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Nexperia USA Inc. 74LVC574ADB,112
- Part No.:
- 74LVC574ADB,112
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Flip Flops
- Package:
- 20-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
74LVC574ADB,112.pdf
- Description:
- IC FF D-TYPE SNGL 8BIT 20SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,398
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Product details
Overview
74LVC574ADB,112 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 peripherals.
For engineers reviewing the 74LVC574ADB,112 datasheet, 74LVC574ADB,112 pinout, 74LVC574ADB,112 application, or 74LVC574ADB,112 equivalent, key selection criteria include 3-state timing (enable/disable delays), 5 V tolerance on all I/O pins, IOFF leakage performance at VCC = 0 V, and guaranteed operation across -40 °C to +125 °C.
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. The IOFF circuit actively disables outputs when VCC = 0 V, preventing backflow current during partial power-down sequences.
Schmitt-trigger inputs provide hysteresis (typ. 0.3 V) for robust handling of slow-rising signals, while the flow-through pinout minimizes PCB trace length between D and Q pins. JEDEC-compliant voltage ranges (JESD8-7A/5A/C) ensure interoperability with legacy TTL and modern low-voltage logic families.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.2 V to 3.6 V - Enables direct interface with 1.8 V, 2.5 V, and 3.3 V logic domains |
| Input Voltage Tolerance | Up to 5.5 V - Allows safe connection to 5 V buses without external level shifters |
| Propagation Delay (tpd) | 1.5 ns (min) to 9.0 ns (max) at VCC = 3.0–3.6 V - Supports >120 MHz clock rates in high-speed data capture |
| IOFF Leakage Current | ±10 μA max at VCC = 0 V - Ensures <100 nW standby power in hot-swap or partial-power-down systems |
| Operating Temperature | -40 °C to +125 °C - Qualified for under-hood automotive modules and industrial motor drives |
| ESD Protection | HBM >2000 V, CDM >1000 V - Reduces need for external ESD protection in board-level designs |
| Output Drive Strength | ±24 mA at VCC = 3.0 V - Drives 15 pF loads with <9 ns transition times into standard CMOS/TTL fanouts |
Pinout & Package
74LVC574ADB,112 is supplied in SOT339-1 (SSOP20) package: plastic shrink small outline package, 20 leads, body width 5.3 mm, pitch 0.65 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OE) | Output enable input | Active LOW control for simultaneous 3-state output disable; does not affect internal latch state |
| 2–9 (D0–D7) | Data inputs | Asynchronous inputs sampled on CP rising edge; tolerate up to 5.5 V regardless of VCC |
| 10 (GND) | Ground reference | 0 V return path for all internal logic and I/O circuits |
| 11 (CP) | Positive-edge clock | LOW-to-HIGH transition triggers synchronous capture of Dn inputs into respective flip-flops |
| 12–19 (Q0–Q7) | Data outputs | Registered outputs with 3-state capability; maintain 5 V tolerance and drive strength in HIGH/LOW states |
| 20 (VCC) | Supply voltage | Primary power rail (1.2–3.6 V); powers core logic and output buffers |
Key Features
| Feature | Design Value |
|---|---|
| 5 V tolerant I/O | Enables direct interfacing with legacy 5 V microcontrollers and peripherals without external translators |
| IOFF partial power-down | Prevents destructive back-current flow when VCC is unpowered but I/O lines remain active |
| Schmitt-trigger inputs | Provides 0.3 V typical hysteresis to reject noise on slow-rising control or data lines |
| Flow-through pinout | Minimizes signal routing congestion by aligning Dn and Qn pins on opposite sides of package |
| JEDEC-compliant voltage ranges | Guarantees interoperability with JESD8-7A (1.65–1.95 V), JESD8-5A (2.3–2.7 V), and JESD8-C (2.7–3.6 V) logic families |
Applications
| Industrial PLC I/O Expansion | Automotive Body Control Module |
|---|---|
Use Scenario: Latching sensor status (door open/closed, seatbelt fastened) before CAN message framing. IC Role / Device Role / Timing Role: Octal register capturing parallel switch inputs synchronously to system clock edge; 3-state outputs isolate latched data from shared diagnostic bus. Use Value: Eliminates metastability risk via setup/hold compliance (tsu = 2.0 ns, th = +1.5 ns at VCC = 3.3 V) and enables hot-swap-safe isolation using IOFF. | Use Scenario: Buffering PWM dimming signals from MCU to LED driver ICs across varying supply domains. IC Role / Device Role / Timing Role: Level-translating register holding 8-bit brightness values; 5 V tolerant outputs drive legacy LED drivers powered from 5 V rails. Use Value: Removes need for discrete level shifters while maintaining <9 ns propagation delay for real-time dimming updates. |
| Test Equipment Digital Pattern Generator | Medical Imaging Data Acquisition |
