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Nexperia USA Inc. 74LVC574AD,118
- Part No.:
- 74LVC574AD,118
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Flip Flops
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
74LVC574AD,118.pdf
- Description:
- IC FF D-TYPE SNGL 8BIT 20SO
- Quantity:
- Payment:
- Shipping:
Inventory:1,658
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Product details
Overview
74LVC574AD,118 from Nexperia is an octal positive-edge-triggered D-type flip-flop with 3-state outputs, 5 V tolerant I/O, and IOFF partial power-down protection. It operates from 1.2 V to 3.6 V supply, supports mixed-voltage translation between 3.3 V and 5 V systems, and features Schmitt-trigger inputs for noise immunity. Used in bus interface, data latching, and level-shifting applications in industrial control and embedded logic.
For engineers reviewing the 74LVC574AD,118 datasheet, 74LVC574AD,118 pinout, 74LVC574AD,118 application, or 74LVC574AD,118 equivalent, key selection criteria include its 3.6 V max VCC, 5.5 V overvoltage-tolerant inputs, -40 °C to +125 °C operating range, 7 ns max propagation delay at 3.3 V, and SO20 (SOT163-1) package compatibility with legacy 74-series footprints.
Technical Context
This device implements eight independent D-type latches synchronized on the LOW-to-HIGH clock transition, with separate output enable (active LOW) controlling high-impedance state without affecting internal register contents. Its IOFF circuitry actively disables outputs when VCC = 0 V, preventing backflow current during partial power-down sequences.
Schmitt-trigger inputs ensure robust operation with slow-rising signals, while JEDEC-compliant voltage ranges (JESD8-7A/5A/C) and 2 kV HBM ESD rating support reliable deployment in noisy industrial environments. The flow-through pinout minimizes PCB trace length between D and Q pins, reducing skew and signal integrity issues in high-speed parallel bus designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 1.2 V to 3.6 V - Enables direct interface with 1.8 V, 2.5 V, and 3.3 V logic domains without level shifters. |
| Input Voltage Tolerance | Up to 5.5 V - Allows safe connection to 5 V sources in mixed-supply systems without external clamping. |
| Propagation Delay (tpd) | Max 7.0 ns at VCC = 3.3 V - Supports >120 MHz bus operation with deterministic timing margins. |
| Set-up/Hold Time | tsu = 2.0 ns, th = +1.5 ns at VCC = 3.3 V - Defines minimum data stability window before/after clock edge for reliable capture. |
| IOFF Leakage | < ±10 μA at VCC = 0 V - Ensures negligible current flow during hot-swap or power sequencing events. |
| Operating Temperature | -40 °C to +125 °C - Qualified for under-hood, motor drive, and industrial automation environments. |
| ESD Rating | HBM > 2000 V, CDM > 1000 V - Meets IEC 61000-4-2 system-level robustness requirements. |
Pinout & Package
74LVC574AD,118 is supplied in SO20 (SOT163-1) plastic small outline package: 20-pin, 7.5 mm body width, 1.27 mm pitch, surface-mount, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OE) | Output Enable (active LOW) | Asserting LOW enables Q0–Q7 outputs; HIGH forces all outputs to high-impedance, independent of clock or register state. |
| 2–9 (D0–D7) | Data Inputs | Asynchronous inputs sampled on rising CP edge; tolerate up to 5.5 V regardless of VCC level. |
| 10 (GND) | Ground Reference | 0 V reference for all I/O and internal logic; must be low-impedance for noise immunity. |
| 11 (CP) | Clock Input | Positive-edge-triggered; Schmitt-trigger input accepts slow edges and rejects noise below hysteresis threshold. |
| 12–19 (Q0–Q7) | Data Outputs | Registered outputs driven in phase with CP; 3-state capable with controlled rise/fall times per JEDEC specs. |
| 20 (VCC) | Supply Voltage | Core logic supply (1.2–3.6 V); powers internal registers and output buffers; IOFF active when VCC = 0 V. |
Key Features
| Feature | Design Value |
|---|---|
| 5 V tolerant I/O | Inputs and outputs withstand 5.5 V even when VCC = 1.2 V - eliminates external level translators in mixed-voltage buses. |
| IOFF partial power-down | Outputs automatically enter high-Z when VCC = 0 V - prevents back-current damage during board hot-plug or power sequencing. |
| Schmitt-trigger inputs | Hysteresis ≥ 0.3 V at VCC = 3.3 V - rejects noise on slow-rising control lines (e.g., reset, enable) without external RC filtering. |
| Flow-through pinout | Dn and Qn aligned on opposite sides (e.g., D0 pin 2 → Q0 pin 19) - simplifies PCB routing and reduces crosstalk in parallel data paths. |
| JEDEC-compliant voltage ranges | Valid across JESD8-7A (1.65–1.95 V), JESD8-5A (2.3–2.7 V), and JESD8-C (2.7–3.6 V) - ensures interoperability with multi-vendor 1.8 V/2.5 V/3.3 V systems. |
Applications
| Industrial Bus Interface | Microcontroller GPIO Expansion |
|---|---|
Use Scenario: Isolating and latching parallel address/data bus signals between a 3.3 V microcontroller and legacy 5 V peripheral ICs. IC Role / Device Role / Timing Role: Acts as an octal transparent latch synchronizing asynchronous bus writes with precise clock edge timing and 3-state isolation during read cycles. Use Value: Eliminates need for discrete level shifters while maintaining <7 ns propagation delay and full 5 V tolerance on all I/O pins. | Use Scenario: Expanding digital I/O capability of a resource-constrained MCU by adding 8-bit bidirectional port latched on demand. IC Role / Device Role / Timing Role: Provides registered output buffering and input sampling synchronized to system clock, decoupling MCU timing from peripheral response latency. Use Value: Enables deterministic read-modify-write operations on external peripherals without software bit-banging overhead or timing jitter. |
| Motor Control Logic Sequencing | Test Equipment Signal Conditioning |
