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onsemi NL17SZ126DBVT1G
- Part No.:
- NL17SZ126DBVT1G
- Manufacturer:
- onsemi
- Package:
- SC-74A, SOT-753
- Datasheet:
-
NL17SZ126DBVT1G.pdf
- Description:
- IC BUFFER NON-INVERT 5.5V SC74A
- Quantity:
- Payment:
- Shipping:
Inventory:1,553
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Product details
Overview
NL17SZ126DBVT1G from onsemi is a single non-inverting 3-state buffer IC designed for level translation and bus isolation in low-voltage digital systems. It operates from 1.65 V to 5.5 V, delivers 2.3 ns propagation delay at 5 V, supports ±24 mA output drive at 3.0 V, tolerates inputs/outputs up to 5.5 V independent of VCC, and features IOFF partial power-down protection. It is used in portable instrumentation I/O expansion interfaces.
For engineers reviewing the NL17SZ126DBVT1G datasheet, pinout, applications, or equivalent options, key selection criteria include supply voltage range compatibility, tri-state enable timing (tPZH/tPHZ), output drive strength at target VCC, overvoltage tolerance, and SC-74A-5 package footprint constraints.
Technical Context
The NL17SZ126DBVT1G implements a single-channel non-inverting buffer with active-high 3-state enable (OE). Its logic function is defined by a truth table where output Y follows input A when OE = HIGH, and enters high-impedance state when OE = LOW - no inversion or latching occurs. The device uses CMOS technology with <100 FETs complexity.
It supports mixed-voltage interfacing due to overvoltage-tolerant inputs/outputs (up to 5.5 V) and wide VCC range (1.65–5.5 V), enabling use between 1.8 V, 2.5 V, 3.3 V, and 5 V domains. IOFF functionality prevents current backflow during partial power-down, critical for system-level power sequencing integrity.
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. |
| tPLH / tPHL | 2.0 ns (typ) at VCC = 5 V, CL = 15 pF - ensures sub-2.5 ns signal path delay for high-speed data routing in compact PCB layouts. |
| IOH / IOL | ±24 mA at VCC = 3.0 V - provides sufficient drive strength to fan out to multiple CMOS loads or drive moderate capacitive traces. |
| Input/Output Voltage Tolerance | Up to 5.5 V regardless of VCC - allows safe connection to higher-voltage buses while powered from lower supply rails. |
| IOFF Leakage | ≤10 µA at VCC = 0 V - guarantees minimal leakage current during system sleep or partial shutdown modes. |
| Operating Temperature | −55 °C to +125 °C - supports deployment in industrial, automotive under-hood, and extended-temperature embedded control applications. |
Pinout & Package
Package: SC-74A-5 (Case 318BQ), 3.00 mm × 1.50 mm × 0.95 mm body, 0.95 mm pitch, surface-mount, Pb-free/RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OE) | Output Enable Input | Active-HIGH control: drives Y to A when HIGH; places Y in high-Z when LOW - enables bus sharing and dynamic load isolation. |
| 2 (A) | Data Input | Non-inverting logic input; accepts 0–5.5 V signals regardless of VCC - supports mixed-supply domain interfacing. |
| 3 (GND) | Ground Reference | Primary return path for all internal circuitry and output current - must be low-impedance and decoupled near VCC pin. |
| 4 (Y) | Buffered Output | Tri-state output replicating A when OE = HIGH; high-impedance when OE = LOW - prevents bus contention in shared-data lines. |
| 5 (VCC) | Power Supply | Positive supply rail (1.65–5.5 V); powers internal logic and output stage - requires local 0.1 µF ceramic decoupling. |
Key Features
| Feature | Design Value |
|---|---|
| Wide VCC Range | 1.65 V to 5.5 V operation eliminates need for separate voltage translators in multi-rail systems. |
| Overvoltage-Tolerant I/O | Inputs and outputs withstand up to 5.5 V even when VCC = 1.65 V - simplifies interconnection with legacy 5 V peripherals. |
