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Diodes Incorporated 74LVC1G17QSE-7
- Part No.:
- 74LVC1G17QSE-7
- Manufacturer:
- Diodes Incorporated
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
74LVC1G17QSE-7.pdf
- Description:
- IC BUFFER NON-INVERT 5.5V SOT353
- Quantity:
- Payment:
- Shipping:
Inventory:9,738
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Product details
Overview
74LVC1G17QSE-7 from Diodes Incorporated is an automotive-grade single Schmitt trigger buffer in SOT353 package, operating from 1.65V to 5.5V supply, with 5.5V-tolerant inputs, ±24mA output drive at 3.3V, and IOFF-enabled partial power-down protection. It functions as a noise-immune signal conditioner in voltage-level shifting and power-down isolation circuits for automotive control modules.
For engineers reviewing the 74LVC1G17QSE-7 datasheet, 74LVC1G17QSE-7 pinout, 74LVC1G17QSE-7 application, or 74LVC1G17QSE-7 equivalent, key selection criteria include Schmitt hysteresis (min 0.37V at 1.65V), Grade 1 temperature range (–40°C to +125°C), AEC-Q100 qualification, IOFF leakage (±2μA), and SOT353 thermal resistance (θJA = 385°C/W).
Technical Context
This device implements a non-inverting Schmitt trigger logic function (A = Y) with asymmetric input thresholds-VT+ ranges from 0.79V to 3.33V and VT− from 0.39V to 2.29V across 1.65–5.5V VCC, delivering 0.37–1.11V hysteresis. Its IOFF circuit actively disables outputs during power-down, blocking reverse current flow when VCC = 0V.
Designed for mixed-voltage system interfacing, it accepts 5.5V inputs regardless of VCC level and delivers rail-to-rail CMOS-compatible outputs. Propagation delay is 0.7–14.0ns depending on VCC and temperature, with typical tPD = 3.0ns at 3.3V/25°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.65V to 5.5V - supports direct interface with 1.8V, 2.5V, 3.3V, and 5V logic domains |
| Input Voltage Tolerance | Up to 5.5V - enables safe connection to higher-voltage buses without level-shifting components |
| Output Drive Strength | ±24mA at VCC = 3.3V - sufficient to drive multiple LVC loads or moderate capacitive loads |
| Hysteresis (ΔVT) | Min 0.37V at 1.65V - provides robust noise immunity against slow or noisy input edges |
| IOFF Leakage Current | ±2μA max - prevents backfeed current during partial power-down, protecting powered-down subsystems |
| Operating Temperature | –40°C to +125°C - qualified for under-hood automotive applications per AEC-Q100 Grade 1 |
| Propagation Delay | 0.7ns (min) to 7.0ns (max) at 3.3V - ensures timing predictability in high-speed digital control paths |
Pinout & Package
SOT353 (2.15mm × 2.1mm × 1.1mm, 0.65mm pitch) 5-pin package with exposed pad not connected internally. Pin 1 = A (input), Pin 2 = GND, Pin 3 = Y (output), Pin 4 = VCC, Pin 5 = NC (no internal connection).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (A) | Data Input | Schmitt-triggered input accepting 0–5.5V; threshold hysteresis enables clean switching on slow/noisy signals |
| 2 (GND) | Ground Reference | Return path for all internal logic and output current; must be low-impedance for stable noise immunity |
| 3 (Y) | Data Output | Push-pull CMOS output driving high/low to VCC/GND; supports bus hold and fanout up to 10 LVC loads |
| 4 (VCC) | Power Supply | Primary supply rail; IOFF circuit monitors this pin to disable outputs during power loss or brownout |
| 5 (NC) | No Connection | Internally unconnected; PCB pad may be left floating or tied to GND for mechanical stability only |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 Qualification | Validated for automotive use from –40°C to +125°C ambient, including PPAP capability and IATF 16949 manufacturing |
| 5.5V-Tolerant Inputs | Allows direct connection to legacy 5V buses while powered from 1.8V or 2.5V rails-eliminates external level shifters |
| IOFF Partial Power-Down | Automatically disables output drivers when VCC = 0V, preventing damaging back-current into powered-down sections |
| ESD Robustness | 2000V HBM and 1000V CDM per AEC-Q100-ensures reliability during handling and in-circuit operation |
| Low Dynamic Power | Typical 4μA ICC at 3.3V - reduces quiescent power in always-on vehicle subsystems like body control modules |
Applications
| Automotive Body Control Module | Industrial Sensor Interface |
|---|---|
Use Scenario: Conditioning noisy switch inputs (e.g., door latch, hood open) in battery-powered BCMs with mixed 3.3V/5V sensor interfaces. IC Role / Device Role / Timing Role: Schmitt trigger buffer providing hysteresis-based debouncing and voltage translation between 5V reed switches and 3.3V microcontroller GPIO. Use Value: Eliminates external RC filters and discrete transistors; IOFF prevents backfeed when BCM enters sleep mode with VCC off. | Use Scenario: Interfacing slow-rising analog sensor outputs (e.g., thermistor-based temp sensors) to digital comparators in factory automation PLCs. IC Role / Device Role / Timing Role: Signal conditioner converting marginal analog thresholds into clean digital logic levels with noise margin. Use Value: Delivers consistent switching points across –40°C to +125°C, enabling reliable detection without software calibration. |
| Automotive Infotainment Power Sequencing | Medical Diagnostic Equipment Logic Isolation |
