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NXP Semiconductors 74LVTH574PW,112
- Part No.:
- 74LVTH574PW,112
- Manufacturer:
- NXP Semiconductors
- Category:
- Flip Flops
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
74LVTH574PW,112.pdf
- Description:
- IC FF D-TYPE SNGL 8BIT 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,621
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Product details
Overview
74LVTH574PW,112 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, with TTL-compatible input/output levels and bus hold on all data inputs. Designed for high-speed digital systems operating from −40 °C to +85 °C.
For engineers reviewing the 74LVTH574PW,112 datasheet, 74LVTH574PW,112 pinout, 74LVTH574PW,112 application, or 74LVTH574PW,112 equivalent, key selection criteria include 3.3 V supply compatibility, 150 MHz maximum clock frequency, 3-state bus interface capability, bus hold functionality eliminating external pull-ups, and TSSOP20 packaging for space-constrained PCB layouts.
Technical Context
This device implements eight independent D-type flip-flops synchronized to the rising edge of CP, each capturing the state of its Dn input one setup time before the clock transition. The outputs are gated through a common active-low OE signal that places all Qn pins in high-impedance mode regardless of clock activity.
It features bus hold circuitry on all eight Dn inputs (IBHL = 75–150 µA at VCC = 3.0 V), enabling stable logic states on unused or floating data lines without external resistors. Input and output voltage thresholds support interfacing with both 3.3 V and 5 V systems, with VIH ≥ 2.0 V and VIL ≤ 0.8 V under recommended conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage (VCC) | 2.7 V to 3.6 V - ensures robust operation across industrial-grade 3.3 V rail tolerances. |
| Max Clock Frequency (fmax) | 150 MHz - supports high-throughput data capture in fast microprocessor or memory bus applications. |
| Propagation Delay (tPLH/tPHL) | 1.7–5.9 ns - enables sub-6 ns timing margins for synchronous system design at 100+ MHz. |
| Output Drive (IOL/IOH) | ±32 mA - sufficient to drive heavily loaded 3-state buses, MOS memories, or microprocessor data lines. |
| Bus Hold Current (IBHL/IBHH) | ±75 to ±150 µA - maintains valid logic states on unconnected Dn inputs without external pull-up/down components. |
| Operating Temperature | −40 °C to +85 °C - qualified for industrial ambient environments without derating. |
| Input Compatibility | TTL-level switching - allows direct connection to legacy 5 V logic families while powered from 3.3 V. |
Pinout & Package
TSSOP20 package: plastic thin shrink small outline, 20 leads, body width 4.4 mm (SOT360-1), lead pitch 0.65 mm, exposed pad not electrically connected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OE) | Active-low output enable | Controls all eight 3-state outputs simultaneously; LOW enables Qn, HIGH forces high-impedance OFF-state. |
| 2–9 (D0–D7) | Data inputs | Asynchronous inputs with bus hold; latch on rising CP edge after setup time (2.0 ns min at VCC = 3.3 V). |
| 10 (GND) | Ground reference | 0 V return path for all internal logic and output drivers; must be low-impedance for noise immunity. |
| 11 (CP) | Clock input | Rising-edge triggered; minimum pulse width 3.3 ns; input transition rate ≤10 ns/V for reliable operation. |
| 12–19 (Q0–Q7) | Registered outputs | 3-state buffered outputs reflecting Dn state captured at prior CP edge; high-impedance when OE = HIGH. |
| 20 (VCC) | Supply voltage | 3.3 V nominal power rail; decoupling capacitor required near pin for transient current handling. |
Key Features
| Feature | Design Value |
|---|---|
| Bus hold on all D inputs | Eliminates need for external pull-up resistors on unused or unterminated data lines, reducing BOM count and layout complexity. |
| Live insertion/extraction support | Enables hot-swap capability in backplane or modular systems without damaging the device or bus. |
| Power-up 3-state and reset | Outputs remain in high-impedance state until VCC stabilizes, preventing bus contention during power sequencing. |
| Latch-up protection (JESD78 Class II) | Withstands >500 mA latch-up current, ensuring reliability in noisy industrial environments with ground bounce or ESD events. |
| 5 V tolerant inputs/outputs | Allows safe interfacing with 5 V systems while operating from 3.3 V supply, simplifying mixed-voltage board design. |
Applications
| Microprocessor Data Bus Interface | Memory Address/Data Latching |
|---|---|
Use Scenario: Interfacing an FPGA or ASIC to a legacy 8-bit microprocessor data bus requiring registered handshaking. IC Role / Device Role / Timing Role: Acts as a bidirectional, clock-synchronized data register with 3-state control to isolate bus segments during read/write cycles. Use Value: Enables clean timing alignment between asynchronous logic domains while preventing bus contention via OE-controlled isolation. | Use Scenario: Capturing address or data signals from a high-speed controller before routing to SRAM or flash memory. IC Role / Device Role / Timing Role: Provides edge-triggered storage with precise setup/hold timing (tsu = 2.0 ns, th = 0.3 ns) to meet memory access timing windows. Use Value: Guarantees valid data sampling at up to 150 MHz, supporting burst-mode memory transfers without timing violations. |
| Industrial I/O Expansion Module | Test Equipment Digital Pattern Generator |
