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HomeProductsIntegrated Circuits (ICs)Interface - Analog Switches, Multiplexers, DemultiplexersFSA1257L8X
FSA1257L8X Image
Image may be representation.
See specifications for product details.

FSA1257L8X - onsemi

Manufacturer Part Number
FSA1257L8X
Manufacturer
onsemi
Allelco Part Number
32D-FSA1257L8X
ECAD Model
Parts Description
IC SW SPST-NCX2 1.15OHM 8MICROPK
Detailed Description
Package
8-UFQFN
Data sheet
FSA1256/FSA1257/FSA1258.pdf
RoHs Status
ROHS3 Compliant
In stock: 162950

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Specifications

FSA1257L8X Tech Specifications
onsemi - FSA1257L8X technical specifications, attributes, parameters and parts with similar specifications to onsemi - FSA1257L8X

Product Attribute Attribute Value  
Manufacturer onsemi  
Voltage - Supply, Single (V+) 1.65V ~ 5.5V  
Voltage - Supply, Dual (V±) -  
Switch Time (Ton, Toff) (Max) 35ns, 15ns  
Switch Circuit SPST - NC  
Supplier Device Package 8-MicroPak™  
Series -  
Package / Case 8-UFQFN  
Package Tape & Reel (TR)  
Operating Temperature -40°C ~ 85°C (TA)  
On-State Resistance (Max) 1.15Ohm  
Product Attribute Attribute Value  
Number of Circuits 2  
Multiplexer/Demultiplexer Circuit 1:1  
Mounting Type Surface Mount  
Current - Leakage (IS(off)) (Max) 2nA (Typ)  
Crosstalk -100dB @ 1MHz  
Charge Injection 20pC  
Channel-to-Channel Matching (ΔRon) 60mOhm  
Channel Capacitance (CS(off), CD(off)) 11.5pF  
Base Product Number FSA1257  
-3db Bandwidth 300MHz  