Use Scenario: Capturing parallel ADC output words prior to serialization for FPGA-based waveform processing. IC Role / Device Role / Timing Role: High-speed octal latch synchronizing 8-bit digital samples to test clock; 3-state outputs allow multiplexing multiple channels onto shared data bus. Use Value: Achieves 120 MHz maximum clock frequency at VCC = 3.3 V, supporting >100 MSPS sampling throughput per channel. | Use Scenario: Isolating radiation-hardened FPGA configuration data from peripheral sensors during X-ray exposure cycles. IC Role / Device Role / Timing Role: Registered buffer decoupling sensor interface from reconfigurable logic; IOFF ensures zero leakage current when FPGA is powered down mid-exposure. Use Value: Prevents data corruption from backfeed currents during partial power cycling, meeting IEC 62304 Class C safety requirements. |
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 and pinout | Higher thermal resistance (10.0 mW/K derating above 100 °C vs. SSOP's 9.5 mW/K) | Select for higher-density PCB layouts where SSOP20 footprint is unavailable |
| 74LVC574APW,118 | Same TSSOP20 package; identical functional spec; different reel packaging (118 vs. 112) | No functional difference; only logistics distinction (reel size, quantity per reel) | Choose based on procurement volume and assembly line feeder compatibility |
Compared with SN74LVC574APWR and 74LVC574APW,118, the 74LVC574ADB,112 offers superior thermal performance in SSOP20 form factor and is optimized for space-constrained industrial boards requiring robust 5 V tolerance and IOFF protection - making it preferred for high-reliability, mixed-voltage latching where thermal margin matters.
Availability
74LVC574ADB,112 is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, automotive body control modules, test equipment digital pattern generation, and medical imaging data acquisition requiring stable component supply across extended temperature ranges.
Supply support for 74LVC574ADB,112 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 74LVC series delivers advanced low-voltage CMOS logic with 5 V tolerant I/O and partial power-down capability, designed specifically for mixed-supply system interfacing and energy-efficient embedded control.
FAQ
What is the maximum clock frequency supported by 74LVC574ADB,112?
The device supports up to 150 MHz at VCC = 3.0–3.6 V and -40 °C to +85 °C ambient, and 120 MHz across its full -40 °C to +125 °C operating range. This is verified by fmax testing in Table 7 of the datasheet, with propagation delay tpd ≤ 9.0 ns under worst-case conditions.
Does 74LVC574ADB,112 require external pull-up resistors on OE or CP pins?
No. OE and CP inputs have no internal pull-up or pull-down; they must be actively driven to defined logic levels. The datasheet specifies VIH ≥ 2.0 V and VIL ≤ 0.8 V at VCC = 3.3 V, and recommends direct connection to MCU GPIO or dedicated control logic to avoid floating states.
Can 74LVC574ADB,112 safely interface with a 5 V microcontroller while powered from 3.3 V?
Yes. All inputs (including CP and OE) and outputs tolerate up to 5.5 V regardless of VCC level. When VCC = 3.3 V, VOH ≥ 2.2 V (at IO = -24 mA) and VOL ≤ 0.55 V (at IO = 24 mA), ensuring reliable TTL/CMOS-compatible signaling with 5 V devices.
How does the IOFF feature behave during power sequencing?
When VCC drops to 0 V, the IOFF circuit automatically places all outputs in high-impedance state, limiting back-current to ±10 μA (max) even if 5 V signals remain present on Qn pins. This behavior is characterized in Table 9 and enables safe hot-plug operation in modular systems.
74LVC574ADB,112 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74LVC
- Package/Case:
- 20-SSOP (0.209", 5.30mm Width)
- Packaging:
- Tube
- 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,112 FAQ
1.How can I place an order for 74LVC574ADB,112 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVC574ADB,112 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,112 reliable?
The price and inventory of 74LVC574ADB,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVC574ADB,112 is usually 5 days.
3.What payment methods are accepted for 74LVC574ADB,112?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVC574ADB,112 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LVC574ADB,112?
74LVC574ADB,112 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVC574ADB,112 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,112?
For technical support, including 74LVC574ADB,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVC574ADB,112 requirements.
6.How does Aetrix verify that 74LVC574ADB,112 is sourced from the original manufacturer or authorized distributors?
All 74LVC574ADB,112 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,112 meets industry standards.
7.What is the process for return or replacement of 74LVC574ADB,112?
All 74LVC574ADB,112 units undergo pre-shipment inspection (PSI). If there is an issue with 74LVC574ADB,112, 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,112 part is unused and in its original packaging.
Return procedure for 74LVC574ADB,112:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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