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Nexperia USA Inc. 74ALVC574D,118
- Part No.:
- 74ALVC574D,118
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Flip Flops
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
74ALVC574D,118.pdf
- Description:
- IC FF D-TYPE SNGL 8BIT 20SO
- Quantity:
- Payment:
- Shipping:
Inventory:3,313
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Product details
Overview
74ALVC574D,118 from Nexperia is an octal positive-edge-triggered D-type flip-flop with 3-state outputs, designed for data latching and bus interface in low-voltage digital systems. It operates from 1.65 V to 3.6 V, features IOFF partial power-down protection, Schmitt-trigger inputs for noise immunity, and supports -40 °C to +125 °C industrial temperature range - used in programmable logic controllers and industrial I/O expansion modules.
For engineers reviewing the 74ALVC574D,118 datasheet, 74ALVC574D,118 pinout, 74ALVC574D,118 application, or 74ALVC574D,118 equivalent, key selection considerations include its 3-state output control timing (ten ≤ 4.6 ns), IOFF-enabled system-level power sequencing, edge-triggered register behavior under mixed-voltage interfacing, and SO20 package compatibility with legacy PCB footprints.
Technical Context
This device implements eight independent D-type flip-flops synchronized on the LOW-to-HIGH transition of the CP input, with asynchronous 3-state control via active-low OE. Each flip-flop samples its D-input only at the clock edge, meeting set-up (tsu ≥ 0.8 ns) and hold (th ≥ 0.7 ns) requirements across full voltage/temperature range.
The IOFF circuit disables outputs when VCC = 0 V, blocking backflow current during partial power-down - critical for hot-swap and multi-rail systems. Schmitt-trigger inputs tolerate slow signal edges, enabling direct connection to mechanical switches or long traces without external conditioning.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.65 V to 3.6 V - enables interoperability with 1.8 V, 2.5 V, and 3.3 V logic domains without level shifters. |
| Propagation Delay (tpd) | ≤ 4.1 ns at VCC = 3.0–3.6 V - supports >150 MHz operation per flip-flop in high-speed data capture paths. |
| IOFF Leakage Current | ±80 μA max at VCC = 0 V - ensures safe isolation during power sequencing in multi-supply systems. |
| Input Thresholds (VIH/VIL) | VIL ≤ 0.8 V, VIH ≥ 2.0 V at VCC = 3.6 V - guarantees TTL-compatible input recognition with margin. |
| Output Drive Strength | ±24 mA at VCC = 3.0 V - drives standard 50 pF loads with <0.55 V VOL and >2.2 V VOH for robust noise immunity. |
| Operating Temperature | -40 °C to +125 °C - qualified for under-hood industrial and extended-temperature embedded control applications. |
| ESD Protection | HBM >2000 V, CDM >1000 V - withstands handling and board-level ESD events without latch-up or parametric shift. |
Pinout & Package
74ALVC574D,118 is supplied in SO20 (SOT163-1) plastic small outline package: 20-pin, 7.5 mm body width, 1.27 mm pitch, gull-wing leads. Pin 1 is marked by notch or bevel; pin 10 is GND, pin 20 is VCC.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OE) | Output Enable (active LOW) | Asynchronous 3-state control - HIGH forces outputs to high-impedance regardless of clock or data state. |
| 2–9 (D0–D7) | Data Inputs | Individual parallel data inputs sampled on rising CP edge; Schmitt-triggered for slow-edge tolerance. |
| 11 (CP) | Clock Input | Positive-edge-triggered master clock - all eight flip-flops update simultaneously on LOW-to-HIGH transition. |
| 12–19 (Q0–Q7) | 3-State Outputs | Registered outputs enabled only when OE = LOW; high-impedance otherwise - enables shared bus arbitration. |
| 10 (GND) | Ground Reference | 0 V reference for all internal logic and I/O; must be low-impedance connection for noise immunity. |
| 20 (VCC) | Supply Voltage | Primary power rail (1.65–3.6 V); powers core logic and IOFF circuitry - decoupling required near pin. |
Key Features
| Feature | Design Value |
|---|---|
| IOFF Partial Power-Down | Outputs automatically disabled when VCC = 0 V - prevents back-current flow in hot-plug or multi-rail shutdown scenarios. |
| Schmitt-Trigger Inputs | Hysteresis ≥ 0.3 V typical - rejects noise on slow-rising signals from sensors, switches, or long PCB traces without external RC. |
| Overvoltage-Tolerant Inputs | Accepts up to 3.6 V inputs even at VCC = 1.65 V - simplifies mixed-voltage interface design without translators. |
| Latch-Up Immunity | Exceeds 250 mA per JESD78 Class II.A - ensures robustness against transient overcurrent events in noisy environments. |
| Wide Temperature Range | Specified from -40 °C to +125 °C - validated for use in industrial motor drives, factory automation, and outdoor electronics. |
Applications
| Industrial PLC I/O Expansion | Automated Test Equipment (ATE) Pattern Memory |
|---|---|
|
Use Scenario: Latching sensor status or actuator commands across a 24 V isolated fieldbus interface using level-shifted control lines. IC Role / Device Role / Timing Role: Octal register holding parallel command bits synchronized to a system clock; OE enables/disables output drivers during bus arbitration. Use Value: Enables deterministic sampling of asynchronous field signals while maintaining clean 3-state bus release during reconfiguration cycles. |
Use Scenario: Storing and outputting test vectors to DUT pins under precise timing control in boundary-scan or functional test systems. IC Role / Device Role / Timing Role: Edge-triggered data latch providing glitch-free output updates aligned to pattern generator clock edges. Use Value: Delivers sub-5 ns propagation delay and tight skew (<0.5 ns typical) between Q outputs - critical for setup/hold compliance in high-speed ATE. |
