650R-14LF IDT, 650R-14LF Datasheet - Page 2

• Manufacturer Part Number: 650R-14LF
• Description: Clock Drivers & Distribution SYSTEM PERIPHERAL CLOCK SOURCE
• Manufacturer: IDT

Specifications of 650R-14LF

• Rohs: yes
• Part # Aliases: ICS650R-14LF

Pin Assignment
Table 2
Pin Descriptions
IDT™ / ICS™ NETWORKING SYSTEM CLOCK
Number
ICS650-14
NETWORKING SYSTEM CLOCK
Pin
SELB1
10
11
12
1
2
3
4
5
6
7
8
9
0
0
0
1
1
1
X1/ICLK
SELB1
CLKA5
SELB0
CLKB
CLKC
GND
VDD
25M
X1/ICLK
SELB0
SELB1
CLKA5
CLKA1
Name
X2
CLKB
CLKC
GND
VDD
25M
Pin
OE
X2
SELB0
20-pin (150 mil) SSOP
M
M
10
0
1
0
1
1
2
3
4
5
6
7
8
9
Type
I(Pu)
I(Pu)
Pin
XO
Ou
XI
TI
O
O
O
O
P
P
20
19
18
17
16
15
14
13
12
11
CLKB
83.33
19.44
30
27
48
80
Select pin for CLKB. See table 2.
Crystal connection. Connect to a 25 MHz crystal or leave unconnected for clock
input.
Crystal connection. Connect to a 25 MHz fundamental crystal or clock input.
Connect to 3.3 V or 5 V. Must be same as other VDDs.
Select pin for CLK B. See table 2.
Connect to ground.
Selectable clock output. See table 2.
Selectable clock output. See table 3.
Selectable clock output. See table 1.
25 MHz clock output.
Output enable. Tri-states all outputs when low. Internal pull-up.
Selectable clock output. See table 1.
SELC
SELA0
CLKA2
CLKA3
VDD
SELA1
GND
CLKA4
CLKA1
OE
2
Table 1
Table 3
0 = connect directly to ground
1 = connect directly to VDD
M = leave unconnected (floating)
SELA1
M
M
M
0
0
0
1
1
1
SELC
M
0
1
Pin Description
SELA0
M
M
M
0
1
0
1
0
1
CLKB/4
CLKC
62.5
CLKA1:4
125
33.33
66.67
33.33
33.33
66.67
100
50
50
25
ICS650-14
CLOCK SYNTHESIZER
CLKA5
133.33
66.66
33.33
83.33
125
100
100
75
75
REV H 051310