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PE4256
Product Specification
Latch-Up Avoidance
Unlike conventional CMOS devices, UltraCMOS?
devices are immune to latch-up.
Switching Frequency
The PE4256 has a maximum 25 kHz switching
rate when the internal negative voltage generator
is used (pin 18 = GND).
Table 5. RF Path Truth Table
C1
Low
Low
High
C2
Low
High
Low
RFC – RF1
OFF
OFF
ON
RFC – RF2
OFF
ON
OFF
High
High
N/A
1
N/A 1
Table 6. Termination Truth Table
C1
C2
RFC – 75 ?
RF1 – 75 ? RF2 – 75 ?
Low
Low
X 2
X 2
X 2
Low
High
High
Low
X 2
X 2
High
High
N/A 1
N/A 1
N/A 1
Notes: 1. The operation of the PE4256 is not supported or characterized in the
C1 = V DD and C2 = V DD state.
2. "X" denotes termination enabled.
Document No. 70-0144-04 │ www.psemi.com
?2010-2011 Peregrine Semiconductor Corp. All rights reserved.
Page 3 of 8
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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