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83918

Description
Maximum output frequency
File Size262KB,20 Pages
ManufacturerIDT (Integrated Device Technology, Inc.)
Websitehttp://www.idt.com/
Download Datasheet View All

83918 Overview

Maximum output frequency

Low Skew, 1:18
Crystal-to-LVCMOS/LVTTL Fanout Buffer
83918
DATA SHEET
General Description
The 83918 is a low skew, 1:18 Crystal-to- LVCMOS/LVTTL Fanout
Buffer. The 83918 has selectable LVCMOS/LVTTL clock or crystal
inputs. The low impedance LVCMOS/LVTTL outputs are designed to
drive 50 series or parallel terminated transmission lines.
The 83918 is characterized at full 3.3V, full 2.5V and mixed
3.3V/2.5V, 3.3V/1.8V, and 2.5V/1.8V output operating supply modes.
Guaranteed output and part-to-part skew characteristics make the
83918 ideal for those clock distribution applications demanding well
defined performance and repeatability.
Features
Eighteen LVCMOS/LVTTL output
Selectable crystal oscillator interface or LVCMOS_CLK
Maximum output frequency: 200MHz
Crystal input frequency range: 10MHz to 40MHz
RMS phase jitter using a 25MHz crystal (1kHz – 1MHz): 0.449ps
(typical) @ 3.3V/3.3V
Output skew: 75ps (maximum) @ 3.3V/3.3V
Operating supply modes:
Core/Output
3.3V/3.3V
3.3V/2.5V
3.3V/1.8V
2.5V/2.5V
2.5V/1.8V
-40°C to 85°C ambient operating temperature
Available in lead-free (RoHS 6) package
Block Diagram
CLK_SEL
Pulldown
XTAL_IN
Pin Assignment
V
DDO
GND
Q4
Q3
OSC
XTAL_OUT
0
18
32 31 30 29 28 27 26 25
GND
Q0:Q17
GND
LVCMOS_CLK
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
Q0
Q2
Q5
Q1
24
23
22
21
20
19
18
17
Q6
Q7
Q8
V
DDO
Q9
Q10
Q11
GND
LVCMOS_CLK
Pulldown
1
CLK_SEL
XTAL_IN
XTAL_OUT
V
DD
V
DDO
83918
32 Lead LQFP
7mm x 7mm x 1.4mm package body
Y Package
Top View
83918 Rev B 3/25/15
1
©2015 Integrated Device Technology, Inc.
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