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Nexperia USA Inc. 74LVC574ADB,118
- Part No.:
- 74LVC574ADB,118
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Flip Flops
- Package:
- 20-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
74LVC574ADB,118.pdf
- Description:
- IC FF D-TYPE SNGL 8BIT 20SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,513
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Product details
Overview
74LVC574ADB,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 74LVC574ADB,118 datasheet, 74LVC574ADB,118 pinout, 74LVC574ADB,118 application, or 74LVC574ADB,118 equivalent, this device is selected for its wide VCC range (1.2–3.6 V), guaranteed 5.5 V input tolerance, sub-9 ns propagation delay at 3.3 V, IOFF-enabled safe power-down behavior, and SO20 package compatibility with legacy 74-series footprints.
Technical Context
This device implements eight independent D-type latches synchronized to the rising edge of CP, with separate OE control enabling high-impedance output states without affecting internal register state. Its IOFF circuitry actively disables outputs when VCC = 0 V, preventing backflow current during partial power-down sequences in multi-rail systems.
Schmitt-trigger inputs ensure robust operation with slow-rising signals, while JEDEC-compliant voltage thresholds (e.g., VIH = 0.65×VCC min) and ±24 mA drive capability support direct TTL interfacing and reliable signal integrity across temperature (−40 °C to +125 °C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Function | Octal D-type flip-flop with 3-state outputs and positive-edge clock triggering |
| Supply Voltage Range | 1.2 V to 3.6 V - enables operation in ultra-low-power and mixed-voltage domains |
| Input Voltage Tolerance | Up to 5.5 V - allows direct connection to 5 V buses without external level shifters |
| Propagation Delay (tpd) | 1.5 ns (min) to 7.0 ns (max) at VCC = 3.3 V - supports >120 MHz system timing |
| IOFF Protection | Active at VCC = 0 V - prevents destructive back-current during hot-swap or partial power-down |
| Operating Temperature | −40 °C to +125 °C - qualified for extended industrial and under-hood environments |
| ESD Rating | HBM >2000 V, CDM >1000 V - meets JEDEC JS-001/JS-002 Class 2/C3 for robust handling |
Pinout & Package
74LVC574ADB,118 is supplied in a plastic small outline package (SO20, SOT163-1) with 20 leads, 7.5 mm body width, and standard 1.27 mm lead pitch. Pin 1 is marked by a notch or bevel on the package top-left corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OE) | Output enable (active LOW) | Asserting LOW enables Q0–Q7; HIGH forces all outputs into high-impedance state |
| 2 (VCC) | Positive supply rail | Accepts 1.2–3.6 V; powers logic core and output buffers |
| 3–10 (D0–D7) | Data inputs | Sampled on LOW-to-HIGH CP transition; tolerate up to 5.5 V regardless of VCC |
| 11 (CP) | Clock input | Rising-edge sensitive; Schmitt-triggered for noise immunity on slow edges |
| 12–19 (Q0–Q7) | Registered outputs | 3-state; driven only when OE = LOW; otherwise float to high-Z |
| 10 (GND) | Ground reference | 0 V return path for all internal circuits and I/O |
| 20 (VCC) | Supply voltage | Duplicate VCC pin for improved power distribution and reduced supply impedance |
Key Features
| Feature | Design Value |
|---|---|
| Wide VCC range (1.2–3.6 V) | Enables single-device deployment across battery-powered, low-voltage microcontrollers and legacy 3.3 V systems |
| 5.5 V tolerant inputs | Eliminates need for external level translators when interfacing with 5 V peripherals or legacy buses |
| IOFF partial power-down | Guarantees zero back-current when VCC is removed, critical for hot-plug and multi-supply sequencing |
| Schmitt-trigger inputs | Supports clean latching of noisy or slow-rising signals (e.g., mechanical switch debouncing, long traces) |
| Flow-through pinout | Minimizes PCB trace length and crosstalk: Dn and Qn aligned on opposite sides (e.g., D0/Pin3 ↔ Q0/Pin19) |
Applications
| Industrial Bus Interface | Microcontroller GPIO Expansion |
|---|---|
Use Scenario: Isolating and latching parallel address/data bus signals between a 3.3 V MCU and 5 V peripheral ASIC in programmable logic controllers. IC Role / Device Role / Timing Role: Acts as a synchronous 8-bit data latch with 3-state outputs, enabling bidirectional bus sharing and eliminating contention during read/write cycles. Use Value: 5.5 V input tolerance allows direct connection to 5 V bus lines; IOFF ensures safe disconnection during MCU reset without damaging downstream components. | Use Scenario: Expanding digital I/O count of a low-power ARM Cortex-M0+ microcontroller operating at 1.8 V, driving 3.3 V sensors and actuators. IC Role / Device Role / Timing Role: Provides buffered, edge-triggered output staging with independent OE control-used to drive multiple 3.3 V loads synchronously from a single clock domain. Use Value: 1.2 V minimum VCC supports ultra-low-power sleep modes; Schmitt-trigger inputs reject noise from long sensor cables. |
| Memory Address Latching | Mixed-Voltage Signal Translation |
