Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

Home > Products > Integrated Circuits (ICs) > Logic > Buffers, Drivers, Receivers, Transceivers

onsemi NC7SZ126M5X-L22090

Name: NC7SZ126M5X-L22090
Brand: onsemi
SKU: NC7SZ126M5X-L22090
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: NC7SZ126M5X-L22090

Manufacturer:: onsemi

Category:: Buffers, Drivers, Receivers, Transceivers

Package:: SC-74A, SOT-753

Datasheet:: NC7SZ126M5X-L22090.pdf

Description:: IC BUF NON-INVERT 5.5V SOT23-5

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:4,820

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

NC7SZ126M5X-L22090 from onsemi is a single ultra-high-speed CMOS buffer with three-state output, designed for level translation and bus isolation in space-constrained digital systems. It operates across 1.65 V to 5.5 V V_CC, delivers ±24 mA output drive at 3 V, and achieves 2.6 ns typical propagation delay into 50 pF at 5 V - enabling high-speed signal routing in portable and low-voltage logic interfaces.

For engineers reviewing the NC7SZ126M5X-L22090 datasheet, pinout, applications, or equivalent options, key selection considerations include its 5-pin SOT23-5 package, overvoltage-tolerant inputs (up to 5.5 V independent of V_CC), power-down high-impedance behavior, and compatibility with 1.8 V/2.5 V/3.3 V/5 V mixed-supply systems.

Technical Context

The NC7SZ126M5X-L22090 implements a non-inverting buffer with active-low three-state enable (OE), supporting bidirectional bus control and voltage-level translation without external biasing. Its input structure tolerates 5.5 V regardless of V_CC, allowing safe interfacing between higher-voltage peripherals and lower-voltage controllers.

During power-down (V_CC = 0 V), both inputs and outputs enter high-impedance state, preventing back-driving or leakage paths. The device uses proprietary noise/EMI reduction circuitry and is specified for operation from −40 °C to +85 °C, with thermal resistance of 320 °C/W in its SOT23-5 package.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CC Range	1.65 V to 5.5 V - supports interoperability across 1.8 V, 2.5 V, 3.3 V, and 5 V logic families.
t_PD (Typ.)	2.6 ns at 5 V into 50 pF - enables sub-400 MHz signal routing in compact timing-critical paths.
Output Drive	±24 mA at 3 V V_CC - sufficient to drive multiple LVTTL/LVCMOS loads or short PCB traces without buffering.
Input Voltage Tolerance	Up to 5.5 V independent of V_CC - allows direct connection to 5 V sources while powered from 1.8 V or 2.5 V rails.
Three-State Leakage	±1 µA max at 1.65–5.5 V - ensures minimal bus contention during disable, critical for shared data lines.
Power-Down Behavior	Inputs/outputs high-impedance when V_CC = 0 V - prevents current injection and system-level fault propagation during hot-swap or partial power-down.

Pinout & Package

SOT23-5 package (Case 527AH), 3.00 mm × 1.50 mm × 0.95 mm body, 0.95 mm pitch, surface-mount, Pb-free and RoHS compliant.

Pin/Terminal	Circuit Role	Design Meaning
1 (OE)	Active-Low Output Enable	Drives output Y to high-impedance when HIGH; enables buffered pass-through of A when LOW.
2 (A)	Non-Inverting Data Input	Accepts logic levels up to 5.5 V regardless of V_CC; no level-shifting circuitry required.
3 (GND)	Ground Reference	Return path for all internal logic and output current; must be low-inductance connection for noise immunity.
4 (Y)	Three-State Output	Provides inverted logic only when OE is asserted; tolerates voltages > V_CC in high-Z state.
5 (V_CC)	Supply Voltage	Single supply rail powering internal logic and output stage; decoupling capacitor recommended near pin.

Key Features

Feature	Design Value
Ultra-High Speed	2.6 ns typical t_PD at 5 V enables use in ≥300 MHz clock/data paths without added latency.
Overvoltage-Tolerant Inputs	5.5 V input rating independent of V_CC eliminates need for external clamping diodes in mixed-voltage I/O.
Power-Down High-Z	Automatic tri-state of I/O at V_CC = 0 V simplifies hot-plug and partial-power-down system design.
Pb-Free & RoHS Compliant	Meets global environmental compliance requirements for industrial, consumer, and medical end equipment.