| IOFF Partial Power-Down | Blocks current flow between powered and unpowered sections during power sequencing - prevents latch-up and back-powering. |
| Low Propagation Delay | 2.0 ns typical tPLH/tPHL at 5 V enables timing-critical paths in high-frequency digital control loops. |
| Small Footprint | SC-74A-5 package occupies only 4.5 mm² board area - ideal for space-constrained portable and wearable electronics. |
Applications
| Industrial Sensor Interface | Portable Instrumentation I/O |
|---|---|
|
Use Scenario: Isolating analog-to-digital converter (ADC) digital control lines from noisy microcontroller GPIOs in battery-powered handheld meters. IC Role / Device Role / Timing Role: Non-inverting 3-state buffer providing bidirectional signal conditioning and bus contention prevention during ADC conversion cycles. Use Value: Prevents digital noise coupling into sensitive analog front-end via controlled tri-state gating and low-capacitance I/O (2.5 pF). |
Use Scenario: Enabling/disabling SPI peripheral select lines in ultra-compact medical diagnostic devices with tight PCB real estate. IC Role / Device Role / Timing Role: Single-channel logic buffer with fast enable/disable timing (tPZH ≤ 5.8 ns at 5 V) for precise peripheral activation windows. Use Value: Reduces SPI bus turnaround time and eliminates false peripheral activation through guaranteed high-Z isolation during idle states. |
| Automotive Body Control Module | Consumer IoT Edge Node |
|
Use Scenario: Level-shifting and isolating LIN bus transceiver control signals between 3.3 V MCU and 5 V transceiver in door module ECUs. IC Role / Device Role / Timing Role: Overvoltage-tolerant buffer allowing direct connection to 5 V LIN TX/RX control pins while powered from 3.3 V rail. Use Value: Eliminates external level shifters and reduces BOM count while maintaining AEC-Q100-compliant robustness (-55 °C to +125 °C). |
Use Scenario: Managing GPIO expansion for sensor fusion in Bluetooth LE-enabled smart home sensors with strict power and size constraints. IC Role / Device Role / Timing Role: Low-power, small-footprint buffer enabling dynamic reconfiguration of I²C/SPI peripheral addressing via OE-controlled bus partitioning. Use Value: Enables software-defined hardware partitioning with <1 µA quiescent ICC and 4.5 mm² SC-74A-5 footprint for miniaturized edge nodes. |
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 SC-70-5 (SC-74A-5) package; slightly higher ICC (10 µA max vs. 1.0 µA typ for NL17SZ126DBVT1G); identical VCC range and I/O tolerance. | Higher static current may impact battery life in always-on sensing nodes; otherwise functionally interchangeable in most digital interface roles. | Prefer NL17SZ126DBVT1G for ultra-low-quiescent-current designs; SN74LVC1G125DBVR offers broader TI support infrastructure. |
| 74LVC1G126GW,125 | SC-88A package (smaller 2.1 mm² footprint); identical electrical specs but different pinout (OE on Pin 1, A on Pin 2, GND on Pin 3, Y on Pin 4, VCC on Pin 5). | Requires PCB layout change due to incompatible pin mapping and smaller pad spacing - not drop-in compatible with NL17SZ126DBVT1G's SC-74A-5 layout. | Select 74LVC1G126GW,125 only when board space is paramount and layout revision is acceptable; verify thermal derating (JA = 377 °C/W vs. 320 °C/W). |
Compared with SN74LVC1G125DBVR and 74LVC1G126GW,125, the NL17SZ126DBVT1G offers the lowest typical quiescent current (1.0 µA), best thermal resistance in SC-74A-5 (320 °C/W), and identical functional behavior - making it optimal for power-sensitive, thermally constrained, and layout-stable designs.
Availability
NL17SZ126DBVT1G is available at Aetrix Electronics and suitable for industrial sensor interfaces, portable instrumentation I/O expansion, and automotive body control modules requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant sourcing.
