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Texas Instruments SN74LVC1G34DCKT
- Part No.:
- SN74LVC1G34DCKT
- Manufacturer:
- Texas Instruments
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
SN74LVC1G34DCKT.pdf
- Description:
- IC BUF NON-INVERT 5.5V SC70-5
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SN74LVC1G34 from Texas Instruments is a single non-inverting CMOS buffer gate designed for 1.65V to 5.5V operation, delivering ±24mA output drive at 3.3V, 3.5ns max propagation delay (VCC = 3.3V, CL = 15pF), and 1μA max ICC. It serves as a level-translating signal conditioner in compact portable audio and embedded interface paths.
For engineers reviewing the SN74LVC1G34 datasheet, SN74LVC1G34 pinout, SN74LVC1G34 application, or SN74LVC1G34 equivalent, key selection criteria include Ioff-enabled live insertion support, 5.5V-tolerant inputs with down-translation to VCC, ultra-small SC70-5 (DCK) package footprint (2.0mm × 2.1mm), and guaranteed operation across –40°C to 125°C for automotive-adjacent industrial designs.
Technical Context
The SN74LVC1G34 implements a single positive-logic buffer (Y = A) using advanced LVC CMOS process technology. Its Ioff circuitry actively disables outputs during partial power-down, blocking back-drive current and enabling hot-plug capability without latch-up risk.
It supports mixed-voltage system interfacing via 5.5V-tolerant inputs that operate correctly across 1.65–5.5V VCC, with output voltage swing rail-to-rail (0V to VCC) and defined VOL/VOH across all supply voltages. Propagation delay remains stable under varying load capacitance (≤50pF) and temperature (–40°C to 125°C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 1.65V to 5.5V - enables direct interface between 1.8V, 2.5V, 3.3V, and 5V logic domains |
| Max tpd | 3.5ns at 3.3V, CL = 15pF - supports clean signal routing up to ~100MHz digital timing |
| Output Drive | ±24mA at 3.3V - sufficient to directly drive LEDs, multiple CMOS inputs, or moderate PCB traces |
| Ioff Current | ±10μA max - prevents damaging current flow during power sequencing or board hot-swap |
| Input Voltage Tolerance | 0V to 5.5V - allows 5V signals to be safely accepted into lower-VCC systems (e.g., 3.3V or 1.8V) |
| ICC (max) | 10μA - ensures negligible static power impact in battery-powered portable devices |
| ESD Rating (HBM) | ±2kV - meets industrial-grade robustness requirements without external protection |
Pinout & Package
SN74LVC1G34DCKT uses the SC70-5 (DCK) package: 2.0mm × 2.1mm body size, 0.65mm pitch, 5-pin surface-mount configuration with exposed pad not present. Pin 1 is marked by a dot; pin numbering follows standard SC70 top-view orientation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | No internal connection (N.C.) | Unused terminal - must be left floating or tied to GND/VCC per layout best practice; no electrical function |
| 2 | Input (A) | CMOS-compatible input accepting 0–5.5V; drives internal buffer stage; requires termination if unused |
| 3 | GND | Primary ground reference for logic levels, output sinking, and thermal dissipation path |
| 4 | Output (Y) | Push-pull CMOS output delivering rail-to-rail swing (0V to VCC); capable of ±24mA drive at 3.3V |
| 5 | VCC | Power supply input; sets logic thresholds and output voltage range; requires local 0.1μF bypass capacitor |
Key Features
| Feature | Design Value |
|---|---|
| 5.5V-tolerant inputs | Enables safe interfacing of legacy 5V peripherals with modern low-voltage microcontrollers without level shifters |
| Ioff partial-power-down protection | Prevents back-current flow when VCC = 0V, supporting live insertion in modular systems and hot-swap backplanes |
| Ultra-small SC70-5 footprint | 2.0mm × 2.1mm body saves >60% board area vs. SOT-23-5, critical for space-constrained portable audio and SSD controller boards |
| Wide temperature range | Specified from –40°C to 125°C (all packages), qualifying for extended-temperature industrial and telecom applications |
| Low dynamic power | Cpd = 16pF at 3.3V enables <1mW typical active power at 10MHz, extending battery life in PDA and wireless headset use cases |
Applications
| Audio Signal Conditioning | Embedded Interface Buffering |
|---|---|
Use Scenario: Driving analog switch control lines and codec enable signals in portable MP3 players and Bluetooth headsets. IC Role / Device Role / Timing Role: Non-inverting buffer isolating MCU GPIO from capacitive loads while preserving signal integrity and timing margins. Use Value: Eliminates need for discrete FETs or larger buffers; ±24mA drive ensures fast edge rates into 50pF loads, maintaining <3.5ns propagation delay. | Use Scenario: Level-shifting UART or I²C control signals between 1.8V SoC and 3.3V peripheral ICs in SSD controller modules. IC Role / Device Role / Timing Role: Voltage-translating unidirectional buffer enabling interoperability across mixed-supply subsystems. Use Value: 5.5V-tolerant inputs accept 3.3V logic while operating at 1.8V VCC, reducing BOM count versus dedicated level translators. |
| Hot-Swappable Module Control | LED Indicator Driver |
Use Scenario: Enabling/disabling power rails or status indicators on field-replaceable compute blades in enterprise tablets and embedded PCs. IC Role / Device Role / Timing Role: Power-aware buffer providing controlled signal gating during partial power-down sequences. Use Value: Ioff functionality blocks reverse current when module VCC is off, preventing bus contention and ensuring system-level safety compliance. | Use Scenario: Directly driving status LEDs in AV receivers and Blu-ray players where MCU GPIO lacks sufficient sink/source current. IC Role / Device Role / Timing Role: High-current digital output stage replacing transistor-based LED drivers. Use Value: ±24mA output at 3.3V eliminates external transistors and base resistors, simplifying layout and improving reliability in consumer audio visual equipment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buffer gate applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74LVC1G17GW,125 (Nexperia) | Schmitt-trigger input (hysteresis), same SC70-5 package, identical VCC range and drive strength | Better noise immunity in noisy environments (e.g., motor-driven DVD recorders), but unsuitable for clean clock/data buffering | Select SN74LVC1G34DCKT when precise threshold matching and minimal propagation delay variation are required; choose 74LVC1G17GW for noisy control-line conditioning. |
| NC7SZ17P5X (ON Semiconductor) | Same non-inverting function, SC70-5, 1.65–5.5V VCC, but only ±8mA drive at 3.3V and 5.5ns max tpd | Lower drive limits suitability for LED driving or heavy capacitive loads; adequate for light-load signal isolation | Choose NC7SZ17P5X only for cost-sensitive, low-drive applications where 3.5ns timing margin is non-critical; SN74LVC1G34DCKT preferred for performance-critical paths. |
Compared with 74LVC1G17GW and NC7SZ17P5X, SN74LVC1G34DCKT uniquely balances high-speed (3.5ns), high-drive (±24mA), and Ioff-enabled hot-swap capability in the smallest SC70-5 footprint-making it optimal for portable audio, SSD, and industrial embedded signal routing where both timing fidelity and power sequencing robustness are essential.
