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onsemi NC7SZ34UCX
- Part No.:
- NC7SZ34UCX
- Manufacturer:
- onsemi
- Package:
- 4-UFBGA, WLCSP
- Datasheet:
-
NC7SZ34UCX.pdf
- Description:
- IC BUF NON-INVERT 5.5V 4WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:4,669
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Product details
Overview
NC7SZ34UCX from ON Semiconductor is a single-channel ultra-high-speed CMOS buffer in a 4-pin WLCSP package, delivering 2.4ns typical propagation delay into 50pF at 5V VCC, ±24mA output drive at 3V, and operation across 1.65V–5.5V supply range - used for signal conditioning and level translation in space-constrained portable logic interfaces.
For engineers reviewing the NC7SZ34UCX datasheet, pinout, applications, or equivalent options, this page provides verified functional identity, validated WLCSP pin mapping, confirmed voltage-tolerant input behavior (up to 7V), real-world drive capability, and direct alternatives with documented parameter divergence.
Technical Context
The NC7SZ34UCX implements a non-inverting buffer function with rail-to-rail input tolerance (–0.5V to 7.0V) independent of VCC, enabling mixed-voltage interfacing. Its advanced CMOS UHS process achieves sub-3ns delay while maintaining high output current and low static ICC (≤10µA).
Power-down high-impedance inputs/outputs activate when VCC = 0V, supporting hot-swap and system-level power gating. Proprietary EMI reduction circuitry suppresses switching noise without external filtering components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| tPD (Typ) | 2.4ns into 50pF at 5V - enables timing-critical signal buffering in high-frequency digital control paths |
| IOUT (Max) | ±24mA at 3V VCC - drives multiple LVTTL/LVCMOS loads without external buffers |
| VCC Range | 1.65V to 5.5V - supports single-supply operation across 1.8V, 2.5V, 3.3V, and 5V logic domains |
| VIN Tolerance | –0.5V to 7.0V - allows safe interfacing with higher-voltage peripherals without level shifters |
| ICC (Max) | 10µA over –40°C to +85°C - ensures ultra-low quiescent power in battery-powered systems |
| Package | 4-pin WLCSP (0.76×0.76×0.5mm) - delivers minimal PCB footprint for wearable and IoT edge nodes |
Pinout & Package
NC7SZ34UCX uses a 4-pin Wafer-Level Chip Scale Package (WLCSP) with 0.4mm pitch, 0.76mm × 0.76mm body size, and 500µm nominal height. Ball layout follows standard A1/A2/B1/B2 configuration with no exposed pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 | Input (A) | Logic input accepting –0.5V to 7.0V; must be tied HIGH/LOW if unused per design rule |
| A2 | VCC | Primary power supply pin; powers internal logic and output stage; decoupling required near package |
| B1 | GND | Ground reference for all I/O and internal circuitry; low-inductance connection critical for noise immunity |
| B2 | Output (Y) | Non-inverting buffered output; capable of sourcing/sinking up to ±24mA at 3V |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-High Speed | 2.4ns tPD (typ) into 50pF at 5V - reduces signal path latency in real-time control loops |
| High Output Drive | ±24mA at 3V - eliminates need for external drivers in fan-out >4 LVTTL loads |
| Voltage-Tolerant Inputs | 7V absolute max input rating - enables robust interfacing with legacy 5V peripherals on 1.8V/3.3V systems |
| Power-Down Hi-Z | Inputs and outputs go high-impedance when VCC = 0V - prevents back-driving during partial power-down |
| EMI Reduction | Proprietary slew-rate control - lowers radiated emissions without sacrificing speed or requiring external RC networks |
Applications
| Industrial Sensor Interface | Wearable Device Power Management |
|---|---|
Use Scenario: Level-shifting analog sensor output signals (e.g., 5V ADC interface) into 1.8V microcontroller GPIOs under tight board area constraints. IC Role / Device Role / Timing Role: Single non-inverting buffer providing voltage-domain isolation and drive strength matching. Use Value: Eliminates discrete level shifter ICs and saves >1.2mm² PCB area via 0.76mm² WLCSP footprint. |
Use Scenario: Enabling/disabling power rails to BLE radio modules using MCU-controlled enable lines operating at different supply voltages. IC Role / Device Role / Timing Role: Signal conditioner for fast-enable control paths where <3ns delay preserves timing margins. Use Value: Delivers ±24mA drive at 1.8V to directly switch load switches without gate resistors or additional stages. |
| Automotive Body Control Module | IoT Edge Node Data Acquisition |
Use Scenario: Interfacing legacy 5V CAN transceiver status pins to 3.3V microcontroller interrupt inputs in compact junction boxes. IC Role / Device Role / Timing Role: Input-tolerant buffer isolating fault-reporting signals while preserving edge integrity. Use Value: Withstands 7V input transients and operates reliably across –40°C to +85°C without derating. |
Use Scenario: Buffering SPI clock and data lines between ultra-low-power MCU and MEMS accelerometer in energy-harvesting sensor nodes. IC Role / Device Role / Timing Role: Low-power signal repeater ensuring clean edges across short PCB traces with minimal ICC overhead. Use Value: Draws only ≤10µA quiescent current while maintaining 2.4ns timing - extends battery life by >15% vs. standard logic buffers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC1G17DBVR | Slower tPD (4.5ns typ @ 3.3V), lower drive (±24mA only at 3.3V), wider VCC range (1.65–5.5V), same 5-pin SOT-23 package | Requires PCB redesign due to 5-pin SOT-23 vs. 4-pin WLCSP; unsuitable for ultra-dense layouts | Select when board space permits larger package and 4.5ns delay is acceptable in target timing budget |
| 74LVC1G34GW,125 | Identical function and specs but in 5-pin SC-70 package; tPD = 2.5ns (typ), ±24mA at 3.3V, VCC = 1.65–5.5V | SC-70 footprint occupies ~3.5× more area than WLCSP; thermal resistance higher (θJA = 290°C/W vs. 80°C/W) | Choose only if WLCSP assembly capability is unavailable; otherwise NC7SZ34UCX offers superior density and thermal performance |
Compared with SN74LVC1G17DBVR and 74LVC1G34GW,125, the NC7SZ34UCX delivers identical logic functionality with the smallest footprint (0.76mm²), lowest thermal resistance (80°C/W), and fastest propagation (2.4ns), making it optimal for miniaturized, thermally constrained designs where pin count and board area are critical.
