8538BG-31LF IDT, 8538BG-31LF Datasheet - Page 3

• Manufacturer Part Number: 8538BG-31LF
• Description: Clock Drivers & Distribution
• Manufacturer: IDT

Specifications of 8538BG-31LF

• Product Category: Clock Drivers & Distribution
• Rohs: yes
• Part # Aliases: ICS8538BG-31LF

Function Tables
Table 3A. Control Input Function Table
After CLK_EN switches, the clock outputs are disabled or enabled following a rising and falling input clock or crystal oscillator edge as
shown in Figure 1. In the active mode, the state of the outputs are a function of the CLK input as described in Table 3B.
Figure 1. CLK_EN Timing Diagram
Table 3B. Clock Input Function Table
IDT™ / ICS™ LVPECL FANOUT BUFFER
nQ0:nQ7
CLK_EN
ICS8538-31
LOW SKEW, 1-TO-8, CRYSTAL OSCILLATOR/LVCMOS-TO-3.3V LVPECL FANOUT BUFFER
Q0:Q7
CLK_EN
Inputs
CLK
CLK
0
0
1
1
0
1
CLK_SEL
Q0:Q7
HIGH
LOW
0
1
0
1
Inputs
Outputs
Disabled
nQ0:nQ7
HIGH
XTAL_IN, XTAL_OUT
XTAL_IN, XTAL_OUT
LOW
Selected Source
CLK
CLK
3
Disabled; Low
Disabled; Low
Enabled
Enabled
Q0:Q7
Outputs
Enabled
Disabled; High
Disabled; High
nQ0:nQ7
Enabled
Enabled
ICS8538BG-31 REV. B FEBRUARY 5, 2008