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Texas Instruments SN74LVC3G17DCUR
- Part No.:
- SN74LVC3G17DCUR
- Manufacturer:
- Texas Instruments
- Package:
- 8-VFSOP (0.091", 2.30mm Width)
- Datasheet:
-
SN74LVC3G17DCUR.pdf
- Description:
- IC BUFFER NON-INVERT 5.5V 8VSSOP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SN74LVC3G17DCUR from Texas Instruments is a triple Schmitt-trigger buffer IC operating from 1.65 V to 5.5 V, performing Y = A logic with hysteresis (ΔVT = 0.56–1.11 V), 5.4 ns max tpd at 3.3 V, ±24-mA output drive, and Ioff support for live insertion in power-gated systems. It is used in audio docks, SSDs, and portable video devices for noise-immune signal conditioning.
For engineers reviewing the SN74LVC3G17DCUR datasheet, SN74LVC3G17DCUR pinout, SN74LVC3G17DCUR application, or SN74LVC3G17DCUR equivalent, key selection criteria include Schmitt input thresholds (VT+ = 1.5–2.74 V, VT– = 0.84–2.29 V), NanoFree™ VSSOP-8 package (2.30 mm × 2.00 mm), 10-μA max ICC, and 5.5-V tolerant inputs - all critical for robust level-shifting and debouncing in battery-powered interfaces.
Technical Context
This device implements three independent noninverting buffers with Schmitt-trigger inputs, enabling clean digital signal restoration from slow or noisy waveforms. Its dual-threshold behavior (VT+ > VT–) provides noise immunity up to ΔVT, while Ioff circuitry isolates outputs during partial power-down, preventing back-current when VCC = 0 V.
The SN74LVC3G17DCUR uses CMOS technology with balanced push-pull outputs, supports 5-V-tolerant inputs regardless of VCC (1.65–5.5 V), and features latch-up resistance exceeding 100 mA per JESD 78 Class II - making it suitable for mixed-voltage interconnects in consumer and industrial embedded systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 1.65 V to 5.5 V - enables direct interface with 1.8-V, 2.5-V, 3.3-V, and 5-V logic domains without level shifters |
| Max Propagation Delay | 5.4 ns at VCC = 3.3 V, CL = 50 pF - supports high-speed signal conditioning in USB, audio, and display timing paths |
| Input Threshold Hysteresis | 0.56 V to 1.11 V - rejects noise spikes up to this amplitude on slow-rising/falling signals like mechanical switch inputs |
| Output Drive Strength | ±24 mA at VCC = 3.3 V - drives multiple LVC loads or small capacitive traces without external buffers |
| Ioff Current | ±10 μA max at VCC = 0 V - prevents backflow damage during hot-plug or partial-power-down sequences |
| Input Voltage Tolerance | Up to 5.5 V independent of VCC - allows interfacing with higher-voltage peripherals while powered from low-VCC rails |
| ICC (Quiescent) | 10 μA max - minimizes standby power in always-on subsystems such as power-button detection circuits |
Pinout & Package
VSSOP-8 (DCU) package: 2.30 mm × 2.00 mm body, 0.5-mm lead pitch, exposed pad not present, RoHS-compliant NiPdAu lead finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1A | Input 1 | Schmitt-triggered noninverting input for first buffer channel |
| 1Y | Output 1 | Noninverting buffered output corresponding to 1A |
| 2A | Input 2 | Schmitt-triggered noninverting input for second buffer channel |
| 2Y | Output 2 | Noninverting buffered output corresponding to 2A |
| 3A | Input 3 | Schmitt-triggered noninverting input for third buffer channel |
| 3Y | Output 3 | Noninverting buffered output corresponding to 3A |
| GND | Ground | Reference return path for all internal circuitry and I/O |
| VCC | Supply | Primary power rail (1.65–5.5 V); powers all three buffers and Ioff control logic |
Key Features
| Feature | Design Value |
|---|---|
| Schmitt-trigger inputs with programmable hysteresis | VT+ and VT– thresholds vary with VCC (e.g., 1.5 V / 0.84 V at 3 V), enabling reliable switching on noisy or slow analog-like signals |
| Ioff partial-power-down protection | Disables outputs and limits Ioff to ±10 μA when VCC = 0 V, allowing safe live insertion into powered-backplane systems |
