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NXP Semiconductors 74LV574PW,112
- Part No.:
- 74LV574PW,112
- Manufacturer:
- NXP Semiconductors
- Category:
- Flip Flops
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
74LV574PW,112.pdf
- Description:
- IC FF D-TYPE SNGL 8BIT 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,486
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Product details
Overview
74LV574PW,112 from NXP Semiconductors is an octal D-type flip-flop with positive-edge-triggered clock input (CP), non-inverting 3-state outputs, and a common output enable (OE) pin. It operates across 1.0 V to 5.5 V supply voltage, supports −40 °C to +125 °C ambient range, and stores eight parallel data bits on LOW-to-HIGH CP transitions for bus-holding and data latching in digital control systems.
For engineers reviewing the 74LV574PW,112 datasheet, 74LV574PW,112 pinout, 74LV574PW,112 application, or 74LV574PW,112 equivalent, this device serves as a low-voltage, high-speed register for microcontroller I/O expansion, address/data bus isolation, and synchronous data capture where precise timing, 3-state bus control, and TTL-level compatibility at 3.3 V are required.
Technical Context
The 74LV574PW,112 implements eight independent D-type flip-flops sharing one edge-sensitive clock (CP) and one active-low 3-state output enable (OE). Its Si-gate CMOS architecture ensures low power consumption and robust noise immunity while maintaining functional and pin compatibility with 74HC574 and 74HCT574 families.
Each flip-flop captures Dn input state meeting setup/hold time requirements (e.g., tsu = 13 ns, th = 5 ns at VCC = 3.3 V) on the rising edge of CP. OE controls output impedance independently - when HIGH, all Qn outputs enter high-impedance OFF-state without affecting internal latch states.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 1.0 V to 5.5 V - enables direct interface with 1.2 V, 1.8 V, 2.5 V, 3.3 V, and 5 V logic domains without level shifters. |
| Operating Temperature | −40 °C to +125 °C - qualified for under-hood automotive, industrial PLC, and extended-range embedded applications. |
| Propagation Delay | 13 ns typical (VCC = 3.3 V, CL = 15 pF) - supports >70 MHz maximum clock frequency for real-time data sampling and bus arbitration. |
| Output Drive | ±8 mA (VCC = 3.0 V), ±16 mA (VCC = 4.5 V) - sufficient to drive standard CMOS/TTL loads and moderate PCB trace capacitance. |
| Input Compatibility | TTL-level inputs supported at VCC = 2.7 V to 3.6 V - allows seamless integration with legacy 5 V systems using 3.3 V supplies. |
| Power Dissipation | CPD = 25 pF - enables accurate dynamic power estimation (PD = CPD × VCC² × fi × N) for thermal-aware system design. |
Pinout & Package
TSSOP20 package: plastic thin shrink small outline, 20 leads, 4.4 mm body width, 0.65 mm pitch, lead-free and RoHS compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OE) | Active-low output enable | Asserting LOW enables Q0–Q7 outputs; asserting HIGH places all outputs in high-impedance state - critical for shared bus arbitration. |
| 2–9 (D0–D7) | Data inputs | Independent parallel data lanes synchronized to CP rising edge - used for capturing parallel sensor data, ADC outputs, or MCU port expansion. |
| 10 (GND) | Ground reference | Primary return path for logic and switching currents; must be low-inductance connection to minimize ground bounce (<0.8 V typical at 3.3 V). |
| 11 (CP) | Clock input | Rising-edge-triggered global clock - all eight flip-flops sample Dn simultaneously, enabling coherent multi-bit latching. |
| 12–19 (Q0–Q7) | Non-inverting 3-state outputs | Drive external buses or downstream logic only when OE = LOW; high-Z state prevents contention during bus sharing. |
| 20 (VCC) | Supply voltage | Single-supply rail supporting wide voltage range - simplifies power architecture in mixed-voltage systems. |
Key Features
| Feature | Design Value |
|---|---|
| Wide supply range | 1.0 V to 5.5 V operation - eliminates need for separate voltage translators in heterogeneous logic systems. |
| 3-state bus interface | Common OE pin with no effect on internal latch states - enables clean bus release without disturbing stored data. |
| TTL input compatibility | Valid VIH/VIL thresholds at VCC = 2.7 V–3.6 V - permits direct connection to 5 V TTL outputs without external resistors or buffers. |
| High ESD tolerance | HBM >2000 V, MM >200 V - improves manufacturing yield and field reliability in handling-sensitive environments. |
| Industrial temperature grade | Specified from −40 °C to +125 °C - suitable for engine control units, motor drives, and outdoor industrial controllers. |
Applications
| Microcontroller I/O Expansion | Address/Data Bus Latching |
|---|---|
|
Use Scenario: Expanding limited GPIO count of an ARM Cortex-M0+ MCU to drive 8-channel LED matrix and 8-bit ADC interface. IC Role / Device Role / Timing Role: Acts as parallel input/output register synchronized to MCU's peripheral clock; captures ADC conversion results and drives LED column drivers. Use Value: Enables deterministic 8-bit parallel data transfer with 13 ns propagation delay and zero additional software overhead versus bit-banged I/O. |
Use Scenario: Isolating multiplexed address/data bus in an 8-bit microprocessor-based industrial HMI with external SRAM and display controller. IC Role / Device Role / Timing Role: Latches lower byte of address bus during ALE pulse to stabilize memory access timing and decouple processor from peripheral timing constraints. Use Value: Eliminates bus contention via 3-state outputs controlled by ALE-derived OE signal, ensuring reliable SRAM read/write cycles at 20 MHz. |
| Digital Signal Routing | Test Equipment Data Capture |
|
Use Scenario: Routing configurable logic signals between FPGA I/O banks and analog front-end modules in modular test instrumentation. IC Role / Device Role / Timing Role: Provides bidirectional, direction-controlled signal buffering with OE-driven bus isolation - used for reconfigurable signal path selection. Use Value: Supports glitch-free signal routing with <5 ns hold time margin and sub-15 ns propagation, critical for sub-100 ns timing windows. |
