cs844256bgit Integrated Device Technology, cs844256bgit Datasheet
cs844256bgit
Manufacturer Part Number
cs844256bgit
Description
Femtoclocks? Crystal-to-lvds Frequency Synthesizer W/integrated Fanout Buffer
Manufacturer
Integrated Device Technology
Datasheet
1.CS844256BGIT.pdf
(16 pages)
FEMTOCLOCKS™ CRYSTAL-TO-LVDS
FREQUENCY SYNTHESIZER W/INTEGRATED FANOUT BUFFER
IDT
G
output frequency can be set using the frequency select
pins and a 25MHz crystal for Ethernet frequencies, or a
19.44MHz crystal for SONET. The low phase noise character-
istics of the ICS844256I make it an ideal clock for these
demanding applications.
B
PLL_BYPASS
S
HiPerClockS™
F
IC S
ELECT
LOCK
XTAL_OUT
B
ENERAL
™
_
XTAL_IN
/ ICS
FB_SEL
N_SEL0
0
0
0
0
N_SEL1
1
1
1
1
S
E
F
L
™
UNCTION
LVDS FREQUENCY SYNTHESIZER W/FANOUT BUFFER
D
The ICS844256I is a Cr ystal-to-LVDS Clock
Synthesizer/Fanout Buffer designed for SONET
and Gigabit Ether net applications and is a
member of the HiperClockS™ family of High
Perfor mance Clock Solutions from IDT. The
N
Pullup
Pulldown
Pullup
Pullup
n I
_
IAGRAM
p
S
D
0
0
0
0
1
1
1
1
u
E
T
s t
L
ESCRIPTION
ABLE
1
OSC
N
_
S
0
0
0
0
1
1
1
1
E
L
0
M
D
2
2
2
2
3
3
3
3
v i
PLL
5
5
5
5
2
2
2
2
Feedback
d i
Divider
e
F
N
u
n
D
t c
v i
2
4
5
2
4
8
1
1
o i
d i
1
0
n
e
6
M
1
2
3
Divider
1
Output
2 .
2
5
8
4
N /
5
2
6
5 .
5
1
F
Six LVDS outputs
Crystal oscillator interface
Output frequency range: 62.5MHz to 625MHz
Crystal input frequency range: 15.625MHz to 25.5MHz
RMS phase jitter at 125MHz, using a 25MHz crystal
(1.875MHz to 20MHz): 0.48ps (typical)
Full 3.3V or 3.3V core, 2.5V output supply mode
-40°C to 85°C ambient operating temperature
Available in both standard (RoHS 5) and lead-free (RoHS 6)
packages
EATURES
Q0
nQ0
Q1
nQ1
Q2
nQ2
Q3
nQ3
Q4
nQ4
Q5
nQ5
ICS844256BGI REV. A DECEMBER 21, 2007
P
PLL_BYPASS
IN
4.40mm x 7.8mm x 0.90mm
FB_SEL
24-Lead TSSOP, E-Pad
A
V
V
V
nQ2
nQ1
nQ0
V
DDO
DDO
DDA
Q2
Q1
Q0
SSIGNMENT
DD
ICS844256I
ICS844256I
body package
G Package
Top View
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
Q3
nQ3
Q4
nQ4
Q5
nQ5
N_SEL1
GND
GND
N_SEL0
XTAL_OUT
XTAL_IN
Related parts for cs844256bgit
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
Integrated Processor
Manufacturer:
Integrated Device Technology, Inc.
Part Number:
Description:
Integrated Riscontroller for Low-Cost Systems
Manufacturer:
Integrated Device Technology, Inc.
Part Number:
Description:
INTEGRATED RISController FOR LOW-COST SYSTEMS
Manufacturer:
Integrated Device Technology, Inc.
Part Number:
Description:
SwitchStar ATM Cell Based 1.2Gbps non-blocking Integrated Switch Controller
Manufacturer:
Integrated Device Technology, Inc.
Datasheet:
Part Number:
Description:
3.3V CMOS 16-bit bidirectional transceiver
Manufacturer:
Integrated Device Technology, Inc.
Datasheet:
Part Number:
Description:
3.3 CMOS octal buffer/line driver
Manufacturer:
Integrated Device Technology, Inc.
Datasheet:
Part Number:
Description:
Fast CMOS octal registered transceivers
Manufacturer:
Integrated Device Technology, Inc.
Datasheet:
Part Number:
Description:
Fast CMOS octal bidirectional transceivers
Manufacturer:
Integrated Device Technology, Inc.
Datasheet:
Part Number:
Description:
Fast CMOS 16-bit buffer/line driver
Manufacturer:
Integrated Device Technology, Inc.
Datasheet:
Part Number:
Description:
2.5 V/3.3 V 10 Bit High Bandwidth Bus Switch with Precharged Outputs
Manufacturer:
Integrated Device Technology, Inc.
Datasheet:
Part Number:
Description:
High-Speed CMOS Quick Switch 16:8 Multiplexer
Manufacturer:
Integrated Device Technology, Inc.
Datasheet:
Part Number:
Description:
QUICKSWITCH?? PRODUCTS HIGH-SPEED CMOS QUICKSWITCH DOUBLE-WIDTH BUS SWITCH IDTQS32X245Q2QUICKSWITCH PRODUCTS HIGH-SPEED CMOS QUICKSWITCH DOUBLE-WIDTH BUS SWITCH
Manufacturer:
Integrated Device Technology, Inc.
Datasheet:
Part Number:
Description:
2.5V / 3.3V 16-BIT HIGH BANDWIDTH BUS SWITCH
Manufacturer:
Integrated Device Technology, Inc.
Datasheet:
Part Number:
Description:
QUICKSWITCH PRODUCTS 2.5V / 3.3V 8-BIT HIGH BANDWIDTH BUS SWITCH
Manufacturer:
Integrated Device Technology, Inc.
Datasheet:
Part Number:
Description:
QUICKSWITCH PRODUCTS 2.5V / 3.3V 10-BIT HIGH BANDWIDTH BUS SWITCH
Manufacturer:
Integrated Device Technology, Inc.
Datasheet: