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PE4239
Product Specification
Table 5. Single-pin Control Logic Truth Table
Control Voltages
Pin 6 (CTRL or V DD ) = V DD
Pin 4 (CTRL) = High
Pin 6 (CTRL or V DD ) = V DD
Pin 4 (CTRL) = Low
Signal Path
RFC to RF1
RFC to RF2
Control Logic Input
The PE4239 is a 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
Table 6. Complementary-pin Control Logic
Truth Table
operate with a single control pin (pin 4) supporting
a +3-volt CMOS logic input, and requires a
Control Voltages
Pin 6 (CTRL or V DD ) = Low
Pin 4 (CTRL) = High
Pin 6 (CTRL or V DD ) = High
Pin 4 (CTRL) = Low
Document No. 70-0068-02 │ www.psemi.com
Signal Path
RFC to RF1
RFC to RF2
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 μ Processor 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
μ Processor I/O port. This enables the PE4239 to
be used as a potential alternate source for SPDT
RF switch products used in positive control
voltage mode and operating within the PE4239
operating limits.
?2002-2006 Peregrine Semiconductor Corp. All rights reserved.
Page 3 of 9
Logo updated under non-rev change. Peregrine products are protected under one or more of the following U.S. Patents: http://patents.psemi.com
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