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Home > Products > Integrated Circuits (ICs) > Logic > Buffers, Drivers, Receivers, Transceivers

Texas Instruments SN74LVC2G34DCK3

Name: SN74LVC2G34DCK3
Brand: Texas Instruments
SKU: SN74LVC2G34DCK3
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SN74LVC2G34DCK3

Manufacturer:: Texas Instruments

Category:: Buffers, Drivers, Receivers, Transceivers

Package:: 6-TSSOP, SC-88, SOT-363

Datasheet:: SN74LVC2G34DCK3.pdf

Description:: IC BUFFER NON-INVERT 5.5V SC70-6

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Product details

Overview

SN74LVC2G34DCK3 from Texas Instruments is a dual non-inverting buffer gate IC designed for 1.65-V to 5.5-V V_CC operation, performing Y = A logic on two independent channels. It delivers ±24-mA output drive at 3.3 V, achieves 4.1 ns max propagation delay at 3.3 V, and supports 5.5-V tolerant inputs - enabling level translation in portable audio, SSD, and embedded PC signal routing.

For engineers reviewing the SN74LVC2G34DCK3 datasheet, SN74LVC2G34DCK3 pinout, SN74LVC2G34DCK3 application, or SN74LVC2G34DCK3 equivalent, key selection criteria include I_off-enabled partial-power-down protection, SC70-6 package footprint (2.00 mm × 1.25 mm), 10-µA max ICC quiescent current, and compatibility with 1.65–5.5-V mixed-voltage system interfacing.

Technical Context

The SN74LVC2G34DCK3 implements two independent CMOS buffer stages with rail-to-rail output swing and balanced rise/fall times. Its I_off circuitry actively disables outputs when V_CC = 0 V, blocking back-current flow during live insertion or partial power-down - critical for hot-swap and modular systems.

Input voltage tolerance up to 5.5 V allows use as a down-translator: signals referenced to higher domains (e.g., 5-V microcontroller GPIO) can safely drive the device while V_CC operates at 1.8 V or 3.3 V, maintaining valid logic thresholds per JEDEC JESD8-12 and JESD8-13 standards.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CC Range	1.65 V to 5.5 V - enables interoperability across 1.8-V, 2.5-V, 3.3-V, and 5-V logic domains
Max t_pd	4.1 ns at 3.3 V - supports clean signal buffering up to ~100 MHz clock/data rates
I_OH/I_OL	±24 mA at 3.3 V - drives multiple CMOS loads or LEDs without external amplification
I_off	<±10 µA - prevents damaging backflow during power sequencing or board-level hot-plug events
Input Voltage Tolerance	0 V to 5.5 V - permits direct connection of 5-V signals to lower-V_CC systems without level-shifters
ICC (max)	10 µA - minimizes standby power in battery-powered portable devices like MP3 players and wireless headsets
ESD Rating	2500-V HBM - meets industrial-grade robustness requirements without external protection diodes

Pinout & Package

SN74LVC2G34DCK3 uses the SC70-6 (DCK) package: 2.00 mm × 1.25 mm body, 0.65-mm lead pitch, and single-row SMT layout optimized for high-density PCBs.

Pin/Terminal	Circuit Role	Design Meaning
1	1A	Buffer 1 input - accepts 0–5.5-V logic signals; internally pulled down if floating (per TI SCBA004 guidance)
2	GND	Ground reference - must be connected to system ground plane; shared return path for both buffers
3	2A	Buffer 2 input - electrically isolated from 1A; supports independent signal routing
4	2Y	Buffer 2 output - provides rail-to-rail CMOS output swing with 24-mA drive capability
5	V_CC	Power supply - bypass capacitor (0.1 µF ceramic) required adjacent to pin for noise suppression
6	1Y	Buffer 1 output - identical electrical characteristics to 2Y; no internal feedback or enable control

Key Features

Feature	Design Value
NanoFree™ packaging	Dies-as-package construction eliminates leadframe, reducing SC70 footprint by 40% vs. standard SOT-23
I_off partial-power-down	Enables safe hot-insertion into powered-backplane systems without latch-up or bus contention
5.5-V tolerant inputs	Eliminates need for external level-shifting components when interfacing 5-V legacy peripherals
Low ground bounce (V_OLP)	<0.8 V at 3.3 V - ensures stable low-state integrity during fast switching into light capacitive loads
Latch-up immunity	>100 mA per JESD78 Class II - guarantees robust operation under transient overvoltage conditions

