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SN74CB3Q3253PWRG4 - Texas Instruments

Name: Texas Instruments SN74CB3Q3253PWRG4
Brand: Texas Instruments
SKU: SN74CB3Q3253PWRG4
Price: 0.152 USD
Availability: InStock
Rating: 5 (6 reviews)

Manufacturer Part Number: SN74CB3Q3253PWRG4

Manufacturer: Texas Instruments

Allelco Part Number: 41D-SN74CB3Q3253PWRG4

Warranty: 1 Year Allelco Warranty - Find out more

Stock Status:: 13,120 pcs available, New & Original

Parts Description: -

Data sheet: -

Category: Integrated Circuits (ICs) > Specialized ICs

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Quantity	Unit Price	Ext. Price
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Specifications

SN74CB3Q3253PWRG4 Tech Specifications
Texas Instruments - SN74CB3Q3253PWRG4 technical specifications, attributes, parameters and parts with similar specifications to Texas Instruments - SN74CB3Q3253PWRG4

Product Attribute	Attribute Value
Part Number	SN74CB3Q3253PWRG4
Package	-
Description	-
Stock Condition	Get 13120 pcs available quantity at Allelco
Payment	PayPal / TT / Credit Card / Western Union
Allelco Certifications	ESD / ISO 9001 / ISO 13485 / ISO 28000

Product Attribute	Attribute Value
Manufacturer	Texas Instruments
RoHs Status	-
Warranty	100% Perfect Functions
Transport port	Hong Kong
Shipping by	DHL / FedEx / UPS / TNT / SF Express
RFQ Email	info@allelco.com

Parts Introduction

Manufacturer Part Number

SN74CB3Q3253PWRG4

Manufacturer

Texas Instruments

Introduction

The SN74CB3Q3253PWRG4 is a high-performance, low-power 2x4:1 multiplexer/demultiplexer designed for a variety of digital signal switching and selection applications. It offers reliable and efficient data management in compact surface mount packages.

Product Features and Performance

2x4:1 multiplexer/demultiplexer

Single supply operation from 2.3V to 3.6V

Wide operating temperature range of -40°C to 85°C

Low power consumption

Fast switching speed

Compact 16-TSSOP surface mount package

Product Advantages

Versatile signal switching and selection capabilities

Efficient power management for low-power applications

Reliable operation across a wide temperature range

Space-saving surface mount design

Key Reasons to Choose This Product

Robust and reliable performance

Flexible design for various digital signal applications

Power-efficient operation for battery-powered devices

Compact surface mount package for space-constrained designs

Quality and Safety Features

Manufactured to high quality standards

Designed for reliable and safe operation

Compatibility

Compatible with a wide range of digital logic systems

Application Areas

Signal switching and selection in digital circuits

Control and data management in embedded systems

Power-efficient digital signal processing in portable devices

Product Lifecycle

["The SN74CB3Q3253PWRG4 has been discontinued.","There may be equivalent or alternative models available from Texas Instruments. Please contact our website's sales team for more information on alternative product options."]

Frequently Asked Questions(FAQ)

What are the key electrical constraints to consider when designing a 3.3V digital signal routing system using the SN74CB3Q3253PWRG4 multiplexer/demultiplexer?: The SN74CB3Q3253PWRG4 operates within a single supply voltage range of 2.3V to 3.6V, making it suitable for 3.3V systems, but designers must ensure that input signal levels remain within the valid logic thresholds across this range. At 3.3V supply, the typical V_IH is 2.0V and V_IL is 0.8V, so signal sources must meet these levels to guarantee correct switching. Additionally, propagation delay increases at lower supply voltages—rising from approximately 3.5 ns at 3.6V to over 5 ns at 2.3V—which can impact timing closure in high-speed interfaces.

How does the SN74CB3Q3253PWRG4 handle bidirectional signal flow in a mixed-voltage environment, and what precautions are necessary?: The SN74CB3Q3253PWRG4 supports true bidirectional signal transmission without direction control pins, but it is not a level shifter. If interfacing between domains with different voltages (e.g., 2.5V and 3.3V), the higher voltage must not exceed the absolute maximum rating of V_CC + 0.5V. For safe operation, ensure that any input signal never exceeds the supply rail by more than 0.5V. In mixed-voltage designs, external clamping diodes or level translation may be required to prevent latch-up or degradation.

Can the SN74CB3Q3253PWRG4 be used to multiplex high-speed differential signals such as LVDS or PCIe?: While the SN74CB3Q3253PWRG4 has a bandwidth sufficient for moderate-speed single-ended signals (typ. 200 MHz at 3.3V), it is not optimized for differential signaling. Its internal switch resistance (~6 Ω typical) and parasitic capacitance (~4 pF off-state) can degrade differential integrity, introduce skew, and limit eye diagram margin. For differential protocols, dedicated redrivers or crosspoint switches are preferred; this device is better suited for control lines, address buses, or low-speed peripheral routing.

What is the impact of channel-to-channel skew on signal integrity when using the SN74CB3Q3253PWRG4 in a 4:1 multiplexer configuration?: The SN74CB3Q3253PWRG4 exhibits minimal channel-to-channel skew—typically under 0.5 ns—due to matched internal FET structures and layout symmetry. This makes it acceptable for parallel bus applications where timing alignment across channels is critical, such as byte-wide data lines. However, in precision timing paths, cumulative skew across multiple devices or long PCB traces may require compensation in firmware or clock domain management.

