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844256BGILFT

Description
Clock Generator, 625MHz, PDSO24, 4.40 X 7.80 MM, 0.90 MM HEIGHT, ROHS COMPLIANT, MO-153, TSSOP-24
CategoryThe embedded processor and controller    Microcontrollers and processors   
File Size345KB,16 Pages
ManufacturerIDT (Integrated Device Technology)
Environmental Compliance  
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844256BGILFT Overview

Clock Generator, 625MHz, PDSO24, 4.40 X 7.80 MM, 0.90 MM HEIGHT, ROHS COMPLIANT, MO-153, TSSOP-24

844256BGILFT Parametric

Parameter NameAttribute value
Is it lead-free?Lead free
Is it Rohs certified?conform to
MakerIDT (Integrated Device Technology)
Parts packaging codeTSSOP
package instructionTSSOP, TSSOP24,.25
Contacts24
Reach Compliance Codecompliant
ECCN codeEAR99
JESD-30 codeR-PDSO-G24
JESD-609 codee3
length7.8 mm
Number of terminals24
Maximum operating temperature85 °C
Minimum operating temperature-40 °C
Maximum output clock frequency625 MHz
Package body materialPLASTIC/EPOXY
encapsulated codeTSSOP
Encapsulate equivalent codeTSSOP24,.25
Package shapeRECTANGULAR
Package formSMALL OUTLINE, THIN PROFILE, SHRINK PITCH
Peak Reflow Temperature (Celsius)260
power supply3.3 V
Master clock/crystal nominal frequency25.5 MHz
Certification statusNot Qualified
Maximum seat height1.1 mm
Maximum supply voltage3.465 V
Minimum supply voltage3.135 V
Nominal supply voltage3.3 V
surface mountYES
technologyCMOS
Temperature levelINDUSTRIAL
Terminal surfaceMATTE TIN
Terminal formGULL WING
Terminal pitch0.65 mm
Terminal locationDUAL
Maximum time at peak reflow temperature30
width4.4 mm
uPs/uCs/peripheral integrated circuit typeCLOCK GENERATOR, OTHER
FEMTOCLOCKS™ CRYSTAL-TO-LVDS
FREQUENCY SYNTHESIZER W/INTEGRATED FANOUT BUFFER
ICS844256I
G
ENERAL
D
ESCRIPTION
The ICS844256I is a Cr ystal-to-LVDS Clock
Synthesizer/Fanout Buffer designed for SONET
HiPerClockS™
and Gigabit Ether net applications and is a
member of the HiperClockS™ family of High
Perfor mance Clock Solutions from IDT. The
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.
F
EATURES
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
Function
IC
S
S
ELECT
F
UNCTION
T
ABLE
Inputs
FB_SEL
0
0
0
0
1
1
1
1
N_SEL1
0
0
1
1
0
0
1
1
N_SEL0
0
1
0
1
0
1
0
1
M Divide
25
25
25
25
32
32
32
32
N Divide
1
2
4
5
1
2
4
8
M/ N
25
12.5
6.25
5
32
16
8
4
B
LOCK
D
IAGRAM
Q0
nQ0
PLL_BYPASS
Pullup
P
IN
A
SSIGNMENT
V
DDO
V
DDO
nQ2
Q2
nQ1
Q1
nQ0
Q0
PLL_BYPASS
V
DDA
V
DD
FB_SEL
Q1
1
XTAL_IN
OSC
XTAL_OUT
PLL
0
Output
Divider
nQ1
Q2
nQ2
Q3
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
Feedback
Divider
FB_SEL
N_SEL1
N_SEL0
Pulldown
Pullup
Pullup
ICS844256I
24-Lead TSSOP, E-Pad
4.40mm x 7.8mm x 0.90mm
body package
G Package
Top View
nQ3
Q4
nQ4
Q5
nQ5
IDT
/ ICS
LVDS FREQUENCY SYNTHESIZER W/FANOUT BUFFER
1
ICS844256BGI REV. A DECEMBER 21, 2007

844256BGILFT Related Products

844256BGILFT 844256BGILF
Description Clock Generator, 625MHz, PDSO24, 4.40 X 7.80 MM, 0.90 MM HEIGHT, ROHS COMPLIANT, MO-153, TSSOP-24 Clock Generator, 625MHz, PDSO24, 4.40 X 7.80 MM, 0.90 MM HEIGHT, ROHS COMPLIANT, MO-153, TSSOP-24
Is it lead-free? Lead free Lead free
Is it Rohs certified? conform to conform to
Maker IDT (Integrated Device Technology) IDT (Integrated Device Technology)
Parts packaging code TSSOP TSSOP
package instruction TSSOP, TSSOP24,.25 TSSOP, TSSOP24,.25
Contacts 24 24
Reach Compliance Code compliant compliant
ECCN code EAR99 EAR99
JESD-30 code R-PDSO-G24 R-PDSO-G24
JESD-609 code e3 e3
length 7.8 mm 7.8 mm
Number of terminals 24 24
Maximum operating temperature 85 °C 85 °C
Minimum operating temperature -40 °C -40 °C
Maximum output clock frequency 625 MHz 625 MHz
Package body material PLASTIC/EPOXY PLASTIC/EPOXY
encapsulated code TSSOP TSSOP
Encapsulate equivalent code TSSOP24,.25 TSSOP24,.25
Package shape RECTANGULAR RECTANGULAR
Package form SMALL OUTLINE, THIN PROFILE, SHRINK PITCH SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
Peak Reflow Temperature (Celsius) 260 260
power supply 3.3 V 3.3 V
Master clock/crystal nominal frequency 25.5 MHz 25.5 MHz
Certification status Not Qualified Not Qualified
Maximum seat height 1.1 mm 1.1 mm
Maximum supply voltage 3.465 V 3.465 V
Minimum supply voltage 3.135 V 3.135 V
Nominal supply voltage 3.3 V 3.3 V
surface mount YES YES
technology CMOS CMOS
Temperature level INDUSTRIAL INDUSTRIAL
Terminal surface MATTE TIN MATTE TIN
Terminal form GULL WING GULL WING
Terminal pitch 0.65 mm 0.65 mm
Terminal location DUAL DUAL
Maximum time at peak reflow temperature 30 30
width 4.4 mm 4.4 mm
uPs/uCs/peripheral integrated circuit type CLOCK GENERATOR, OTHER CLOCK GENERATOR, OTHER
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