Use Scenario: Isolating reset or enable signals between powered-down display controllers and active main SoC in infotainment head units. IC Role / Device Role / Timing Role: Bidirectional isolation gate using IOFF to block signal coupling during partial power-down sequences. Use Value: Prevents unintended wake-up or latch-up during multi-rail power sequencing-meets ISO 16750-2 transient immunity requirements. | Use Scenario: Level-shifting and noise filtering for patient-monitoring front-end signals routed to isolated MCU domains. IC Role / Device Role / Timing Role: Input buffer ensuring ESD-safe, glitch-free signal transfer across galvanically isolated boundaries. Use Value: 2000V HBM rating and <1000ppm antimony/halogen content support IEC 60601-1 compliance for Class II medical devices. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schmitt trigger buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC1G17DBVR | Same logic function and electrical specs, but rated only to +85°C and not AEC-Q100 qualified; SOT-23-5 package (larger footprint, θJA = 216°C/W) | Not suitable for under-hood automotive use; acceptable for industrial controls with lower ambient temps | Select when cost sensitivity outweighs automotive qualification and thermal performance needs |
| NXP 74LVC1G17GV | Identical Grade 1 temperature range and AEC-Q100 qualification, but uses SOT-753 (same pinout as SOT353); slightly higher max ICC (6μA vs 4μA) | Drop-in replacement in layout; identical thermal profile and IOFF behavior | Prefer when dual-sourcing is required or NXP supply chain preference applies |
Compared with SN74LVC1G17DBVR and NXP 74LVC1G17GV, the 74LVC1G17QSE-7 offers superior thermal resistance (385°C/W), lowest quiescent current (4μA), and Diodes Incorporated's IATF 16949-certified production-making it optimal for space-constrained, thermally demanding automotive modules.
Availability
74LVC1G17QSE-7 is available at Aetrix Electronics and suitable for automotive body control, industrial sensor conditioning, and medical diagnostic equipment requiring stable component supply across extended temperature and long product lifecycles.
Supply support for 74LVC1G17QSE-7 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability solutions for automotive, industrial, and computing markets.
The 74LVC logic family targets low-voltage, mixed-supply digital interfacing with AEC-Q100 qualification-designed specifically for robust signal integrity in automotive ECUs and industrial control systems.
FAQ
What is the purpose of the NC pin on the 74LVC1G17QSE-7?
Pin 5 is designated NC (No Connection) and has no internal bond wire or circuit connection. It may be left unconnected on the PCB or tied to GND solely for mechanical reinforcement-doing so does not affect electrical performance or reliability.
Can the 74LVC1G17QSE-7 operate with a 1.5V supply?
No-the absolute minimum recommended operating voltage is 1.65V per the datasheet's Recommended Operating Conditions table. At 1.5V, the device may fail to meet specified propagation delay, output drive, or Schmitt threshold performance, and is outside AEC-Q100 qualification limits.
How does IOFF protect downstream circuitry during power-down?
When VCC drops below ~0.2V, the IOFF circuit activates and places the output (Y) in a high-impedance state with ±2μA leakage maximum-blocking reverse current flow from powered sections into the unpowered IC, preventing latch-up or damage to adjacent powered ICs.
Is the 74LVC1G17QSE-7 compatible with 5V TTL logic inputs?
Yes-the inputs tolerate up to 5.5V regardless of VCC level, making it fully compatible with 5V TTL output voltages. When VCC = 3.3V, the Schmitt thresholds (VT+ ≈ 1.50–1.87V, VT− ≈ 0.84–1.16V) ensure clean recognition of TTL logic-high (≥2.0V) and logic-low (≤0.8V) signals.
74LVC1G17QSE-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- 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:
- 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:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-353
74LVC1G17QSE-7 FAQ
1.How can I place an order for 74LVC1G17QSE-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVC1G17QSE-7 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 74LVC1G17QSE-7 reliable?
The price and inventory of 74LVC1G17QSE-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVC1G17QSE-7 is usually 5 days.
3.What payment methods are accepted for 74LVC1G17QSE-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVC1G17QSE-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LVC1G17QSE-7?
74LVC1G17QSE-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVC1G17QSE-7 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 74LVC1G17QSE-7?
For technical support, including 74LVC1G17QSE-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVC1G17QSE-7 requirements.
6.How does Aetrix verify that 74LVC1G17QSE-7 is sourced from the original manufacturer or authorized distributors?
All 74LVC1G17QSE-7 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 74LVC1G17QSE-7 meets industry standards.
7.What is the process for return or replacement of 74LVC1G17QSE-7?
All 74LVC1G17QSE-7 units undergo pre-shipment inspection (PSI). If there is an issue with 74LVC1G17QSE-7, 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 74LVC1G17QSE-7 part is unused and in its original packaging.
Return procedure for 74LVC1G17QSE-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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