Datasheet


    
     
SCDS172A - JULY 2004 − REVISED DECEMBER 2004
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
description/ordering information (continued)
This device is fully specified for partial-power-down applications using I
off
. The I
off
feature ensures that
damaging current will not backflow through the device when it is powered down. This switch maintains isolation
during power off.
To ensure the high-impedance state during power up or power down, EN
should be tied to V
CC
through a pullup
resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.
FUNCTION TABLE
INPUTS
INPUT/OUTPUT
FUNCTION
EN IN
INPUT/OUTPUT
D
FUNCTION
L L S1 D port = S1 port
L HS2D port = S2 port
H X Z Disconnect
PIN DESCRIPTION
PIN NAME
DESCRIPTION
S1, S2 Analog video I/Os
D Analog video I/Os
IN Select input
EN Switch-enable input