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NXP Semiconductors 74LVT534D,112
- Part No.:
- 74LVT534D,112
- Manufacturer:
- NXP Semiconductors
- Category:
- Flip Flops
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
74LVT534D,112.pdf
- Description:
- IC FF D-TYPE SNGL 8BIT 20SO
- Quantity:
- Payment:
- Shipping:
Inventory:1,520
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Product details
Overview
74LVT534D,112 from NXP Semiconductors (formerly Philips) is a 3.3 V octal D-type inverting flip-flop with 3-State outputs, edge-triggered by rising clock, and featuring bus-hold inputs for unused pins. It delivers 3.0 ns typical tPLH propagation delay at 3.3 V, supports 5 V-tolerant I/O, and operates across –40 °C to +85 °C in a 20-pin SO package.
For engineers reviewing the 74LVT534D,112 datasheet, 74LVT534D,112 pinout, 74LVT534D,112 application, or 74LVT534D,112 equivalent, this device serves as a high-speed, low-voltage bus interface register for memory address latching, data buffering in mixed-voltage systems, and synchronous control of 3-State buses in industrial and telecom backplanes.
Technical Context
The 74LVT534D,112 implements eight independent D-type flip-flops with inverting outputs, each synchronized to the rising edge of CP. Its dual-control architecture separates clocking (CP) from output enable (OE), allowing data latching and bus release to be decoupled.
It uses BiCMOS technology to achieve TTL-compatible input thresholds (VIL ≤ 0.8 V, VIH ≥ 2.0 V) while operating from a 3.3 V supply, and integrates bus-hold circuitry on all D inputs-eliminating external pull-ups and ensuring stable logic states on floating inputs without additional components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Supply | 2.7 V to 3.6 V - Enables direct integration into 3.3 V logic domains with ±0.3 V margin for rail tolerance. |
| tPLH / tPHL | 3.0 / 3.5 ns (typ @ CL = 50 pF) - Supports >100 MHz clock operation in high-speed data paths. |
| IOL / IOH | 64 mA / –32 mA - Drives heavy capacitive loads and standard TTL/CMOS inputs without external buffers. |
| VI Input Range | 0 V to 5.5 V - Allows safe interfacing with 5 V systems without level shifters or clamping diodes. |
| Bus-Hold Current | ±75 µA to ±150 µA - Actively holds unconnected D inputs at valid logic levels, preventing metastability. |
| ICCZ Quiescent Current | 0.13 mA (typ @ VCC = 3.6 V, outputs disabled) - Minimizes standby power in idle bus-hold mode. |
| Power-Up State | 3-State outputs and reset - Ensures high-impedance default on power ramp, avoiding bus contention. |
Pinout & Package
74LVT534D,112 is housed in a 20-pin plastic Small Outline (SO) package per SOT163-1, 7.5 mm body width, surface-mount compatible with JEDEC MS-013 standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OE (active-LOW) | Global 3-State enable: LOW enables Q0–Q7 outputs; HIGH places all outputs in high-Z. |
| 2,5,6,9,12,15,16,19 | Q0–Q7 (inverting) | Complementary registered outputs - Qn = NOT(Dn at previous CP↑); driven only when OE = LOW. |
| 3,4,7,8,13,14,17,18 | D0–D7 | Data inputs with integrated bus-hold - retain last valid state if left unconnected. |
| 11 | CP | Rising-edge clock - samples Dn one setup time before CP↑ and updates Qn on that edge. |
| 10 | GND | Reference ground for all internal logic and I/O structures. |
| 20 | VCC | 3.3 V core supply - powers BiCMOS logic; must be decoupled locally per high-speed layout practice. |
Key Features
| Feature | Design Value |
|---|---|
| 3-State outputs with common OE | Enables bidirectional or shared-bus topology without external tri-state logic or arbitration circuitry. |
| 5 V-tolerant inputs and outputs | Interoperates directly with legacy 5 V logic families (e.g., 74LS, 74ALS) without voltage translation. |
| Integrated bus-hold on all D inputs | Removes need for 10 kΩ pull-up/down resistors on unused data lines, reducing BOM count and board area. |
