About us Contact Us Submit BOM
RFQs(0)
English
Close Menu
View All

Please refer to the English Version as our Official Version.Return

Europe
France(Français) Germany(Deutsch) Italy(Italia) Russian(русский) Poland(polski) Czech(Čeština) Luxembourg(Lëtzebuergesch) Netherlands(Nederland) Iceland(íslenska) Hungarian(Magyarország) Spain(español) Portugal(Português) Turkey(Türk dili) Bulgaria(Български език) Ukraine(Україна) Greece(Ελλάδα) Israel(עִבְרִית) Sweden(Svenska) Finland(Svenska) Finland(Suomi) Romania(românesc) Moldova(românesc) Slovakia(Slovenská) Denmark(Dansk) Slovenia(Slovenija) Slovenia(Hrvatska) Croatia(Hrvatska) Serbia(Hrvatska) Montenegro(Hrvatska) Bosnia and Herzegovina(Hrvatska) Lithuania(lietuvių) Spain(Português) Switzerland(Deutsch) United Kingdom(English)
Asia/Pacific
Japan(日本語) Korea(한국의) Thailand(ภาษาไทย) Malaysia(Melayu) Singapore(Melayu) Vietnam(Tiếng Việt) Philippines(Pilipino)
Africa, India and Middle East
United Arab Emirates(العربية) Iran(فارسی) Tajikistan(فارسی) India(हिंदी) Madagascar(malaɡasʲ)
South America / Oceania
New Zealand(Maori) Brazil(Português) Angola(Português) Mozambique(Português)
North America
United States(English) Canada(English) Haiti(Ayiti) Mexico(español)
HomeProductsIntegrated Circuits (ICs)Logic - Signal Switches, Multiplexers, DecodersSN74LVC257ADG4
SN74LVC257ADG4 Image
SN74LVC257ADG4 Image - 1
Image may be representation.
See specifications for product details.
Share
 Favorite
EXPRESS OPTION
Payment method

SN74LVC257ADG4 - Texas Instruments

Manufacturer Part Number
SN74LVC257ADG4
Manufacturer
Texas Instruments
Allelco Part Number
98D-SN74LVC257ADG4
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
13,077 pcs available, New & Original
Parts Description
IC MULTIPLEXER 4 X 2:1 16SOIC
Package
16-SOIC
Data sheet
SN74LVC257ADG4.pdf
RoHs Status
ROHS3 Compliant
Compare
Our certification
In stock: 13077

Required fields are indicated by an asterisk (*)
Please send RFQ, we will respond immediately.

Quantity

Specifications

SN74LVC257ADG4 Tech Specifications
Texas Instruments - SN74LVC257ADG4 technical specifications, attributes, parameters and parts with similar specifications to Texas Instruments - SN74LVC257ADG4

Product Attribute Attribute Value
Manufacturer Texas Instruments
Voltage Supply Source Single Supply
Voltage - Supply 1.65V ~ 3.6V
Type Multiplexer
Supplier Device Package 16-SOIC
Series 74LVC
Package / Case 16-SOIC (0.154", 3.90mm Width)
Product Attribute Attribute Value
Package Tube
Operating Temperature -40°C ~ 85°C
Mounting Type Surface Mount
Independent Circuits 1
Current - Output High, Low 24mA, 24mA
Circuit 4 x 2:1
Base Product Number 74LVC257

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 1 (Unlimited)
REACH Status REACH Unaffected
ECCN EAR99
HTSUS 8542.39.0001

Frequently Asked Questions(FAQ)

