Get a Sample
Request engineering samples to evaluate fit, validate alternatives, and keep design decisions moving before a larger order is placed.
Request evaluation samplesON SemiconductorIntegrated Circuits (ICs)Logic - Signal Switches, Multiplexers, DecodersON Semiconductor Logic - Signal Switches, Multiplexers, Decoders
FST3345MTCX Logic - Signal Switches, Multiplexers, Decoders by ON Semiconductor
FST3345MTCX is a Logic - Signal Switches, Multiplexers, Decoders model from ON Semiconductor, presented on TrustCompo for buyers who need clear sourcing and review context before RFQ. This listing sits in the Integrated Circuits (ICs) / Logic - Signal Switches, Multiplexers, Decoders product path. Known package information currently points to TSSOP under the ON Semiconductor brand listing. IC SWITCH BUS 8BIT TTL 20TSSOP. TrustCompo combines the available model, brand, hierarchy, and specification details around FST3345MTCX so buyers can move faster from review to quotation.
RoHS
Datasheet
Pictures are for reference only. Please contact us for the latest pictures.
Traceability and authenticity checks
Fast RFQ turnaround
Documentation support
Pre-shipment inspection review
Key specifications
Series
-
Min Quantity
1
Category
Integrated Circuits (ICs)Sub Category
Logic - Signal Switches, Multiplexers, DecodersDescription
IC SWITCH BUS 8BIT TTL 20TSSOP
key Attributes
-
Datasheet
View FST3345MTCX DatasheetTechnical document
Open The Official Datasheet
Review the latest datasheet for FST3345MTCX 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.
RoHS, REACH, and lead-free documentation can be confirmed during RFQ
Traceability and Certificate of Conformance support available on request
Pre-shipment inspection report support for quality review
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.
Ordering workflow
Understand how to order and what policies support the purchase
Use this section to see the fastest ordering path and the policy pages buyers usually review before confirming a component order.
How to order this product
A simple B2B flow helps engineering and procurement teams move from part review to commercial confirmation.
1
Confirm part and quantity
Review the part number, package, key specs, and target quantity so the quote request reflects the exact sourcing scope your team needs.
2
Send RFQ or sample request
Use Quick Quote for commercial pricing or Request Sample when engineering validation is still in progress and a smaller evaluation quantity is needed.
3
Align delivery, payment, and documentation
Before final release, confirm stock timing, shipment method, payment arrangement, and any traceability or inspection documents required by your process.
Policies buyers usually check
These pages explain the operating rules around samples, shipping, payment, and quality support before you place the order.
Shipping & Delivery
Review shipping origin, carrier options, delivery methods, and the practical factors that affect transit timing for global component orders.
Review shipping detailsPayment Terms
Understand supported payment methods, invoice handling, quote currency, and the commercial boundaries used for international B2B orders.
Review payment termsQuality & Traceability Center
See how incoming inspection, outgoing verification, traceability support, certifications, and additional testing fit into our quality workflow.
Review quality controlsStructured product content
Review The Product The Way Buyers Actually Evaluate It
Review overview, detailed specifications, and related sourcing content in one structured flow without scanning separate oversized sections.
Product overview
Overview
The Fairchild Switch FST3345 provides 8-bits of high-speed CMOS TTL-compatible bus switching.
The low on resistance of the switch allows inputs to be connected to outputs without adding propagation delay or generating additional ground bounce noise.
Features
• 4Ω switch connection between two ports.
• Minimal propagation delay through the switch.
• Low lCC.
• Zero bounce in flow-through mode.
• Control inputs compatible with TTL level.
