Product Specification

PE4250

©2008-2009 Peregrine Semiconductor Corp. All rights reserved.

Document No. 70-0254-02

│ www.psemi.com

Page 3 of 9

Control Logic Input

The PE4250 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

operate with a single control pin (pin 2) supporting

a +3.3 or 5.0-volt CMOS logic input, and requires

a dedicated +3.3 or 5.0-volt power supply

connection (pin 1). 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 V1 and V2 (pins 2 & 1), that can be directly

driven by +3.3 or 5.0-volt CMOS logic or a suitable

µProcessor I/O port. This enables the PE4250 to

operate in positive control voltage mode within the

PE4250 operating limits.

Control Voltages

Signal Path

Pin 2 (V1) = High

RFC to RF1

Pin 2 (V1) = Low

RFC to RF2

Table 5. Single-pin Control Logic Truth Table

Table 6. Complementary-pin Control Logic

Truth Table

Control Voltages

Signal Path

Pin 1 (V2 ) = Low

Pin 2 (V1) = High

RFC to RF1

Pin 1 (V2) = High

Pin 2 (V1) = Low

RFC to RF2

Logo updated under non-rev change. Peregrine products are protected under one or more of the following U.S. Patents: http://patents.psemi.com