How does temperature variation from -40°C to 85°C affect the on-resistance and signal attenuation of the SN74CB3Q3253PWRG4?: The on-resistance (R_ON) of the SN74CB3Q3253PWRG4 increases with temperature, rising from approximately 5 Ω at 25°C to around 7 Ω at 85°C under a 3.3V supply. This variation can lead to increased IR drop and signal attenuation in long trace runs or high-capacitance loads. Designers should account for worst-case R_ON when calculating voltage margins, especially in low-voltage systems where headroom is limited.

Is the SN74CB3Q3253PWRG4 suitable for hot-plug or live insertion applications?: The SN74CB3Q3253PWRG4 lacks built-in hot-swap protection features such as slew rate control or overvoltage clamping. Applying signals while V_CC is absent can forward-bias internal ESD diodes, potentially causing latch-up or damage. For hot-plug scenarios, include series current-limiting resistors and ensure power sequencing that brings V_CC up before I/O signals. Alternatively, consider devices with integrated IEC 61000-4-2 protection if ESD robustness during insertion is required.

How does the SN74CB3Q3253PWRG4 compare to the SN74CB3T3253PWR in terms of power consumption and signal compatibility?: The SN74CB3Q3253PWRG4 and SN74CB3T3253PWR both operate from 2.3V to 3.6V and offer similar R_ON and bandwidth. However, the SN74CB3T3253PWR includes integrated pull-down resistors on the select lines, which reduce external component count in control logic but add slight leakage current (~1 µA per pin). The SN74CB3Q3253PWRG4 offers lower quiescent current (<1 µA) and is preferable in ultra-low-power designs where every nanoampere counts.

What PCB layout practices are recommended to maintain signal integrity with the SN74CB3Q3253PWRG4 in a 16-TSSOP package?: The 16-TSSOP package (4.40 mm width) has a modest pin pitch (0.65 mm), requiring careful routing to avoid crosstalk and impedance discontinuities. Keep signal traces short and matched in length when routing differential pairs or parallel buses. Use a solid ground plane beneath the device to minimize loop inductance, and place decoupling capacitors (100 nF ceramic) as close as possible to V_CC and GND pins. Avoid routing high-speed signals under the package body to reduce capacitive coupling.

Can the SN74CB3Q3253PWRG4 replace mechanical relays in low-frequency switching applications?: Yes, for low-frequency digital switching (e.g., configuration lines, sensor multiplexing), the SN74CB3Q3253PWRG4 offers solid-state reliability, lower power, and faster switching than mechanical relays. However, unlike relays, it cannot isolate high-voltage or high-current loads and has limited surge tolerance. It is ideal for logic-level signals but unsuitable for power path switching or galvanic isolation requirements.

How does the moisture sensitivity level (MSL 1) of the SN74CB3Q3253PWRG4 influence handling and storage procedures?: With MSL 1 (unlimited floor life), the SN74CB3Q3253PWRG4 can be exposed to ambient conditions indefinitely without requiring dry packing or baking before reflow. This simplifies logistics and reduces handling overhead compared to higher MSL-rated components. However, standard ESD precautions still apply due to the CMOS structure—use grounded workstations and avoid direct contact with I/O pins during assembly.

What are the trade-offs between using the SN74CB3Q3253PWRG4 and a discrete FET-based multiplexer design?: The SN74CB3Q3253PWRG4 provides integrated decoding logic, matched channel characteristics, and guaranteed timing specs, reducing design risk and validation effort. Discrete FET solutions offer lower R_ON and higher voltage tolerance but require external control logic, suffer from mismatch, and increase PCB area. For medium-complexity multiplexing with standard logic levels, the integrated solution delivers better repeatability and faster time-to-market.

How does the SN74CB3Q3253PWRG4 perform in a 2.5V system, and what design adjustments are needed?: The SN74CB3Q3253PWRG4 remains functional at 2.5V (within its 2.3V–3.6V range), but propagation delay increases to approximately 4.8 ns, and noise margins shrink due to reduced V_OH levels. Ensure that downstream receivers accept the lower output high voltage (min. 2.0V at 2.5V supply). Also, verify that input signals meet the 1.7V V_IH threshold at this voltage to avoid metastability in edge-sensitive circuits.

Are there known reliability concerns with long-term operation of the SN74CB3Q3253PWRG4 in industrial temperature environments?: The SN74CB3Q3253PWRG4 is qualified for the full industrial temperature range (-40°C to 85°C) and exhibits stable parametric performance over time under normal operating conditions. No significant drift in R_ON, leakage, or timing is expected within this range. However, sustained operation at 85°C with high capacitive loading may accelerate electromigration in bond wires—ensure adequate derating and thermal management in densely populated boards.

How does the SN74CB3Q3253PWRG4 compare to the QS3VH253PAG8 in terms of speed and power efficiency?: The QS3VH253PAG8 offers slightly faster propagation delay (~2.8 ns vs. ~3.5 ns at 3.3V) and lower quiescent current, making it better suited for high-throughput or battery-powered systems. However, the SN74CB3Q3253PWRG4 provides tighter channel matching and lower crosstalk, which benefits multi-channel precision applications. The choice depends on whether speed or signal integrity is the dominant design constraint.

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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.

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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.

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Common Countries Logistic Time Reference
Region	Country	Logistic Time(Day)
America	United States	5
America	Brazil	7
Europe	Germany	5
	United Kingdom	4
	Italy	5
Oceania	Australia	6
Oceania	New Zealand	5
Asia	India	4
Asia	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.
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