Applications

Audio Signal Routing	Solid-State Drive (SSD) Control
Use Scenario: Isolating and strengthening I²S or SPDIF data lines between codec and DAC in portable audio docks. IC Role / Device Role / Timing Role: Dual buffer providing gain-of-1 signal conditioning with matched propagation delay across both channels. Use Value: Prevents signal degradation from trace capacitance and fanout loading while maintaining timing alignment between left/right audio paths.	Use Scenario: Driving NAND flash address/control lines in client SSD modules where host controller operates at 3.3 V but flash requires 1.8-V signaling. IC Role / Device Role / Timing Role: Level translator and driver enabling 3.3-V host GPIO to interface with 1.8-V flash command bus. Use Value: Eliminates discrete MOSFET translators, reduces BOM count, and maintains sub-5-ns timing margin for high-speed toggle commands.
Embedded PC GPIO Expansion	Wireless Peripherals Interface
Use Scenario: Buffering and isolating USB hub reset and activity indicator signals in compact embedded PCs. IC Role / Device Role / Timing Role: Non-inverting buffer ensuring clean, high-drive assertion of reset pulses to downstream USB devices. Use Value: Guarantees full-rail reset pulse amplitude and fast edge rates even with 20-pF PCB trace + connector capacitance.	Use Scenario: Driving LED status indicators and button-sense lines in Bluetooth keyboards/mice operating from single-cell Li-ion (2.7–4.2 V). IC Role / Device Role / Timing Role: Low-quiescent-current buffer translating MCU GPIO to visible LED drive levels. Use Value: Delivers 24-mA sink/source at 3.3 V while consuming only 10 µA in standby - extending battery life beyond 6 months.

Audio Signal Routing

Solid-State Drive (SSD) Control

Use Scenario: Isolating and strengthening I²S or SPDIF data lines between codec and DAC in portable audio docks.

IC Role / Device Role / Timing Role: Dual buffer providing gain-of-1 signal conditioning with matched propagation delay across both channels.

Use Value: Prevents signal degradation from trace capacitance and fanout loading while maintaining timing alignment between left/right audio paths.

Use Scenario: Driving NAND flash address/control lines in client SSD modules where host controller operates at 3.3 V but flash requires 1.8-V signaling.

IC Role / Device Role / Timing Role: Level translator and driver enabling 3.3-V host GPIO to interface with 1.8-V flash command bus.

Use Value: Eliminates discrete MOSFET translators, reduces BOM count, and maintains sub-5-ns timing margin for high-speed toggle commands.

Embedded PC GPIO Expansion

Wireless Peripherals Interface

Use Scenario: Buffering and isolating USB hub reset and activity indicator signals in compact embedded PCs.

IC Role / Device Role / Timing Role: Non-inverting buffer ensuring clean, high-drive assertion of reset pulses to downstream USB devices.

Use Value: Guarantees full-rail reset pulse amplitude and fast edge rates even with 20-pF PCB trace + connector capacitance.

Use Scenario: Driving LED status indicators and button-sense lines in Bluetooth keyboards/mice operating from single-cell Li-ion (2.7–4.2 V).

IC Role / Device Role / Timing Role: Low-quiescent-current buffer translating MCU GPIO to visible LED drive levels.

Use Value: Delivers 24-mA sink/source at 3.3 V while consuming only 10 µA in standby - extending battery life beyond 6 months.

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual buffer applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74LVC2G34DBVR	SOT-23-6 package (2.90 mm × 1.60 mm); 165°C/W R_θJA; rated for –40°C to 125°C	Better thermal performance and wider temperature range; larger footprint limits ultra-dense layouts	Select when board space permits and extended temperature operation is required
SN74LVC2G34DRLR	SOT-5X3-6 package (1.60 mm × 1.20 mm); 142°C/W R_θJA; same –40°C to 125°C rating	Smaller than SC70 but lacks NanoFree die-as-package benefits; slightly higher thermal resistance than DCK	Choose for cost-sensitive designs needing minimal footprint without NanoFree premium

Compared with SN74LVC2G34DBVR and SN74LVC2G34DRLR, the SN74LVC2G34DCK3 offers the smallest silicon-area-normalized footprint (NanoFree) and lowest parasitic capacitance (3.5 pF C_i), making it optimal for high-frequency portable designs where board area and signal integrity are constrained.

Availability

SN74LVC2G34DCK3 is available at Aetrix Electronics and suitable for portable audio docks, SSD control interfaces, and embedded PC GPIO expansion requiring stable component supply and long-term manufacturability.

