Please refer to the English Version as our Official Version.

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)~~

Home Products Integrated Circuits (ICs)Logic - Signal Switches, Multiplexers, Decoders~~SN74CBT6845CDGVR~~

Image may be representation.
See specifications for product details.

~~Favorite~~

EXPRESS OPTION

Payment method

SN74CBT6845CDGVR - Texas Instruments

Name: Texas Instruments SN74CBT6845CDGVR
Brand: Texas Instruments
SKU: SN74CBT6845CDGVR
Availability: InStock
Rating: 5 (7 reviews)

Manufacturer Part Number: SN74CBT6845CDGVR

Manufacturer: Texas Instruments

Allelco Part Number: 98D-SN74CBT6845CDGVR

Warranty: 1 Year Allelco Warranty - Find out more

Stock Status:: 9,876 pcs available, New & Original

Parts Description: IC BUS SWITCH 8 X 1:1 20TVSOP

Package: 20-TVSOP

Data sheet: SN74CBT6845CDGV.pdf

Datasheets
Cylindrical Battery Holders.pdf

HTML Datasheet
SN74CBT6845CDW.pdf

RoHs Status: ROHS3 Compliant

~~Compare~~

Our certification

In stock: 9876

Specifications

SN74CBT6845CDGVR Tech Specifications
Texas Instruments - SN74CBT6845CDGVR technical specifications, attributes, parameters and parts with similar specifications to Texas Instruments - SN74CBT6845CDGVR

Product Attribute	Attribute Value
Manufacturer	Texas Instruments
Voltage Supply Source	Single Supply
Voltage - Supply	4.5V ~ 5.5V
Type	Bus Switch
Supplier Device Package	20-TVSOP
Series	74CBT
Package / Case	20-TFSOP (0.173', 4.40mm Width)

Product Attribute	Attribute Value
Package	Tape & Reel (TR)
Operating Temperature	-40°C ~ 85°C
Mounting Type	Surface Mount
Independent Circuits	1
Current - Output High, Low	-
Circuit	8 x 1:1
Base Product Number	74CBT6845

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 SN74CBT6845CDGVR handle signal integrity when switching between multiple bus lines in a 5V logic environment?: The SN74CBT6845CDGVR is engineered for clean signal transitions in 5V single-supply systems, operating across a voltage range of 4.5V to 5.5V. Its architecture minimizes propagation delay and ensures low on-state resistance (typically under 5 ohms), which helps maintain signal integrity during switching events. This makes it suitable for applications such as hot-swapping peripheral devices or managing data flow between microcontrollers and external memory interfaces where timing margins are critical.

What thermal considerations should be evaluated when deploying the SN74CBT6845CDGVR in compact PCB layouts with limited airflow?: Operating the SN74CBT6845CDGVR within its specified temperature range of -40°C to 85°C allows flexibility in harsh environments, but high ambient temperatures combined with continuous switching activity can increase junction temperature. Given its 20-pin TVSOP package with limited exposed thermal pad area, designers must monitor power dissipation—especially when driving capacitive loads at high frequencies—to avoid exceeding maximum ratings. Proper layout with adequate ground plane and spacing from heat-sensitive components is recommended.

Can the SN74CBT6845CDGVR safely interface with 3.3V devices while powered by a 5V supply?: Yes, the SN74CBT6845CDGVR supports mixed-voltage operation, allowing bidirectional communication between 3.3V and 5V domains. Its input and output thresholds are compatible with standard TTL and CMOS levels over the full supply range. However, when used in 5V mode, care must be taken not to exceed absolute maximum input voltages on any pin, even if the connected device operates at 3.3V. Level shifting is unnecessary in most cases, but signal rise times may require consideration due to capacitance loading.

How does the SN74CBT6845CDGVR compare to similar bus switches like the SN74CBTV3245 or SN74CBT3257 in terms of channel count and control interface?: Unlike the SN74CBTV3245, which offers dual 2:1 switches, or the SN74CBT3257 with four 2:1 paths, the SN74CBT6845CDGVR provides eight independent 1:1 bidirectional channels—ideal for full-bus isolation or routing. All three share similar supply ranges and control logic, but the CBT6845 lacks individual enable pins per channel, instead relying on a single OE (output enable) signal to disable all switches simultaneously. This makes the SN74CBT6845 more efficient for bulk disconnection but less granular than alternatives with per-channel control.

