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onsemi NC7SZ126FHX
- Part No.:
- NC7SZ126FHX
- Manufacturer:
- onsemi
- Package:
- 6-UFDFN
- Datasheet:
-
NC7SZ126FHX.pdf
- Description:
- IC BUF NON-INVERT 5.5V 6MICROPK2
- Quantity:
- Payment:
- Shipping:
Inventory:2,427
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Product details
Overview
NC7SZ126FHX from ON Semiconductor is a single-channel, three-state buffer IC in the TinyLogic® UHS family, designed for level translation and bus isolation in space-constrained digital systems. It operates across 1.65V–5.5V VCC, delivers ±24mA output drive at 3V, and achieves 2.6ns typical propagation delay into 50pF at 5V - enabling high-speed signal routing in portable and low-power embedded interfaces.
For engineers reviewing the NC7SZ126FHX datasheet, pinout, applications, or equivalent options, key selection criteria include its 1×1mm MicroPak2 package, over-voltage tolerant inputs (up to 6V), 3-state output control, and compatibility with mixed-voltage logic domains (e.g., 5V-to-3V translation).
Technical Context
The NC7SZ126FHX implements a non-inverting buffer with active-high output enable (OE), where output Y follows input A only when OE is HIGH; otherwise, Y enters high-impedance state. Its CMOS design supports rail-to-rail input tolerance independent of VCC, allowing safe interfacing between higher-voltage peripherals and lower-voltage controllers.
Propagation delay varies with supply voltage and load: 2.1ns (typ) at 5V/50pF, 3.2ns (typ) at 3.3V/50pF, and 5.3ns (typ) at 1.8V/15pF. Output enable/disable times are specified down to 2.3ns (typ) at 5V, supporting fast bus arbitration in multi-drop configurations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 1.65V to 5.5V - enables direct use across 1.8V, 2.5V, 3.3V, and 5V logic domains without level shifters. |
| tPD (Typ) | 2.6ns at 5V into 50pF - supports >300MHz signal integrity in short-trace interconnects. |
| IOH/IOL | ±24mA at VCC = 3V - drives multiple LVTTL/LVCMOS loads or feeds moderate-capacitance PCB traces. |
| Input Voltage Tolerance | Up to 6V regardless of VCC - permits safe 5V-tolerant inputs in 3.3V or 1.8V systems. |
| Output State Control | Active-high OE pin - simplifies bus arbitration logic and eliminates need for external pull-ups on enable lines. |
| Package Dimensions | 1.0mm × 1.0mm body, 0.35mm pitch - fits ultra-dense layouts where SC70/SOT23 are too large. |
Pinout & Package
NC7SZ126FHX uses a 6-pin MicroPak2 package (1.0×1.0mm body, 0.35mm pitch), with pin 1 marked by chamfered corner. The package is leadless, bottom-terminal, and requires solder paste stencil optimization for reliable reflow.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OE | Active-high output enable - drives Y to high-Z when LOW; no internal pull-up/pull-down. |
| 2 | A | Buffer input - accepts 0–6V signals regardless of VCC; must be terminated HIGH/LOW, not floated. |
| 3 | GND | Digital ground reference - shared return path for input/output current and supply decoupling. |
| 4 | Y | Three-state output - actively driven HIGH/LOW when OE=HIGH; high-Z when OE=LOW. |
| 5 | VCC | Supply voltage - powers internal logic and output stage; bypass capacitor required near pin. |
| 6 | NC | No connect - electrically isolated terminal; no internal connection or function. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-High Speed | 2.6ns tPD (typ) at 5V/50pF - reduces timing margin pressure in high-frequency clock/data paths. |
| Over-Voltage Tolerant Inputs | 6V max input rating independent of VCC - eliminates external clamping diodes in mixed-supply systems. |
| Low-Power Three-State | IOZ ≤ ±10µA in high-Z - prevents leakage-induced logic contention during bus idle periods. |
| MicroPak2 Packaging | 1.0×1.0mm footprint - saves >50% board area vs. SC70-5 while maintaining thermal performance via exposed pad. |
| Broad VCC Range | 1.65V–5.5V operation - supports single-bom deployment across multiple voltage rails in modular designs. |
Applications
| USB Peripheral Interface | Low-Power Sensor Hub |
|---|---|
Use Scenario: Isolating I²C or GPIO lines between a 3.3V microcontroller and 5V USB transceiver IC. IC Role / Device Role / Timing Role: Level-translating buffer with 3-state control to prevent bus contention during USB suspend/resume transitions. Use Value: Enables bidirectional signal integrity without external voltage translators, leveraging 6V-tolerant inputs and 3.3V-compatible outputs. |
Use Scenario: Multiplexing analog sensor outputs or digital status flags onto a shared MCU data bus in wearable devices. IC Role / Device Role / Timing Role: Bus-isolation buffer controlled by MCU GPIO to enable/disable sensor readout channels on demand. Use Value: Reduces system standby current by placing unused sensor paths in high-Z, minimizing leakage through unselected channels. |
| Industrial PLC I/O Module | Automotive Body Control Unit |
Use Scenario: Driving LED indicators or optocoupler inputs from a 1.8V FPGA I/O bank in an industrial controller. IC Role / Device Role / Timing Role: Voltage-level-shifting buffer providing ±24mA sink/source capability for direct LED drive. Use Value: Eliminates discrete transistor drivers and reduces BOM count while maintaining fast turn-on/turn-off response. |
Use Scenario: Interfacing legacy 5V CAN transceiver status pins to a 3.3V automotive microcontroller's GPIO. IC Role / Device Role / Timing Role: Input-tolerant buffer isolating fault-reporting signals without requiring external resistive dividers. Use Value: Ensures robust signal capture during power sequencing mismatches and improves EMC resilience via integrated noise suppression. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buffer-with-three-state applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC1G125DBVR | 5-pin SOT-23 package; 1.65–5.5V VCC; tPD = 3.7ns (typ) at 3.3V/50pF; no 6V input tolerance. | Larger footprint (2.9×1.6mm); lacks over-voltage input protection - requires external clamping for 5V-tolerant use. | Prefer when board space allows SOT-23 and input voltages are strictly within VCC range. |
| 74LVC1G126GW,125 | 5-pin SC70 package; 1.65–5.5V VCC; tPD = 3.2ns (typ) at 3.3V/50pF; input tolerance limited to VCC + 0.3V. | 0.65mm wider than NC7SZ126FHX (1.25mm vs. 1.0mm); incompatible with 1.0mm-pitch land patterns. | Select when SC70 is preferred for assembly compatibility and over-voltage tolerance is not required. |
Compared with SN74LVC1G125DBVR and 74LVC1G126GW,125, the NC7SZ126FHX offers superior input over-voltage resilience and the smallest footprint, making it optimal for miniaturized, mixed-voltage systems where layout density and interface robustness are critical.
