What is FSUSB31K8X?
FSUSB31K8X is a Interface - Analog Switches - Special Purpose component from ON Semiconductor. This product page summarizes the core sourcing details buyers need before checking price, availability, documentation, or samples.
Supply original FSUSB31K8X, Interface - Analog Switches - Special Purpose, by ON Semiconductor
IC USB SWITCH DPST US8
RoHS
Datasheet
Pictures are for reference only. Please contact us for the latest pictures.
Key specifications
Serise
-
Min Quantity
1
Category
Integrated Circuits (ICs)Sub Categroy
Interface - Analog Switches - Special PurposeDescription
IC USB SWITCH DPST US8
key Attributes
-
Technical document
Open The Official Datasheet
Review the latest datasheet for FSUSB31K8X from ON Semiconductor in a separate tab so engineers and buyers can check package, electrical characteristics, and application details without leaving this product page.
Why request a quote
Use the RFQ step to confirm the commercial and documentation details buyers usually need before placing an order.
Confirm stock and lead-time expectations
Check CoC or traceability support
Align inspection and fulfillment details
Trust signals
Globally recognized certifications
Visible certifications work best when they are paired with clear operational promises around traceability, handling, and inspection.
ISO 9001
Quality management processes for more consistent sourcing and handling.
AS9120B
Aerospace-focused distribution controls for traceability and reliability.
ISO 14001
Environmental management discipline across warehouse and operating workflows.
ESD Control
Electrostatic handling standards to help protect sensitive components.
Authenticity Verification
CoC Available on Request
Pre-Shipment Inspection
Responsive RFQ Support
Why buyers trust this sourcing flow
Our quality workflow is designed to reduce counterfeit risk and support confident procurement. Components are reviewed through documented handling and inspection steps so buyers can evaluate sourcing with stronger authenticity controls.
Structured product content
Review The Product The Way Buyers Actually Evaluate It
Jump between overview, specs, and related sourcing content without scanning one long uninterrupted page.
Product overview
Overview
The Fairchild Switch FSTU32X384 provides 20 bits of high speed CMOS TTL-compatible bus switches.
The low On Resistance of the switch allows inputs to be connected to outputs without adding propagation delay or generating additional ground bounce noise.
The device is organized as four 5-bit switches with separate bus enable (OE) signals. When OE is LOW, the switch is ON and Port A is connected to Port B. When OE is HIGH, the switch is OPEN and a high-impedance state exists between the two ports.
Features
• 4Ω switch connection between two ports
• Minimal propagation delay through the switch
• Ultra low power with < 0.1 µA typical ICC
• Zero ground bounce in flow-through mode
• Control inputs compatible with TTL level
• See Application Note AN-5008 for details on FSTU - Undershoot Protected Fairchild Switch Family
Full technical breakdown
Detailed Specifications
Review grouped attributes and parameters without scanning one oversized table.
Fast scan
Popular Specs Surfaced First
Export Classifications & Environmental
JESD-609 Code
e3
Export Classifications & Environmental
Moisture Sensitivity Level (MSL)
1 (Unlimited)
Export Classifications & Environmental
RoHS Status
ROHS3 Compliant
Export Classifications & Environmental
HTSUS
8542.39.0001
Export Classifications & Environmental
ECCN Code
EAR99
Product Attribute
Part Status
Active
JESD-609 Code
e3
Moisture Sensitivity Level (MSL)
1 (Unlimited)
RoHS Status
ROHS3 Compliant
HTSUS
8542.39.0001
ECCN Code
EAR99
Part Status
Active
REACH Status
REACH Unaffected
ECCN
EAR99
Lead Free
Lead Free
Lifecycle Status
ACTIVE (Last Updated: 3 days ago)
Mounting Type
Surface Mount
Factory Lead Time
4 Weeks
Published
2005
Packaging
Tape & Reel (TR)
Categories
Integrated Circuits (ICs)
Terminal Position
DUAL
Terminal Form
GULL WING
Terminal Pitch
0.5mm
Operating Temperature
-40°C~85°C TA
Subcategory
Multiplexer or Switches
Polarity
Non-Inverting
Resistance
10Ohm
Manufacturer
ON Semiconductor
Switch-On Time-Max
30ns
Max Supply Voltage
4.3V
Weight
30mg
Package / Case
8-VFSOP (0.091, 2.30mm Width)
Number Of Functions
1
Contact Plating
Tin
Radiation Hardening
No
Mount
Surface Mount
Pbfree Code
yes
Number Of Pins
8
Number Of Terminations
8
Width
2.3mm
Supply Voltage
3.3V
Length
2mm
Min Supply Voltage
3V
Height
700μm
Power Dissipation
100μW
High Level Output Current
50mA
Sub-Categories
Interface - Analog Switches - Special Purpose
Data Rate
480 Mbps
Applications
USB
Feature
Break-Before-Make, USB 2.0
Max Power Dissipation
100nW
-3db Bandwidth
720MHz
Voltage - Supply, Single (V+)
3V~4.3V
Manufacturer'S Part No.