Fast scan
Popular Specs Surfaced First
Product Parameter
Terminal Finish
Nickel/Palladium/Gold (Ni/Pd/Au)
Product Parameter
Supply Voltage-Min (Vsup)
4V
Product Parameter
Voltage Supply Source
Single Supply
Product Parameter
Power Supplies
5V
Product Parameter
Supply Type
Single
Product Parameter
Independent Circuits
1
Terminal Finish
Nickel/Palladium/Gold (Ni/Pd/Au)
Supply Voltage-Min (Vsup)
4V
Voltage Supply Source
Single Supply
Power Supplies
5V
Supply Type
Single
Independent Circuits
1
Propagation Delay
250 ps
Voltage - Supply
4V~5.5V
Turn On Delay Time
8.2 ns
Moisture Sensitivity Level (MSL)
1 (Unlimited)
RoHS Status
RoHS Compliant
JESD-609 Code
e4
HTSUS
8542.39.0001
ECCN Code
EAR99
REACH Status
REACH Unaffected
ECCN
EAR99
Lead Free
Lead Free
Mounting Type
Surface Mount
Packaging
Tape & Reel (TR)
Part Status
Obsolete
Operating Temperature
-40°C~85°C
Quiescent Current
3μA
Categories
Integrated Circuits (ICs)
Terminal Position
DUAL
Terminal Form
GULL WING
Supply Voltage
5V
Technology
CMOS
Width
4.4mm
Terminal Pitch
0.65mm
Package / Case
20-TSSOP (0.173, 4.40mm Width)
Throw Configuration
SPST
Manufacturer
ON Semiconductor
Subcategory
Bus Driver/Transceivers
Output Characteristics
3-STATE
Output Polarity
TRUE
Sub-Categories
Logic - Signal Switches, Multiplexers, Decoders
Number Of Functions
1
Operating Supply Voltage
5V
Radiation Hardening
No
Number Of Terminations
20
Number Of Pins
20
Number Of Bits
8
Mount
Surface Mount
Pbfree Code
yes
Length
6.5mm
Number Of Ports
2
Type
Bus Switch
Low Level Output Current
128mA
High Level Output Current
-128mA
Circuit
8 x 1:1
Lifecycle Status
LAST SHIPMENTS (Last Updated: 3 days ago)
Family
CBT/FST/QS/5C/B
Weight
191mg
Resistance
11Ohm
Manufacturer'S Part No.
FST3345MTCX
Base Part Number
3345
Common questions
Product FAQ
Quick answers for buyers reviewing FST3345MTCX, stock, documentation, and sourcing steps.
What is FST3345MTCX?
FST3345MTCX is a Logic - Signal Switches, Multiplexers, Decoders component from ON Semiconductor. This product page summarizes the core sourcing details buyers need before checking price, availability, documentation, or samples.
What package and description are listed for FST3345MTCX?
FST3345MTCX is listed with package reference TSSOP. The current product description is IC SWITCH BUS 8BIT TTL 20TSSOP, and buyers should confirm package, footprint, and electrical details against the datasheet or quotation notes before approval.
Is FST3345MTCX available in stock?
This page currently shows 20053 units in stock and 12344 units available for FST3345MTCX. 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 FST3345MTCX?
Yes. Use the Quick Quote or Request Sample action on this page to send the quantity and sourcing requirements for FST3345MTCX by ON Semiconductor. The TrustCompo team can review price, availability, and documentation support.
Is a datasheet available for FST3345MTCX?
Yes. This page links to the datasheet for FST3345MTCX by ON Semiconductor, so engineers and buyers can review package, ratings, and application details before purchase.
How should buyers verify FST3345MTCX before ordering?
Buyers should confirm the manufacturer, package, quantity, target price, RoHS or compliance needs, and any Certificate of Conformance or traceability requirements for FST3345MTCX before approving the order.
Logic - Signal Switches, Multiplexers, Decoders
Recommended Products
Explore more parts from the same subcategory to compare fit, stock, and sourcing options.
MC74LVX139DTR2
169 purchased
TSSOP
RoHS
Datasheet
IC DECODER/DEMUX DUAL 16-TSSOP
Reference price
Needs inquiry
74LCX257MTCX
128 purchased
TSSOP-16
RoHS
Datasheet
onsemi 74LCX257MTCX is a same-family quad 2:1 multiplexer candidate in TSSOP-16.
Reference price
Needs inquiry
SN74AHCT257PWR
128 purchased
TSSOP-16
RoHS
Datasheet
TI SN74AHCT257PWR is a 5 V AHCT quad 2-input data selector/multiplexer in TSSOP-16.
Reference price
Needs inquiry
SN74LVC257ADBR
128 purchased
SSOP-16
RoHS
Datasheet
TI SN74LVC257ADBR is an LVC quad 2:1 multiplexer in SSOP-16 for functional redesign paths.
Reference price
Needs inquiryMore sourcing insights
Articles
Explore related articles around FST3345MTCX, Logic - Signal Switches, Multiplexers, Decoders, and adjacent sourcing decisions so buyers can compare context before moving from evaluation to RFQ.
Jul 17, 2026
FPGA Supply 2026: A Buyer's Framework for AMD Xilinx, Intel Altera, Microchip, and Lattice SourcingA production-BOM FPGA sourcing guide for 2026 covering lifecycle commitment, redesign cost, and qualification boundaries across AMD Xilinx, Intel Altera, Microchip PolarFire, and Lattice families.
FPGAAMD XilinxIntel Altera
Jul 11, 2026
2026 Q3 Wide-Bandgap Power Read: Where SiC Is Scaling, Where GaN Is Winning, and Why Silicon Still MattersA 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.
wide-bandgap semiconductorsSiCGaN
Jul 8, 2026
Texas Instruments Lead Time and Price Pressure in 2026: What Analog and Power Buyers Should Do NowA 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.
Texas Instrumentsanalog ICpower management IC