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ICS83940DI

Description
LOW SKEW, 1-TO-18 LVPECL-TO-LVCMOS / LVTTL FANOUT BUFFER
File Size99KB,13 Pages
ManufacturerICS ( IDT )
Websitehttp://www.icst.com
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ICS83940DI Overview

LOW SKEW, 1-TO-18 LVPECL-TO-LVCMOS / LVTTL FANOUT BUFFER

Integrated
Circuit
Systems, Inc.
ICS83940DI
L
OW
S
KEW
, 1-
TO
-18
LVPECL-
TO
-LVCMOS / LVTTL F
ANOUT
B
UFFER
F
EATURES
18 LVCMOS/LVTTL outputs
Selectable LVCMOS_CLK or LVPECL clock inputs
PCLK, nPCLK supports the following input types:
LVPECL, CML, SSTL
LVCMOS_CLK accepts the following input levels:
LVCMOS or LVTTL
Maximum output frequency: 250MHz
Output skew: 150ps (maximum)
Part to part skew: 750ps (maximum)
3.3V, 2.5V or mixed 3.3V core, 2.5V output supply modes
-40°C to 85°C ambient operating temperature
Pin compatible with the MPC940L
G
ENERAL
D
ESCRIPTION
The ICS83940DI is a low skew, 1-to-18 LVPECL-
to-LVCMOS/LVTTL Fanout Buffer and a member
HiPerClockS™
of the HiPerClockS™ family of High Performance
Clock Solutions from ICS. The ICS83940DI has
two selectable clock inputs. The PCLK, nPCLK
pair can accept LVPECL, CML, or SSTL input levels. The
LVCMOS_CLK can accept LVCMOS or LVTTL input levels.
The low impedance LVCMOS/LVTTL outputs are designed to
drive 50Ω series or parallel terminated transmission lines.
,&6
The ICS83940DI is characterized at 3.3V, 2.5V or mixed
3.3V core, 2.5V output operating supply modes. Guaranteed
output and part-to-part skew characteristics make the
ICS83940DI ideal for those clock distribution applications
demanding well defined performance and repeatability.
B
LOCK
D
IAGRAM
P
IN
A
SSIGNMENT
GND
V
DDO
Q0
Q1
Q2
Q3
Q4
Q5
CLK_SEL
PCLK
nPCLK
LVCMOS_CLK
GND
18
Q0:Q17
1
32 31 30 29 28 27 26 25
0
1
2
3
4
5
6
7
8
9 10 11 12 13 14 15 16
Q17
Q16
Q15
GND
Q14
Q13
Q12
V
DDO
24
23
22
Q6
Q7
Q8
V
DD
Q9
Q10
Q11
GND
GND
LVCMOS_CLK
CLK_SEL
PCLK
nPCLK
V
DD
V
DDO
ICS83940DI
21
20
19
18
17
32-Lead LQFP
7mm x 7mm x 1.4mm package body
Y Pacakge
Top View
83940DYI
www.icst.com/products/hiperclocks.html
1
REV. A DECEMBER 12, 2002

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Description LOW SKEW, 1-TO-18 LVPECL-TO-LVCMOS / LVTTL FANOUT BUFFER LOW SKEW, 1-TO-18 LVPECL-TO-LVCMOS / LVTTL FANOUT BUFFER LOW SKEW, 1-TO-18 LVPECL-TO-LVCMOS / LVTTL FANOUT BUFFER
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