Fairchild NC7SBU3157 157 Data Handbook
Summary
The NC7SBU3157/FSAU3157 is a high-performance, low-voltage SPDT Analog Switch ideal for complex analog and digital interface design. Featuring ultra-low on resistance (< 10Ω) and built-in -2V undershoot protection, it ensures signal integrity even under extreme conditions. This technical manual provides comprehensive details on its operation (including electrical specs like VCC range and current limitations), making it a critical resource for electronic engineers designing reliable multiplexer or demultiplexer bus switches into sophisticated systems.
Page 1 Text Content
查询FSAU3157P6X供应商
7S 3157 • F 3157 Tin y L ic Vo ltag e U alo itch ith −2V ersh t P ro tectio
April 2002 Revised January 2003
NC7SBU3157 • FSAU3157 Tiny Logic Low Voltage UHS SPDT Analog Switch with −2V Undershoot Protection General Description Features The NC7SBU3157 or FSAU3157 is a high performance, ■Useful in both analog and digital applications single-pole/double-throw (SPDT) Analog Switch or 2:1 Mul- ■Space saving SC70 6-lead surface mount package tiplexer/Demultiplexer Bus Switch from Fairchild’s Ultra
■Low On Resistance: < 10Ω on typ @ 3.3V VCC
High Speed Series of Tiny Logic. The device is fabricated
with advanced sub-micron CMOS technology to achieve ■Broad VCC operating range: 1.65V to 5.5V
high speed enable and disable times and low On Resis-
■Rail-to-Rail signal handling
tance. The break before make select circuitry prevents dis-
■Power down high impedance control input
ruption of signals on the B Port due to both switches
■Overvoltage tolerance of control input to 7.0V
temporarily being enabled during select pin switching. The
device is specified to operate over the 1.65 to 5.5V VCC ■Break before make enable circuitry
operating range. The control input tolerates voltages up to ■250 MHz - 3d B bandwidth 5.5V independent of the VCC operating range. Fairchild’s integrated Undershoot Hardened Circuit (UHC) senses undershoot at the I/Os, and responds by preventing voltage differentials from developing and turn- ing the switch on.
Ordering Code: Order Package Product Code
Package Description Supplied As
Number Number Top Mark NC7SBU3157P6X MAA06A U7A 6-Lead SC70, EIAJ SC88, 1.25mm Wide 3k Units on Tape and Reel FSAU3157P6X MAA06A U7A 6-Lead SC70, EIAJ SC88, 1.25mm Wide 3k Units on Tape and Reel
Tiny Logic is a registered trademark and UHC is a trademark of Fairchild Semiconductor Corporation.
© 2003 Fairchild Semiconductor Corporation DS500618 www.fairchildsemi.com
Page Summary Contents For Fairchild NC7SBU3157 157 Data Handbook
Manual Details
| Brand | Fairchild |
|---|---|
| Pages | 10 |
| File Size | 126.75 KB |
| Published | June 05, 2026 |
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Frequently Asked Questions
What is the maximum on-resistance of the switch?
It offers Ultra Low On Resistance, which is less than 10Ωm typically @ 3.3V.
How does it protect signals during switching?
The Break before make select circuitry (and UHC®) prevents signal disruption due to both switches and undershoot.
What voltage range must the VCC operate within?
The device is specified to operate over a VCC operating range of 1.65V to 5.5V.
Is this switch suitable for analog or digital uses?
Yes, it is useful in both high performance analog and digital applications.