Use Scenario: Capturing and holding 8-bit memory address lines in a retro-computing FPGA-based cartridge adapter for 8-bit CPUs running at 5 V. IC Role / Device Role / Timing Role: Functions as a transparent address latch synchronized to CPU RD/WR strobes, isolating FPGA logic from 5 V address bus transients. Use Value: Propagation delay ≤7 ns at 3.3 V ensures setup/hold compliance with 12 MHz Z80 timing; flow-through pinout simplifies PCB routing. | Use Scenario: Translating control signals between a 5 V FPGA configuration PROM and a 2.5 V CPLD in a reconfigurable logic subsystem. IC Role / Device Role / Timing Role: Performs unidirectional level shifting using 5 V-tolerant inputs and 2.5 V-compatible outputs, with OE used for direction control. Use Value: Guaranteed VIH/VIL thresholds across VCC range eliminate false triggering; no external bias resistors required. |
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 |
|---|---|---|---|
| SN74LVC574APWRE4 | TSSOP20 package (SOT360-1); identical electrical specs and pinout mapping | Better thermal performance and smaller footprint; requires finer-pitch PCB assembly | Select for space-constrained designs where SO20 footprint is unavailable or thermal dissipation must be optimized |
| 74LVC574APW,118 | Same TSSOP20 package as SN74LVC574APWRE4 but Nexperia-marked; identical parametrics | No functional difference; differs only in branding and distributor packaging | Prefer for supply chain continuity within Nexperia's portfolio and consistent qualification documentation |
Compared with SN74LVC574APWRE4 and 74LVC574APW,118, the 74LVC574ADB,118 offers proven SO20 mechanical compatibility with legacy 74-series sockets and simplified hand-soldering, while maintaining identical timing, voltage, and IOFF behavior-making it optimal for industrial upgrades and repair scenarios.
Availability
74LVC574ADB,118 is available at Aetrix Electronics and suitable for industrial automation, embedded control, and test equipment requiring stable component supply and long-term manufacturability.
Supply support for 74LVC574ADB,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 focused on high-volume, high-reliability logic, discrete, and MOSFET solutions for automotive, industrial, and consumer markets.
The 74LVC574A series belongs to Nexperia's advanced LVC logic family, designed specifically for low-voltage, mixed-signal interfacing with emphasis on robustness, power efficiency, and seamless integration across heterogeneous voltage domains.
FAQ
What is the maximum clock frequency supported by 74LVC574ADB,118?
The device supports up to 150 MHz at VCC = 3.3 V and −40 °C to +85 °C ambient, and 120 MHz over the full −40 °C to +125 °C range. This is derived from the maximum fmax specification in Table 7, which accounts for worst-case propagation delay and setup/hold timing margins under recommended operating conditions.
Can 74LVC574ADB,118 safely interface a 5 V microcontroller with a 1.8 V FPGA?
Yes - its inputs tolerate up to 5.5 V regardless of VCC, allowing direct connection to 5 V MCU outputs. When powered at 1.8 V, its outputs swing rail-to-rail (0 V to 1.8 V), matching FPGA I/O thresholds. OE control enables clean bus arbitration without level-shifter components.
Does 74LVC574ADB,118 require external pull-up or pull-down resistors on unused inputs?
No - all inputs feature Schmitt-trigger action and defined VIH/VIL thresholds across the full VCC range. Unused inputs should be tied HIGH or LOW per system logic requirements, but no external resistors are needed for noise immunity or DC biasing due to internal input structure and guaranteed switching points.
How does the IOFF function protect the device during power sequencing?
When VCC drops to 0 V, the IOFF circuitry automatically disables all outputs, forcing them into high-impedance state regardless of OE or CP state. This prevents reverse current flow from live 5 V buses into the unpowered IC, eliminating risk of latch-up or damage during hot-swap or asymmetric power-down sequences.
74LVC574ADB,118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74LVC
- Package/Case:
- 20-SSOP (0.209", 5.30mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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-SSOP
74LVC574ADB,118 FAQ
1.How can I place an order for 74LVC574ADB,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVC574ADB,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 74LVC574ADB,118 reliable?
The price and inventory of 74LVC574ADB,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVC574ADB,118 is usually 5 days.
3.What payment methods are accepted for 74LVC574ADB,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVC574ADB,118 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LVC574ADB,118?
74LVC574ADB,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVC574ADB,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 74LVC574ADB,118?
For technical support, including 74LVC574ADB,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVC574ADB,118 requirements.
6.How does Aetrix verify that 74LVC574ADB,118 is sourced from the original manufacturer or authorized distributors?
All 74LVC574ADB,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 74LVC574ADB,118 meets industry standards.
7.What is the process for return or replacement of 74LVC574ADB,118?
All 74LVC574ADB,118 units undergo pre-shipment inspection (PSI). If there is an issue with 74LVC574ADB,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 74LVC574ADB,118 part is unused and in its original packaging.
Return procedure for 74LVC574ADB,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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