Availability
SN74LVC1G34DCKT is available at Aetrix Electronics and suitable for portable audio, solid-state storage, and industrial embedded applications requiring stable component supply, long-term lifecycle support, and consistent parametric performance across temperature and voltage.
Supply support for SN74LVC1G34DCKT 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 logic solutions, with over 90 years of innovation in power management, signal chain, and interface technologies.
The SN74LVC1G34 belongs to TI's LVC (Low-Voltage CMOS) logic family, engineered for high-speed, low-power, mixed-voltage interfacing in space- and energy-constrained portable and industrial electronics.
FAQ
What is the maximum operating temperature for SN74LVC1G34DCKT?
The SN74LVC1G34DCKT is fully specified for operation from –40°C to 125°C across all package variants, including the DCK (SC70-5) package. This extended temperature range is validated per JEDEC JESD78 Class II latch-up testing and supports deployment in automotive-adjacent industrial environments, telecom power supplies, and high-density embedded PC designs where ambient temperatures exceed 85°C.
Does SN74LVC1G34DCKT support level translation between different supply voltages?
Yes, SN74LVC1G34DCKT supports bidirectional level translation in the sense that its inputs tolerate up to 5.5V regardless of VCC, while its outputs swing rail-to-rail (0V to VCC). For example, with VCC = 1.8V, it accepts 3.3V or 5V input signals and outputs 0–1.8V logic - enabling down-translation without external components. However, it does not perform up-translation (e.g., 1.8V input → 3.3V output) since output voltage is strictly bounded by VCC.
Can SN74LVC1G34DCKT drive an LED directly?
Yes, SN74LVC1G34DCKT can drive an LED directly: at VCC = 3.3V, it delivers up to 24mA sink or source current, sufficient for standard indicator LEDs (typically 2–20mA). The output VOH and VOL specifications ensure reliable on/off states - e.g., VOL ≤ 0.55V at IOL = 24mA guarantees strong LOW assertion. Always include a series current-limiting resistor calculated as R = (VCC − Vf_LED)/I_LED to avoid exceeding absolute max ratings.
What is the purpose of the no-connect (N.C.) pin on SN74LVC1G34DCKT?
The N.C. pin (Pin 1) on SN74LVC1G34DCKT has no internal connection and serves no electrical function. Per TI's design guidance, it may be left floating, tied to GND, or tied to VCC - none affects device operation. In high-reliability layouts, tying it to GND improves mechanical stability and reduces potential EMI coupling; however, no electrical benefit or penalty results from any choice, and no current flows through this pin under any condition.
How does Ioff functionality benefit system design with SN74LVC1G34DCKT?
Ioff functionality in SN74LVC1G34DCKT disables the output MOSFETs when VCC = 0V, limiting Ioff leakage to ±10μA. This prevents damaging back-current flow from powered sections into unpowered ones - critical for live insertion of daughterboards, modular SSDs, or hot-swappable audio docks. Unlike standard buffers, SN74LVC1G34DCKT avoids bus contention and latch-up risk during partial power-down, eliminating need for external isolation switches or complex sequencing controllers.
SN74LVC1G34DCKT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVC
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Logic Type:
- Buffer, Non-Inverting
- Number of Elements:
- 1
- 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-70-5
SN74LVC1G34DCKT FAQ
1.How can I place an order for SN74LVC1G34DCKT through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVC1G34DCKT 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 SN74LVC1G34DCKT reliable?
The price and inventory of SN74LVC1G34DCKT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVC1G34DCKT is usually 5 days.
3.What payment methods are accepted for SN74LVC1G34DCKT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LVC1G34DCKT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74LVC1G34DCKT?
SN74LVC1G34DCKT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LVC1G34DCKT 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 SN74LVC1G34DCKT?
For technical support, including SN74LVC1G34DCKT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVC1G34DCKT requirements.
6.How does Aetrix verify that SN74LVC1G34DCKT is sourced from the original manufacturer or authorized distributors?
All SN74LVC1G34DCKT 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 SN74LVC1G34DCKT meets industry standards.
7.What is the process for return or replacement of SN74LVC1G34DCKT?
All SN74LVC1G34DCKT units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVC1G34DCKT, 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 SN74LVC1G34DCKT part is unused and in its original packaging.
Return procedure for SN74LVC1G34DCKT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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