FD7745T Pletronics, Inc., FD7745T Datasheet - Page 14

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

Pad Functions FD73xxT:
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.
www.pletronics.com
Function
Vsupply1
Vcontrol
Ground (GND)
n.c.
Vsupply2
n.c.
n.c.
n.c.
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)
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)
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
1.8V, 2.5V or 3.3V supply for the output buffers. Sets CMOS output level. Bypass
capacitor required near the package pin.
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
14
S
S
C
X
X
X
X
X
S
S
D
X
X
X
X
X