How does the SN74LVC257ADG4 handle voltage translation when interfacing between a 3.3V microcontroller and a 5V legacy peripheral, and what precautions are necessary to maintain signal integrity?
The SN74LVC257ADG4 operates over a supply range of 1.65V to 3.6V, making it suitable for low-voltage logic environments such as 3.3V systems. While it supports bidirectional voltage-level translation due to its LVC family architecture, it is not inherently bidirectional in function—this device is unidirectional with direction control via select inputs. To interface with a 5V peripheral, an external level-shifting circuit or a dedicated translator IC is required because the maximum VCC is limited to 3.6V. Direct connection of a 5V signal to the input without clamping could violate absolute maximum ratings and risk damage. Therefore, designers should incorporate zener diodes or Schottky clamps at inputs when translating from higher voltages, ensuring that no pin exceeds 3.6V under any condition.
What is the propagation delay impact of using the SN74LVC257ADG4 in high-speed data routing applications, and how does it compare to alternative multiplexers like the SN74LVC251AD?
The SN74LVC257ADG4 exhibits typical propagation delays in the range of 4.5 ns to 7 ns, depending on load capacitance and supply voltage (e.g., ~5.8 ns at 3.3V and 50 pF). This performance makes it viable for moderate-speed data routing up to approximately 100 MHz. In contrast, the SN74LVC251AD—a single 2:1 multiplexer—typically shows slightly lower propagation delay (~4 ns) due to reduced parasitic capacitance from fewer internal switches. However, the SN74LVC257ADG4 integrates four independent 2:1 channels, offering greater functional density. For applications prioritizing speed over integration, cascading multiple SN74LVC251ADs may yield marginally better timing, but at the cost of board space and increased routing complexity.
Can the SN74LVC257ADG4 be safely used in automotive temperature environments, and what design considerations apply if operating near the -40°C boundary?
The SN74LVC257ADG4 is specified for operation from -40°C to +85°C, which covers industrial temperature ranges but falls short of full automotive AEC-Q100 qualification. While some users deploy it in automotive edge systems with conservative derating, it is not officially rated for continuous use in harsh automotive environments where extended thermal cycling or higher reliability demands exist. If used near the -40°C limit, ensure stable power delivery and avoid rapid thermal transients that could affect input hysteresis thresholds. Additionally, verify that input signals remain within valid logic levels across the full temperature span, especially when driving capacitive loads.
What happens to the output enable behavior when the supply voltage drops below 1.65V on the SN74LVC257ADG4, and how does this affect system reset sequencing?
When the supply voltage to the SN74LVC257ADG4 falls below the minimum recommended 1.65V, the device enters an undefined state where outputs may glitch, latch incorrectly, or fail to respond to select inputs. The OE pins are not guaranteed to function reliably under undervoltage conditions, potentially causing unintended channel activation during power-up or brownout events. In system reset sequences, this can lead to bus contention if other devices expect deterministic behavior. It is critical to ensure that all supplies rise above 1.65V before enabling the SN74LVC257ADG4 and to monitor VCC stability using power-on-reset circuits to prevent erratic multiplexer switching.
How does the fan-out capability of the SN74LVC257ADG4 compare when driving CMOS versus TTL loads, and what drive strength adjustment might be needed for long traces?
The SN74LVC257ADG4 provides balanced high- and low-level output current of ±24 mA, enabling it to drive both CMOS logic families and standard TTL inputs without buffering. Compared to older TTL parts, CMOS loads draw negligible DC current, so fan-out is primarily limited by capacitive loading rather than sink/source capability. However, when routing traces longer than 10 cm at 3.3V, distributed capacitance can increase effective load beyond the datasheet’s assumed 50 pF. In such cases, adding a series termination resistor (e.g., 22–33 Ω) near the driver improves signal integrity by damping reflections, effectively extending usable fan-out distance without degrading rise/fall times significantly.
Are there any known substitution risks when replacing the SN74LVC257ADG4 with MC74LCX257DR2G in existing designs, particularly regarding package compatibility and pin functionality?
The MC74LCX257DR2G from ON Semiconductor is a functional substitute with identical logic function and electrical characteristics to the SN74LVC257ADG4. Both share the same 16-pin SOIC footprint and pinout, allowing direct replacement in most PCB layouts. However, subtle differences in manufacturing process may result in minor variations in propagation delay (±1 ns typical) and power consumption under dynamic switching. Additionally, while both comply with ROHS3, regional regulatory classifications (e.g., ECCN codes) differ slightly between distributors. Designers should revalidate timing budgets and thermal profiles after substitution, especially in high-reliability applications where traceability matters.
What are the implications of using the SN74LVC257ADG4 in a battery-powered IoT node with sleep modes, and how should unused channels be managed to minimize leakage?
In low-power IoT applications, the SN74LVC257ADG4 draws only microamps in standby when powered off, but active leakage increases with temperature and supply voltage. Unused multiplexer channels should have their select inputs tied to a known state (preferably through weak pull-up/down resistors to avoid floating), and corresponding OE pins driven inactive to prevent unnecessary switching noise. Since each channel includes internal pull-downs on select lines only when OE=0, leaving them floating can cause random selection. Moreover, disabling the entire chip during sleep reduces quiescent current further, improving battery life more effectively than simply leaving OE asserted.
How does crosstalk between channels in the SN74LVC257ADG4 manifest under simultaneous switching conditions, and what layout practices mitigate this?
Although the SN74LVC257ADG4 isolates channels electrically, crosstalk can occur through substrate coupling or shared supply paths during simultaneous transitions. Measured differential crosstalk is typically less than 0.3 V under normal conditions, but aggressive simultaneous switching of adjacent channels may induce transient injection into neighboring inputs, potentially violating setup/hold margins. To reduce this effect, separate power and ground planes for sensitive analog sections, minimize parallel routing of high-speed signals across channels, and place decoupling capacitors within 5 mm of the IC to stabilize local supply impedance. Ground stitching vias around the package perimeter also help contain return currents and suppress radiated interference.

