Q16
Q15
Q14
Q12
32 Lead VFQFN
5mm x 5mm x 0.925mm package body
K Package
Top View
ICS83940DYI REVISION C SEPTEMBER 7, 2010
1
Q17
32-Lead LQFP
7mm x 7mm x 1.4mm package body
Y Package
Top View
©2010 Integrated Device Technology, Inc.

83940DKILFT Related Products

83940DKILFT ICS83940DYIT ICS83940DYI
Description IC clk buf 2:18 250mhz 32vfqfpn IC clk buffer 2:18 250mhz 32tqfp IC clk buffer 2:18 250mhz 32tqfp
Standard Package - 1,000 250
Category - Integrated Circuits (ICs) Integrated Circuits (ICs)
Family - Clock/Timing - Clock Buffers, Drivers Clock/Timing - Clock Buffers, Drivers
Packaging - Tape & Reel (TR) Tray
Type - Fanout Buffer (Distribution), Multiplexe Fanout Buffer (Distribution), Multiplexe
Number of Circuits - 1 1
Ratio - Inpu - Outpu Outpu
Differential - Inpu - Outpu Outpu
Inpu - CML, LVCMOS, LVPECL, LVTTL, SSTL CML, LVCMOS, LVPECL, LVTTL, SSTL
Outpu - LVCMOS, LVTTL LVCMOS, LVTTL
Frequency - Max - 250MHz 250MHz
Voltage - Supply - 2.375 V ~ 3.465 V 2.375 V ~ 3.465 V
Operating Temperature - -40°C ~ 85°C -40°C ~ 85°C
Mounting Type - Surface Mou Surface Mou
Package / Case - 32-LQFP 32-LQFP
Supplier Device Package - 32-TQFP (7x7) 32-TQFP (7x7)
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