ICS8S89831I Datasheet, PDF (3/21 Pages) Integrated Device Technology – Output frequency

ICS8S89831I Data Sheet
Function Tables
Table 3A. Control Input Function Table
Input
Outputs
EN
Q0:Q3
nQ0:nQ3
0
Disabled; LOW
Disabled; HIGH
1
Enabled
Enabled
NOTE: After EN switches, the clock outputs are disabled or
enabled following a falling input clock edge as shown in Figure 1.
DIFFERENTIAL LVPECL-TO-LVPECL/ECL FANOUT BUFFER
EN
nIN
IN ^VIN
V_CC/2
t_S
nQx ^{→ tPD ←}
Qx
Figure 1. EN Timing Diagram
V_CC/2
t_H
Table 3B. Truth Table
Inputs
IN
nIN
EN
0
1
1
1
0
1
X
X
0
Q0:Q3
0
1
0 (NOTE 1)
NOTE 1: On the next negative transition of the input signal (IN).
Outputs
nQ0:nQ3
1
0
1(NOTE 1)
V_OUT
ICS8S89831AKI REVISION A APRIL 26, 2010
3
©2010 Integrated Device Technology, Inc.