PE4243
Product Specification
Table 5. Single-pin Control Logic Truth Table
Control Voltages
Pin 6 (V
DD
) = V
DD
Pin 4 (CTRL) = Low
Pin 6 (V
DD
) = V
DD
Pin 4 (CTRL) = High
Signal Path
RFC to RF1
Control Logic Input
The PE4243 is a very versatile RF CMOS switch
that supports two operating control modes; single-
pin control mode and complementary-pin control
mode.
Single-pin control mode
enables the switch to
operate with a single control pin (pin 4) supporting
a +3-volt CMOS logic input, and requires a
dedicated +3-volt power supply connection on pin
6 (V
DD
). This mode of operation reduces the
number of control lines required and simplifies the
switch control interface typically derived from a
CMOS
µProcessor
I/O port.
Complementary-pin control mode
allows the
switch to operate using complementary control
pins CTRL and
CTRL
(pins 4 & 6), that can be
directly driven by +3-volt CMOS logic or a suitable
µProcessor
I/O port. This enables the PE4243 to
be used as a potential alternate source for SPDT
RF switch products used in positive control
voltage mode and operating within the PE4243
operating limits.
RFC to RF2
Table 6. Complementary-pin Control Logic
Truth Table
Control Voltages
Pin 6 (CTRL or V
DD
) = High
Pin 4 (CTRL) = Low
Pin 6 (CTRL or V
DD
) = Low
Pin 4 (CTRL) = High
Signal Path
RFC to RF1
RFC to RF2
Document No. 70-0096-02
│
www.psemi.com
©2005 Peregrine Semiconductor Corp. All rights reserved.
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