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Home > Products > Integrated Circuits (ICs) > Logic > Signal Switches, Multiplexers, Decoders

Texas Instruments 74CBTLV3253PWRG4

Name: 74CBTLV3253PWRG4
Brand: Texas Instruments
SKU: 74CBTLV3253PWRG4
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 74CBTLV3253PWRG4

Manufacturer:: Texas Instruments

Category:: Signal Switches, Multiplexers, Decoders

Package:: 16-TSSOP (0.173", 4.40mm Width)

Datasheet:: 74CBTLV3253PWRG4.pdf

Description:: IC MUX/DEMUX 2 X 4:1 16TSSOP

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Product details

Overview

74CBTLV3253PWRG4 from Texas Instruments is a dual 1-of-4 low-voltage FET multiplexer/demultiplexer with 5 Ω typical on-state resistance, rail-to-rail I/O switching, and I_off support for partial-power-down operation. It operates from 2.3 V to 3.6 V, delivers sub-1 ns propagation delay at 3.3 V, and is used in high-speed data routing for enterprise computing and wired networking systems.

For engineers reviewing the 74CBTLV3253PWRG4 datasheet, 74CBTLV3253PWRG4 pinout, 74CBTLV3253PWRG4 application, or 74CBTLV3253PWRG4 equivalent, this device serves as a high-bandwidth, low-distortion analog/digital signal switch where minimal channel resistance, fast enable/disable timing, and power-off isolation are critical selection criteria.

Technical Context

The 74CBTLV3253PWRG4 implements two independent 1-of-4 bidirectional FET switches controlled by active-low OE inputs and 2-bit binary select lines (S0, S1). Each switch path supports rail-to-rail voltage translation between common A ports and four B ports, with no internal level-shifting circuitry.

Its I_off specification ensures <15 µA leakage when V_CC = 0 V and any I/O port is biased between 0–3.6 V, enabling safe back-drive isolation during system power sequencing. Switching performance is characterized across –40°C to 85°C with guaranteed t_en/t_dis ≤ 5.5 ns at 3.3 V.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage	2.3 V to 3.6 V - Enables direct interface with 2.5 V and 3.3 V logic domains without level shifters.
On-State Resistance	5 Ω typical at V_CC = 3 V, I_I = 64 mA - Minimizes voltage drop and signal attenuation in high-current analog/digital paths.
Propagation Delay	0.15–0.25 ns at V_CC = 3.3 V - Supports >1 GHz signal routing with negligible timing skew.
I_off Leakage	15 µA max at V_CC = 0 V - Prevents damaging back-current flow during partial power-down sequences.
ESD Rating	HBM ±2000 V - Meets industrial-grade ESD robustness requirements for board-level handling and operation.
Operating Temperature	–40°C to +85°C - Qualified for deployment in enterprise servers, telecom infrastructure, and industrial control environments.

Pinout & Package

TSSOP-16 package (5.00 mm × 4.40 mm), thin shrink small-outline package with exposed pad not present; lead finish NiPdAu, moisture sensitivity level 1 (260°C, unlimited reflow).

Pin/Terminal	Circuit Role	Design Meaning
1OE, 2OE	Active-low output enable	Disables both 1-of-4 switch banks independently; high state forces all B ports into high-impedance mode.
S0, S1	Binary select inputs	Control which of four B-port channels connects to corresponding A port (00→B1, 01→B2, 10→B3, 11→B4).
1A, 2A	Common I/O terminals	Bidirectional signal path endpoints; tolerate VI/O up to 4.6 V regardless of V_CC setting.
1B1–1B4, 2B1–2B4	Channel I/O terminals	Four per bank; each forms a low-R_on FET switch path with its A port when enabled and selected.
V_CC	Power supply	Single 2.3–3.6 V supply powers internal bias and switch control; bypass capacitor required at pin 16.
GND	Ground reference	Reference for all input thresholds and output levels; must be low-impedance connection to system ground plane.

Key Features

Feature	Design Value
Rail-to-rail I/O switching	Supports signal voltages from GND to 4.6 V independent of V_CC, enabling mixed-voltage domain interfacing without external clamping.
I_off partial-power-down protection	Blocks current flow between powered and unpowered system sections, eliminating need for external isolation diodes or power sequencing controllers.
5 Ω typical on-resistance	Reduces insertion loss and harmonic distortion in high-frequency analog signals (e.g., video, clock distribution) and preserves digital edge integrity.
Sub-1 ns enable/disable timing	Allows dynamic channel reconfiguration within nanosecond-scale windows, supporting time-division multiplexing in real-time communication links.
Functionally equivalent to QS3253	Enables drop-in replacement in legacy designs using IDT/RENESAS QS3253, preserving PCB layout and firmware control logic.

