ICS889831 Datasheet, PDF (3/18 Pages) Integrated Circuit Systems – LOW SKEW, 1-TO-4 DIFFERENTIAL LVPECL-TO-LVPECL/ECL FANOUT BUFFER

Integrated
Circuit
Systems, Inc.
ICS889831
LOW SKEW, 1-TO-4
DIFFERENTIAL LVPECL-TO-LVPECL/ECL FANOUT BUFFER
TABLE 3A. CONTROL INPUT FUNCTION TABLE
Input
Outputs
EN
Q0:Q3
nQ0:nQ3
0
Disabled; LOW
Disabled; HIGH
1
Enabled
Enabled
After EN switches, the clock outputs are disabled or enabled
following a falling input clock edge as shown in Figure 1.
EN
nIN
IN ^VIN
V_CC/2
t_S
nQx ^{→ tPD ←}
Qx
V_CC/2
t_H
FIGURE 1. EN TIMING DIAGRAM
V_OUT Swing
TABLE 3B. TRUTH TABLE
Inputs
Outputs
IN
nIN
EN
Q0:Q3 nQ0:nQ3
0
1
1
0
1
1
0
1
1
0
X
X
0
0⁽¹⁾
1⁽¹⁾
NOTE 1: On next negative transition of the input signal (IN).
889831AK
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3
REV. A JUNE 16, 2005