| 5.5-V tolerant inputs | Accepts input voltages up to 5.5 V regardless of VCC setting - simplifies mixed-supply interfacing without external clamping diodes |
| NanoFree™ VSSOP-8 packaging | Die-as-package construction reduces footprint to 4.6 mm² - ideal for space-constrained portable electronics like wireless headsets and tablets |
| High ESD robustness | 2000-V HBM, 1000-V CDM, and 200-V MM ratings - meets stringent handling requirements for automated assembly and field-replaceable modules |
Applications
| Audio Dock Signal Conditioning | SSD Power-Button Debounce |
|---|---|
Use Scenario: Cleanly buffers and restores weak or noisy audio control signals (e.g., volume up/down, play/pause) from mechanical switches or IR receivers before routing to MCU GPIO. IC Role / Device Role / Timing Role: Triple Schmitt-trigger buffer providing noise-immune signal regeneration and level translation between 3.3-V MCU and 5-V accessory interface. Use Value: Eliminates false triggers caused by contact bounce or EMI, reducing firmware debounce overhead and improving user experience in portable audio docks. |
Use Scenario: Converts mechanical power-button press (slow, noisy edge) into a clean, glitch-free logic pulse for SSD controller reset or wake-up sequencing. IC Role / Device Role / Timing Role: Single-channel Schmitt buffer (with unused inputs tied to GND/VCC) acting as hardware-level debouncer in always-on power management circuitry. Use Value: Guarantees single, deterministic edge transition to the SSD controller - preventing spurious reboots or failed wake events under vibration or ESD stress. |
| TV Remote Receiver Interface | Wireless Keyboard Scan-Line Driver |
Use Scenario: Interfaces IR demodulator output (noisy, low-amplitude pulses) to TV SoC GPIO, rejecting ambient light interference and supply ripple. IC Role / Device Role / Timing Role: Dedicated Schmitt buffer channel converting analog-like IR signal into rail-to-rail CMOS logic compatible with HDMI CEC or system interrupt lines. Use Value: Improves remote reception reliability across lighting conditions without increasing SoC firmware complexity or requiring external RC filters. |
Use Scenario: Drives column scan lines in low-power wireless keyboard matrix, where long PCB traces introduce capacitance and crosstalk. IC Role / Device Role / Timing Role: High-drive (±24 mA) buffer amplifying MCU GPIO outputs to ensure fast, monotonic voltage transitions across 100+ pF trace loads. Use Value: Enables reliable key detection at 1-ms scan rates while maintaining <10-μA sleep current - extending coin-cell battery life beyond 12 months. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schmitt-trigger buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC1G17DCKR | Single-channel version in SC70-5 package; identical electrical specs but only one buffer per unit | Requires three units for full triple-buffer function; increases board area and BOM count | Select when design needs only one Schmitt buffer and space allows discrete placement |
| NC7SZ17P5X | Single-channel, smaller SC70-5 footprint; VT+ = 1.4 V, VT– = 0.7 V at 3.3 V; max tpd = 4.5 ns | Lacks Ioff support and 5.5-V input tolerance; unsuitable for partial-power-down or mixed-voltage domains | Prefer for cost-sensitive, single-channel, fixed 3.3-V-only applications with no hot-swap requirement |
Compared with SN74LVC1G17DCKR and NC7SZ17P5X, the SN74LVC3G17DCUR delivers integrated triple buffering in minimal area, Ioff-enabled system-level power sequencing, and universal 5.5-V input compatibility - reducing component count and enhancing robustness in portable multi-rail designs.
Availability
SN74LVC3G17DCUR is available at Aetrix Electronics and suitable for audio docks, SSD power management, and wireless peripheral interfaces requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant VSSOP packaging.
