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

Texas Instruments SN74LVC3G34YZPR

Name: SN74LVC3G34YZPR
Brand: Texas Instruments
SKU: SN74LVC3G34YZPR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SN74LVC3G34YZPR

Manufacturer:: Texas Instruments

Category:: Buffers, Drivers, Receivers, Transceivers

Package:: 8-XFBGA, DSBGA

Datasheet:: SN74LVC3G34YZPR.pdf

Description:: IC BUF NON-INVERT 5.5V 8DSBGA

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Product details

Overview

SN74LVC3G34YZPR from Texas Instruments is a triple non-inverting buffer gate IC designed for 1.65-V to 5.5-V V_CC operation, performing Y = A logic on three independent channels. It delivers ±24-mA output drive at 3.3 V, achieves 4.1-ns max propagation delay at 3.3 V, supports 5.5-V tolerant inputs, and features I_off for live insertion and partial-power-down protection. It is used in portable audio signal routing and level translation between mixed-voltage subsystems.

For engineers reviewing the SN74LVC3G34YZPR datasheet, SN74LVC3G34YZPR pinout, SN74LVC3G34YZPR application, or SN74LVC3G34YZPR equivalent, key selection criteria include its DSBGA-8 (1.91 mm × 0.91 mm) NanoFree™ package, 3-channel buffering with rail-to-rail output swing, I_off-enabled back-drive protection, and compatibility with 1.65–5.5-V supply domains in space-constrained consumer electronics.

Technical Context

The SN74LVC3G34YZPR implements three independent CMOS buffer stages with identical input/output characteristics per channel. Each buffer operates across 1.65–5.5 V, accepts inputs up to 5.5 V regardless of V_CC, and provides symmetrical ±24-mA drive capability at 3.3 V. Its I_off circuitry actively disables outputs when V_CC = 0 V, blocking current flow from powered inputs or outputs into the unpowered device.

Propagation delay is tightly specified from 1.4 ns (min) to 4.1 ns (max) at 3.3 V and 25°C, with temperature-stable performance across –40°C to +85°C. Output ground bounce (V_OLP) remains below 0.8 V and output undershoot (V_OHV) exceeds 2 V under same conditions, ensuring signal integrity in high-speed digital interfaces.

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 routing up to ~100 MHz clock/data rates without timing violation.
I_OH/I_OL	±24 mA at 3.3 V - Drives multiple standard CMOS loads or LEDs directly without external buffers.
I_off	±10 µA max - Prevents damaging back-current during hot-swap or partial power-down sequences.
Input Voltage Tolerance	0 V to 5.5 V - Allows down-translation from higher-voltage sources (e.g., 5-V MCU GPIO) to lower V_CC rails.
Package	DSBGA-8 (1.91 mm × 0.91 mm) - Ultra-compact footprint for ultra-thin portable devices with strict board area constraints.
ESD Rating	2500-V HBM - Meets industrial-grade robustness for handheld and docked consumer equipment.

Pinout & Package

SN74LVC3G34YZPR uses an 8-ball DSBGA (YZP) package with bottom-side solder balls. The die serves as the package body, enabling minimal height (0.5 mm typical) and thermal efficiency. Pin 1 is located in quadrant Q1 per tape-and-reel orientation.

Pin/Terminal	Circuit Role	Design Meaning
1A	Buffer Input 1	CMOS-compatible input accepting 0–5.5 V; must be tied to V_CC or GND if unused.
1Y	Buffer Output 1	Non-inverting buffered replica of 1A; drives ±24 mA at 3.3 V with rail-to-rail swing.
2A	Buffer Input 2	Independent input channel with identical voltage tolerance and logic behavior as 1A.
2Y	Buffer Output 2	Output stage electrically isolated from other channels; enables independent signal routing.
3A	Buffer Input 3	Third input with full 5.5-V tolerance; supports multi-source fan-out or parallel control paths.
3Y	Buffer Output 3	Final output channel; shares same drive strength, delay, and I_off behavior as 1Y/2Y.
GND	Ground Reference	Primary return path for all internal logic and output currents; requires low-impedance PCB connection.
V_CC	Power Supply	Single supply pin for all three buffers; bypass capacitor (0.1 µF) required adjacent to pin.