Parts with Similar Specifications

The three parts on the right have similar specifications to Texas Instruments SN74LVC257ADG4

Product Attribute SN74LVC257ADBRG4 SN74LVC257ADRG4 SN74LVC257APWG4 SN74LVC257ADBRE4
Part Number SN74LVC257ADBRG4 SN74LVC257ADRG4 SN74LVC257APWG4 SN74LVC257ADBRE4
Manufacturer Luminary Micro / Texas Instruments Texas Instruments Luminary Micro / Texas Instruments Luminary Micro / Texas Instruments
Independent Circuits - - - -
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Mounting Type - Surface Mount Through Hole Surface Mount
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Voltage Supply Source - - - -
Voltage - Supply - - - -
Base Product Number - DAC34H84 MAX500 ADS62P42
Circuit - - - -
Type - - - -
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Series - - - -
Current - Output High, Low - - - -

SN74LVC257ADG4 Datasheet PDF

Download SN74LVC257ADG4 pdf datasheets and Texas Instruments documentation for SN74LVC257ADG4 - Texas Instruments.

Datasheets
SN54LVC257A, SN74LVC257A.pdf
HTML Datasheet
SN54LVC257A, SN74LVC257A.pdf

Customers Also Interested in

Recommended Products

Customer Reviews

Evaluation: 10 Articles

  • Nath***rooks
    Jun 11, 2026

    Installed this power component in a converter board. Output remained stable under different load conditions and thermal performance was better than expected.

  • Dani***alkerTech
    Jun 1, 2026

    Product works, but setup took more effort than expected. Once configured the MCU ran reliably, although documentation support felt older compared with newer platforms. Fine for maintenance projects.

  • Yuki***aka88
    May 26, 2026

    信号通信プロジェクトでこのRS-485トランシーバーを使用しました。設置は簡単で、長距離ケーブルでも通信は安定していました。消費電力も、以前使用していたものより低くなっています。

  • Stev***aker
    May 20, 2026

    Solid diode for power rectification. Works well in switching circuits.

  • Bran***Lewis
    May 11, 2026

    Compact FPGA with good performance. Suitable for basic signal processing tasks.

  • Oliv***arris
    May 7, 2026

    Reliable I/O expander. Works well in embedded control applications.