Applications

Enterprise Server Backplane Routing	Industrial Ethernet PHY Interface
Use Scenario: Dynamic assignment of PCIe lanes or SMBus channels between redundant controllers and hot-swap modules in 1U/2U rack servers. IC Role / Device Role / Timing Role: Bidirectional 1-of-4 analog switch providing low-latency, low-crosstalk signal path selection under BMC or CPLD control. Use Value: Enables firmware-driven lane failover with <5.5 ns enable timing and 5 Ω R_on to maintain PCIe Gen3 signal integrity.	Use Scenario: Multiplexing MDIO/MDC management bus and RMII clock/data lines between multiple Ethernet PHYs and a single MAC controller. IC Role / Device Role / Timing Role: Dual-channel FET switch isolating PHY-specific control and timing signals while sharing host resources. Use Value: Eliminates need for discrete logic gates or complex FPGA routing; rail-to-rail I/O handles 2.5 V/3.3 V PHY voltage mismatches.
Video Broadcast IP Transcoder I/O	Motor Drive Feedback Signal Conditioning
Use Scenario: Selecting between four HD-SDI or HDMI auxiliary data streams (e.g., embedded audio, metadata) for real-time transcoding in broadcast encoders. IC Role / Device Role / Timing Role: High-fidelity analog multiplexer preserving signal slew rate and minimizing group delay variation across channels. Use Value: 5 Ω R_on and <0.25 ns t_pd prevent jitter accumulation and amplitude droop in 1.5–3 Gbps serial video links.	Use Scenario: Routing isolated current-sense amplifier outputs or encoder quadrature signals to a shared ADC input in multi-axis servo drives. IC Role / Device Role / Timing Role: Low-leakage, high-Z analog switch enabling sequential sampling of feedback sensors without cross-talk or loading errors. Use Value: I_off <15 µA prevents erroneous current injection into powered-down sensor circuits during idle phases.

Enterprise Server Backplane Routing

Industrial Ethernet PHY Interface

Use Scenario: Dynamic assignment of PCIe lanes or SMBus channels between redundant controllers and hot-swap modules in 1U/2U rack servers.

IC Role / Device Role / Timing Role: Bidirectional 1-of-4 analog switch providing low-latency, low-crosstalk signal path selection under BMC or CPLD control.

Use Value: Enables firmware-driven lane failover with <5.5 ns enable timing and 5 Ω R_on to maintain PCIe Gen3 signal integrity.

Use Scenario: Multiplexing MDIO/MDC management bus and RMII clock/data lines between multiple Ethernet PHYs and a single MAC controller.

IC Role / Device Role / Timing Role: Dual-channel FET switch isolating PHY-specific control and timing signals while sharing host resources.

Use Value: Eliminates need for discrete logic gates or complex FPGA routing; rail-to-rail I/O handles 2.5 V/3.3 V PHY voltage mismatches.

Video Broadcast IP Transcoder I/O

Motor Drive Feedback Signal Conditioning

Use Scenario: Selecting between four HD-SDI or HDMI auxiliary data streams (e.g., embedded audio, metadata) for real-time transcoding in broadcast encoders.

IC Role / Device Role / Timing Role: High-fidelity analog multiplexer preserving signal slew rate and minimizing group delay variation across channels.

Use Value: 5 Ω R_on and <0.25 ns t_pd prevent jitter accumulation and amplitude droop in 1.5–3 Gbps serial video links.

Use Scenario: Routing isolated current-sense amplifier outputs or encoder quadrature signals to a shared ADC input in multi-axis servo drives.

IC Role / Device Role / Timing Role: Low-leakage, high-Z analog switch enabling sequential sampling of feedback sensors without cross-talk or loading errors.

Use Value: I_off <15 µA prevents erroneous current injection into powered-down sensor circuits during idle phases.

Equivalent & Alternatives

The following parts are listed as comparable options for similar FET multiplexer applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74CBTLV3253PWR	Same silicon die, identical electrical specs, RoHS-compliant NiPdAu finish, MSL Level-1, same TSSOP-16 footprint.	No functional difference; differs only in packaging suffix (G4 denotes green/lead-free compliance per TI spec).	Select 74CBTLV3253PWRG4 for full TI green-material compliance documentation and traceable sourcing; otherwise 74CBTLV3253PWR is functionally interchangeable.
QS3253QG	Functionally equivalent per TI documentation; 5.5 Ω max R_on vs. 8 Ω max for 74CBTLV3253PWRG4; HBM ESD rated at ±2000 V same.	Validated in legacy IDT-based designs; slightly higher R_on may impact high-current analog paths but acceptable for digital control buses.	Choose QS3253QG only when redesigning around existing IDT-qualified layouts; 74CBTLV3253PWRG4 offers tighter R_on tolerance and broader temperature validation.

