PI3V713 Datasheet, PDF (7/9 Pages) Pericom Semiconductor Corporation – 3.3V, 7-Channel Analog Video Switch with Automatic Switching

PRELIMINARY INFORMATION, COMPANY CONFIDENTIAL
PI3V713
3.3V, 7-Channel Analog Video Switch
with Automatic Switching
Switching Waveforms
Input
2.5V
t_PLH
Output
2.5V
2.5V
3.5V
1.5V
t_PHL
2.5V
V_OH
V_OL
SEL
tPZL
Output
tPZH
Output
1.25V
1.25V
tPLZ
VDD/2
tPHZ
VDD/2
VOL +0.3V
VOH –0.3V
2.5V
0V
VOH
VOL
VOH
VOL
Voltage Waveforms Propagation Delay Times
Data In
tPLHX
Data Out
at Channel X
I
Data Out
at Channel Y
tPLHy
tPHLX
tSK(o)
tPHLy
3.5V
2.5V
1.5V
VOH
2.5V
VOL
VOH
2.5V
VOL
tSK(o) = I tPLHy – tPLHx I or I tPHLy – tPHLx I
Output Skew - t_SK(o)
Voltage Waveforms Enable and Disable Times
Input
tPLH
tPHL
Output
tSK(p) = I tPHL – tPLH I
3.5V
2.5V
1.5V
VOH
2.5V
VOL
Pulse Skew - t_SK(p)
Applications Information
Logic Inputs
The logic control inputs can be driven up to +3.6V regardless of the supply voltage.For example, given a +3.3V supply, the output
enables or select pins may be driven low to 0V and high to 3.6V.Driving IN Rail-to-Rail® minimizes power consumption.
Automatic Switching Explanation
When PI3V713 is used as a 1:2 demux with one source and 2 monitors, the device can automatically route the single video source to
the required monitor output.
The determination scheme is based on 2 points.
1) The connection status of the monitors
2) The status of pin 30 (priority pin)
PI3V713 detects each output to determine if a monitor is plugged in or not. If only one monitor is plugged in, then the video source
will be automatically routed to that port.
If a monitor is connected to BOTH output ports, then the priority input pin (pin 30) is used to determine the winning route the video
signal should be routed towards.In automatic switching mode there is a minimum of 3 second delay time when switching between
10-0168
7
PS9095
05/12/10