Is it possible to cascade multiple SN74CBT6845CDGVR units without degrading signal timing or increasing crosstalk?: Cascading multiple SN74CBT6845CDGVR devices is feasible but introduces cumulative propagation delay—approximately 5–10 ns per stage under typical conditions—which may affect high-speed serial links. Additionally, parasitic capacitance from multiple packages adds load, potentially reducing edge rates. To mitigate this, keep interconnections short and minimize stub lengths on bus traces. For systems requiring sub-nanosecond timing, consider using lower-capacitance buffer ICs or reducing the number of cascaded stages.

What precautions are necessary when enabling or disabling the SN74CBT6845CDGVR during live system operation?: Since the SN74CBT6845CDGVR supports hot insertion and removal, it can be switched on or off while the system is powered without damaging the device. However, abrupt transitions may cause transient glitches on connected buses due to internal switch race conditions. Designers should ensure that the OE (enable) signal changes occur when data is stable, or use software delays to prevent corruption. In noisy environments, adding series termination resistors (e.g., 22–100Ω) near each switch port can dampen reflections during switching.

How does the Moisture Sensitivity Level (MSL) rating of 1 for the SN74CBT6845CDGVR impact manufacturing reliability and storage requirements?: With an MSL rating of 1, the SN74CBT6845CDGVR is classified as "non-hygroscopic" and requires no special handling beyond standard ESD protocols. It can be stored indefinitely at ambient conditions without baking prior to reflow soldering, simplifying supply chain logistics and reducing production downtime. This contrasts with higher MSL parts that demand controlled humidity environments and bake cycles before assembly.

Can the SN74CBT6845CDGVR be used in automotive-grade applications requiring extended temperature cycling?: While the SN74CBT6845CDGVR operates reliably from -40°C to 85°C, which meets industrial standards, it is not qualified to AEC-Q100 specifications required for automotive systems. For automotive use, TI’s qualified versions like the SN74CBT6845AQ would be necessary. However, in non-automotive industrial or commercial designs where such qualification isn’t mandated, the SN74CBT6845CDGVR performs robustly under thermal cycling provided solder joints are well-designed and PCB materials match the coefficient of thermal expansion.

What impact does the 20-TVSOP packaging have on high-density PCB integration compared to SOIC-20W or TSSOP variants?: The 20-TVSOP (Thin Very Small Outline Package) used by the SN74CBT6845CDGVR features a smaller footprint than standard SOIC-20W and slightly reduced height, making it advantageous for space-constrained designs. Its lead pitch of 0.65 mm allows closer component placement, though it demands precise reflow profiles to avoid tombstoning. Thermal performance is moderate; without an exposed pad, heat dissipation relies mainly on conduction through the leads—adequate for low-power switching but potentially limiting in dense multi-device stacks.

Are there any known limitations in using the SN74CBT6845CDGVR for analog signal routing?: The SN74CBT6845CDGVR is optimized for digital signals and is not recommended for precision analog applications. Its on-resistance varies with input level, and leakage currents may introduce noise in sensitive analog paths. Additionally, bandwidth limitations and charge injection during switching can distort low-amplitude or high-impedance signals. For analog muxing, dedicated solutions like DG-series CMOS multiplexers offer superior linearity and lower distortion.

How does the RoHS3 compliance status of the SN74CBT6845CDGVR influence global regulatory adherence?: RoHS3 compliance means the SN74CBT6845CDGVR contains restricted substances below threshold limits, including lead, mercury, cadmium, hexavalent chromium, PBB, PBDE, and certain phthalates. This ensures compatibility with international regulations such as EU Directive 2011/65/EU and China’s Management Methods for Controlling Pollution by Electronic Information Products. Manufacturers can deploy this device globally without additional material certification efforts, reducing time-to-market risks.

What role does the base product number 74CBT play in selecting alternative parts to replace the SN74CBT6845CDGVR?: The base product 74CBT indicates a family of low-voltage, high-current bus switches designed for 3.3V and 5V systems. Parts sharing this base often have compatible electrical characteristics, pinouts, and control logic, enabling drop-in replacements. When substituting the SN74CBT6845CDGVR, verify package type, pin count, and key parameters like supply range and enable behavior. Alternatives include SN74CBT6845CP or SN74CBT6845CDR, but always validate timing and layout compatibility.

How should the SN74CBT6845CDGVR be protected in environments prone to electrostatic discharge (ESD)?: Although the SN74CBT6845CDGVR includes built-in ESD protection diodes, external transient suppression may still be needed in high-risk environments. Implementing series current-limiting resistors (10–100Ω) at each bus line and using TVS diodes rated for IEC 61000-4-2 contact discharges up to ±8 kV enhances robustness. Ensure PCB grounding follows best practices, with short return paths to minimize inductive loop areas susceptible to induced transients.

