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8344BYILF

Description
clock drivers & distribution 24 lvcmos out buffer
Categorysemiconductor    Other integrated circuit (IC)   
File Size167KB,16 Pages
ManufacturerIDT (Integrated Device Technology, Inc.)
Websitehttp://www.idt.com/
Environmental Compliance  
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8344BYILF Overview

clock drivers & distribution 24 lvcmos out buffer

8344BYILF Parametric

Parameter NameAttribute value
ManufactureIDT (Integrated Device Technology)
Product CategoryClock Drivers & Distributi
RoHSYes
Package / CaseTQFP-48
PackagingReel
Factory Pack Quantity250
Low Skew, 1-to-24 Differential-to-
LVCMOS/LVTTL Fanout Buffer
Data Sheet
8344I
G
ENERAL
D
ESCRIPTION
The 8344I is a low voltage, low skew fanout buffer and a member
of the family of High Performance Clock Solutions from IDT. The
8344I has two selectable clock inputs. The CLK0, nCLK0 and CLK1,
nCLK1 pairs can accept most standard differential input levels.
The 8344I is designed to translate any differential signal levels
to LVCMOS/LVTTL levels. The low impedance LVCMOS/LVTTL
outputs are designed to drive 50Ω series or parallel terminated
transmission lines. The effective fanout can be increased to 48
by utilizing the ability of the outputs to drive two series terminated
lines. Redundant clock applications can make use of the dual clock
input. The dual clock inputs also facilitate board level testing. 8344I
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
8344I ideal for those clock distribution applications demanding well
defined performance and repeatability.
F
EATURES
Twenty-four LVCMOS/LVTTL outputs,
7Ω typical output impedance
Two selectable differential clock input pairs for redundant
clock applications
CLKx, nCLKx pair can accept the following differential
input levels: LVDS, LVPECL, LVHSTL, SSTL, HCSL
Maximum output frequency: 100MHz
Translates any single-ended input signal to LVCMOS/LVTTL
with resistor bias on nCLK input
Multiple output enable pins for disabling unused outputs
in reduced fanout applications
Output skew: 275ps (maximum)
Part-to-part skew: 600ps (maximum)
Bank skew: 150ps (maximum)
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 lead-free (RoHS 6) package
B
LOCK
D
IAGRAM
P
IN
A
SSIGNMENT
Q16
Q17
V
DDO
GND
Q18
Q19
Q20
Q21
V
DDO
GND
Q22
Q23
48 47 46 45 44 43 42 41 40 39 38 37
1
2
3
4
5
48-Lead LQFP
6
7mm x 7mm x 1.4mm pack-
7
age body
8
Y Package
9
Top View
10
11
12
13 14 15 16 17 18 19 20 21 22 23 24
Q8
Q9
V
DDO
GND
Q10
Q11
Q12
Q13
V
DDO
GND
Q14
Q15
8344I
36
35
34
33
32
31
30
29
28
27
26
25
Q7
Q6
V
DDO
GND
Q5
Q4
Q3
Q2
V
DDO
GND
Q1
Q0
OE1
OE2
OE3
CLK0
nCLK0
V
DD
GND
CLK1
nCLK1
V
DD
GND
CLK_SEL
©2015 Integrated Device Technology, Inc
1
December 14, 2015

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Description clock drivers & distribution 24 lvcmos out buffer
Manufacture IDT (Integrated Device Technology)
Product Category Clock Drivers & Distributi
RoHS Yes
Package / Case TQFP-48
Packaging Reel
Factory Pack Quantity 250
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