Product Specification

PE4280

Page 3 of 8

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Document No. 70-0164-05

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Table 5. RF Path Truth Table

Table 6. Termination Truth Table

Notes: 1. The operation of the PE4280 is not supported or characterized in the

2. "X" denotes termination enabled.

C1

C2

RFC – RF1

RFC – RF2

Low

Low

OFF

OFF

Low

High

OFF

ON

High

Low

ON

OFF

High

High

C1

C2

RFC – 75

Ω RF1 – 75 Ω RF2 – 75 Ω

Low

Low

Low

High

High

Low

High

High

Switching Frequency

The PE4280 has a maximum 25 kHz switching

rate when the internal negative voltage generator

is used (pin 18 = GND). The rate at which the

PE4280 can be switched is only limited to the

switching time if an external -3 V supply is

Latch-Up Avoidance

Unlike conventional CMOS devices, UltraCMOS™

devices are immune to latch-up.

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