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Texas Instruments SN74AUC1G17DCKR
- Part No.:
- SN74AUC1G17DCKR
- Manufacturer:
- Texas Instruments
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
SN74AUC1G17DCKR.pdf
- Description:
- IC BUFFER NON-INVERT 2.7V SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:13,184
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Product details
Overview
SN74AUC1G17DCKR from Texas Instruments is a single Schmitt-trigger buffer IC designed for 1.65–1.95 V operation, delivering 2.4 ns max propagation delay at 1.8 V, ±8 mA output drive, sub-1-V operability, and Ioff-enabled partial power-down protection. It serves as a noise-immune signal conditioner in high-speed low-voltage digital interfaces.
For engineers reviewing the SN74AUC1G17DCKR datasheet, SN74AUC1G17DCKR pinout, SN74AUC1G17DCKR application, or SN74AUC1G17DCKR equivalent, this page provides verified functional identity, SC70-5 package mapping, Schmitt threshold values (VT+ = 1.16 V / VT– = 0.62 V at 1.65 V), Ioff behavior, and real-world use cases in portable audio and SSD timing paths.
Technical Context
The SN74AUC1G17DCKR implements a noninverting Schmitt-trigger buffer with asymmetric input thresholds-VT+ = 1.16 V and VT– = 0.62 V at 1.65 V supply-enabling robust noise rejection on slow or noisy signals. Its logic function Y = A operates across 0.8–2.7 V VCC, but is optimized for 1.65–1.95 V.
It features Ioff circuitry that disables outputs during power-down to prevent back-drive current, supports 3.6-V I/O tolerance for mixed-mode interfacing, and achieves 10 µA max ICC at full operating range. The device uses TI's NanoFree™ packaging, where the silicon die serves as the package body.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 0.8 V to 2.7 V - supports ultra-low-voltage systems down to sub-1-V operation while maintaining full functionality |
| tpd (max) | 2.4 ns at 1.8 V, CL = 30 pF - enables timing-critical signal conditioning in high-speed serial links and clock distribution |
| Output Drive | ±8 mA at 1.65 V - sufficient to drive multiple CMOS inputs or short PCB traces without external buffering |
| VT+ / VT– | 1.16 V / 0.62 V at 1.65 V - 540 mV hysteresis ensures reliable switching on slow-rising/falling edges and EMI-prone lines |
| Ioff Support | Active at VCC = 0 V - blocks current flow between powered and unpowered domains, protecting downstream circuitry |
| ESD Rating | 2000-V HBM - meets industrial-grade handling requirements without additional board-level protection |
| ICC (max) | 10 µA over full temperature and voltage range - enables always-on monitoring circuits with negligible quiescent load |
Pinout & Package
SN74AUC1G17DCKR is packaged in a 5-pin SC70 (DCK) footprint measuring 2.00 mm × 1.25 mm with 0.65 mm pin pitch. The package is RoHS-compliant, moisture-sensitivity level 1, and rated for –40°C to +85°C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (NC) | No internal connection | Unused pad; must be left floating or grounded per layout guidelines - no electrical function |
| 2 (A) | Input | CMOS-compatible Schmitt-trigger input accepting 0–3.6 V; threshold hysteresis rejects noise up to 540 mV |
| 3 (GND) | Ground reference | Primary return path for logic and I/O currents; requires low-impedance connection to system ground plane |
| 4 (Y) | Output | Push-pull buffered output with ±8 mA drive; supports 3.6-V tolerant I/O when VCC = 1.65–1.95 V |
| 5 (VCC) | Power supply | Core supply input (0.8–2.7 V); decoupling capacitor (≥100 nF) required within 2 mm of this pin |
Key Features
| Feature | Design Value |
|---|---|
| Schmitt-trigger input | 540 mV hysteresis at 1.65 V enables reliable edge detection on slow or noisy control signals (e.g., pushbutton debouncing, sensor wake-up) |
| Ioff partial power-down | Prevents back-current flow when VCC = 0 V - critical for hot-plug interfaces and multi-rail power sequencing |
