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Texas Instruments SN74LVC1G34DBVRE4
- Part No.:
- SN74LVC1G34DBVRE4
- Manufacturer:
- Texas Instruments
- Package:
- SC-74A, SOT-753
- Datasheet:
-
SN74LVC1G34DBVRE4.pdf
- Description:
- IC BUF NON-INVERT 5.5V SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:841
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Product details
Overview
SN74LVC1G34 from Texas Instruments is a single non-inverting CMOS buffer gate designed for 1.65V–5.5V operation, delivering ±24mA output drive at 3.3V, 3.5ns max propagation delay (tpd), and Ioff-enabled live insertion support - used in signal buffering, level translation, and LED driving in portable audio and embedded interfaces.
For engineers reviewing the SN74LVC1G34 datasheet, SN74LVC1G34 pinout, SN74LVC1G34 application, or SN74LVC1G34 equivalent, key selection criteria include VCC range compatibility (1.65–5.5V), input tolerance to 5.5V, Ioff for partial-power-down systems, low ICC (≤1μA), and SOT-23-5 (DBV) package suitability for space-constrained PCB layouts.
Technical Context
The SN74LVC1G34 implements the Boolean function Y = A in positive logic with no inversion, operating across a wide VCC range while maintaining rail-to-rail output swing and input voltage tolerance beyond VCC (up to 5.5V). Its Ioff circuitry actively disables outputs during power-down, preventing back-drive current and enabling hot-plug capability.
It supports down-translation: inputs accept 5.5V signals while powered from as low as 1.65V, and outputs swing between GND and VCC. The device exhibits consistent switching performance across –40°C to 125°C (depending on package), with tpd as low as 1ns at 5V and CL = 15pF.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 1.65V to 5.5V - enables direct interface with 1.8V, 2.5V, 3.3V, and 5V logic domains without external level shifters. |
| Max tpd | 3.5ns at 3.3V, CL = 15pF - supports clean signal integrity up to ~100MHz digital timing paths. |
| Output Drive | ±24mA at 3.3V - sufficient to directly drive LEDs, multiple CMOS inputs, or moderate capacitive loads (≤50pF). |
| Ioff Current | ±10μA max - ensures isolation during partial power-down, protecting powered subsystems from back-current. |
| Input Voltage Range | –0.5V to 5.5V - allows 5V-tolerant inputs even when VCC = 1.65V, simplifying mixed-voltage system design. |
| ICC (Static) | 1μA max - minimizes quiescent power in battery-powered or always-on subsystems. |
| ESD Rating (HBM) | ±2kV - meets industrial-grade robustness requirements per JESD22-A114. |
Pinout & Package
SOT-23-5 (DBV) package: 2.90mm × 2.80mm body, 5-pin surface-mount, lead-free and RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | No-connect (N.C.) | Internally unconnected; must be left floating or tied to GND/VCC only if required by layout - no electrical function. |
| 2 | Input (A) | Single logic input accepting 0–5.5V; compatible with 1.65V–5.5V VCC and tolerant of overvoltage conditions. |
| 3 | GND | Reference ground for all internal circuitry and output sink path; must be low-impedance for stable VOL and EMI control. |
| 4 | Output (Y) | Non-inverting buffered output; drives loads up to ±24mA at 3.3V with rail-to-rail swing (0V to VCC). |
| 5 | VCC | Positive supply pin; powers internal logic and defines output high-level voltage; bypass capacitor (0.1μF) required adjacent to pin. |
Key Features
| Feature | Design Value |
|---|---|
| 5.5V-tolerant inputs | Enables interfacing with legacy 5V peripherals while operating from 1.8V/2.5V/3.3V rails - eliminates need for discrete level translators. |
| Ioff partial-power-down protection | Prevents damaging current flow between powered and unpowered sections during hot-swap or sleep-mode transitions. |
| Ultra-low ICC (≤1μA) | Reduces standby power in always-on nodes such as USB enumeration circuits, wake-on-event logic, or sensor interface buffers. |
| High-output drive (±24mA @ 3.3V) | Supports direct LED anode/cathode driving, fan-out to ≥10 standard CMOS loads, or termination of short PCB traces without external drivers. |
| Wide temperature range (–40°C to 125°C) | Validated for automotive under-hood, industrial control, and telecom infrastructure applications where ambient thermal stress exceeds consumer limits. |
Applications
| Portable Audio Signal Routing | Embedded PC I/O Buffering |
|---|---|
Use Scenario: Isolating and strengthening I²S clock/data lines between codec and SoC in MP3 players or wireless headsets. IC Role / Device Role: Non-inverting buffer providing noise-immune signal integrity and 5.5V-tolerant input for mixed-supply interconnects. Use Value: Eliminates signal degradation over 5–10cm PCB traces while supporting 1.8V SoC and 3.3V codec domains without level-shifter ICs. |
Use Scenario: Driving reset, interrupt, or GPIO expansion signals in compact embedded PCs with multi-rail power architecture. IC Role / Device Role: Single-gate buffer ensuring reliable edge timing and load-driving capability across voltage islands. Use Value: Delivers <3.5ns tpd and ±24mA drive to meet setup/hold margins for FPGA or microcontroller peripherals at 50+ MHz. |
| Solid State Drive (SSD) Power Sequencing | TV & HDTV Control Interface |
Use Scenario: Enabling/disabling 12V or 5V DC/DC enable lines based on low-voltage controller outputs in client SSDs. IC Role / Device Role: Level-translating buffer translating 1.8V enable signals to higher-voltage power controller inputs. Use Value: Leverages 5.5V input tolerance and Ioff to safely isolate sequenced power domains during cold-boot or firmware update cycles. |
