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83948I PDF Datasheet ( 特性, スペック, ピン接続図 )

部品番号 83948I
部品説明 1-to-12 Differential-toLVCMOS/LVTTL Fanout Buffer
メーカ IDT
ロゴ IDT ロゴ 



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83948I Datasheet, 83948I PDF,ピン配置, 機能
Low Skew, 1-to-12 Differential-to-
LVCMOS/LVTTL Fanout Buffer
83948I
Datasheet
PRODUCT DISCONTINUATION NOTICE - LAST TIME BUY EXPIRES MAY 6, 2017
General Description
Features
The 83948I is a low skew, 1-to-12 Differential-to-LVCMOS/LVTTL
Fanout Buffer and a member of the family of High Performance
Clock Solutions from IDT. The 83948I has two selectable clock
inputs. The CLK, nCLK pair can accept most standard differential
input levels. The LVCMOS_CLK can accept LVCMOS or LVTTL
input levels. The low impedance LVCMOS/LVTTL outputs are
designed to drive 50series or parallel terminated transmission
lines. The effective fanout can be increased from 12 to 24 by
utilizing the ability of the outputs to drive two series terminated
lines.
The 83948I is characterized at full 3.3V core/3.3V output.
Guaranteed output and part-to-part skew characteristics make the
83948I ideal for those clock distribution applications demanding
well defined performance and repeatability.
Twelve LVCMOS/LVTTL outputs
Selectable differential CLK/nCLK or LVCMOS/LVTTL clock
input
CLK/nCLK pair can accept the following differential
input levels: LVPECL, LVDS, LVHSTL, SSTL, HCSL
LVCMOS_CLK supports the following input types: LVCMOS,
LVTTL
Maximum output frequency: 250MHz
Output skew: 350ps (maximum)
Part-to-part skew: 1.5ns (maximum)
3.3V core, 3.3V output
-40°C to 85°C ambient operating temperature
Available in lead-free (RoHS 6) package
For drop in replacement part use 83948i-147
CLK_EN Pullup
LVCMOS_CLK Pullup
CLK Pullup
nCLK Pulldown
1
0
CLK_SEL Pullup
Block Diagram
D
Q
OE Pullup
©2016 Integrated Device Technology, Inc
Pin Assignment
32 31 30 29 28 27 26 25
Q0 CLK_SEL 1
LVCMOS_CLK 2
24 GND
23 Q4
Q1 CLK 3
22 VDDO
Q2 nCLK 4
CLK_EN 5
Q3
OE 6
Q4 VDD 7
21 Q5
20 GND
19 Q6
18 VDDO
Q5 GND 8
17 Q7
9 10 11 12 13 14 15 16
Q6
Q7
83948I
Q8
32-Lead LQFP
Q9 7mm x 7mm x 1.4mm package body
Q10 Y Package
Top View
Q11
1 May 19, 2016

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83948I

1-to-12 Differential-toLVCMOS/LVTTL Fanout Buffer

IDT
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