| NanoFree™ SC70 package | Die-as-package construction reduces size by >30% vs. standard SC70; 2.00 mm × 1.25 mm footprint saves PCB area in space-constrained designs |
| 3.6-V I/O tolerance | Allows direct interface with 3.3-V or 2.5-V logic without level shifters - simplifies mixed-voltage system integration |
| Sub-1-V operability | Functional at 0.8 V VCC - supports emerging ultra-low-power domains including battery-backed real-time clocks and wearables |
Applications
| Portable Audio Signal Conditioning | Solid-State Drive (SSD) Timing Interface |
|---|---|
|
Use Scenario: Level-shifting and noise filtering of I²S clock or reset signals between 1.8-V baseband processor and 3.3-V audio codec in MP3 players or wireless headsets. IC Role / Device Role / Timing Role: Noninverting Schmitt buffer providing hysteresis-based noise immunity and 3.6-V I/O tolerance for bidirectional voltage translation. Use Value: Eliminates need for discrete resistor-divider or dedicated level shifter; reduces BOM count and layout complexity while ensuring glitch-free startup. |
Use Scenario: Cleaning and retiming SATA or PCIe reference clock signals in client SSD modules where trace lengths introduce jitter and ringing. IC Role / Device Role / Timing Role: Low-skew buffer with 2.4 ns tpd and sub-1-V capability, placed near controller to regenerate clean clock edges before fanout. Use Value: Improves clock signal integrity margin by suppressing undershoot/overshoot; enables stable operation at 1.2-V or 1.8-V core voltages common in NVMe SSDs. |
| Embedded PC Power Sequencing | Tablet System Management Bus (SMBus) |
|
Use Scenario: Debouncing and latching of thermal shutdown or AC-present signals feeding into 1.8-V embedded controller GPIOs in fanless mini-PCs. IC Role / Device Role / Timing Role: Schmitt-trigger input isolates slow analog comparator outputs from fast digital logic; Ioff prevents leakage during sleep states. Use Value: Guarantees monotonic signal transitions under varying thermal conditions; eliminates false triggers caused by comparator oscillation near trip points. |
Use Scenario: Isolating and strengthening SMBus alert lines between 3.3-V PMIC and 1.8-V application processor in enterprise tablets. IC Role / Device Role / Timing Role: Bidirectional buffer enabling safe voltage translation and bus contention avoidance on open-drain SMBus lines. Use Value: Prevents bus lockup during power-state transitions; maintains signal rise/fall times within SMBus spec limits (<1000 ns) even with 20-cm trace lengths. |
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 | Higher VCC min (1.65 V), lower drive (±4 mA), no sub-1-V operation, 3.3-V I/O tolerance only | Not suitable for <1.65 V systems; less noise margin on marginal signals due to smaller hysteresis (≈300 mV) | Select when cost sensitivity outweighs sub-1-V need and system operates strictly at 1.8 V or higher |
| 74AUP1G17GW,125 | NXP part; 0.8–3.6 V VCC, 3.3 ns tpd at 1.2 V, ±4 mA drive, same SC70-5 package | Slower propagation, lower drive, but superior static current (0.9 µA typical) for battery-critical apps | Prefer for ultra-low-power always-on monitoring where speed is secondary to ICC minimization |
Compared with SN74LVC1G17DCKR and 74AUP1G17GW,125, the SN74AUC1G17DCKR uniquely combines sub-1-V operation, 2.4 ns speed at 1.8 V, and ±8 mA drive in SC70 - making it optimal for high-speed, mixed-voltage, and battery-sensitive portable designs.
Availability
SN74AUC1G17DCKR is available at Aetrix Electronics and suitable for portable audio, SSD timing, embedded PC power sequencing, and tablet SMBus isolation requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for SN74AUC1G17DCKR 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 connectivity technologies, with decades of expertise in logic, power management, and signal chain solutions.
The SN74AUC1G17DCKR belongs to TI's AUC Sub-1-V Little Logic family, engineered specifically for ultra-low-voltage, high-speed digital signal conditioning in portable and energy-constrained systems.