Supply support for NL17SZ126DBVT1G 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 (formerly ON Semiconductor) is a global semiconductor supplier focused on energy-efficient electronics, delivering silicon solutions for automotive, industrial, cloud, medical, and IoT applications.
The NL17SZ126DBVT1G belongs to onsemi's NanoLogic® family of ultra-small logic ICs, engineered specifically for space- and power-constrained digital interface applications in portable and embedded systems.
FAQ
What is the maximum operating temperature range for the NL17SZ126DBVT1G?
The NL17SZ126DBVT1G is rated for operation from −55 °C to +125 °C, meeting extended industrial and automotive under-hood requirements. This specification is validated per the Recommended Operating Conditions table in the official datasheet and applies directly to the NL17SZ126DBVT1G in its SC-74A-5 package.
Does the NL17SZ126DBVT1G support 1.8 V logic levels?
Yes, the NL17SZ126DBVT1G fully supports 1.8 V operation: its VCC range includes 1.65 V to 5.5 V, and VIH/VIL thresholds scale with VCC (e.g., VIH = 0.65 × VCC min at 1.65–1.95 V). This ensures reliable switching with standard 1.8 V CMOS logic families when powered at 1.8 V.
Is the NL17SZ126DBVT1G pin-compatible with other packages in the NL17SZ126 family?
No - the NL17SZ126DBVT1G uses SC-74A-5 (5-pin) with pin order OE-A-GND-Y-VCC, while SOT-953 has A-GND-OE-Y-VCC and SC-88A uses OE-A-GND-Y-VCC but with different physical pad layout and orientation. Package-specific pinouts are defined in Figures 2 and the Ordering Information table; mechanical and electrical pin mapping is not interchangeable.
What is the typical propagation delay of the NL17SZ126DBVT1G at 3.3 V supply?
At VCC = 3.3 V, the NL17SZ126DBVT1G exhibits a typical propagation delay (tPLH/tPHL) of 2.5 ns under RL = 1 MΩ, CL = 15 pF conditions, as specified in the AC Electrical Characteristics table. This value remains consistent across the full operating temperature range.
Does the NL17SZ126DBVT1G require external pull-up or pull-down resistors on its OE pin?
No - the OE pin of the NL17SZ126DBVT1G is CMOS-compatible with rail-to-rail input thresholds and does not require external biasing. It functions correctly when driven directly from another logic output or microcontroller GPIO; floating OE is undefined and must be avoided per the Function Table.
NL17SZ126DBVT1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- 17SZ
- Package/Case:
- SC-74A, SOT-753
- 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:
- -55°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-74A
NL17SZ126DBVT1G FAQ
1.How can I place an order for NL17SZ126DBVT1G through Aetrix?
Please submit a Request for Quotation (RFQ) for NL17SZ126DBVT1G 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 NL17SZ126DBVT1G reliable?
The price and inventory of NL17SZ126DBVT1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NL17SZ126DBVT1G is usually 5 days.
3.What payment methods are accepted for NL17SZ126DBVT1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NL17SZ126DBVT1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NL17SZ126DBVT1G?
NL17SZ126DBVT1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NL17SZ126DBVT1G 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 NL17SZ126DBVT1G?
For technical support, including NL17SZ126DBVT1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NL17SZ126DBVT1G requirements.
6.How does Aetrix verify that NL17SZ126DBVT1G is sourced from the original manufacturer or authorized distributors?
All NL17SZ126DBVT1G 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 NL17SZ126DBVT1G meets industry standards.
7.What is the process for return or replacement of NL17SZ126DBVT1G?
All NL17SZ126DBVT1G units undergo pre-shipment inspection (PSI). If there is an issue with NL17SZ126DBVT1G, 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 NL17SZ126DBVT1G part is unused and in its original packaging.
Return procedure for NL17SZ126DBVT1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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