| Embedded Microcontroller Bus Interface | Legacy System Logic Upgrade |
|
Use Scenario: Extending GPIO count of an ARM Cortex-M microcontroller to drive LED arrays, relays, or display segments via parallel bus. IC Role / Device Role / Timing Role: Synchronous output buffer with 3-state capability - allows multiple devices to share same data bus under MCU software control. Use Value: Low 1.65 V minimum supply enables direct interface with modern ultra-low-power MCUs; IOFF protects bus during MCU sleep modes. |
Use Scenario: Replacing obsolete 74LS574 in aging instrumentation hardware requiring drop-in compatibility and improved power efficiency. IC Role / Device Role / Timing Role: Pin- and function-compatible upgrade offering lower static current, wider voltage range, and enhanced ESD robustness. Use Value: Maintains identical SO20 footprint and logic behavior while reducing supply current by >95% versus LS family at 3.3 V operation. |
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 | TI part with identical pinout and function but tighter tpd spec (3.5 ns max at 3.3 V); higher ICC (10 μA vs 0.2 μA typical). | Preferred where maximum speed margin is required in 3.3 V systems; less suitable for battery-powered designs due to higher quiescent current. | Select when absolute minimum propagation delay is prioritized over ultra-low standby power. |
| 74LVCH16374ADGG | Nexperia 16-bit version in TSSOP48; double density, same voltage range and IOFF, but not pin-compatible. | Used when board space is constrained and higher channel count justifies redesign; requires layout change and updated firmware bit mapping. | Choose for new designs needing >8-bit parallel latching without stacking multiple 8-bit devices. |
Compared with SN74LVC574APWR, 74ALVC574D,118 offers superior power efficiency and broader temperature qualification; compared with 74LVCH16374ADGG, it provides immediate SO20 drop-in replacement capability without PCB revision.
Availability
74ALVC574D,118 is available at Aetrix Electronics and suitable for industrial automation, test equipment, and embedded microcontroller interface applications requiring stable component supply and long-term lifecycle support.
Supply support for 74ALVC574D,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, analog, and MOSFET solutions for automotive, industrial, and consumer markets.
The 74ALVC series delivers advanced low-voltage CMOS logic optimized for mixed-signal systems requiring robust noise immunity, low power, and seamless integration with both legacy and next-generation microcontrollers.
FAQ
Can 74ALVC574D,118 operate reliably at 1.65 V supply?
Yes - it is fully specified down to 1.65 V with guaranteed timing (tpd ≤ 6.4 ns), input thresholds (VIH ≥ 0.65 × VCC), and output drive (VOH ≥ 1.25 V at 6 mA). All static and dynamic parameters in Table 5 and Table 7 are validated across this range, including -40 °C to +125 °C operation.
What happens to outputs when OE is HIGH and VCC is powered down?
When OE is HIGH and VCC drops to 0 V, the IOFF circuit actively disables outputs, limiting OFF-state leakage to ±80 μA maximum. This prevents back-current flow into powered-down sections of the system - a key requirement for hot-swap and partial power-down architectures.
Is the SO20 package of 74ALVC574D,118 compatible with standard 74-series footprints?
Yes - SOT163-1 (SO20) has 1.27 mm lead pitch, 7.5 mm body width, and identical pin 1 location and numbering as legacy 74HC574 and 74LS574 SO20 packages. Mechanical dimensions in Figure 9 confirm full footprint compatibility for drop-in replacement without PCB modification.
Does 74ALVC574D,118 support mixed-voltage operation between inputs and VCC?
Yes - inputs tolerate up to 3.6 V regardless of VCC level (e.g., 3.3 V inputs accepted at VCC = 1.8 V), and output levels scale with VCC. This eliminates need for external level translators when interfacing with higher-voltage peripherals or legacy logic families.
74ALVC574D,118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74ALVC
- 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:
- 300 MHz
- Max Propagation Delay @ V, Max CL:
- 3.6ns @ 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:
- 3.5 pF
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SO
74ALVC574D,118 FAQ
1.How can I place an order for 74ALVC574D,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74ALVC574D,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 74ALVC574D,118 reliable?
The price and inventory of 74ALVC574D,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74ALVC574D,118 is usually 5 days.
3.What payment methods are accepted for 74ALVC574D,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74ALVC574D,118 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74ALVC574D,118?
74ALVC574D,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74ALVC574D,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 74ALVC574D,118?
For technical support, including 74ALVC574D,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74ALVC574D,118 requirements.
6.How does Aetrix verify that 74ALVC574D,118 is sourced from the original manufacturer or authorized distributors?
All 74ALVC574D,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 74ALVC574D,118 meets industry standards.
7.What is the process for return or replacement of 74ALVC574D,118?
All 74ALVC574D,118 units undergo pre-shipment inspection (PSI). If there is an issue with 74ALVC574D,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 74ALVC574D,118 part is unused and in its original packaging.
Return procedure for 74ALVC574D,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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