FSUSB31K8X
Base Part Number
FSUSB31
Multiplexer/Demultiplexer Circuit
2:1
Normal Position
NC
Turn-Off Delay Time
12 ns
On-State Resistance Match-Nom
0.35Ohm
Number Of Channels
1
Supply Type
Single
Number Of Inputs
2
Turn On Delay Time
15 ns
On-State Resistance (Max)
10Ohm
Analog IC - Other Type
SPST
Off-State Isolation-Nom
35 dB
Switch Circuit
DPST
Common questions
Product FAQ
Quick answers for buyers reviewing FSUSB31K8X, stock, documentation, and sourcing steps.
What package and description are listed for FSUSB31K8X?
FSUSB31K8X is listed with package reference -. The current product description is IC USB SWITCH DPST US8, and buyers should confirm package, footprint, and electrical details against the datasheet or quotation notes before approval.
Is FSUSB31K8X available in stock?
This page currently shows 45666 units in stock and 41834 units available for FSUSB31K8X. Because electronic component availability can change quickly, submit an RFQ to confirm live stock, lead time, and final pricing.
Can I request a quote or sample for FSUSB31K8X?
Yes. Use the Quick Quote or Request Sample action on this page to send the quantity and sourcing requirements for FSUSB31K8X by ON Semiconductor. The TrustCompo team can review price, availability, and documentation support.
Is a datasheet available for FSUSB31K8X?
Yes. This page links to the datasheet for FSUSB31K8X by ON Semiconductor, so engineers and buyers can review package, ratings, and application details before purchase.
How should buyers verify FSUSB31K8X before ordering?
Buyers should confirm the manufacturer, package, quantity, target price, RoHS or compliance needs, and any Certificate of Conformance or traceability requirements for FSUSB31K8X before approving the order.
Interface - Analog Switches - Special Purpose
Recommended Products
Explore more parts from the same subcategory to compare fit, stock, and sourcing options.
HV232FG-G
221 purchased
LQFP
RoHS
Datasheet
IC ULTRASOUND SWITCH 11 48LQFP
Reference price
$12.36Add to RFQ list
DG541DY-E3
144 purchased
16SOIC
RoHS
Datasheet
IC SWITCH QUAD SPST 16SOIC
Reference price
Needs inquiryAdd to RFQ list
HV214FG-G
202 purchased
LQFP
RoHS
Datasheet
IC ULTRASOUND SWITCH 11 48LQFP
Reference price
$14.15Add to RFQ list
DG534ADN-E3
167 purchased
LCC
RoHS
Datasheet
IC AMP/VIDEO/MUX LP 4/8CH 20PLCC
Reference price
Needs inquiryAdd to RFQ list
LMH6574MA/NOPB
182 purchased
14SOIC
RoHS
IC VIDEO MULTIPLEXER 4X1 14SOIC
Reference price
$3.65Add to RFQ list
More sourcing insights
Articles
Jul 11, 2026
2026 Q3 Wide-Bandgap Power Read: Where SiC Is Scaling, Where GaN Is Winning, and Why Silicon Still Matters
wide-bandgap semiconductorsSiCGaNpower electronics
A Q3 2026 read on SiC, GaN, and silicon power semiconductors: where wide-bandgap devices are winning now, where silicon still holds, and what engineers and sourcing teams should watch.
Jul 8, 2026
Texas Instruments Lead Time and Price Pressure in 2026: What Analog and Power Buyers Should Do Now
Texas Instrumentsanalog ICpower management IClead time
A buyer-facing framework for Texas Instruments analog and power IC exposure in 2026, covering what is confirmed, where price and lead-time pressure is most likely to show up, and which actions sourcing teams should take first.
Jul 3, 2026
How to Read a Product Change Notification (PCN): TI and Renesas Case Studies
PCNproduct change notificationelectronics procurementTI
Learn how to read a Product Change Notification (PCN), separate PCN vs PDN vs EOL, and decide which supplier changes need tracking, validation, or engineering escalation.