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Texas Instruments SN74LVC3G17DCURG4
- Part No.:
- SN74LVC3G17DCURG4
- Manufacturer:
- Texas Instruments
- Package:
- 8-VFSOP (0.091", 2.30mm Width)
- Datasheet:
-
SN74LVC3G17DCURG4.pdf
- Description:
- IC BUFFER NON-INVERT 5.5V 8VSSOP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SN74LVC3G17DCURG4 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-enabled live insertion support. It serves signal conditioning and noise-immune level translation in portable audio and interface subsystems.
For engineers reviewing the SN74LVC3G17DCURG4 datasheet, SN74LVC3G17DCURG4 pinout, SN74LVC3G17DCURG4 application, or SN74LVC3G17DCURG4 equivalent, this page delivers verified package mapping (VSSOP-8), Schmitt threshold values (VT+ = 1.5–2.74 V, VT– = 0.84–2.29 V), Ioff behavior, propagation delay vs. VCC curves, and validated alternatives for industrial and consumer embedded designs.
Technical Context
This device implements three independent noninverting Schmitt-trigger buffers in a single VSSOP-8 package, each with asymmetric input thresholds enabling robust noise rejection on slow or noisy digital signals. Its Ioff circuitry actively disables outputs during partial power-down, blocking back-current flow when VCC = 0 V.
The SN74LVC3G17DCURG4 supports overvoltage-tolerant inputs up to 5.5 V regardless of VCC level, operates across –40°C to 125°C, and delivers rail-to-rail CMOS-compatible outputs with 10 μA max ICC and latch-up immunity exceeding 100 mA per JESD 78 Class II.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC 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 without level shifters. |
| Max Propagation Delay | 5.4 ns at VCC = 3.3 V, CL = 30/50 pF - Supports >100 MHz signal conditioning in timing-critical paths. |
| Input Hysteresis ΔVT | 0.56 V (min) to 1.11 V (max) - Rejects noise spikes up to ~1 V peak-to-peak on input lines. |
| Output Drive | ±24 mA at VCC = 3.3 V - Directly drives multiple 74LVC inputs or small capacitive loads (<30 pF) without buffering. |
| Ioff Current | ±10 μA max at VI/VO = 5.5 V, VCC = 0 V - Prevents back-powering and bus contention during hot-swap or partial shutdown. |
| ESD Rating | 2000 V HBM, 1000 V CDM - Meets industrial-grade ESD robustness requirements without external protection. |
| Operating Temperature | –40°C to +125°C - Qualified for automotive cabin, telecom, and industrial control environments. |
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 | Noninverting Schmitt-trigger input for Buffer 1; accepts 0–5.5 V regardless of VCC. |
| 1Y | Output 1 | Buffered, hysteresis-filtered replica of 1A; drives loads up to ±24 mA at 3.3 V. |
| 2A | Input 2 | Noninverting Schmitt-trigger input for Buffer 2; electrically isolated from other channels. |
| 2Y | Output 2 | Buffered, hysteresis-filtered replica of 2A; shares VCC/GND but no internal coupling. |
| 3A | Input 3 | Noninverting Schmitt-trigger input for Buffer 3; requires tie-high or tie-low if unused. |
| 3Y | Output 3 | Buffered, hysteresis-filtered replica of 3A; supports same drive and timing specs as 1Y/2Y. |
| GND | Ground | Reference return for all I/O and internal circuitry; must be low-impedance connection. |
| VCC | Power Supply | Single supply pin for all three buffers; bypass with 0.1 μF ceramic capacitor placed ≤2 mm from pin. |
Key Features
| Feature | Design Value |
|---|---|
| Schmitt-trigger inputs | VT+ = 1.5–2.74 V and VT– = 0.84–2.29 V across VCC range - enables clean edge regeneration on slow-rise signals like mechanical switch debouncing. |
| Ioff partial-power-down | Active output disable at VCC = 0 V with <10 μA leakage - eliminates back-drive risk during board-level hot-plug or power sequencing. |
| NanoFree™ packaging | VSSOP-8 footprint (2.3 × 2.0 mm) with die-as-package construction - reduces PCB area by 40% vs. standard SSOP-8 while maintaining thermal RθJA = 227°C/W. |
| Rail-to-rail CMOS outputs | VOH ≥ VCC – 0.1 V and VOL ≤ 0.1 V at light load - ensures full logic swing compatibility with downstream LVC, LV, and ALVC families. |
| Overvoltage-tolerant inputs | VI absolute max = 6.5 V, functional up to 5.5 V - allows interfacing with 5 V microcontrollers or legacy peripherals while powered from 1.8 V. |
Applications
| Audio Dock Signal Conditioning | SSD Power Sequencing Control |
|---|---|
|
Use Scenario: Clean switching of USB/3.5-mm jack detect signals in portable audio docks where mechanical switch bounce and EMI cause false triggers. IC Role / Device Role / Timing Role: Triple Schmitt-trigger buffer providing noise-immune signal regeneration for three independent detection lines (USB insert, headphone plug, mic bias enable). Use Value: Eliminates need for RC filters and software debouncing; reduces firmware interrupt load and improves user experience responsiveness. |
Use Scenario: Reliable power-on reset assertion and voltage-rail monitoring in client SSDs using 3.3 V and 1.2 V supplies. IC Role / Device Role / Timing Role: Buffers and conditions delayed power-good signals from DC/DC converters before feeding into SSD controller GPIOs. Use Value: Hysteresis prevents oscillation during supply ramp-up; Ioff prevents backfeed when SSD controller powers down before rails collapse. |
| Blu-ray Player IR Receiver Interface | Industrial Tablet Button Debounce |
|
Use Scenario: Interfacing 38 kHz modulated IR receiver outputs to Blu-ray player SoC GPIOs in high-noise living room environments. IC Role / Device Role / Timing Role: Single-channel Schmitt buffer (two channels unused, tied to VCC/GND) cleaning IR demodulator pulses before SoC sampling. Use Value: Rejects ambient light interference and EMI-induced glitches without adding propagation delay beyond 5.4 ns. |
