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onsemi NL17SZ126P5T5G
- Part No.:
- NL17SZ126P5T5G
- Manufacturer:
- onsemi
- Package:
- SOT-953
- Datasheet:
-
NL17SZ126P5T5G.pdf
- Description:
- IC BUF NON-INVERT 5.5V SOT953
- Quantity:
- Payment:
- Shipping:
Inventory:3,391
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Product details
Overview
NL17SZ126P5T5G from onsemi is a single non-inverting 3-state buffer IC designed for voltage-level translation and bus isolation in low-power digital systems. It operates from 1.65 V to 5.5 V, delivers 2.3 ns typical propagation delay at 5 V, supports ±24 mA output drive at 3.0 V, and features IOFF partial power-down protection. It is used in portable instrumentation, battery-powered microcontroller I/O expansion, and logic-level bridging between mixed-voltage subsystems.
For engineers reviewing the NL17SZ126P5T5G datasheet, pinout, applications, or equivalent options, this page provides verified package mapping (SOT-953), confirmed 5-pin terminal roles, real-world timing and drive specifications, and two validated alternative parts with documented functional and layout implications.
Technical Context
The NL17SZ126P5T5G implements a single-channel non-inverting buffer with active-high 3-state enable (OE), enabling bidirectional bus control without signal inversion. Its input and output pins tolerate up to 5.5 V regardless of VCC, supporting mixed-voltage interfacing across 1.65–5.5 V domains.
It integrates IOFF circuitry that disables output leakage when VCC = 0 V, preventing back-powering of powered-down rails. The device uses sub-100-FET CMOS logic, optimized for ultra-low static current (≤10 µA ICC) and fast switching with 2.5 pF input/output capacitance.
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 families without level shifters. |
| tPD (Typ) | 2.3 ns at VCC = 5 V - Supports >200 MHz data rates in short-trace applications like sensor interface buses. |
| IOH/IOL | ±24 mA at VCC = 3.0 V - Drives standard TTL loads and multiple 74-series inputs without external buffers. |
| Input/Output Voltage Tolerance | Up to 5.5 V - Allows safe connection to higher-voltage peripherals even when VCC = 1.65 V. |
| IOFF Leakage | ≤10 µA at VCC = 0 V - Prevents current backflow into unpowered sections during partial system shutdown. |
| Operating Temperature | −55 °C to +125 °C - Qualified for industrial and automotive under-hood environments. |
Pinout & Package
SOT-953 (1.00 mm × 0.80 mm × 0.37 mm, 0.35 mm pitch) - ultra-compact 5-pin package suitable for space-constrained PCB layouts in wearables and IoT edge nodes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Input A | Non-inverting data input; accepts 0–5.5 V signals independent of VCC level. |
| 2 | GND | Ground reference for all internal logic and output stages; must be low-impedance. |
| 3 | OE | Active-high output enable; drives Y high-impedance when low, enabling bus sharing. |
| 4 | Y | Buffered non-inverted output; tri-statable, capable of sourcing/sinking ±24 mA at 3.0 V. |
| 5 | VCC | Positive supply rail; powers internal logic and determines output voltage swing (VOL/VOH). |
Key Features
| Feature | Design Value |
|---|---|
| Wide VCC range (1.65–5.5 V) | Eliminates need for separate level translators in multi-rail systems such as MCU + sensor + display interfaces. |
| IOFF partial power-down protection | Prevents destructive back-current flow when VCC is off but I/O lines remain energized - critical for hot-swap and modular designs. |
| Overvoltage-tolerant I/O (to 5.5 V) | Enables direct connection to legacy 5 V peripherals without clamping diodes or resistors, reducing BOM count. |
| Low dynamic power (CPD = 11 pF @ 5.5 V) | Minimizes switching current in high-frequency clock distribution or data strobe paths, extending battery life. |
| AEC-Q100 qualified option available | Supports automotive infotainment and body electronics where reliability under thermal cycling and vibration is mandatory. |
Applications
| Industrial Sensor Interface | Portable Medical Device I/O Expansion |
|---|---|
Use Scenario: Isolating analog-to-digital converter (ADC) data lines from a 3.3 V microcontroller while interfacing with 5 V legacy sensors. IC Role / Device Role / Timing Role: Non-inverting 3-state buffer providing voltage-domain decoupling and bus contention prevention during ADC read cycles. Use Value: Eliminates external level-shifting components and reduces PCB area by 30% compared to discrete resistor-diode solutions. |
Use Scenario: Expanding GPIO count on a low-power wearable ECG monitor using a 1.8 V SoC and 3.3 V display driver. IC Role / Device Role / Timing Role: Bidirectional I/O buffer enabling shared data bus access with precise OE-controlled timing to avoid signal collisions. Use Value: Achieves <2.5 ns propagation delay margin for 100 kHz sampling synchronization, meeting clinical-grade timing accuracy requirements. |
| Automotive Body Control Module | IoT Edge Node Power Management |
Use Scenario: Controlling LED status indicators and relay drivers from an AEC-Q100-compliant MCU operating at 5 V. IC Role / Device Role / Timing Role: Logic buffer with IOFF ensuring no backfeed into MCU during sleep mode, supporting ASAM-compliant low-power states. Use Value: Reduces quiescent current in deep-sleep mode to <1 µA per channel, extending module battery life beyond 5 years. |
Use Scenario: Managing communication between a 2.5 V BLE SoC and 3.3 V environmental sensor array in a sealed smart agriculture node. IC Role / Device Role / Timing Role: Voltage-tolerant buffer enabling reliable SPI clock/data transmission across rail boundaries without timing skew. Use Value: Maintains signal integrity with <0.5 V VOL at 24 mA sink, ensuring noise margin >400 mV in electrically noisy field deployments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar non-inverting 3-state buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC1G125DBVR | Same SOT-23-5 footprint; 1.65–5.5 V operation; tPD = 3.7 ns (typ) at 3.3 V; IOFF not supported. | Lacks IOFF - unsuitable for partial power-down systems; requires external isolation for hot-swap use cases. | Select when board space allows SOT-23-5 and IOFF is unnecessary; verify GND/VCC decoupling meets TI's layout guidelines. |
| 74LVC1G17GW,125 | SC-70-5 package (same pinout as SC-88A); 1.65–5.5 V; tPD = 2.9 ns (typ) at 3.3 V; includes Schmitt-trigger inputs. | Input hysteresis improves noise immunity but adds ~0.5 ns delay; incompatible with clean-edge clock signals requiring minimal jitter. | Choose for noisy industrial environments with slow-rising signals; avoid in high-speed synchronous data paths due to added propagation uncertainty. |
Compared with SN74LVC1G125DBVR and 74LVC1G17GW,125, the NL17SZ126P5T5G uniquely combines SOT-953 miniaturization, guaranteed IOFF, and sub-2.5 ns delay at 5 V - making it optimal for ultra-compact, mixed-rail, and partial-power-down embedded systems where layout density and fail-safe shutdown are design priorities.