Key Features

Feature	Design Value
NanoFree™ DSBGA packaging	Die-as-package construction reduces board area by >50% vs. VSSOP/SM8, critical for slim mobile designs.
I_off partial-power-down	Enables safe live insertion and prevents back-drive damage when V_CC is off while system remains partially powered.
5.5-V tolerant inputs	Eliminates need for external level shifters when interfacing 5-V sensors or controllers to 1.8-/2.5-/3.3-V SoCs.
Low ICC (10 µA max)	Minimizes quiescent power in always-on subsystems such as audio codec control or status monitoring circuits.
High noise immunity	V_IL ≤ 0.3×V_CC, V_IH ≥ 0.7×V_CC ensures reliable switching in noisy portable environments with varying supply droop.

Applications

Audio Signal Routing	USB Peripheral Power Control
Use Scenario: Isolating and driving analog audio signals between baseband processor and headphone amplifier in MP3 players. IC Role / Device Role / Timing Role: Triple buffer isolates sensitive analog paths from digital switching noise while maintaining signal fidelity and DC coupling. Use Value: ±24-mA drive ensures low-impedance source for line-level outputs; 4.1-ns t_pd avoids audible timing skew across stereo channels.	Use Scenario: Enabling/disabling VBUS power to USB peripherals (keyboards, mice) based on host controller GPIO states. IC Role / Device Role / Timing Role: Logic-level translator and driver that converts 1.8-V host enable signals to 5-V-compatible control lines. Use Value: 5.5-V input tolerance allows direct connection to 5-V VBUS sense lines; I_off prevents leakage when host is asleep.
Display Interface Level Translation	Embedded PC Fan Speed Control
Use Scenario: Translating GPIO control signals from a 3.3-V embedded CPU to a 5-V display backlight driver IC. IC Role / Device Role / Timing Role: Non-inverting voltage translator ensuring compatible logic thresholds across disparate supply domains. Use Value: Rail-to-rail output swing guarantees valid HIGH/LOW levels at 5-V receiver inputs; no external resistors needed.	Use Scenario: Buffering PWM fan speed control signals from a 2.5-V microcontroller to drive a 12-V fan controller with optocoupler input. IC Role / Device Role / Timing Role: High-speed, low-latency buffer preserving PWM duty cycle accuracy and edge timing. Use Value: 4.1-ns max t_pd minimizes jitter in 25-kHz PWM; ±24-mA drive overcomes optocoupler CTR variation.

Audio Signal Routing

USB Peripheral Power Control

Use Scenario: Isolating and driving analog audio signals between baseband processor and headphone amplifier in MP3 players.

IC Role / Device Role / Timing Role: Triple buffer isolates sensitive analog paths from digital switching noise while maintaining signal fidelity and DC coupling.

Use Value: ±24-mA drive ensures low-impedance source for line-level outputs; 4.1-ns t_pd avoids audible timing skew across stereo channels.

Use Scenario: Enabling/disabling VBUS power to USB peripherals (keyboards, mice) based on host controller GPIO states.

IC Role / Device Role / Timing Role: Logic-level translator and driver that converts 1.8-V host enable signals to 5-V-compatible control lines.

Use Value: 5.5-V input tolerance allows direct connection to 5-V VBUS sense lines; I_off prevents leakage when host is asleep.

Display Interface Level Translation

Embedded PC Fan Speed Control

Use Scenario: Translating GPIO control signals from a 3.3-V embedded CPU to a 5-V display backlight driver IC.

IC Role / Device Role / Timing Role: Non-inverting voltage translator ensuring compatible logic thresholds across disparate supply domains.

Use Value: Rail-to-rail output swing guarantees valid HIGH/LOW levels at 5-V receiver inputs; no external resistors needed.

Use Scenario: Buffering PWM fan speed control signals from a 2.5-V microcontroller to drive a 12-V fan controller with optocoupler input.

IC Role / Device Role / Timing Role: High-speed, low-latency buffer preserving PWM duty cycle accuracy and edge timing.

Use Value: 4.1-ns max t_pd minimizes jitter in 25-kHz PWM; ±24-mA drive overcomes optocoupler CTR variation.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74LVC3G34DCUR	VSSOP-8 package (2.3 mm × 2.0 mm); higher R_θJA (227°C/W); rated for –40°C to 125°C.	Better thermal performance at elevated ambient; larger footprint unsuitable for ultra-thin form factors.	Select when extended temperature range or hand-solderability is prioritized over board area.
SN74LVC3G34DCTR	SM8 package (2.95 mm × 2.80 mm); highest R_θJA (220°C/W); same –40°C to 125°C rating.	Legacy footprint with wider pitch; easier automated assembly but occupies ~3.5× more area than YZP.	Choose for cost-sensitive industrial designs where board space is not constrained.