Use Scenario: Capturing parallel output from high-speed 8-bit comparator array in automated optical inspection equipment. IC Role / Device Role / Timing Role: Synchronizes asynchronous comparator outputs to system clock domain using CP edge-triggering, then presents latched result to FPGA via 3-state bus. Use Value: Guarantees metastability-free sampling with 13 ns setup time at 3.3 V, enabling reliable 70 MSPS data acquisition without external synchronizers. |
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 |
|---|---|---|---|
| 74LVC574PW,112 | Lower ICC (max 10 µA vs. 160 µA), faster tpd (10 ns @ 3.3 V), but narrower VCC range (1.65–3.6 V) | Better suited for ultra-low-power battery-operated devices; not usable in 5 V or 1.2 V systems | Select when power budget is constrained and supply is strictly 1.8 V or 3.3 V. |
| SN74LV574APWRE4 | Same electrical specs, identical pinout, but TI packaging (TSSOP-20, green RoHS) and different tape/reel orientation | No functional difference; validated for drop-in replacement in existing NXP designs with same layout | Choose for dual-sourcing flexibility or regional availability preference without redesign. |
Compared with 74LV574PW,112, the 74LVC574PW,112 offers superior power efficiency at the cost of supply voltage flexibility, while the SN74LV574APWRE4 provides identical functionality with alternate logistics support - both require no schematic or layout changes.
Availability
74LV574PW,112 is available at Aetrix Electronics and suitable for microcontroller I/O expansion, address/data bus latching, and digital signal routing requiring stable component supply across automotive, industrial automation, and test equipment programs.
Supply support for 74LV574PW,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
NXP Semiconductors is a global semiconductor company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT applications.
The 74LV574PW,112 belongs to NXP's LV logic family, designed specifically for low-voltage, high-noise-immunity digital interfacing in space-constrained and thermally demanding environments.
FAQ
What is the minimum supply voltage required for reliable operation of the 74LV574PW,112?
The 74LV574PW,112 is guaranteed to function down to 1.0 V supply voltage, with static characteristics specified from 1.2 V. At VCC = 1.0 V, input levels are interpreted as GND (LOW) or VCC (HIGH), enabling compatibility with emerging ultra-low-power systems where other logic families fail.
Does the 74LV574PW,112 support 5 V TTL inputs when powered at 3.3 V?
Yes, the 74LV574PW,112 accepts TTL input levels when VCC is between 2.7 V and 3.6 V - VIH is defined as 2.0 V min and VIL as 0.8 V max under those conditions, ensuring robust recognition of standard 5 V TTL output swings without external level-shifting circuitry.
How does the output enable (OE) pin affect internal flip-flop states in the 74LV574PW,112?
The OE pin has no effect on the internal flip-flop states of the 74LV574PW,112. When OE is HIGH, outputs Q0–Q7 go to high-impedance OFF-state while stored data remains intact and unaffected - allowing safe bus sharing without data corruption or re-latching requirements.
What is the maximum clock frequency supported by the 74LV574PW,112 at 3.3 V supply?
At VCC = 3.3 V and CL = 15 pF, the 74LV574PW,112 supports a maximum clock frequency of 70 MHz (typical), with fmax = 24 MHz (min) over the full −40 °C to +125 °C temperature range - verified by propagation delay (tpd = 13 ns typ) and pulse width (tW = 20 ns min) specifications.
Is the 74LV574PW,112 pin-compatible with the 74HC574 and 74HCT574?
Yes, the 74LV574PW,112 is explicitly stated as pin and functionally compatible with the 74HC574 and 74HCT574. All three share identical TSSOP20 pinout, logic symbol, and functional behavior - enabling direct substitution in existing designs where lower supply voltage or improved noise margin is needed.
74LV574PW,112 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- 74LV
- Package/Case:
- 20-TSSOP (0.173", 4.40mm 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:
- 70 MHz
- Max Propagation Delay @ V, Max CL:
- 17ns @ 5V, 50pF
- Trigger Type:
- Positive Edge
- Current - Output High, Low:
- 16mA, 16mA
- Voltage - Supply:
- 1V ~ 5.5V
- Current - Quiescent (Iq):
- 160 µA
- Input Capacitance:
- 3.5 pF
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TSSOP
74LV574PW,112 FAQ
1.How can I place an order for 74LV574PW,112 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LV574PW,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 74LV574PW,112 reliable?
The price and inventory of 74LV574PW,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LV574PW,112 is usually 5 days.
3.What payment methods are accepted for 74LV574PW,112?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LV574PW,112 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LV574PW,112?
74LV574PW,112 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LV574PW,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 74LV574PW,112?
For technical support, including 74LV574PW,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LV574PW,112 requirements.
6.How does Aetrix verify that 74LV574PW,112 is sourced from the original manufacturer or authorized distributors?
All 74LV574PW,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 74LV574PW,112 meets industry standards.
7.What is the process for return or replacement of 74LV574PW,112?
All 74LV574PW,112 units undergo pre-shipment inspection (PSI). If there is an issue with 74LV574PW,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 74LV574PW,112 part is unused and in its original packaging.
Return procedure for 74LV574PW,112:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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