March 2006
FSA4157, FSA4157A
Low Voltage 1Ω SPDT Analog Switch
Features
General Description
■ FSA4157A features lower I when the S input is
FSA4157 and FSA4157A are high performance Single
Pole/Double Throw (SPDT) analog switches. Both
CC
lower than V
CC
devices feature ultra low R of 1.15Ω maximum at 4.5V
■ Maximum 1.15Ω On Resistance (R ) at 4.5V V
ON
ON
CC
V
and will operate over the wide V range of 1.65V to
CC
CC
■ 0.3Ω max R flatness at 4.5V V
ON
CC
5.5V for FSA4157, and 2.7V to 5.5V for FSA4157A. The
device is fabricated with sub-micron CMOS technology
to achieve fast switching speeds and is designed for
break-before-make operation. The select input is TTL
level compatible.
■ Space saving 6-lead Pb-Free MicroPak™ and
SC70 6-lead surface mount packages
■ Broad V operating range:
CC
– FSA4157: 1.65V to 5.5V
– FSA4157A: 2.7V to 5.5V
The FSA4157A features very low quiescent current even
■ Fast turn-on and turn-off time
when the control voltage is lower than the V
supply.
CC
■ Break-before-make enable circuitry
This feature services the mobile handset applications
very well allowing for the direct interface with baseband
processor general purpose I/Os.
■ Over-voltage tolerant TTL compatible control circuitry
Technology Description
The Fairchild Switch family derives from and embodies
Fairchild’s proven switch technology used for several
years in its 74LVXL384 (FST3384) bus switch product.
Ordering Information
Package Product Code
Order Number
Number
Top Mark
Package Description
Supplied As
FSA4157P6
MAA06A
A57
6-Lead SC70, EIAJ SC88,
1.25mm Wide
250 Units on Tape and Reel
FSA4157P6X
MAA06A
MAA06A
MAC06A
MAA06A
MAA06A
MAA06A
MAC06A
A57
A57
EG
6-Lead SC70, EIAJ SC88,
1.25mm Wide
3k Units on Tape and Reel
3k Units on Tape and Reel
5k Units on Tape and Reel
250 Units on Tape and Reel
3k Units on Tape and Reel
3k Units on Tape and Reel
5k Units on Tape and Reel
(1)
FSA4157P6X_NL
Pb-Free 6-Lead SC70,
EIAJ SC88, 1.25mm Wide
FSA4157L6X
FSA4157AP6
FSA4157AP6X
Pb-Free 6-Lead MicroPak,
1.0mm Wide
B57
B57
B57
EU
6-Lead SC70, EIAJ SC88,
1.25mm Wide
6-Lead SC70, EIAJ SC88,
1.25mm Wide
(1)
FSA4157AP6X_NL
FSA4157AL6X
Pb-Free 6-Lead SC70,
EIAJ SC88, 1.25mm Wide
Pb-Free 6-Lead MicroPak,
1.0mm Wide
Pb-Free package per JEDEC J-STD-020B.
Note:
1. “_NL” indicates lead-free package (per JEDEC J-STD-020B). Device available in Tape and Reel only.
MicroPak is a trademark of Fairchild Semiconductor Corporation.
©2006 Fairchild Semiconductor Corporation
FSA4157, FSA4157A Rev. 1.0.1
1
www.fairchildsemi.com