Supply support for SN74LVC3G17DCUR 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 solutions, with leadership in logic, power management, and signal chain technologies.
The SN74LVC3G17DCUR belongs to TI's LVC logic family, designed specifically for low-voltage, high-noise-immunity signal conditioning in portable and power-sensitive consumer electronics.
FAQ
What is the maximum supply voltage rating for SN74LVC3G17DCUR?
The absolute maximum VCC rating for SN74LVC3G17DCUR is 6.5 V, but recommended operation is limited to 1.65 V–5.5 V. Exceeding 5.5 V may cause parametric degradation or reliability risk, even if within absolute max limits. Always operate within the Recommended Operating Conditions table - especially for long-term stability in consumer-grade applications.
Does SN74LVC3G17DCUR support partial power-down via Ioff?
Yes, SN74LVC3G17DCUR fully supports Ioff functionality: when VCC = 0 V, outputs enter high-impedance state and Ioff current is limited to ±10 μA maximum. This prevents damaging back-current flow during live insertion or system-level power gating - a key requirement verified in TI's SCES470F datasheet Section 8.3 and Table 6.5.
What are the exact Schmitt input thresholds for SN74LVC3G17DCUR at 3.3 V VCC?
At VCC = 3.3 V and TA = 25°C, SN74LVC3G17DCUR has VT+ = 1.5 V (min) / 1.87 V (typ), VT– = 0.84 V (min) / 1.14 V (typ), yielding hysteresis ΔVT = 0.56 V (min) / 0.87 V (typ). These values are specified in Table 6.5 of the SCES470F datasheet and enable reliable switching on signals with up to ~0.8 V of superimposed noise.
Can unused inputs on SN74LVC3G17DCUR be left floating?
No - all unused inputs on SN74LVC3G17DCUR must be tied to VCC or GND. Floating inputs cause undefined output states, increased ICC, and potential oscillation due to CMOS input stage metastability. TI explicitly requires this in Section 6.3 and Application Report SCBA004 - tie unused 2A/2Y or 3A/3Y pairs to appropriate rails to ensure predictable operation.
Is SN74LVC3G17DCUR compatible with 5-V logic inputs while running at 1.8 V VCC?
Yes, SN74LVC3G17DCUR accepts input voltages up to 5.5 V regardless of VCC setting - including when VCC = 1.8 V. This 5-V-tolerant input capability is confirmed in the "Features" section and Table 6.3 of SCES470F, enabling seamless interfacing between legacy 5-V peripherals and modern low-voltage MCUs without external level shifters.
SN74LVC3G17DCUR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVC
- Package/Case:
- 8-VFSOP (0.091", 2.30mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Logic Type:
- Buffer, Non-Inverting
- Number of Elements:
- 3
- Number of Bits per Element:
- 1
- Input Type:
- Schmitt Trigger
- 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:
- 8-VSSOP
SN74LVC3G17DCUR FAQ
1.How can I place an order for SN74LVC3G17DCUR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVC3G17DCUR 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 SN74LVC3G17DCUR reliable?
The price and inventory of SN74LVC3G17DCUR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVC3G17DCUR is usually 5 days.
3.What payment methods are accepted for SN74LVC3G17DCUR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LVC3G17DCUR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74LVC3G17DCUR?
SN74LVC3G17DCUR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LVC3G17DCUR 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 SN74LVC3G17DCUR?
For technical support, including SN74LVC3G17DCUR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVC3G17DCUR requirements.
6.How does Aetrix verify that SN74LVC3G17DCUR is sourced from the original manufacturer or authorized distributors?
All SN74LVC3G17DCUR 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 SN74LVC3G17DCUR meets industry standards.
7.What is the process for return or replacement of SN74LVC3G17DCUR?
All SN74LVC3G17DCUR units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVC3G17DCUR, 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 SN74LVC3G17DCUR part is unused and in its original packaging.
Return procedure for SN74LVC3G17DCUR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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