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NXP Semiconductors 74LVTH574PW,118
- Part No.:
- 74LVTH574PW,118
- Manufacturer:
- NXP Semiconductors
- Category:
- Flip Flops
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
74LVTH574PW,118.pdf
- Description:
- IC FF D-TYPE SNGL 8BIT 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,241
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Product details
Overview
74LVTH574PW,118 from NXP Semiconductors is a 3.3 V octal D-type flip-flop with 3-state outputs, edge-triggered by a rising clock (CP), and independently controlled output enable (OE). It provides 8-bit registered data latching and bus-isolated output driving for microprocessor data buses, memory interfaces, and high-density logic systems. Key confirmed parameters: 3.3 V supply (2.7–3.6 V), 150 MHz max clock frequency, 3.6 ns typical tPLH/tPHL propagation delay at 3.3 V, and −40 °C to +85 °C operating range.
For engineers reviewing the 74LVTH574PW,118 datasheet, 74LVTH574PW,118 pinout, 74LVTH574PW,118 application, or 74LVTH574PW,118 equivalent, this device is selected for high-speed 3.3 V bus interfacing where latch timing integrity, 3-state bus contention control, TTL-level compatibility with 5 V systems, and bus-hold input stabilization are critical design requirements.
Technical Context
The 74LVTH574PW,118 implements eight independent D-type flip-flops, each capturing Dn input state on the LOW-to-HIGH transition of CP. Its dual-control architecture separates clocking (CP) from output gating (OE), enabling asynchronous 3-state management - outputs enter high-impedance OFF-state when OE is HIGH, regardless of CP activity or stored register state.
It features bus-hold circuitry on all D inputs (IBHH/IBHL ≥ ±75 µA at 3.0 V), eliminating external pull-ups for unused inputs, and supports live insertion/extraction. Input and output voltage tolerances extend to 5.5 V, allowing safe interfacing with legacy 5 V logic while powered from 3.3 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage (VCC) | 2.7 V to 3.6 V - ensures stable operation across industrial 3.3 V rail tolerances without overvoltage risk. |
| Max Clock Frequency (fmax) | 150 MHz - enables high-throughput data capture in fast microprocessor address/data latching applications. |
| Propagation Delay (tPLH/tPHL) | 3.6 ns typical at VCC = 3.3 V - guarantees sub-4 ns timing margin for synchronous bus handshaking at 100+ MHz. |
| Output Drive (IOL/IOH) | ±32 mA - sufficient to drive heavily loaded 3-state buses, MOS memories, or microprocessor data lines directly. |
| Bus-Hold Current (IBHH/IBHL) | ±75 µA to ±150 µA at 3.0 V - actively maintains valid logic states on floating D inputs, removing need for external bias resistors. |
| Operating Temperature | −40 °C to +85 °C - qualified for industrial-grade embedded control, communications infrastructure, and factory automation. |
| Input Voltage Tolerance | 0 V to 5.5 V - permits direct connection to 5 V CMOS/TTL outputs without level-shifting circuitry. |
Pinout & Package
TSSOP20 package (SOT360-1): plastic thin shrink small outline, 20 leads, body width 4.4 mm, 0.65 mm pitch, lead-free and RoHS compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OE) | Output Enable (active LOW) | Asynchronous global control for all 8 outputs; HIGH forces high-impedance OFF-state independent of clock or register state. |
| 2–9 (D0–D7) | Data Inputs | Edge-triggered D inputs with integrated bus-hold; retain last valid logic state when un-driven. |
| 10 (GND) | Ground Reference | 0 V reference for all internal logic and I/O; must be low-impedance for noise immunity and timing stability. |
| 11 (CP) | Clock Pulse Input | Rising-edge sensitive; samples Dn inputs one setup time before LOW-to-HIGH transition to update Qn outputs. |
| 12–19 (Q0–Q7) | Data Outputs | 3-state buffered outputs; reflect stored register values only when OE is LOW and remain high-Z otherwise. |
| 20 (VCC) | Supply Voltage | 3.3 V power rail; decoupling capacitor required near pin to suppress switching noise and ensure clean clock edges. |
Key Features
| Feature | Design Value |
|---|---|
| Bus-Hold Inputs | Eliminates external pull-up/pull-down resistors on D0–D7, reducing BOM count and PCB area in sparse-bus or test-point configurations. |