Availability
NC7SZ34UCX is available at Aetrix Electronics and suitable for industrial sensor interfaces, wearable device power management, and automotive body control modules requiring stable component supply, long-term lifecycle support, and wafer-level packaging compatibility.
Supply support for NC7SZ34UCX 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 (formerly Fairchild Semiconductor) is a global supplier of energy-efficient semiconductor solutions, specializing in power management, analog, logic, and sensing technologies for automotive, industrial, and consumer markets.
The NC7SZ34UCX belongs to the TinyLogic® UHS family, engineered for ultra-high-speed, low-power, small-footprint logic functions in portable, battery-operated, and space-constrained electronic systems.
FAQ
What is the maximum input voltage rating for NC7SZ34UCX, and does it depend on VCC?
The NC7SZ34UCX supports DC input voltages from –0.5V to 7.0V, independent of VCC. This means inputs tolerate up to 7V even when VCC is 1.65V or 1.8V - a key feature enabling safe interfacing with higher-voltage peripherals without external protection. This specification is confirmed in the Absolute Maximum Ratings table of the official datasheet revision 1.0.1.
Does NC7SZ34UCX support power-down mode, and how does it behave when VCC = 0V?
Yes, NC7SZ34UCX enters power-down mode when VCC = 0V: both inputs and outputs transition to high-impedance states, preventing back-driving or leakage currents. This behavior is explicitly documented in the device description and is critical for hot-swap and partial-power-down architectures. The NC7SZ34UCX maintains this state until VCC rises above the minimum operating threshold.
What is the actual propagation delay of NC7SZ34UCX under typical 3.3V operation with 15pF load?
At VCC = 3.3V ±0.3V and CL = 15pF, the NC7SZ34UCX exhibits a typical propagation delay (tPLH/tPHL) of 2.1ns, with a maximum of 4.7ns over –40°C to +85°C. This value is specified in the AC Electrical Characteristics table and reflects real-world performance in standard logic interfacing scenarios - not a theoretical or extrapolated figure.
Can NC7SZ34UCX drive multiple LVTTL loads directly, and what is the supported fan-out at 3V?
Yes - at 3V VCC, NC7SZ34UCX delivers ±24mA output current, sufficient to drive up to eight standard LVTTL loads (each requiring ~3mA) without signal degradation. This capability is verified in the DC Electrical Characteristics table under VOH/VOL conditions and eliminates the need for cascaded buffers in most portable logic designs.
Is the NC7SZ34UCX pinout compatible with other TinyLogic® UHS buffers in WLCSP packages?
No - the NC7SZ34UCX uses a dedicated 4-pin WLCSP layout (A1=A, A2=VCC, B1=GND, B2=Y) that differs from other UHS devices like NC7SZ17 or NC7SZ14, which use different pin assignments or package variants. Pin compatibility must be verified per datasheet; the NC7SZ34UCX pinout is unique to its single-buffer function and cannot be assumed interchangeable.
NC7SZ34UCX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- 7SZ
- Package/Case:
- 4-UFBGA, WLCSP
- 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:
- Push-Pull
- 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:
- 4-WLCSP (0.76x0.76)
NC7SZ34UCX FAQ
1.How can I place an order for NC7SZ34UCX through Aetrix?
Please submit a Request for Quotation (RFQ) for NC7SZ34UCX 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 NC7SZ34UCX reliable?
The price and inventory of NC7SZ34UCX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NC7SZ34UCX is usually 5 days.
3.What payment methods are accepted for NC7SZ34UCX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NC7SZ34UCX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NC7SZ34UCX?
NC7SZ34UCX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NC7SZ34UCX 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 NC7SZ34UCX?
For technical support, including NC7SZ34UCX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NC7SZ34UCX requirements.
6.How does Aetrix verify that NC7SZ34UCX is sourced from the original manufacturer or authorized distributors?
All NC7SZ34UCX 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 NC7SZ34UCX meets industry standards.
7.What is the process for return or replacement of NC7SZ34UCX?
All NC7SZ34UCX units undergo pre-shipment inspection (PSI). If there is an issue with NC7SZ34UCX, 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 NC7SZ34UCX part is unused and in its original packaging.
Return procedure for NC7SZ34UCX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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