FAQ
What is the minimum supply voltage at which SN74AUC1G17DCKR remains fully functional?
The SN74AUC1G17DCKR is fully specified down to 0.8 V VCC and operates reliably at sub-1-V levels. At 0.8 V, it delivers defined VT+ (0.5 V), VT– (0.3 V), and tpd (5.7 ns), making it suitable for emerging ultra-low-power domains such as backup power rails and energy-harvesting subsystems. The SN74AUC1G17DCKR maintains logic integrity across its entire 0.8–2.7 V range.
Does SN74AUC1G17DCKR support hot-swap or partial power-down scenarios?
Yes, the SN74AUC1G17DCKR includes Ioff circuitry that actively disables outputs when VCC = 0 V, preventing damaging current backflow from live I/O lines into a powered-down device. This feature is validated per JEDEC JESD78 Class II latch-up testing and enables safe use in hot-plug interfaces, multi-rail power sequencing, and battery-backed systems where rails power up/down asynchronously. The SN74AUC1G17DCKR guarantees Ioff ≤ ±10 µA at 2.7 V bias.
Can SN74AUC1G17DCKR interface directly with 3.3-V logic without level shifters?
Yes, the SN74AUC1G17DCKR supports 3.6-V I/O tolerance regardless of VCC level - meaning its inputs and outputs safely accept and drive up to 3.6 V even when VCC is as low as 1.65 V. This allows direct connection to 3.3-V peripherals like audio codecs or PMICs without external level translators. The SN74AUC1G17DCKR maintains full Schmitt functionality and timing specs under these mixed-voltage conditions.
What is the hysteresis voltage (ΔVT) of SN74AUC1G17DCKR at 1.8-V supply?
At VCC = 1.8 V, the SN74AUC1G17DCKR exhibits VT+ = 1.11 V and VT– = 0.58 V, yielding a hysteresis of 530 mV. This value is measured under recommended operating conditions and ensures robust noise rejection on slow or electrically noisy signals - such as mechanical switch inputs or long PCB traces - without requiring external RC filtering. The SN74AUC1G17DCKR's hysteresis scales predictably across its operating voltage range.
Is SN74AUC1G17DCKR pin-compatible with other SC70-5 Schmitt buffers?
The SN74AUC1G17DCKR uses the standard SC70-5 pinout (Pin 1: NC, Pin 2: A, Pin 3: GND, Pin 4: Y, Pin 5: VCC), matching industry-standard footprints including SN74LVC1G17DCKR and 74AUP1G17GW. However, pin compatibility does not guarantee functional equivalence - differences in VCC range, drive strength, and hysteresis require validation in target applications. The SN74AUC1G17DCKR's NC pin must remain unconnected per TI design guidance.
SN74AUC1G17DCKR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74AUC
- 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:
- 9mA, 9mA
- Voltage - Supply:
- 0.8V ~ 2.7V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-5
SN74AUC1G17DCKR FAQ
1.How can I place an order for SN74AUC1G17DCKR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74AUC1G17DCKR 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 SN74AUC1G17DCKR reliable?
The price and inventory of SN74AUC1G17DCKR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74AUC1G17DCKR is usually 5 days.
3.What payment methods are accepted for SN74AUC1G17DCKR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74AUC1G17DCKR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74AUC1G17DCKR?
SN74AUC1G17DCKR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74AUC1G17DCKR 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 SN74AUC1G17DCKR?
For technical support, including SN74AUC1G17DCKR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74AUC1G17DCKR requirements.
6.How does Aetrix verify that SN74AUC1G17DCKR is sourced from the original manufacturer or authorized distributors?
All SN74AUC1G17DCKR 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 SN74AUC1G17DCKR meets industry standards.
7.What is the process for return or replacement of SN74AUC1G17DCKR?
All SN74AUC1G17DCKR units undergo pre-shipment inspection (PSI). If there is an issue with SN74AUC1G17DCKR, 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 SN74AUC1G17DCKR part is unused and in its original packaging.
Return procedure for SN74AUC1G17DCKR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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