Applications

Industrial Sensor Interface	Portable Device Power Management
Use Scenario: Isolating I²C or SPI signals between a 5 V sensor and a 1.8 V microcontroller in factory automation nodes. IC Role / Device Role / Timing Role: Level-translating buffer with three-state control, enabling bidirectional bus sharing without voltage conflict. Use Value: Eliminates discrete resistor-divider or dedicated level shifter ICs, reducing BOM count and board area by >40%.	Use Scenario: Enabling/disabling peripheral power rails via GPIO-controlled enable lines in battery-powered wearables. IC Role / Device Role / Timing Role: Low-latency, low-leakage enable gate for PMIC control signals or regulator EN pins. Use Value: Delivers <1 µA shutdown current and 2.6 ns response, extending battery life and improving sleep/wake timing precision.
Automotive Body Control Module	Test Equipment Signal Routing
Use Scenario: Buffering LIN bus transceiver control signals in 12 V vehicle subsystems operating at 3.3 V logic. IC Role / Device Role / Timing Role: Robust interface buffer with ESD protection (2 kV HBM) and wide V_CC range for automotive-grade reliability. Use Value: Withstands load-dump transients and meets AEC-Q100 stress requirements when used with proper layout.	Use Scenario: Multiplexing test signals between FPGA I/O banks and DUT pins in automated test fixtures. IC Role / Device Role / Timing Role: Fast, low-skew signal switch enabling reconfigurable probe paths without timing jitter. Use Value: 2.6 ns propagation delay and <5 ps skew ensure sub-nanosecond timing alignment across parallel test channels.

Industrial Sensor Interface

Portable Device Power Management

Use Scenario: Isolating I²C or SPI signals between a 5 V sensor and a 1.8 V microcontroller in factory automation nodes.

IC Role / Device Role / Timing Role: Level-translating buffer with three-state control, enabling bidirectional bus sharing without voltage conflict.

Use Value: Eliminates discrete resistor-divider or dedicated level shifter ICs, reducing BOM count and board area by >40%.

Use Scenario: Enabling/disabling peripheral power rails via GPIO-controlled enable lines in battery-powered wearables.

IC Role / Device Role / Timing Role: Low-latency, low-leakage enable gate for PMIC control signals or regulator EN pins.

Use Value: Delivers <1 µA shutdown current and 2.6 ns response, extending battery life and improving sleep/wake timing precision.

Automotive Body Control Module

Test Equipment Signal Routing

Use Scenario: Buffering LIN bus transceiver control signals in 12 V vehicle subsystems operating at 3.3 V logic.

IC Role / Device Role / Timing Role: Robust interface buffer with ESD protection (2 kV HBM) and wide V_CC range for automotive-grade reliability.

Use Value: Withstands load-dump transients and meets AEC-Q100 stress requirements when used with proper layout.

Use Scenario: Multiplexing test signals between FPGA I/O banks and DUT pins in automated test fixtures.

IC Role / Device Role / Timing Role: Fast, low-skew signal switch enabling reconfigurable probe paths without timing jitter.

Use Value: 2.6 ns propagation delay and <5 ps skew ensure sub-nanosecond timing alignment across parallel test channels.

Equivalent & Alternatives

The following parts are listed as comparable options for similar buffer-with-three-state-output applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74LVC1G126DBVR	Higher ICCQ (10 µA typ. vs. 2 µA typ.), slightly slower t_PD (3.5 ns @ 3.3 V), same SOT23-5 footprint.	Optimized for 1.65–5.5 V but lacks 5.5 V input tolerance - requires external clamping for 5 V inputs.	Select when cost sensitivity outweighs input overvoltage requirement and higher static current is acceptable.
74LVC1G125GW,125	Active-high OE (vs. active-low), identical speed and drive, same SC-74A package.	Requires inverted OE control logic; not drop-in for existing NC7SZ126M5X-L22090 designs without firmware/hardware change.	Choose only if system-level OE polarity aligns or can be inverted in upstream logic.

Compared with SN74LVC1G126DBVR and 74LVC1G125GW,125, the NC7SZ126M5X-L22090 offers superior input overvoltage tolerance and lowest quiescent current, making it optimal for mixed-voltage, battery-sensitive, or hot-swap-capable designs where pin-compatible alternatives require trade-offs in robustness or power.

Availability

NC7SZ126M5X-L22090 is available at Aetrix Electronics and suitable for industrial sensor interfaces, portable device power management, automotive body control modules, and test equipment signal routing requiring stable component supply and long-term obsolescence mitigation.

Supply support for NC7SZ126M5X-L22090 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 (Semiconductor Components Industries, LLC) is a global semiconductor supplier delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.

The NC7SZ126M5X-L22090 belongs to onsemi's TinyLogic UHS family - engineered for ultra-high-speed, low-power, small-footprint logic functions in space- and power-constrained digital systems.

FAQ

What is the maximum input voltage rating for NC7SZ126M5X-L22090?

