Tel: 886-2-66296288
Fax: 886-2-29174598
URL: http://www.princeton.com.tw
Low On-Resistance Wideband/Video Quad 2-Channel Mux/DeMux
PT2328
DESCRIPTION
The PT2328 is a true bidirectional Quad 2-channel multiplexer/ de-multiplexer utilizing CMOS
Technology. It is recommended for both RGB and composite video switching applications. The video
switch can be driven from a video DAC or a composite video source.
The very low ON-resistance and wide bandwidth make it ideal for video and other applications.
High output current which is far greater than most analog switches offered today, only need a single 5V
supply for operation. The PT2328 is a good choice to replacing the “switches + buffer amplifier”
solution in both cost and performance reasons.
FEATURES
•
•
•
•
•
•
•
•
•
Video signal switch
Wide bandwidth: 240MHz
Low On-Resistance: 5Ω, Low signal loss
Low crosstalk: 10MHz/-58dB
Extremely low power consumption
Single supply: +5V
Switching speed: 5nS
Output driver current: >100mA
16 pins, Multi-package mode
APPLICATIONS
•
•
•
•
•
LCD monitor, TV
DVD player with recorder
A/V power amplifier
A/V switching
CATV Tuner, Set-Top Box, Satellite Receiver
PT2328 V1.3
-1-
August, 2005
Tel: 886-2-66296288
Fax: 886-2-29174598
URL: http://www.princeton.com.tw
Low On-Resistance Wideband/Video Quad 2-Channel Mux/DeMux
PT2328
FUNCTION DESCRIPTION
POWER SUPPLY
The power supplied to the PT2328 only needs single 5V, maximum workable voltage is 7V. In
theoretical the chip itself does not consume the current. Minimum supply voltage not less than 5V for
ensure low on-resistance of switch to keep the signal transmission quality.
ON/OFF SWITCH
PT2328 including 4 groups two way input/output multiplexer, please refer to the following truth table. In
5V supply voltage please maintain the input signal amplitude not greater than 2V for better signal
transmission quality.
TRUTH TABLE
/EN
0
0
1
IN
0
1
×
ON Switch
S1A,S1B,S1C,S1D
S2A,S2B,S2C,S2D
Output Off
PT2328 V1.3
-4-
August, 2005
Tel: 886-2-66296288
Fax: 886-2-29174598
URL: http://www.princeton.com.tw
Low On-Resistance Wideband/Video Quad 2-Channel Mux/DeMux
PT2328
ABSOLUTE MAXIMUM RATINGS
Parameter
Symbol
Ratings
Unit
Operating Temperature
Topr
-40〜+85
℃
Storage Temperature
Tstg
-65〜+150
℃
Supply Voltage
V
DD
V
-0.5〜+7.0
DC Input Voltage
Vimax
V
-0.5〜+7.0
DC Output Current
Iomax
120
mA
Power Dissipation
P
D
0.5
W
Note: Input pins surge current can reach 100mA does not induce the CMOS latched up.
PT2328 V1.3
-5-
August, 2005
PCB设计
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