| Live insertion/extraction support | Withstands hot-plug events in backplane systems - no latch-up or damage during partial power sequencing. |
| Power-up 3-State and reset | Guarantees outputs remain high-Z until VCC stabilizes above 1.2 V, preventing bus glitches at power-on. |
Applications
| Memory Address Latching | Industrial Backplane Data Buffering |
|---|---|
|
Use Scenario: Capturing and holding microprocessor address bus signals for static RAM or EPROM access cycles. IC Role / Device Role / Timing Role: Edge-triggered register synchronizing asynchronous address strobes to system clock domain; inverting outputs match inverted address decode logic. Use Value: Eliminates timing skew between address bits and ensures deterministic setup/hold margins for parallel memory interfaces. |
Use Scenario: Isolating and regenerating control/data signals across modular PLC I/O racks with mixed 3.3 V and 5 V subsystems. IC Role / Device Role / Timing Role: Bus interface register providing level-tolerant, 3-State-controlled signal transfer between controller and field modules. Use Value: Prevents cross-talk and contention on shared backplane buses while supporting hot-swap maintenance. |
| Telecom Line Card Timing Interface | Test Equipment Pattern Generation |
|
Use Scenario: Synchronizing configuration data from FPGA to multiple line interface units (LIUs) in TDM-based access equipment. IC Role / Device Role / Timing Role: Clock-domain crossing register with inverting outputs driving differential line drivers via external inverters. Use Value: Provides deterministic edge-aligned data delivery with sub-4 ns propagation, meeting tight jitter budgets for E1/T1 framing. |
Use Scenario: Generating repeatable digital stimulus waveforms in automated test equipment (ATE) pattern generators. IC Role / Device Role / Timing Role: High-speed data register staging parallel test vectors under precise clock control; 3-State outputs allow multiplexed waveform routing. Use Value: Enables glitch-free vector switching at >100 MHz rates with bus-hold stability during pattern transitions. |
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 | Non-inverting outputs; 1.65–3.6 V VCC range; no bus-hold; lower drive (24 mA). | Requires external pull-ups for unused inputs; suited for low-power portable designs where inversion is not needed. | Select when non-inverting logic flow is required and bus-hold is managed externally or unnecessary. |
| 74ALVT16374DGGR | 16-bit, non-inverting, 3.3 V only; higher speed (tPD = 2.3 ns); no 5 V tolerance; no bus-hold. | Targeted at high-density, high-speed bus interfaces in telecom ASIC support; requires level-shifting for 5 V systems. | Choose for wider bus width and tighter timing budgets where 5 V compatibility is not required. |
Compared with SN74LVC574APWR and 74ALVT16374DGGR, the 74LVT534D,112 uniquely combines inverting outputs, 5 V-tolerant I/O, integrated bus-hold, and guaranteed power-up 3-State - making it optimal for legacy-system upgrades and mixed-voltage industrial backplanes where signal polarity and robustness are critical.
Availability
74LVT534D,112 is available at Aetrix Electronics and suitable for industrial automation controllers, telecom line cards, and test equipment requiring stable component supply, long-term lifecycle support, and consistent parametric performance across temperature extremes.
Supply support for 74LVT534D,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 leader delivering high-performance analog, logic, and interface solutions for automotive, industrial, and communications markets.
The 74LVT534D,112 belongs to NXP's legacy LVT (Low-Voltage TTL) logic family, engineered for seamless migration from 5 V to 3.3 V systems while maintaining full interoperability with older TTL families.
FAQ
What is the function of the OE pin on the 74LVT534D,112?