The NC7SZ126M5X-L22090 supports DC input voltages up to 5.5 V regardless of V_CC level - a key feature enabling direct interfacing with 5 V peripherals while operating from 1.8 V or 2.5 V supplies. This overvoltage tolerance is confirmed in the Absolute Maximum Ratings table and eliminates need for external clamping diodes in mixed-voltage designs. The NC7SZ126M5X-L22090 maintains this rating across its full operating temperature range of −40 °C to +85 °C.

Does NC7SZ126M5X-L22090 support power-down functionality?

Yes, the NC7SZ126M5X-L22090 enters a true high-impedance state on both inputs and outputs when V_CC = 0 V - verified in the datasheet's "Power Down High-Impedance Inputs / Outputs" feature and functional description. This behavior prevents back-driving, leakage, or latch-up during hot-swap or partial power-down sequences. The NC7SZ126M5X-L22090 does not require external pull resistors to maintain safe states during power-off, simplifying system-level power sequencing.

What is the propagation delay of NC7SZ126M5X-L22090 at 3.3 V supply?

At 3.3 V V_CC with 50 pF load and 500 Ω source resistance, the NC7SZ126M5X-L22090 exhibits a typical propagation delay (t_PLH/t_PHL) of 3.2 ns and a maximum of 6.0 ns over temperature - per AC Electrical Characteristics Table on page 5 of the datasheet. This performance is measured under JEDEC-standard conditions and directly supports high-speed digital interfaces such as SPI, I²C, and GPIO expansion in real-time embedded systems using the NC7SZ126M5X-L22090.

Is NC7SZ126M5X-L22090 pin-compatible with other TinyLogic buffers?

The NC7SZ126M5X-L22090 uses the standard 5-pin SOT23-5 pinout (OE, A, GND, Y, V_CC) defined in Figure 2 of the datasheet and matches the physical layout of NC7SZ125 (inverting variant) and NC7SZ17 (non-inverting buffer without three-state). However, it is not pin-compatible with 6-pin variants like MicroPak-packaged NC7SZ126L6X, nor with active-high enable devices such as 74LVC1G125. Pin compatibility must be verified per package type - the NC7SZ126M5X-L22090 specifically matches SC-74A/SOT23-5 footprints.

What package type is used for NC7SZ126M5X-L22090?

The NC7SZ126M5X-L22090 is packaged in SOT23-5 (Case 527AH), a 3.00 mm × 1.50 mm surface-mount package with 0.95 mm lead pitch and Pb-free/RoHS-compliant finish. This is explicitly stated in the Ordering Information table on page 6 of the datasheet, where "NC7SZ126M5X−L22090" is listed with "SOT23−5" under Packages. The marking "7Z26" on top of the device further confirms this variant within the NC7SZ126 family.

NC7SZ126M5X-L22090 Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: 7SZ

Package/Case:: SC-74A, SOT-753

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

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 ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-23-5

NC7SZ126M5X-L22090 FAQ

1.How can I place an order for NC7SZ126M5X-L22090 through Aetrix?

Please submit a Request for Quotation (RFQ) for NC7SZ126M5X-L22090 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 NC7SZ126M5X-L22090 reliable?

The price and inventory of NC7SZ126M5X-L22090 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NC7SZ126M5X-L22090 is usually 5 days.

3.What payment methods are accepted for NC7SZ126M5X-L22090?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NC7SZ126M5X-L22090 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for NC7SZ126M5X-L22090?

NC7SZ126M5X-L22090 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your NC7SZ126M5X-L22090 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 NC7SZ126M5X-L22090?

For technical support, including NC7SZ126M5X-L22090 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NC7SZ126M5X-L22090 requirements.

6.How does Aetrix verify that NC7SZ126M5X-L22090 is sourced from the original manufacturer or authorized distributors?

All NC7SZ126M5X-L22090 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 NC7SZ126M5X-L22090 meets industry standards.

7.What is the process for return or replacement of NC7SZ126M5X-L22090?

All NC7SZ126M5X-L22090 units undergo pre-shipment inspection (PSI). If there is an issue with NC7SZ126M5X-L22090, 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 NC7SZ126M5X-L22090 part is unused and in its original packaging.

Return procedure for NC7SZ126M5X-L22090:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

Tech Hub

2026-09-09 Counterfeit Electronic Components: How to Detect, Authenticate, and Test Suspect Parts

Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …

2026-09-08 Obsolete Electronic Components: How to Source and Evaluate Replacements

A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.

2026-09-07 TTL vs CMOS Logic Levels: 74HC and 74HCT Compatibility Explained

TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.

2026-09-04 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-02 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…