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83948AYILFT

Description
clock drivers & distribution 12 lvcmos out buffer
Categorysemiconductor    Other integrated circuit (IC)   
File Size279KB,13 Pages
ManufacturerIDT (Integrated Device Technology, Inc.)
Websitehttp://www.idt.com/
Environmental Compliance  
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83948AYILFT Overview

clock drivers & distribution 12 lvcmos out buffer

83948AYILFT Parametric

Parameter NameAttribute value
ManufactureIDT (Integrated Device Technology)
Product CategoryClock Drivers & Distributi
RoHSYes
Package / CaseTQFP-32
PackagingReel
Factory Pack Quantity1000
Low Skew, 1-to-12 Differential-to-
LVCMOS/LVTTL Fanout Buffer
PRODUCT DISCONTINUATION NOTICE - LAST TIME BUY EXPIRES MAY 6, 2017
Datasheet
83948I
General Description
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 50 series 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.
Features
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
Pin Assignment
GND
Q0
Q
LVCMOS_CLK
Pullup
CLK
nCLK
Pulldown
CLK_SEL
Pullup
Pullup
32 31 30 29 28 27 26 25
1
0
Q0
Q1
Q2
Q3
CLK_SEL
LVCMOS_CLK
CLK
nCLK
CLK_EN
1
2
3
4
5
6
7
8
9
Q11
Q3
Q1
Q2
D
V
DDO
V
DDO
CLK_EN
Pullup
GND
24
23
22
21
20
19
18
17
10 11 12 13 14 15 16
V
DDO
GND
V
DDO
GND
Q10
Q9
Q8
GND
Q4
V
DDO
Q5
GND
Q6
V
DDO
Q7
Block Diagram
OE
Q4
Q5
Q6
Q7
Q8
Q9
Q10
Q11
V
DD
GND
83948I
32-Lead LQFP
7mm x 7mm x 1.4mm package body
Y Package
Top View
OE
Pullup
©2016 Integrated Device Technology, Inc
1
May 19, 2016

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