The OE (Output Enable) pin on the 74LVT534D,112 is an active-LOW control that globally enables or disables all eight 3-State outputs. When OE is LOW, the registered Q0–Q7 values appear on the outputs; when OE is HIGH, all outputs enter high-impedance state regardless of clock or data activity. This allows the 74LVT534D,112 to share a common bus without contention, and its behavior is explicitly defined in the Function Table on page 3 of the datasheet.
Does the 74LVT534D,112 support 5 V logic inputs while powered from 3.3 V?
Yes, the 74LVT534D,112 supports 5 V-tolerant inputs: VI can range from –0.5 V to +5.5 V per Recommended Operating Conditions, and absolute maximum input voltage is +7.0 V. This allows direct connection to 5 V TTL outputs without level shifters. The 74LVT534D,112 maintains correct logic interpretation (VIH ≥ 2.0 V, VIL ≤ 0.8 V) and avoids damage due to its internal clamp structure - confirmed in DC Electrical Characteristics and Absolute Maximum Ratings tables.
How does the bus-hold feature work on the 74LVT534D,112 D inputs?
The 74LVT534D,112 integrates bus-hold circuitry on all D0–D7 inputs, which applies ±75 µA to ±150 µA overdrive current to retain the last valid logic state when an input floats. This eliminates external pull-up/pull-down resistors and prevents undefined states during power-up, hot-swap, or unconnected test points. The 74LVT534D,112's bus-hold specification is verified in the DC Electrical Characteristics table under IHOLD, and functions independently of OE or CP status.
What is the maximum clock frequency supported by the 74LVT534D,112?
The 74LVT534D,112 supports a maximum clock frequency of 100 MHz (minimum fMAX) over the full operating temperature range (–40 °C to +85 °C) at VCC = 2.7 V, and up to 150 MHz at VCC = 3.3 V ± 0.3 V. This is derived from AC Characteristics table limits for tPLH/tPHL and tW(H)/tW(L), with typical propagation delay of 3.0 ns enabling reliable operation well above 100 MHz in controlled impedance environments - as specified in the Quick Reference Data and AC Characteristics sections.
Is the 74LVT534D,112 pin-compatible with other 74LVT534 variants like 74LVT534DB or 74LVT534PW?
No - the 74LVT534D,112 is not pin-compatible with 74LVT534DB (SSOP) or 74LVT534PW (TSSOP). All three share identical logic functionality and pin numbering, but differ in physical package: 74LVT534D,112 uses SO (SOT163-1), while DB and PW use SSOP (SOT339-1) and TSSOP (SOT360-1) respectively. Footprint, pitch, and thermal characteristics differ; PCB layout must match the specific package variant. The 74LVT534D,112 datasheet confirms this in the Ordering Information table on page 2.
74LVT534D,112 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- 74LVT
- Package/Case:
- 20-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Function:
- Standard
- Type:
- D-Type
- Output Type:
- Tri-State, Inverted
- Number of Elements:
- 1
- Number of Bits per Element:
- 8
- Clock Frequency:
- 150 MHz
- Max Propagation Delay @ V, Max CL:
- 4.9ns @ 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-SO
74LVT534D,112 FAQ
1.How can I place an order for 74LVT534D,112 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVT534D,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 74LVT534D,112 reliable?
The price and inventory of 74LVT534D,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVT534D,112 is usually 5 days.
3.What payment methods are accepted for 74LVT534D,112?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVT534D,112 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LVT534D,112?
74LVT534D,112 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVT534D,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 74LVT534D,112?
For technical support, including 74LVT534D,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVT534D,112 requirements.
6.How does Aetrix verify that 74LVT534D,112 is sourced from the original manufacturer or authorized distributors?
All 74LVT534D,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 74LVT534D,112 meets industry standards.
7.What is the process for return or replacement of 74LVT534D,112?
All 74LVT534D,112 units undergo pre-shipment inspection (PSI). If there is an issue with 74LVT534D,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 74LVT534D,112 part is unused and in its original packaging.
Return procedure for 74LVT534D,112:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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