Supply support for SN74LVC2G34DCK3 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 leader specializing in analog, embedded processing, and connectivity technologies with over 50 years of innovation in logic and interface solutions.

The SN74LVC2G34DCK3 belongs to TI's LVC (Low-Voltage CMOS) logic family, engineered for low-power, high-speed signal buffering in space-constrained portable and industrial systems with mixed-voltage interfaces.

FAQ

What is the maximum operating temperature for SN74LVC2G34DCK3?

The SN74LVC2G34DCK3 is rated for operation from –40°C to 125°C ambient temperature. This specification applies to all SC70-packaged variants including SN74LVC2G34DCK3, and is validated per JEDEC JESD51 thermal test standards using the 259°C/W junction-to-ambient thermal resistance value published in the datasheet.

Does SN74LVC2G34DCK3 support level translation between 5-V and 3.3-V logic domains?

Yes, SN74LVC2G34DCK3 supports down-translation: its inputs tolerate voltages up to 5.5 V regardless of V_CC, allowing 5-V signals to drive the device while V_CC is set to 3.3 V or lower. The output swings rail-to-rail between GND and V_CC, so SN74LVC2G34DCK3 outputs are 3.3-V referenced when V_CC = 3.3 V.

Can SN74LVC2G34DCK3 drive LEDs directly?

Yes, SN74LVC2G34DCK3 can drive standard LEDs directly: each output delivers up to 24 mA sink/source current at 3.3 V, sufficient for indicator LEDs with series resistors. For example, with V_CC = 3.3 V and a red LED (V_F ≈ 1.8 V), a 47-Ω resistor limits current to ~23 mA - within absolute maximum ratings and verified in TI application note SCBA004.

Is SN74LVC2G34DCK3 pin-compatible with other SN74LVC2G34 package variants?

No, SN74LVC2G34DCK3 is not pin-compatible with DBV (SOT-23), DRL (SOT-5X3), or YZP (DSBGA) variants. Although all share identical pin functions (1A, GND, 2A, 2Y, V_CC, 1Y), their physical pinouts differ: SC70 places 1A at Pin 1 and 1Y at Pin 6, while SOT-23 rotates pin order. Layout redesign is required when substituting packages.

What decoupling capacitor value is recommended for SN74LVC2G34DCK3?

A 0.1-µF ceramic capacitor is recommended for SN74LVC2G34DCK3, placed as close as possible to the V_CC (Pin 5) and GND (Pin 2) pins. TI's layout guidelines specify this value to suppress high-frequency supply noise generated by the 24-mA output transitions, and the capacitor must be X7R or better dielectric with ≤2-mm trace length to maintain effective impedance below 100 MHz.

SN74LVC2G34DCK3 Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: 74LVC

Package/Case:: 6-TSSOP, SC-88, SOT-363

Packaging:: Tape & Reel (TR)

Product Status:: Active

Logic Type:: Buffer, Non-Inverting

Number of Elements:: 2

Number of Bits per Element:: 1

Input Type:: -

Output Type:: Push-Pull

Current - Output High, Low:: 32mA, 32mA

Voltage - Supply:: 1.65V ~ 5.5V

Operating Temperature:: -40°C ~ 125°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SC-70-6

SN74LVC2G34DCK3 FAQ

1.How can I place an order for SN74LVC2G34DCK3 through Aetrix?

Please submit a Request for Quotation (RFQ) for SN74LVC2G34DCK3 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 SN74LVC2G34DCK3 reliable?

The price and inventory of SN74LVC2G34DCK3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVC2G34DCK3 is usually 5 days.

3.What payment methods are accepted for SN74LVC2G34DCK3?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LVC2G34DCK3 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SN74LVC2G34DCK3?

SN74LVC2G34DCK3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SN74LVC2G34DCK3 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 SN74LVC2G34DCK3?

For technical support, including SN74LVC2G34DCK3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVC2G34DCK3 requirements.

6.How does Aetrix verify that SN74LVC2G34DCK3 is sourced from the original manufacturer or authorized distributors?

All SN74LVC2G34DCK3 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 SN74LVC2G34DCK3 meets industry standards.

7.What is the process for return or replacement of SN74LVC2G34DCK3?

All SN74LVC2G34DCK3 units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVC2G34DCK3, 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 SN74LVC2G34DCK3 part is unused and in its original packaging.

Return procedure for SN74LVC2G34DCK3:

1.Submit a request within 90 days.

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

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