PI6C48535-11 Pericom Semiconductor Corporation, PI6C48535-11 Datasheet - Page 2

• Manufacturer Part Number: PI6C48535-11
• Description: 3.3v, 4 Outputs, Crystal/lvcmos To Lvpecl Clock Buffer, Selectable Inputs
• Manufacturer: Pericom Semiconductor Corporation

Pin Description
Notes:
1.
Pin Characteristics
Control Input Function Table
Notes:
1.
V
CLK_EN
CLK_SEL
CLK
Xtal1,
Xtal2
NC
V
Q
Q
Q
Q
EE
CC
3
2
1
0
R_pulldown
CLK_EN
,
, nQ2
,
,
I = Input, O = Output, P = Power supply connection, I_PD = Input with pull down, I_PU = Input with pull up
Name
After CLK_EN switches, the clock outputs are disabled or enabled following a rising and falling input clock edge as show below.
R_pullup
n
n
n
Symbol
Q
Q
Q
C
1
0
0
1
1
3
0
IN
10, 13,
5, 8, 9
11, 12
14, 15
16, 17
19, 20
Pin #
6, 7
18
1
2
3
4
Input Pulldown Resistance
CLK_SEL
Input Pullup Resistance
Input Capacitance
0
1
0
1
Parameter
I_PU
I_PD
I_PD
Inputs
Type
O
O
O
O
P
P
Connect to Negative power supply
Synchronizing clock enable. When high, clock outputs follow clock input. When low, Q
outputs are forced low,
pull up.
Clock select input. When high, selects CLK
LVCMOS/LVTTL level with 50KΩ pull down.
LVCMOS / LVTTL clock input
Crystal input and output
No internal connection.
Connect to 3.3V
Differential output pair, LVPECL interface level.
Differential output pair, LVPECL interface level.
Differential output pair, LVPECL interface level.
Differential output pair, LVPECL interface level.
Selected Source
Xtal1, Xtal2
Xtal1, Xtal2
CLK
CLK
Conditions
n
Q
2
x
outputs are forced high. LVCMOS/LVTTL level with 50KΩ
Crystal/LVCMOS to LVPECL Fanout Buffer
Diasbled: Low
Disabled: Low
Description
Min.
Enabled
Enabled
Q
0
:Q
1
input. When low, selects CLK
3
Typ.
Outputs
50
50
3.3V Low Skew 1-to-4
Diasbled: High
Disabled: High
Max.
4
n
Enabled
Enabled
Q
PI6C48535-11
0
:
PS9738
0
n
Q
input.
3
Units
KΩ
KΩ
pF
05/27/04
x