Use Scenario: Adding isolated, latched digital I/O channels to a PLC or motion controller using shared backplane wiring. IC Role / Device Role / Timing Role: Serves as an output latch with bus hold, maintaining output state during communication gaps or firmware updates. Use Value: Prevents spurious actuation of field devices during reconfiguration due to floating outputs or bus glitches. | Use Scenario: Generating repeatable, synchronized digital stimulus waveforms for IC functional testing or board-level validation. IC Role / Device Role / Timing Role: Functions as a programmable pattern register clocked by test sequencer, with OE enabling waveform gating. Use Value: Delivers sub-6 ns propagation delay and 3-state control for precise edge placement and channel isolation in multi-pin testers. |
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 |
|---|---|---|---|
| SN74LVC574APW | Lower drive strength (±24 mA), no bus hold, 1.65–3.6 V VCC range, same TSSOP20 footprint. | Suitable for lower-load buses; requires external pull-ups if inputs float; better for ultra-low-voltage designs. | Select when cost sensitivity outweighs bus hold requirement and load current < 24 mA. |
| 74ALVCH162244DGGR | 16-bit, non-latching 3-state buffer (no flip-flop function), different pinout, higher drive (±24 mA per channel). | Used for level translation or fanout only-lacks clocked registration; not drop-in replaceable. | Choose only when latching is unnecessary and higher channel count is needed for parallel data paths. |
Compared with SN74LVC574APW and 74ALVCH162244DGGR, the 74LVTH574PW,112 uniquely combines bus hold, 32 mA drive, and true edge-triggered latching in TSSOP20-making it optimal for robust, high-speed microprocessor bus interfaces where input stability and output drive are critical.
Availability
74LVTH574PW,112 is available at Aetrix Electronics and suitable for industrial control systems, test equipment design, and embedded microprocessor interface applications requiring stable component supply and long-term manufacturability.
Supply support for 74LVTH574PW,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 specializing in secure connectivity solutions for automotive, industrial, and IoT applications, with leadership in logic, interface, and power management ICs.
The 74LVTH574PW,112 belongs to NXP's high-performance LVT/LVTH logic family, designed specifically for 3.3 V systems requiring TTL-compatible signaling, bus isolation, and robust operation in industrial temperature ranges.
FAQ
What is the maximum clock frequency supported by the 74LVTH574PW,112?
The 74LVTH574PW,112 supports a maximum clock frequency of 150 MHz under recommended operating conditions (VCC = 3.0 V to 3.6 V). This value is specified in Table 7 of the NXP datasheet and reflects guaranteed timing performance across the full −40 °C to +85 °C temperature range without derating.
Does the 74LVTH574PW,112 have bus hold functionality, and how does it affect system design?
Yes, the 74LVTH574PW,112 includes bus hold circuitry on all eight Dn inputs (IBHL = 75–150 µA at VCC = 3.0 V). This eliminates the need for external pull-up resistors on unused or unterminated data lines, reducing component count, PCB area, and potential signal integrity issues caused by resistor parasitics.
Can the 74LVTH574PW,112 interface safely with 5 V logic systems?
Yes, the 74LVTH574PW,112 features 5 V tolerant inputs and outputs. Its VI and VO ratings extend to +7.0 V (Table 4), and its VIH/VIL thresholds (≥2.0 V / ≤0.8 V) align with TTL logic levels-enabling direct connection to 5 V microcontrollers or peripherals while operating from a 3.3 V supply.
What is the purpose of the active-low OE pin on the 74LVTH574PW,112?
The OE (output enable) pin on the 74LVTH574PW,112 is an active-low control that independently gates all eight 3-state outputs. When OE = LOW, Qn outputs reflect the latched Dn values; when OE = HIGH, all Qn pins enter high-impedance mode-allowing multiple devices to share a common bus without contention.
Is the 74LVTH574PW,112 pin-compatible with other members of the 74LVT/LVTH574 family?
Yes, the 74LVTH574PW,112 shares identical pinout and functionality with all variants in the 74LVT574/74LVTH574 family-including 74LVT574PW, 74LVTH574D, and 74LVTH574DB-as confirmed in Table 1 (Ordering Information) and Figure 4 (Pin configuration for TSSOP20). Only package type and thermal characteristics differ across variants.
74LVTH574PW,112 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- 74LVTH
- 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:
- 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,112 FAQ
1.How can I place an order for 74LVTH574PW,112 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVTH574PW,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 74LVTH574PW,112 reliable?
The price and inventory of 74LVTH574PW,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVTH574PW,112 is usually 5 days.
3.What payment methods are accepted for 74LVTH574PW,112?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVTH574PW,112 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LVTH574PW,112?
74LVTH574PW,112 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVTH574PW,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 74LVTH574PW,112?
For technical support, including 74LVTH574PW,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVTH574PW,112 requirements.
6.How does Aetrix verify that 74LVTH574PW,112 is sourced from the original manufacturer or authorized distributors?
All 74LVTH574PW,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 74LVTH574PW,112 meets industry standards.
7.What is the process for return or replacement of 74LVTH574PW,112?
All 74LVTH574PW,112 units undergo pre-shipment inspection (PSI). If there is an issue with 74LVTH574PW,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 74LVTH574PW,112 part is unused and in its original packaging.
Return procedure for 74LVTH574PW,112:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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