Compared with SN74CBTLV3253PWR and QS3253QG, the 74CBTLV3253PWRG4 provides the lowest guaranteed on-resistance (5 Ω typ), strictest I_off leakage control (15 µA max), and full production support under TI's green materials program - making it optimal for new designs requiring high signal fidelity and long-term component availability.

Availability

74CBTLV3253PWRG4 is available at Aetrix Electronics and suitable for enterprise server backplanes, industrial Ethernet interfaces, and broadcast video transcoders requiring stable component supply across extended product lifecycles.

Supply support for 74CBTLV3253PWRG4 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor company specializing in analog, embedded processing, and connectivity technologies with over 90 years of innovation in high-reliability components.

The 74CBTLV3253PWRG4 belongs to TI's CBTLV logic family, engineered specifically for high-speed, low-voltage signal routing in datacenter, networking, and industrial automation systems where power efficiency and signal integrity are paramount.

FAQ

What is the maximum operating voltage for I/O pins on the 74CBTLV3253PWRG4?

The 74CBTLV3253PWRG4 supports I/O voltages from –0.5 V to 4.6 V regardless of V_CC level, enabling rail-to-rail signal switching and overvoltage tolerance in mixed-supply systems. This specification is validated across the full –40°C to +85°C operating range and allows safe interfacing with 5 V-tolerant peripherals even when V_CC is set to 2.5 V or 3.3 V.

Does the 74CBTLV3253PWRG4 support partial-power-down operation?

Yes, the 74CBTLV3253PWRG4 fully supports partial-power-down via its I_off feature: when V_CC = 0 V, leakage current is limited to 15 µA maximum for any I/O pin biased between 0–3.6 V. This ensures no damaging back-current flows between powered and unpowered subsystems, a key requirement in hot-swap and modular power architectures.

What is the on-state resistance specification for the 74CBTLV3253PWRG4 at 3.3 V supply?

At V_CC = 3.3 V, the 74CBTLV3253PWRG4 has a typical on-state resistance (R_on) of 5 Ω and a maximum of 7 Ω when tested with 64 mA current and 0 V input voltage. This low R_on minimizes insertion loss and maintains signal fidelity in both analog and high-speed digital applications such as PCIe lane switching or video signal routing.

Can the 74CBTLV3253PWRG4 replace the QS3253 in existing designs?

Yes, the 74CBTLV3253PWRG4 is explicitly documented by Texas Instruments as functionally equivalent to the QS3253. Pinout, timing, DC specifications, and switching behavior match closely - including 5 Ω R_on, rail-to-rail I/O, and I_off support - enabling direct substitution in most QS3253-based layouts without PCB or firmware changes.

What thermal metrics apply to the 74CBTLV3253PWRG4 in TSSOP-16 package?

The 74CBTLV3253PWRG4 in TSSOP-16 (PW) package has a junction-to-ambient thermal resistance (R_θJA) of 129.1°C/W, junction-to-board (R_θJB) of 87.1°C/W, and junction-to-case (top) (R_θJC(top)) of 67°C/W. These values assume standard JEDEC test conditions and guide heatsinking decisions for continuous operation at ambient temperatures up to +85°C.

74CBTLV3253PWRG4 Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: 74CBTLV

Package/Case:: 16-TSSOP (0.173", 4.40mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Discontinued at Digi-Key

Type:: Multiplexer/Demultiplexer

Circuit:: 2 x 4:1

Independent Circuits:: 1

Current - Output High, Low:: -

Voltage Supply Source:: Single Supply

Voltage - Supply:: 2.3V ~ 3.6V

Operating Temperature:: -40°C ~ 85°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 16-TSSOP

74CBTLV3253PWRG4 FAQ

1.How can I place an order for 74CBTLV3253PWRG4 through Aetrix?

Please submit a Request for Quotation (RFQ) for 74CBTLV3253PWRG4 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for 74CBTLV3253PWRG4 reliable?

The price and inventory of 74CBTLV3253PWRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74CBTLV3253PWRG4 is usually 5 days.

3.What payment methods are accepted for 74CBTLV3253PWRG4?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74CBTLV3253PWRG4 transactions.

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4.How is shipping managed for 74CBTLV3253PWRG4?

74CBTLV3253PWRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 74CBTLV3253PWRG4 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for 74CBTLV3253PWRG4?

For technical support, including 74CBTLV3253PWRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74CBTLV3253PWRG4 requirements.

6.How does Aetrix verify that 74CBTLV3253PWRG4 is sourced from the original manufacturer or authorized distributors?

All 74CBTLV3253PWRG4 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that 74CBTLV3253PWRG4 meets industry standards.

7.What is the process for return or replacement of 74CBTLV3253PWRG4?

All 74CBTLV3253PWRG4 units undergo pre-shipment inspection (PSI). If there is an issue with 74CBTLV3253PWRG4, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The 74CBTLV3253PWRG4 part is unused and in its original packaging.

Return procedure for 74CBTLV3253PWRG4:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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