What design trade-offs exist between using the SN74CBT6845CDGVR versus FPGA-based soft-switching solutions for bus management?: The SN74CBT6845CDGVR offers deterministic, hardware-level switching with minimal latency and zero CPU overhead, ideal for real-time control. In contrast, FPGA-based routing introduces variable timing due to software abstraction and routing delays, though it provides greater flexibility and reconfigurability. For simple, fixed topologies, the discrete SN74CBT6845CDGVR reduces bill of materials cost and simplifies firmware complexity, whereas FPGAs suit evolving architectures needing runtime reconfiguration.

Does the SN74CBT6845CDGVR support bidirectional data flow without additional direction control logic?: Yes, the SN74CBT6845CDGVR inherently supports bidirectional communication—each switch functions as a transparent transmission gate. No direction control signal is required; data can flow in either direction through any enabled channel simultaneously. This simplifies system design for unidirectional or bidirectional busses like I²C, SPI, or parallel address/data lines, provided the host controller respects protocol timing during direction changes.

What is the expected lifetime and failure mode profile for the SN74CBT6845CDGVR under continuous switching stress?: Under normal operating conditions within rated voltage, temperature, and current limits, the SN74CBT6845CDGVR exhibits high reliability with typical failure mechanisms related to electromigration or bond wire degradation only under extreme stress. Continuous switching at elevated temperatures increases wear, but the device’s CMOS construction and robust process yield long operational life. Field failures are rare and usually traceable to improper layout, overvoltage transients, or exceeding junction temperature rather than intrinsic aging.

How does the ECCN classification of EAR99 affect export controls involving the SN74CBT6845CDGVR?: Classified under EAR99, the SN74CBT6845CDGVR falls under U.S. export administration regulations that generally permit worldwide shipment without license exceptions for most end uses. However, exports to embargoed countries or to entities on denied party lists remain restricted regardless of classification. Designers sourcing this part internationally should verify local import/export regulations and ensure compliance with end-use restrictions, particularly in defense or encryption-related applications.

What considerations apply when integrating the SN74CBT6845CDGVR into battery-powered devices requiring ultra-low quiescent current?: The SN74CBT6845CDGVR consumes negligible quiescent current when disabled (typically <1 µA), making it suitable for battery-operated systems. However, each active channel draws small leakage current (~1 nA typical), which becomes significant over many parallel paths or in long-term standby. If minimizing total off-state power is critical, consider disabling unused channels via the OE pin or selecting devices with lower Ioff. Still, for most portable applications, the SN74CBT6845CDGVR strikes a favorable balance between functionality and energy efficiency.

Parts with Similar Specifications

The three parts on the right have similar specifications to Texas Instruments SN74CBT6845CDGVR

Product Attribute
Part Number	SN74CBT6845CRGYRG4	SN74CBT6845CDBQRE4	SN74CBT6845CDBQRG4	SN74CBT6845CDBR
Manufacturer	Luminary Micro / Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments
Independent Circuits	-	-	-	-
Base Product Number	-	DAC34H84	MAX500	ADS62P42
Package / Case	-	196-LFBGA	16-DIP (0.300', 7.62mm)	64-VFQFN Exposed Pad
Voltage - Supply	-	-	-	-
Operating Temperature	-	-40°C ~ 85°C	0°C ~ 70°C	-40°C ~ 85°C
Series	-	-	-	-
Supplier Device Package	-	196-NFBGA (12x12)	16-PDIP	64-VQFN (9x9)
Voltage Supply Source	-	-	-	-
Current - Output High, Low	-	-	-	-
Package	-	Tape & Reel (TR)	Tube	Tape & Reel (TR)
Circuit	-	-	-	-
Mounting Type	-	Surface Mount	Through Hole	Surface Mount
Type	-	-	-	-

SN74CBT6845CDGVR Datasheet PDF

Download SN74CBT6845CDGVR pdf datasheets and Texas Instruments documentation for SN74CBT6845CDGVR - Texas Instruments.

Datasheets: Cylindrical Battery Holders.pdf
HTML Datasheet: SN74CBT6845CDW.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

Use your express account for shipment if you have one.
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

Global Common Shipment by DHL / UPS / FedEx / TNT / EMS / SF we support.
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
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.
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.

Visual inspection
Performance testing and reliability verification
Standardized full-process testing
Precise control of every parameter

We eliminate defective components and ensure the stable operation of electronic devices through professional quality standards.

Quality Inspection

Payment Support

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

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.

Phone: +00852 9146 4856
Email: info@allelco.com

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