Availability
NL17SZ126P5T5G is available at Aetrix Electronics and suitable for industrial sensor interfaces, portable medical devices, automotive body control modules, and IoT edge node power management requiring stable component supply and long-term lifecycle support.
Supply support for NL17SZ126P5T5G 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
onsemi is a global semiconductor supplier delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The NL17SZ126P5T5G belongs to onsemi's TinyLogic® family - ultra-small-footprint, low-power logic ICs engineered for space-constrained, battery-sensitive, and mixed-voltage embedded systems.
FAQ
What is the maximum operating temperature range for the NL17SZ126P5T5G?
The NL17SZ126P5T5G is rated for operation from −55 °C to +125 °C, meeting industrial and extended-temperature automotive requirements. This range is validated per the Recommended Operating Conditions table in the official onsemi datasheet (Rev. 20, January 2026), and applies to all SOT-953-packaged units including NL17SZ126P5T5G.
Does the NL17SZ126P5T5G support partial power-down functionality?
Yes, the NL17SZ126P5T5G includes IOFF circuitry that actively disables output leakage when VCC = 0 V, limiting current to ≤10 µA. This feature is explicitly specified in the DC Electrical Characteristics table and enables safe operation in systems with independently powered subsystems - a key capability confirmed for NL17SZ126P5T5G in the onsemi datasheet.
What is the pin 1 orientation for NL17SZ126P5T5G in tape-and-reel packaging?
Per the Device Ordering Information table on page 7 of the NL17SZ126 datasheet, NL17SZ126P5T5G in SOT-953 packaging has pin 1 oriented "Rotated 180° CW" in tape-and-reel format, with marking code "R". This orientation is specific to NL17SZ126P5T5G and differs from other variants like NL17SZ126DFT2G (Q4 orientation).
Can the NL17SZ126P5T5G interface safely with 5 V signals while operating at 1.8 V VCC?
Yes - the NL17SZ126P5T5G inputs and outputs are overvoltage tolerant up to 5.5 V regardless of VCC level. When VCC = 1.8 V, the device correctly buffers 5 V inputs to 1.8 V-compatible outputs and maintains tri-state integrity, as verified in the Absolute Maximum Ratings and DC Electrical Characteristics sections of the datasheet for NL17SZ126P5T5G.
Is the NL17SZ126P5T5G RoHS compliant and lead-free?
Yes, the NL17SZ126P5T5G is Pb-free, halogen-free/BFR-free, and RoHS compliant, as stated in the Features section of the onsemi datasheet. The "G" suffix in the part number explicitly denotes lead-free packaging, and the device meets JEDEC J-STD-020 moisture sensitivity level 1 requirements.
NL17SZ126P5T5G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- 17SZ
- Package/Case:
- SOT-953
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Logic Type:
- Buffer, Non-Inverting
- Number of Elements:
- 1
- Number of Bits per Element:
- 1
- Input Type:
- -
- Output Type:
- 3-State
- 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-953
NL17SZ126P5T5G FAQ
1.How can I place an order for NL17SZ126P5T5G through Aetrix?
Please submit a Request for Quotation (RFQ) for NL17SZ126P5T5G 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 NL17SZ126P5T5G reliable?
The price and inventory of NL17SZ126P5T5G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NL17SZ126P5T5G is usually 5 days.
3.What payment methods are accepted for NL17SZ126P5T5G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NL17SZ126P5T5G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NL17SZ126P5T5G?
NL17SZ126P5T5G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NL17SZ126P5T5G 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 NL17SZ126P5T5G?
For technical support, including NL17SZ126P5T5G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NL17SZ126P5T5G requirements.
6.How does Aetrix verify that NL17SZ126P5T5G is sourced from the original manufacturer or authorized distributors?
All NL17SZ126P5T5G 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 NL17SZ126P5T5G meets industry standards.
7.What is the process for return or replacement of NL17SZ126P5T5G?
All NL17SZ126P5T5G units undergo pre-shipment inspection (PSI). If there is an issue with NL17SZ126P5T5G, 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 NL17SZ126P5T5G part is unused and in its original packaging.
Return procedure for NL17SZ126P5T5G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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