Use Scenario: Debouncing front-panel tactile buttons in enterprise tablets subjected to vibration, ESD, and temperature cycling. IC Role / Device Role / Timing Role: Dedicated Schmitt buffer per button (all three used) converting mechanical contact closure into clean digital edges for PMIC or MCU wake-up inputs. Use Value: Guarantees single-edge assertion per press; eliminates spurious wake-ups and extends battery life via deterministic low-power entry. |
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, SC70-5 package (2.0 × 1.25 mm); identical VCC range, hysteresis, and Ioff specs. | Requires three discrete devices for triple-buffer function; higher assembly cost and PCB area than SN74LVC3G17DCURG4. | Select when board space permits modular routing or only one channel is needed per location. |
| MC74VHC1GT17DBVT1G | Single-channel, SOT-23-5; VT+ = 1.4–2.5 V, VT– = 0.7–1.7 V; no Ioff; max tpd = 7.5 ns at 3.3 V. | Lacks live-insertion support and has wider threshold tolerance; unsuitable for partial-power-down systems. | Select only for cost-sensitive, always-powered consumer applications where Ioff is unnecessary. |
Compared with SN74LVC1G17DCKR and MC74VHC1GT17DBVT1G, the SN74LVC3G17DCURG4 provides integrated triple buffering in minimal area with guaranteed Ioff behavior and tighter propagation delay-critical for synchronized multi-signal conditioning in space-constrained portable electronics.
Availability
SN74LVC3G17DCURG4 is available at Aetrix Electronics and suitable for audio docks, SSD power management, Blu-ray player IR interfaces, and industrial tablet button debounce requiring stable component supply across extended temperature and voltage ranges.
Supply support for SN74LVC3G17DCURG4 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 50 years of innovation in high-reliability interface and signal-conditioning ICs.
The SN74LVC3G17DCURG4 belongs to TI's LVC logic family, designed specifically for low-voltage, high-noise-immunity applications in portable, industrial, and consumer electronics where Schmitt-trigger functionality and power-aware operation are essential.
FAQ
What is the maximum input voltage rating for SN74LVC3G17DCURG4?
The SN74LVC3G17DCURG4 supports input voltages up to 5.5 V regardless of VCC level, with absolute maximum rating of 6.5 V. This overvoltage tolerance allows safe interfacing with 5 V peripherals while operating from 1.8 V or 2.5 V supplies, eliminating external level-shifting components in mixed-voltage systems.
Does SN74LVC3G17DCURG4 support partial power-down operation?
Yes, SN74LVC3G17DCURG4 includes Ioff circuitry that disables outputs when VCC = 0 V, limiting Ioff current to ±10 μA max. This prevents damaging back-current flow during hot-swap, board-level power sequencing, or standby modes-making it suitable for live-insertion applications such as modular docking stations.
What are the Schmitt-trigger threshold voltages for SN74LVC3G17DCURG4 at 3.3 V supply?
At VCC = 3.3 V, SN74LVC3G17DCURG4 has VT+ = 1.50–1.87 V (positive-going threshold) and VT– = 0.84–1.14 V (negative-going threshold), yielding hysteresis ΔVT = 0.56–0.87 V. These values ensure reliable noise margin against typical PCB-level interference in portable audio and interface circuits.
Can unused inputs on SN74LVC3G17DCURG4 be left floating?
No-unused inputs on SN74LVC3G17DCURG4 must be tied to VCC or GND to prevent undefined logic states and increased ICC. The datasheet explicitly requires this for proper operation; floating inputs may cause excessive current draw, oscillation, or erratic output behavior due to CMOS input stage instability.
What is the thermal resistance (RθJA) of SN74LVC3G17DCURG4 in its VSSOP-8 package?
The SN74LVC3G17DCURG4 in VSSOP-8 (DCU) package has a junction-to-ambient thermal resistance RθJA of 227°C/W under standard JEDEC test conditions. This value assumes a 1-inch² copper pad with 2 oz Cu and 2 internal layers; actual board layout significantly impacts real-world thermal performance.
SN74LVC3G17DCURG4 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:
- Discontinued at Digi-Key
- 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
SN74LVC3G17DCURG4 FAQ
1.How can I place an order for SN74LVC3G17DCURG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVC3G17DCURG4 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 SN74LVC3G17DCURG4 reliable?
The price and inventory of SN74LVC3G17DCURG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVC3G17DCURG4 is usually 5 days.
3.What payment methods are accepted for SN74LVC3G17DCURG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LVC3G17DCURG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74LVC3G17DCURG4?
SN74LVC3G17DCURG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LVC3G17DCURG4 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 SN74LVC3G17DCURG4?
For technical support, including SN74LVC3G17DCURG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVC3G17DCURG4 requirements.
6.How does Aetrix verify that SN74LVC3G17DCURG4 is sourced from the original manufacturer or authorized distributors?
All SN74LVC3G17DCURG4 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 SN74LVC3G17DCURG4 meets industry standards.
7.What is the process for return or replacement of SN74LVC3G17DCURG4?
All SN74LVC3G17DCURG4 units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVC3G17DCURG4, 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 SN74LVC3G17DCURG4 part is unused and in its original packaging.
Return procedure for SN74LVC3G17DCURG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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