| 5 V-Tolerant I/O | Accepts 0–5.5 V input signals and drives 5 V buses safely under 3.3 V supply, enabling mixed-voltage system integration without translators. |
| Live Insertion Support | Withstands hot-plug events during system operation without latch-up or damage, suitable for modular backplane and field-replaceable unit designs. |
| Power-Up 3-State | Outputs default to high-impedance at power-on, preventing bus contention during boot sequence until firmware asserts OE. |
| Latch-Up Protection | JESD78 Class II (>500 mA) immunity ensures robustness against transient current injection in noisy industrial environments. |
Applications
| Microprocessor Data Bus Interface | Memory Address Latching |
|---|---|
Use Scenario: Interfacing a 32-bit microprocessor data bus to peripheral devices with slower access timing. IC Role / Device Role / Timing Role: Acts as an octal transparent latch to capture and hold processor data during read/write cycles, synchronized to CP and isolated via OE. Use Value: Enables reliable handshake between high-speed CPU and slower peripherals by decoupling timing domains and preventing bus contention during OE assertion. | Use Scenario: Stabilizing address lines between a microcontroller and parallel SRAM or Flash memory. IC Role / Device Role / Timing Role: Registers address bits on CP edge and holds them stable during memory access window, with OE used for chip-select isolation. Use Value: Guarantees address validity throughout full memory cycle, eliminating glitches that cause misreads or phantom writes in high-density memory subsystems. |
| Industrial I/O Expansion | Digital Signal Acquisition Buffer |
Use Scenario: Adding parallel digital I/O capability to a PLC or motion controller via backplane or ribbon cable. IC Role / Device Role / Timing Role: Provides registered input capture and 3-state output driving for multi-drop bus topologies, with bus-hold maintaining signal integrity on unterminated lines. Use Value: Reduces external termination components and improves noise margin in electrically harsh factory-floor environments with long trace runs. | Use Scenario: Capturing parallel outputs from ADCs or sensor arrays before serial transmission. IC Role / Device Role / Timing Role: Synchronizes asynchronous analog-to-digital conversion results into a deterministic clock domain using CP, then buffers via 3-state outputs for multiplexed readout. Use Value: Prevents metastability and timing skew across 8-bit channels, ensuring coherent sampling for real-time control loop inputs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal D-type flip-flop with 3-state output applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC574APWRE4 | Lower drive (±24 mA), no bus-hold, 1.65–3.6 V supply, 175 MHz fmax | Requires external pull-ups on unused inputs; better suited for ultra-low-power portable designs with tighter voltage margins. | Select when lower ICC and wider VCC range outweigh need for bus-hold and higher drive strength. |
| 74ALVCH162374PAG | 16-bit, dual-rail (1.65–3.6 V), no bus-hold, 200 MHz fmax, TSSOP48 | Higher channel count and speed but larger footprint; lacks bus-hold, requiring additional passives for floating inputs. | Choose for high-density board layouts needing two independent 8-bit registers in single package, accepting added complexity. |
Compared with SN74LVC574APWRE4 and 74ALVCH162374PAG, the 74LVTH574PW,118 uniquely combines 32 mA drive, integrated bus-hold, and 5 V-tolerant I/O in a compact TSSOP20 - making it optimal for industrial bus interface where robustness, component count reduction, and mixed-voltage interoperability are prioritized over minimal quiescent current or maximum bit density.
Availability
74LVTH574PW,118 is available at Aetrix Electronics and suitable for industrial control systems, communications equipment, and embedded data acquisition requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for 74LVTH574PW,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
NXP Semiconductors is a global semiconductor leader focused on secure connectivity solutions for automotive, industrial, and IoT applications, with deep expertise in high-performance logic and interface ICs.