Compared with SN74LVC3G34DCUR and SN74LVC3G34DCTR, the SN74LVC3G34YZPR offers the smallest footprint and lowest profile for space-critical portable devices, though with reduced maximum operating temperature (–40°C to 85°C) and higher thermal resistance (140°C/W), making it optimal for consumer audio/video endpoints rather than under-hood or server applications.

Availability

SN74LVC3G34YZPR is available at Aetrix Electronics and suitable for portable audio, USB peripheral control, display interface translation, and embedded PC fan management requiring stable component supply and consistent NanoFree™ DSBGA sourcing.

Supply support for SN74LVC3G34YZPR 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 and embedded processing technologies, with leadership in low-power logic, precision analog, and high-reliability interface solutions.

The SN74LVC3G34YZPR belongs to TI's LVC logic family, engineered for ultra-low-voltage operation (1.65–5.5 V) and compact packaging to meet the signal-integrity and space requirements of next-generation portable electronics.

FAQ

What is the maximum operating temperature for SN74LVC3G34YZPR?

The SN74LVC3G34YZPR has a maximum operating free-air temperature of +85°C, as specified in the Recommended Operating Conditions table. This is lower than the –40°C to 125°C range of the VSSOP and SM8 variants due to thermal limitations of the DSBGA-8 package. Operation beyond +85°C risks parametric shift and reliability degradation.

Does SN74LVC3G34YZPR support level translation between different supply voltages?

Yes, SN74LVC3G34YZPR supports down-translation: its inputs accept voltages up to 5.5 V regardless of V_CC, allowing 5-V signals to safely drive the device when V_CC is set to 1.8 V, 2.5 V, or 3.3 V. Outputs swing rail-to-rail (0 V to V_CC), so it does not translate up - only down.

How should unused inputs be handled on SN74LVC3G34YZPR?

All unused inputs on SN74LVC3G34YZPR must be tied to either V_CC or GND to prevent floating nodes, which cause undefined logic states and increased ICC. TI's application report SCBA004 confirms this requirement. Leaving inputs unconnected may result in excessive current draw or erratic output behavior.

What is the purpose of the I_off feature in SN74LVC3G34YZPR?

The I_off feature in SN74LVC3G34YZPR disables all outputs when V_CC = 0 V, preventing current backflow from powered inputs or outputs into the unpowered device. This protects against damage during live insertion, partial power-down, or hot-swap events - a critical requirement in modular consumer electronics.

Can SN74LVC3G34YZPR drive LEDs directly?

Yes, SN74LVC3G34YZPR can drive LEDs directly: each output delivers up to 24 mA sink/source at 3.3 V, sufficient for indicator LEDs or low-current backlight segments. Ensure series resistance limits current to within absolute max ratings (±50 mA per output), and verify thermal dissipation under sustained load in the DSBGA package.

SN74LVC3G34YZPR Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: 74LVC

Package/Case:: 8-XFBGA, DSBGA

Packaging:: Tape & Reel (TR)

Product Status:: Active

Logic Type:: Buffer, Non-Inverting

Number of Elements:: 3

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 ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 8-DSBGA

SN74LVC3G34YZPR FAQ

1.How can I place an order for SN74LVC3G34YZPR through Aetrix?

Please submit a Request for Quotation (RFQ) for SN74LVC3G34YZPR 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 SN74LVC3G34YZPR reliable?

The price and inventory of SN74LVC3G34YZPR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVC3G34YZPR is usually 5 days.

3.What payment methods are accepted for SN74LVC3G34YZPR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LVC3G34YZPR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SN74LVC3G34YZPR?

SN74LVC3G34YZPR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SN74LVC3G34YZPR 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 SN74LVC3G34YZPR?

For technical support, including SN74LVC3G34YZPR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVC3G34YZPR requirements.

6.How does Aetrix verify that SN74LVC3G34YZPR is sourced from the original manufacturer or authorized distributors?

All SN74LVC3G34YZPR 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 SN74LVC3G34YZPR meets industry standards.

7.What is the process for return or replacement of SN74LVC3G34YZPR?

All SN74LVC3G34YZPR units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVC3G34YZPR, 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 SN74LVC3G34YZPR part is unused and in its original packaging.

Return procedure for SN74LVC3G34YZPR:

1.Submit a request within 90 days.

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

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