Parts Introduction

Manufacturer Part Number

FSA1257L8X

Manufacturer

onsemi

Introduction

Analog switch designed for multiplexing and demultiplexing applications

Product Features and Performance

Two SPST - NC switch circuits

On-State Resistance at maximum of 1.15Ohm

Excellent channel-to-channel matching, DeltaRon at 60mOhm

Wide single supply voltage range from 1.65V to 5.5V

Product Advantages

Low crosstalk at -100dB @ 1MHz

Fast switching times with Ton max at 35ns and Toff max at 15ns

High -3db Bandwidth of 300MHz

Low Charge Injection of 20pC

Low Channel Capacitance of 11.5pF

Ultra-low leakage current of 2nA typical

Key Technical Parameters

Number of Circuits: 2

Voltage - Supply, Single (V+): 1.65V ~ 5.5V

Switch Time (Ton, Toff) (Max): 35ns, 15ns

-3db Bandwidth: 300MHz

Quality and Safety Features

Operating Temperature range of -40°C to 85°C

Surface Mount type for robust assembly

Compatibility

Designed in a 8-UFQFN package for compatibility with various PCB designs

Application Areas

Ideal for high-speed data routing and signal switching applications

Product Lifecycle

Status is Obsolete with replacements or upgrades available

Several Key Reasons to Choose This Product

Exceptional signal integrity with low crosstalk and low channel capacitance

Versatile for single supply applications ranging from 1.65V to 5.5V

Fast switch response suitable for high-frequency application

Tape and Reel packaging for ease of automated manufacturing processes

Comes in compact 8-MicroPak package suitable for space-sensitive applications

Engineered for low-power and portable electronics

Parts with Similar Specifications

The three parts on the right have similar specifications to onsemi FSA1257L8X

Product Attribute FSA1257L8X FSA1257AL8X FSA1259K8X FSA1256AL8X
Part Number FSA1257L8X FSA1257AL8X FSA1259K8X FSA1256AL8X
Manufacturer onsemi onsemi onsemi onsemi
Channel Capacitance (CS(off), CD(off)) 11.5pF 11.5pF 21pF 11.5pF
Crosstalk -100dB @ 1MHz -100dB @ 1MHz -73dB @ 1MHz -100dB @ 1MHz
Charge Injection 20pC 20pC 15pC 20pC
Channel-to-Channel Matching (ΔRon) 60mOhm 60mOhm 50mOhm 60mOhm
Current - Leakage (IS(off)) (Max) 2nA (Typ) 2nA (Typ) 10nA 2nA (Typ)
Package / Case 8-UFQFN 8-UFQFN 8-VFSOP (0.091", 2.30mm Width) 8-UFQFN
Operating Temperature -40°C ~ 85°C (TA) -40°C ~ 85°C (TA) -40°C ~ 85°C (TA) -40°C ~ 85°C (TA)
Multiplexer/Demultiplexer Circuit 1:1 1:1 1:1 1:1
-3db Bandwidth 300MHz 300MHz 240MHz 300MHz
Base Product Number FSA1257 FSA1257 FSA12 FSA1256
Voltage - Supply, Single (V+) 1.65V ~ 5.5V 2.7V ~ 5.5V 1.65V ~ 5.5V 2.7V ~ 5.5V
Switch Time (Ton, Toff) (Max) 35ns, 15ns 35ns, 15ns 7.5ns, 11ns 35ns, 15ns
Switch Circuit SPST - NC SPST - NC SPST - NO SPST - NO
Number of Circuits 2 2 2 2
On-State Resistance (Max) 1.15Ohm 1.15Ohm 850mOhm 1.15Ohm
Mounting Type Surface Mount Surface Mount Surface Mount Surface Mount
Package Tape & Reel (TR) Tape & Reel (TR) Tape & Reel (TR) Tape & Reel (TR)
Supplier Device Package 8-MicroPak™ 8-MicroPak™ US8 8-MicroPak™
Voltage - Supply, Dual (V±) - - - -
Series - - - -

FSA1257L8X Datasheet PDF

Download FSA1257L8X pdf datasheets and onsemi documentation for FSA1257L8X - onsemi.

Datasheets
FSA1256/FSA1257/FSA1258.pdf
Environmental Information
onsemi RoHS.pdf Material Declaration FSA1257L8X.pdf
PCN Design/Specification
Logo 17/Aug/2017.pdf Die Material, Mold Compound 03/Oct/2008.pdf
PCN Packaging
Mult Devices 24/Oct/2017.pdf
PCN Obsolescence/ EOL
Obsolete Notice 15/Dec/2022.pdf
PCN Assembly/Origin
Mult Dev 06/Jan/2023.pdf

Shipment

Delivery Time

In-stock items can be shipped within 24 hours. Some parts will be arranged for delivery within 1-2 days from the date all items arrive at our warehouse. And Allelco ships order once a day at about 17:00, except Sunday. Once the goods are shipped, the estimated delivery time depends on the shipping methods and Delivery destination. The table below shows are the logistic time for some common countries.

Delivery Cost

  1. Use your express account for shipment if you have one.
  2. Use our account for the shipment. Refer to the table below for the approximate charges.
(Different time frame / countries / package size has different price.)

Delivery Method

  1. Global Common Shipment by DHL / UPS / FedEx / TNT / EMS / SF we support.
  2. Others more shipping ways, please get in touch with your customer manager.

Common Countries Logistic Time Reference
Region Country Logistic Time(Day)
America United States 5
Brazil 7
Europe Germany 5
United Kingdom 4
Italy 5
Oceania Australia 6
New Zealand 5
Asia India 4
Japan 4
Middle East Israel 6
DHL & FedEx Shipment Charges Reference
Shipment charges(KG) Reference DHL(USD$)
0.00kg-1.00kg USD$30.00 - USD$60.00
1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
The above table is for reference only. There may have some data bias for the uncontrollable factors.
Contact us if you have any questions.

Payment Support

The payment method can be chosen from the methods shown below: Wire Transfer (T/T, Bank Transfer), Western Union, Credit card, PayPal.

Your Faithful Supply Chain Partner -

Contact us if you have any questions.

  1. Phone
    +00852 9146 4856

Certifications & Memberships

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FSA1257L8X Image

FSA1257L8X

onsemi
32D-FSA1257L8X

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