ICS85314I-11 Datasheet, PDF (3/18 Pages) Integrated Circuit Systems – LOW SKEW, 1-TO-5 DIFFERENTIAL-TO-2.5V/3.3V LVPECL FANOUT BUFFER

Integrated
Circuit
Systems, Inc.
ICS85314I-11
LOW SKEW, 1-TO-5
DIFFERENTIAL-TO-2.5V/3.3V LVPECL FANOUT BUFFER
TABLE 3A. CONTROL INPUT FUNCTION TABLE
Inputs
Outputs
nCLK_EN
CLK_SEL
Selected Source
Q0:Q4
nQ0:nQ4
0
0
CLK0, nCLK0
Enabled
Enabled
0
1
CLK1, nCLK1
Enabled
Enabled
1
0
CLK0, nCLK0
Disabled; LOW
Disabled; HIGH
1
1
CLK1, nCLK1
Disabled; LOW
Disabled; HIGH
After nCLK_EN switches, the clock outputs are disabled or enabled following a falling input clock edge
as shown in Figure 1.
In the active mode, the state of the outputs are a function of the CLK0, nCLK0 and CLK1, nCLK1 inputs
as described in Table 3B.
nCLK0, nCLK1
CLK0, CLK1
Disabled
Enabled
nCLK_EN
nQ0:nQ4
Q0:Q4
FIGURE 1. nCLK_EN TIMING DIAGRAM
TABLE 3B. CLOCK INPUT FUNCTION TABLE
Inputs
CLK0 or CLK1 nCLK0 or nCLK1
0
1
1
0
Outputs
Q0:Q4
nQ0:nQ4
LOW
HIGH
HIGH
LOW
Input to Output Mode
Differential to Differential
Differential to Differential
Polarity
Non Inverting
Non Inverting
85314AGI-11
www.icst.com/products/hiperclocks.html
3
REV. C MAY 24, 2005