Availability
NC7SZ126FHX is available at Aetrix Electronics and suitable for USB peripheral interfaces, low-power sensor hubs, and industrial I/O modules requiring stable component supply, consistent MicroPak2 packaging, and guaranteed green compliance.
Supply support for NC7SZ126FHX 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
ON Semiconductor is a global semiconductor manufacturer specializing in energy-efficient power management, analog, logic, and sensor solutions for automotive, industrial, and consumer markets.
The NC7SZ126FHX belongs to the TinyLogic® UHS family - engineered for ultra-small footprints and high-speed, low-voltage logic interfacing in portable and space-constrained embedded systems.
FAQ
What is the maximum input voltage rating for NC7SZ126FHX?
The NC7SZ126FHX supports DC input voltages up to 6.0V regardless of VCC level, enabling safe interfacing with 5V signals in 1.8V or 3.3V systems without external protection circuitry. This over-voltage tolerance is confirmed in the Absolute Maximum Ratings table and applies to all inputs (A and OE) under static conditions.
Does NC7SZ126FHX require external pull-up or pull-down resistors on its inputs?
Yes - unused inputs on NC7SZ126FHX must be actively held HIGH or LOW; floating inputs are prohibited per datasheet Note 1. Neither OE nor A has internal termination, so external resistors (typically 10–100kΩ) are required for deterministic logic states during power-up or tri-state conditions.
What is the thermal resistance (θJA) of the NC7SZ126FHX package?
The NC7SZ126FHX in MicroPak2 package has a junction-to-ambient thermal resistance (θJA) of 560°C/W, as specified in the Recommended Operating Conditions section. This value assumes standard JEDEC 2-layer board conditions and informs derating calculations for continuous operation above 85°C ambient.
Can NC7SZ126FHX drive a 50pF load at 1.8V VCC with guaranteed timing?
Yes - the NC7SZ126FHX guarantees tPLH/tPHL ≤ 13.8ns (max) at 1.65V/15pF and ≤ 11.5ns (max) at 1.8V/15pF. For 50pF loads, timing is characterized at 3.3V and 5V only; at 1.8V, users must validate timing empirically or reduce load capacitance to meet system requirements.
Is NC7SZ126FHX pin-compatible with other variants in the NC7SZ126 family?
No - NC7SZ126FHX uses a 6-pin MicroPak2 package with pin 6 as NC, whereas NC7SZ126M5X (SOT23) and NC7SZ126P5X (SC70) use 5-pin configurations with no NC pin. Land patterns, solder reflow profiles, and PCB layout are not interchangeable across these variants.
NC7SZ126FHX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- 7SZ
- Package/Case:
- 6-UFDFN
- 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 ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-MicroPak2™
NC7SZ126FHX FAQ
1.How can I place an order for NC7SZ126FHX through Aetrix?
Please submit a Request for Quotation (RFQ) for NC7SZ126FHX 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 NC7SZ126FHX reliable?
The price and inventory of NC7SZ126FHX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NC7SZ126FHX is usually 5 days.
3.What payment methods are accepted for NC7SZ126FHX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NC7SZ126FHX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NC7SZ126FHX?
NC7SZ126FHX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NC7SZ126FHX 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 NC7SZ126FHX?
For technical support, including NC7SZ126FHX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NC7SZ126FHX requirements.
6.How does Aetrix verify that NC7SZ126FHX is sourced from the original manufacturer or authorized distributors?
All NC7SZ126FHX 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 NC7SZ126FHX meets industry standards.
7.What is the process for return or replacement of NC7SZ126FHX?
All NC7SZ126FHX units undergo pre-shipment inspection (PSI). If there is an issue with NC7SZ126FHX, 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 NC7SZ126FHX part is unused and in its original packaging.
Return procedure for NC7SZ126FHX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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