ICS8545I Datasheet, PDF (3/15 Pages) Integrated Device Technology – LOW SKEW, 1-TO-4 LVCMOS/LVTTL-TO-LVDS FANOUT BUFFER

ICS8545I
LOW SKEW, 1-TO-4, LVCMOS/LVTTL-TO-LVDS FANOUT BUFFER
Function Tables
Table 3A. Control Input Function Table
Inputs
OE
CLK_EN
CLK_SEL
0
X
X
1
0
0
1
0
1
1
1
0
1
1
1
Selected Source
CLK1
CLK2
CLK1
CLK2
Q0:Q3
Hi-Z
Low
Low
Active
Active
Outputs
Q0:Q3
Hi-Z
High
High
Active
Active
After CLK_EN switches, the clock outputs are disabled or enabled following a rising and falling input clock edge as shown in Figure 1.
In the active mode, the state of the outputs are a function of the CLK1 and CLK2 inputs as described in Table 3B.
CLK1, CLK2
CLK_EN
Disabled
Enabled
Q0:Q3
Q0:Q3
Figure 1. CLK_EN Timing Diagram
Table 3B. Clock Input Function Table
Inputs
Outputs
CLK1 or CLK2
Q0:Q3
Q0:Q3
0
LOW
HIGH
1
HIGH
LOW
IDT™ / ICS™ LVDS FANOUT BUFFER
3
ICS8545BGI REV. B MARCH 02, 2009