FD7745T Pletronics, Inc., FD7745T Datasheet - Page 16

• Manufacturer Part Number: FD7745T
• Description: Fd7t Series Multi-output Cmos Clock Oscillator
• Manufacturer: Pletronics, Inc.

Pad Functions FD75xxT:
Other Logic “0" or tri-stated (off)
SSC
SSD
All unused inputs should be pulled high.
Pad
10
11
12
13
14
1
2
3
4
5
6
7
8
9
The output can have a spread spectrum centered about the output frequency.
The output can have a spread spectrum from the output frequency downward.
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Function
Vsupply1
Vcontrol
Ground (GND)
Out4 (Y5)
Vsupply2
n.c.
n.c.
Out5 (Y7)
Out3 (Y3)
Out2 (Y2)
Out1 (Y1)
S2 / SCL
S1 / SDA
S0
No connection or connect to ground (do not connect to a signal lead)
No connection or connect to ground (do not connect to a signal lead)
PLL2 frequency divider 4 and divided by 1 through 127
Crystal reference frequency divider 1 and divided by 1 through 1023
Crystal reference frequency divider 1 and divided by 1 through 1023
Crystal reference frequency divider 1 and divided by 1 through 1023
Note
1.8V, powers internal circuitry of the oscillator. Bypass capacitor required near the
package pin.
Frequency control input when the VCXO function is enabled
PLL1 frequency divider 2 and divided by 1 through 127
PLL2 frequency divider 4 and divided by 1 through 127
PLL2 frequency divider 5 and divided by 1 through 127
1.8V, 2.5V or 3.3V supply for the output buffers. Sets CMOS output level. Bypass
capacitor required near the package pin.
PLL3 frequency divider 6 and divided by 1 through 127
PLL3 frequency divider 7 and divided by 1 through 127
PLL1 frequency divider 2 and divided by 1 through 127
PLL1 frequency divider 3 and divided by 1 through 127
PLL1 frequency divider 2 and divided by 1 through 127
PLL1 frequency divider 1 and divided by 1 through 1023
Serial Data Clock
Serial Data
425-776-1880
FD7T Series Multi-Output
CMOS Clock Oscillator
S2
S1
S0
functions of the outputs
Input to select 1 of 8 preprogrammed
May 2008
Output
Function
O
t
h
e
r
X
X
X
X
X
X
X
X
X
X
X
16
S
S
C
X
X
X
X
X
X
X
X
X
S
S
D
X
X
X
X
X
X
X
X
X