http://www.www.datasheet4u.com

900,000+ Datasheet PDF Search and Download

Datasheet4U offers most rated semiconductors datasheets pdf



Integrated Device Technology Electronic Components Datasheet



ICS83948I

1-TO-12 DIFFERENTIALTO-LVCMOS/LVTTL FANOUT BUFFER


No Preview Available !

ICS83948I pdf
LOW SKEW, 1-TO-12 DIFFERENTIAL-
TO-LVCMOS/LVTTL FANOUT BUFFER
General Description
The ICS83948I is a low skew, 1-to-12
ICS Differential-to-LVCMOS/LVTTL Fanout Buffer and
HiPerClockS™ a member of the HiPerClockS™ family of High
Performance Clock Solutions from IDT. The
ICS83948I 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 ICS83948I is characterized at full 3.3V core/3.3V output.
Guaranteed output and part-to-part skew characteristics make the
ICS83948I ideal for those clock distribution applications
demanding well defined performance and repeatability.
ICS83948I
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 both standard (RoHS 5) and lead-free (RoHS 6)
packages
Block Diagram
CLK_EN Pullup
LVCMOS_CLK Pullup
CLK Pullup
nCLK Pulldown
CLK_SEL Pullup
1
0
D
Q
OE Pullup
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
Q8
Q9
Q10
Q11
Pin Assignment
CLK_SEL
LVCMOS_CLK
CLK
nCLK
CLK_EN
OE
VDD
GND
32 31 30 29 28 27 26 25
1 24
2 23
3 22
4 21
5 20
6 19
7 18
8 17
9 10 11 12 13 14 15 16
GND
Q4
VDDO
Q5
GND
Q6
VDDO
Q7
ICS83948I
32-Lead LQFP
7mm x 7mm x 1.4mm package body
Y Package
Top View
IDT™ / ICS™ LVCMOS/LVTTL CLOCK GENERATOR
1
ICS83948AYI REV. C NOVEMBER 14, 2012



No Preview Available !

ICS83948I pdf
ICS83948I
LOW SKEW, 1-TO-12 DIFFERENTIAL-TO-LVCMOS/LVTTL FANOUT BUFFER
Table 1. Pin Descriptions
Number
Name
1 CLK_SEL
2
3
4
5
6
7
8, 12, 16,
20, 24, 28, 32
9, 11, 13,
15, 17, 19,
21, 23, 25,
27, 29, 31
10, 14, 18,
22, 26, 30
LVCMOS_CLK
CLK
nCLK
CLK_EN
OE
VDD
GND
Q11, Q10, Q9,
Q8, Q7, Q6,
Q5, Q4, Q3,
Q2, Q1, Q0
VDDO
Type
Input
Pullup
Input
Input
Input
Input
Input
Power
Pullup
Pullup
Pulldown
Pullup
Pullup
Description
Clock select input. When HIGH, selects LVCMOS_CLK input.
When LOW, selects CLK/nCLK inputs. LVCMOS / LVTTL interface levels.
Single-ended clock input. LVCMOS/LVTTL interface levels.
Non-inverting differential clock input.
Inverting differential clock input.
Clock enable pin. LVCMOS/LVTTL interface levels.
Output enable pin. LVCMOS/LVTTL interface levels.
Positive supply pin.
Power
Power supply ground.
Output
Single-ended clock outputs. LVCMOS/LVTTL interface levels.
Power
Output supply pins.
NOTE: Pullup and Pulldown refer to internal input resistors. See Table 2, Pin Characteristics, for typical values.
Table 2. Pin Characteristics
Symbol
Parameter
CIN Input Capacitance
RPULLUP
Input Pullup Resistor
RPULLDOWN Input Pulldown Resistor
CPD
Power Dissipation Capacitance
(per output)
ROUT
Output Impedance
Test Conditions
Minimum
Typical
4
51
51
25
7
Maximum
Units
pF
k
k
pF
Function Tables
Table 3A. Clock Select Function Table
Control Input
Clock
CLK_SEL
CLK/nCLK
LVCMOS_CLK
0
Selected
De-selected
1
De-selected
Selected
IDT™ / ICS™ LVCMOS/LVTTL CLOCK GENERATOR
2
ICS83948AYI REV. C NOVEMBER 14, 2012



Part Number ICS83948I
Description 1-TO-12 DIFFERENTIALTO-LVCMOS/LVTTL FANOUT BUFFER
Maker Integrated Device Technology - Integrated Device Technology
Total Page 13 Pages
PDF Download
ICS83948I pdf
Download PDF File
ICS83948I pdf
View for Mobile




Featured Datasheets

Part Number Description Manufacturers PDF
ICS83940 1-TO-18 LVCMOS FANOUT BUFFER ICS83940
Integrated Circuit Systems
PDF
ICS83940-01 1-TO-18 LVCMOS FANOUT BUFFER ICS83940-01
Integrated Circuit Systems
PDF
ICS83940-02 1-TO-18 LVCMOS FANOUT BUFFER ICS83940-02
Integrated Circuit Systems
PDF
ICS83940D 1-TO-18 LVPECL-TO-LVCMOS / LVTTL FANOUT BUFFER ICS83940D
Integrated Circuit Systems
PDF
ICS83940DI 1-TO-18 LVPECL-TO-LVCMOS / LVTTL FANOUT BUFFER ICS83940DI
Integrated Circuit Systems
PDF
ICS83940DI 1-to18 LVPECL-to-LVCMOS/LVTTL Fanout Buffer ICS83940DI
Integrated Device Technology
PDF


Part Number Start With

0  1  2  3  4  5  6  7  8  9  A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z

site map

webmaste! click here

contact us

Buy Components