cs844256bgit Integrated Device Technology, cs844256bgit Datasheet - Page 8

• Manufacturer Part Number: cs844256bgit
• Description: Femtoclocks? Crystal-to-lvds Frequency Synthesizer W/integrated Fanout Buffer
• Manufacturer: Integrated Device Technology

D
IDT
O
3.3V O
O
Clock
Outputs
DC Input
IFFERENTIAL
nQx
nQy
UTPUT
UTPUT
ICS844256I
FEMTOCLOCKS™ CRYSTAL-TO-LVDS FREQUENCY SYNTHESIZER W/INTEGRATED FANOUT BUFFER
POWER SUPPLY
Qx
Qy
™
+
/ ICS
Float GND
3.3V±5%
V
UTPUT
S
R
DD
™
LVDS
KEW
20%
ISE
LVDS FREQUENCY SYNTHESIZER W/FANOUT BUFFER
–
/F
O
L
ALL
UTPUT
OAD
t sk(o)
T
80%
AC T
IME
V
V
t
V
R
DD
DDO
OLTAGE
,
V
EST
DDA
C
S
P
IRCUIT
ETUP
ARAMETER
LVDS
80%
100
t
F
nQx
out
out
Qx
V
20%
SCOPE
OD
➤
➤
M
V
/ V
SW I N G
EASUREMENT
OD
8
O
O
V
3.3V/2.5V O
Reference Document: JEDEC Publication 95, MO-153
DD
UTPUT
FFSET
nQ0:nQ5
DC Input
V
Q0:Q5
DDA
V
V
D
DDO
V
OLTAGE
UTY
DD
I
LVDS
➤
NFORMATION
UTPUT
C
YCLE
S
ETUP
LVDS
L
/P
t
PW
OAD
ULSE
ICS844256BGI REV. A DECEMBER 21, 2007
odc =
AC T
W
t
t
PERIOD
PERIOD
IDTH
t
PW
EST
/P
C
ERIOD
x 100%
IRCUIT
nQx
Qx
out
out
SCOPE
➤
V
OS
/ V
OS
+ +
Float GND
SUPPLY
POWER
–