The 74LVTH574PW,118 belongs to NXP's LVT/LVTH family of 3.3 V advanced logic devices, engineered specifically for high-speed, low-noise, mixed-voltage bus interfacing in industrial and telecom infrastructure.
FAQ
What is the recommended supply voltage range for the 74LVTH574PW,118?
The 74LVTH574PW,118 operates within a recommended supply voltage range of 2.7 V to 3.6 V. This range ensures full compliance with static and dynamic specifications including propagation delay, output drive, and bus-hold functionality. Operation below 2.7 V may degrade timing margins and output current capability, while exceeding 3.6 V violates absolute maximum ratings and risks permanent damage. The 74LVTH574PW,118 is not rated for 5 V supply.
Does the 74LVTH574PW,118 support live insertion and extraction?
Yes, the 74LVTH574PW,118 supports live insertion and extraction per its datasheet features. This capability is enabled by latch-up protection (JESD78 Class II >500 mA) and robust ESD immunity (HBM >2000 V), allowing safe hot-swap in modular backplane or field-replaceable unit applications. The 74LVTH574PW,118 maintains functional integrity during power sequencing transients common in such scenarios.
How does the bus-hold feature work on the 74LVTH574PW,118 inputs?
The 74LVTH574PW,118 integrates bus-hold circuitry on all D0–D7 inputs, providing ±75 µA to ±150 µA weak feedback current to maintain the last valid logic state when inputs float. This eliminates the need for external pull-up or pull-down resistors, reducing BOM cost and PCB space. The 74LVTH574PW,118 bus-hold operates across the full temperature range (−40 °C to +85 °C) and is active regardless of clock or OE state.
Can the 74LVTH574PW,118 interface directly with 5 V logic systems?
Yes, the 74LVTH574PW,118 supports 5 V-tolerant inputs and outputs: Dn and OE accept 0–5.5 V signals, and Qn outputs can drive 5 V buses safely under 3.3 V supply. This allows direct connection to legacy 5 V CMOS/TTL without level shifters. However, VCC must remain at 3.3 V; the 74LVTH574PW,118 is not designed for 5 V supply operation.
What is the function of the OE pin on the 74LVTH574PW,118?
The OE (Output Enable) pin on the 74LVTH574PW,118 is an active-LOW control that independently gates all eight 3-state outputs (Q0–Q7). When OE is LOW, outputs reflect the registered Qn values; when OE is HIGH, all outputs enter high-impedance OFF-state - regardless of CP activity or stored data. This enables bus sharing and prevents contention in multi-driver systems. The 74LVTH574PW,118 OE has no effect on internal register operation.
74LVTH574PW,118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- 74LVTH
- Package/Case:
- 20-TSSOP (0.173", 4.40mm 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:
- 150 MHz
- Max Propagation Delay @ V, Max CL:
- 5.9ns @ 3.3V, 50pF
- Trigger Type:
- Positive Edge
- Current - Output High, Low:
- 32mA, 64mA
- Voltage - Supply:
- 2.7V ~ 3.6V
- Current - Quiescent (Iq):
- 190 µA
- Input Capacitance:
- 4 pF
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TSSOP
74LVTH574PW,118 FAQ
1.How can I place an order for 74LVTH574PW,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVTH574PW,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 74LVTH574PW,118 reliable?
The price and inventory of 74LVTH574PW,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVTH574PW,118 is usually 5 days.
3.What payment methods are accepted for 74LVTH574PW,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVTH574PW,118 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LVTH574PW,118?
74LVTH574PW,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVTH574PW,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 74LVTH574PW,118?
For technical support, including 74LVTH574PW,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVTH574PW,118 requirements.
6.How does Aetrix verify that 74LVTH574PW,118 is sourced from the original manufacturer or authorized distributors?
All 74LVTH574PW,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 74LVTH574PW,118 meets industry standards.
7.What is the process for return or replacement of 74LVTH574PW,118?
All 74LVTH574PW,118 units undergo pre-shipment inspection (PSI). If there is an issue with 74LVTH574PW,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 74LVTH574PW,118 part is unused and in its original packaging.
Return procedure for 74LVTH574PW,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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