Use Scenario: Buffering remote-control IR receiver outputs or HDMI CEC signals in LCD/HDTV mainboards. IC Role / Device Role: Low-capacitance (3.5pF Ci), fast-response buffer preserving signal rise/fall times in noisy TV chassis environments. Use Value: Maintains <10ns transition fidelity at 3.3V while rejecting board-level noise via tight VCC/GND decoupling and Ioff isolation. |
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 1.65–5.5V VCC, ±24mA drive, but higher input threshold and noise immunity. | Better suited for slow/noisy signals (e.g., mechanical switch debouncing, analog comparator outputs); not ideal for clean digital clocks. | Select SN74LVC1G34 for precise timing-critical buffering; choose 74LVC1G17GW when input signal edges are slow or noisy. |
| NC7SZ17P5X (ON Semiconductor) |
Same non-inverting function, 1.65–5.5V VCC, ±24mA drive, but SC70-5 (DCK) package only; slightly higher tpd (4.5ns typ at 3.3V). | Compatible footprint for space-constrained designs using SC70; identical functional behavior but different thermal resistance (RθJA = 371°C/W vs DBV's 357°C/W). | Use NC7SZ17P5X only if SC70-5 is mandated; SN74LVC1G34 DBV offers better thermal performance and broader package availability. |
Compared with 74LVC1G17GW and NC7SZ17P5X, the SN74LVC1G34 DBV provides the lowest propagation delay (3.5ns max), widest package selection (including SOT-23-5), and TI's validated Ioff implementation - making it optimal for high-speed, mixed-voltage, and hot-swap-sensitive designs.
Availability
SN74LVC1G34 is available at Aetrix Electronics and suitable for portable audio, embedded PC I/O, and SSD power sequencing requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant sourcing.
Supply support for SN74LVC1G34 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 decades of expertise in high-reliability, low-power logic families.
The SN74LVC1G34 belongs to TI's LVC (Low-Voltage CMOS) logic family, engineered for broad VCC compatibility, high noise immunity, and seamless integration into mixed-voltage digital systems from portable to industrial applications.
FAQ
What is the maximum operating temperature for SN74LVC1G34 in the DBV (SOT-23-5) package?
The SN74LVC1G34 in DBV package is rated for operation from –40°C to 125°C ambient temperature. This extended range is validated per JEDEC JESD78 latch-up testing and thermal characterization data, making SN74LVC1G34 suitable for under-hood automotive modules and industrial controllers where thermal stress exceeds commercial limits.
Does SN74LVC1G34 support level translation between 1.8V and 5V logic domains?
Yes - SN74LVC1G34 supports true bidirectional level translation: its inputs tolerate up to 5.5V regardless of VCC (as low as 1.65V), and its outputs swing rail-to-rail (0V to VCC). When powered from 1.8V, SN74LVC1G34 accepts 5V inputs and outputs 0–1.8V, enabling safe interfacing between 5V sensors and 1.8V processors without external translators.
Can SN74LVC1G34 drive an LED directly, and what current can it source/sink?
Yes - SN74LVC1G34 can directly drive LEDs: it delivers ±24mA output current at 3.3V (per Electrical Characteristics table), allowing anode or cathode connection. At 1.8V, it sources/sinks ≥4mA; at 5V, ≥32mA. Always verify VOL/VOH margins and use series resistors to limit current within absolute max ratings (±50mA continuous).
Is the NC (pin 1) on SN74LVC1G34 DBV package required to be grounded or left floating?
Pin 1 (N.C.) on the SN74LVC1G34 DBV package has no internal connection and may be left floating. TI's datasheet explicitly states "Not connected" - grounding or tying to VCC is unnecessary and provides no benefit. PCB layout should avoid routing signals near this pin to prevent parasitic coupling.
How does Ioff functionality work in SN74LVC1G34, and when is it active?
Ioff in SN74LVC1G34 disables output drivers when VCC = 0V or is ramping, limiting Ioff leakage to ±10μA. It activates automatically during power-down, hot-swap, or partial-power modes - preventing back-current from powered downstream circuits into the unpowered SN74LVC1G34. This protects both SN74LVC1G34 and connected devices without external circuitry.
SN74LVC1G34DBVRE4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVC
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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:
- SOT-23-5
SN74LVC1G34DBVRE4 FAQ
1.How can I place an order for SN74LVC1G34DBVRE4 through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVC1G34DBVRE4 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 SN74LVC1G34DBVRE4 reliable?
The price and inventory of SN74LVC1G34DBVRE4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVC1G34DBVRE4 is usually 5 days.
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Once your SN74LVC1G34DBVRE4 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 SN74LVC1G34DBVRE4?
For technical support, including SN74LVC1G34DBVRE4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVC1G34DBVRE4 requirements.
6.How does Aetrix verify that SN74LVC1G34DBVRE4 is sourced from the original manufacturer or authorized distributors?
All SN74LVC1G34DBVRE4 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 SN74LVC1G34DBVRE4 meets industry standards.
7.What is the process for return or replacement of SN74LVC1G34DBVRE4?
All SN74LVC1G34DBVRE4 units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVC1G34DBVRE4, 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 SN74LVC1G34DBVRE4 part is unused and in its original packaging.
Return procedure for SN74LVC1G34DBVRE4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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