Use Scenario: Capturing and holding safety-critical status bits (e.g., overcurrent, thermal fault) from analog comparators before MCU polling. IC Role / Device Role / Timing Role: Functions as a fault register with edge-triggered capture and non-volatile hold until cleared by OE deassertion. Use Value: Guarantees glitch-free capture of fast transient faults via Schmitt-trigger inputs and eliminates missed events due to slow MCU interrupt latency. | Use Scenario: Conditioning and synchronizing multiple TTL/CMOS test signals into a unified 3.3 V logic domain for digitizer input. IC Role / Device Role / Timing Role: Serves as a synchronized input sampler and output driver, translating variable-voltage stimulus signals into clean, timed digital vectors. Use Value: Maintains signal integrity across voltage domains while providing precise setup/hold timing control for automated test pattern generation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal D-type flip-flop applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC574APWR | TSSOP20 package (SOT360-1); identical electrical specs but 4.4 mm body width and finer 0.65 mm pitch. | Better suited for space-constrained PCBs; requires re-optimized layout for thermal and signal integrity. | Select when board area is critical and assembly process supports fine-pitch TSSOP. |
| 74LVCH16374ADGG | 16-bit version in 48-pin TSSOP; includes bus-hold and higher drive strength (24 mA). | Targets wider data buses; not pin-compatible; requires redesign of footprint and routing. | Choose only when scaling to 16-bit parallel interfaces and enhanced noise immunity is required. |
Compared with SN74LVC574APWR, 74LVC574AD,118 offers superior thermal dissipation in SO20 and easier hand-soldering, while 74LVCH16374ADGG trades pin compatibility for doubled width and bus-hold functionality-neither is drop-in replaceable without layout or firmware changes.
Availability
74LVC574AD,118 is available at Aetrix Electronics and suitable for industrial bus interface, microcontroller GPIO expansion, motor control logic sequencing, and test equipment signal conditioning requiring stable component supply across extended temperature ranges.
Supply support for 74LVC574AD,118 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
Nexperia is a global semiconductor expert delivering high-performance logic, analog, and MOSFET solutions optimized for efficiency, reliability, and manufacturability in high-volume applications.
The 74LVC574A belongs to Nexperia's LVC logic family, designed specifically for low-voltage, mixed-signal interfacing in industrial, automotive (non-safety), and computing systems where power efficiency, voltage translation, and robust ESD performance are critical.
FAQ
Can 74LVC574AD,118 operate with a 1.2 V supply and still accept 5 V inputs?
Yes. The device is fully specified down to 1.2 V VCC and maintains 5.5 V input tolerance across its entire supply range. This is achieved through internal clamping and gate oxide design that isolates input protection diodes from core logic, enabling true mixed-voltage translation without external components.
What is the maximum clock frequency supported at 2.5 V VCC?
At VCC = 2.5 V (within JESD8-5A range), the maximum guaranteed clock frequency is 100 MHz over the full -40 °C to +125 °C range. This is derived from the 9.1 ns maximum propagation delay (tpd) and 6.6 ns maximum disable time (tdis) specified in Table 7 for the 2.3 V to 2.7 V range.
Does the IOFF feature require external circuitry to function?
No. IOFF is fully internal and activates automatically when VCC drops to 0 V. The circuitry disables output drivers and presents high-impedance on all Q pins without any external bias, pull-up, or control signals-ensuring safe hot-swap behavior in modular systems.
How does the Schmitt-trigger input improve noise immunity compared to standard CMOS inputs?
Schmitt-trigger inputs provide ≥0.3 V hysteresis at 3.3 V, meaning the threshold for rising edges (~1.8 V) differs from falling edges (~1.5 V). This prevents multiple toggles on slow or noisy signals-such as long PCB traces or unshielded cables-and eliminates the need for external RC filters in industrial control applications.
74LVC574AD,118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74LVC
- Package/Case:
- 20-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Standard
- Type:
- D-Type
- Output Type:
- Tri-State, Non-Inverted
- Number of Elements:
- 1
- Number of Bits per Element:
- 8
- Clock Frequency:
- 200 MHz
- Max Propagation Delay @ V, Max CL:
- 7ns @ 3.3V, 50pF
- Trigger Type:
- Positive Edge
- Current - Output High, Low:
- 24mA, 24mA
- Voltage - Supply:
- 1.65V ~ 3.6V
- Current - Quiescent (Iq):
- 10 µA
- Input Capacitance:
- 5 pF
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SO
74LVC574AD,118 FAQ
1.How can I place an order for 74LVC574AD,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVC574AD,118 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 74LVC574AD,118 reliable?
The price and inventory of 74LVC574AD,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVC574AD,118 is usually 5 days.
3.What payment methods are accepted for 74LVC574AD,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVC574AD,118 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LVC574AD,118?
74LVC574AD,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVC574AD,118 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 74LVC574AD,118?
For technical support, including 74LVC574AD,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVC574AD,118 requirements.
6.How does Aetrix verify that 74LVC574AD,118 is sourced from the original manufacturer or authorized distributors?
All 74LVC574AD,118 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 74LVC574AD,118 meets industry standards.
7.What is the process for return or replacement of 74LVC574AD,118?
All 74LVC574AD,118 units undergo pre-shipment inspection (PSI). If there is an issue with 74LVC574AD,118, 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 74LVC574AD,118 part is unused and in its original packaging.
Return procedure for 74LVC574AD,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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