  • Jess***Jones
    Apr 17, 2026

    It offers good value for the price, and the specifications match the description. I’ve been using it for two days with no issues, and I’ll definitely buy it again if I need it in the future.

  • Mich***Smith
    Apr 17, 2026

    Shipping was on time, the component pins are neatly aligned, and I tested 10 of them with a multimeter—all readings were within the specified range. Highly recommended.

  • Aman***arris
    Apr 3, 2026

    It was great—the entire process, from placing the order to receiving the package, went very smoothly. The components were consistent, the price was fair, and I had a very pleasant shopping experience.

  • Mike***nch
    Apr 3, 2026

    Better than expected! The resistance and capacitance readings were spot-on, and it passed the test on the first try. The service was reliable, and the packaging was thoughtful—I highly recommend it.

Write a Review

Your Email address will not be published.

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.
  • QC (Quality Warranty)
  • Payment Support
  • Packaging
  • Certifications & Memberships

QC (Quality Warranty)

Allelco is committed to exceeding customer expectations through customer service excellence, order accuracy, and on-time delivery.
This is achieved through our commitment to the continual improvement of our processes, services, and products.


Strict quality inspection builds a solid foundation for electronic component quality.
  1. Visual inspection
  2. Performance testing and reliability verification
  3. Standardized full-process testing
  4. Precise control of every parameter
We eliminate defective components and ensure the stable operation of electronic devices through professional quality standards.
Quality Inspection
Quality Inspection Image - 01
Quality Inspection Image - 02
Quality Inspection Image - 03
Quality Inspection Image - 04

Payment Support

The payment method can be chosen from the methods shown below: Wire Transfer (T/T, Bank Transfer), Western Union, Credit card, PayPal.
  • HKBea
  • Paypal
  • MasterCard
  • Western-Union
  • VISA
Stable Delivery, Sincere Partnership — Your Faithful Supply Chain Partner
  • Efficient Supply Management
  • Cost-Saving Procurement
  • Fast Sourcing & Delivery
Contact us if you have any questions.

Packaging

Electrostatic Discharge Protection and Handling

All electrostatic-sensitive components are handled in accordance with electrostatic discharge control procedures. The products are hermetically sealed in anti-static safe packaging to prevent electrostatic damage. Appropriate labeling is also applied for identification and traceability. This ensures product integrity during storage, handling and transportation.


ESD

Certifications & Memberships

Third-party certified, strict quality control. Our certification
  • ISO 9001: 2015
  • ISO 13485: 2016
  • ISO 14001: 2015
  • ISO 28000: 2007
  • ISO 45001: 2018
  • GB/T 27922-2011
  • SMTA
  • IPC
  • ESD
  • PSMA
SN74LVC257ADG4 Image

SN74LVC257ADG4

Texas Instruments
98D-SN74LVC257ADG4

Want a better price? Add to Cart and Submit RFQ now, we'll contact you immediately.

Allelco
About Us
History
Certifications
Recruitment
Policies
Terms & Conditions
Privacy Policy
Cookie Policy
Services
Order Tracking
Return & Replacement
Frequently Asked Questions
Contact Us
Order
Shipping & Delivering
Payment Methods
My Account
The BlogsHot PartsChange LanguageNewsSite map
Contact Us
Headquarters Address:
Room C 13/F Harvard Commercial Building
105-111 Thomson Road Wan Chai
HongKong
Service Tel: +852-91464856
Service Email: info@allelco.com
Follow us
Copyright © 2012-2025 AllelcoElec.com. All rights reserved.
0 RFQ
Shopping cart (0 Items)
It is empty.
Submit RFQ
Compare List (0 Items)
It is empty.
Feedback

Your feedback matters! At Allelco, we value the user experience and strive to improve it constantly.
Please share your comments with us via our feedback form, and we'll respond promptly.
Thank you for choosing Allelco.

Subject
E-mail
Comments
Captcha
Drag or click to upload file
Upload File
types: .xls, .xlsx, .doc, .docx, .jpg, .png and .pdf.
Max file size: 10MB