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Texas Instruments SN74LVTH574IPWREP
- Part No.:
- SN74LVTH574IPWREP
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
SN74LVTH574IPWREP.pdf
- Description:
- IC FF D-TYPE SNGL 8BIT 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,038
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Product details
Overview
SN74LVTH574IPWREP from Texas Instruments is an octal edge-triggered D-type flip-flop designed for 3.3-V VCC operation with 5-V tolerant inputs and outputs, supporting mixed-mode signal interfacing between 3.3-V logic and legacy 5-V systems. It features bus-hold circuitry on all eight data inputs, Ioff and power-up 3-state for hot insertion, and operates across −40°C to 85°C. Typical propagation delay is 3 ns at VCC = 3.3 V, with 150-MHz maximum clock frequency.
For engineers reviewing the SN74LVTH574IPWREP datasheet, SN74LVTH574IPWREP pinout, SN74LVTH574IPWREP application, or SN74LVTH574IPWREP equivalent, key selection criteria include its 20-pin TSSOP package, 2.7–3.6-V supply range, ±100-µA Ioff, bus-hold input retention, and guaranteed hot-insertion support via power-up 3-state and Ioff.
Technical Context
This device implements eight independent D-type latches synchronized to the rising edge of CLK, with asynchronous output-enable (OE) control that places Q outputs in high-impedance without affecting internal state retention. The bus-hold circuitry actively maintains valid logic levels on floating D inputs without external resistors, eliminating pullup/pulldown requirements.
It supports unregulated battery operation down to 2.7 V and provides robust ESD protection (2000-V HBM, 200-V MM), latch-up immunity (>500 mA), and output ground bounce (VOLP) < 0.8 V at 3.3 V. The Ioff specification ensures no backflow current during power-down, critical for live insertion into backplane or modular systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.7 V to 3.6 V - Enables direct connection to 3.3-V rails and compatibility with brownout-prone battery-powered systems. |
| Input Voltage Tolerance | Up to 5.5 V - Allows direct interface with 5-V TTL logic without level-shifting components. |
| Max Clock Frequency | 150 MHz - Supports high-speed data latching in memory buffers and address/data bus applications. |
| tPLH/tPHL | 3 ns typical at 3.3 V - Ensures tight timing margins in synchronous bus architectures with minimal skew. |
| Ioff | ±100 µA at VCC = 0 - Prevents damaging current flow when powered down, enabling safe hot-swap capability. |
| Bus-Hold Current | ±500 µA max - Actively holds unused D inputs at valid logic states, removing need for external biasing. |
| Operating Temperature | −40°C to +85°C - Qualified for extended industrial environments per enhanced DMS and qualification pedigree. |
Pinout & Package
SN74LVTH574IPWREP is housed in a 20-pin Thin Shrink Small-Outline Package (TSSOP-PW), 6.5 mm × 4.4 mm body, 0.65 mm pitch, JEDEC MO-153 compliant, with moisture sensitivity level 1 (260°C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OE (Output Enable) | Active-low control: drives all eight Q outputs to high-impedance when high; does not affect internal latch state. |
| 2–9 | D1–D8 (Data Inputs) | Edge-triggered data inputs with integrated bus-hold; retain last valid logic level when floating. |
| 10 | GND | Ground reference for all internal circuitry and output drivers. |
| 11 | VCC | 3.3-V supply input; supports operation down to 2.7 V with full functionality. |
| 12–19 | Q1–Q8 (Outputs) | Octal buffered outputs with 64-mA sink / 32-mA source drive strength and hot-insertion-safe 3-state. |
| 20 | CLK | Clock input triggering Q updates on rising edge; accepts 5-V logic levels while operating at 3.3-V VCC. |
Key Features
| Feature | Design Value |
|---|---|
| Mixed-mode voltage interface | 5-V-tolerant inputs/outputs with 3.3-V VCC - eliminates level shifters in 3.3-V/5-V hybrid bus systems. |
| Integrated bus-hold circuitry | Eliminates external pullup/pulldown resistors on all eight D inputs - reduces BOM count and PCB area. |
| Hot-insertion support | Ioff and power-up 3-state ensure zero backflow current and automatic high-Z during power transitions - enables live module replacement. |
| Low ground bounce | VOLP < 0.8 V at 3.3 V - minimizes noise coupling into shared ground planes in dense digital systems. |
| Extended temperature qualification | JEDEC-compliant HAST, temperature cycling, and electromigration testing - validated for industrial reliability over −40°C to 85°C. |
Applications
| Industrial Backplane Bus Buffer | Legacy System Interface Adapter |
|---|---|
Use Scenario: Latching address/data signals between a 3.3-V FPGA controller and a 5-V peripheral card in a modular PLC rack. IC Role / Device Role / Timing Role: Octal D-flip-flop providing synchronized, level-shifted data capture with bus-hold protection against signal float during card insertion/removal. Use Value: Enables hot-swappable I/O modules without external level shifters or pull resistors, reducing system integration complexity and failure points. |
Use Scenario: Interfacing a modern 3.3-V microcontroller to legacy 5-V RS-232 transceivers or parallel EEPROMs in retrofitted instrumentation. IC Role / Device Role / Timing Role: Bidirectional voltage-tolerant latch buffering control and status lines while maintaining timing integrity at up to 150 MHz. Use Value: Preserves existing 5-V subsystems during MCU upgrades, avoiding redesign of analog interface stages or bus termination networks. |
| Automotive Body Control Module | Test Equipment Signal Conditioning |
Use Scenario: Isolating and latching sensor input signals in a vehicle's BCM where supply voltage may dip below 3.0 V during cranking. IC Role / Device Role / Timing Role: Low-voltage operational latch with bus-hold and Ioff, ensuring deterministic input state retention during brownout events. Use Value: Prevents spurious outputs during engine start-up, improving functional safety compliance without adding supervisory circuitry. |
Use Scenario: Capturing high-speed digital stimulus/response waveforms in automated test equipment with mixed-voltage DUT interfaces. IC Role / Device Role / Timing Role: Precision edge-triggered sampling element with sub-4-ns propagation delay and 50-pF load drive capability. Use Value: Delivers accurate timing alignment between stimulus generation and response capture across voltage domains, reducing measurement jitter. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal D-type latch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC574APWR | LVC family: 1.65–3.6-V VCC, no 5-V tolerance, no bus-hold, lower drive (24 mA), no Ioff. | Suitable only for pure 3.3-V or lower systems; requires external pull resistors and cannot replace SN74LVTH574IPWREP in 5-V interface roles. | Select when cost and power are prioritized over mixed-voltage interoperability and hot-swap capability. |
| SN74ALVCH162244DLR | 16-bit buffer (not latch), ALVC family, 1.65–3.6-V, no 5-V tolerance, no clock or storage function. | Provides level translation and drive boost but lacks edge-triggered storage - cannot substitute for data synchronization or state retention. | Choose only for non-latching bus driving; not a functional alternative for clocked data capture applications. |
Compared with SN74LVC574APWR and SN74ALVCH162244DLR, SN74LVTH574IPWREP uniquely combines 5-V-tolerant I/O, bus-hold, Ioff, and edge-triggered latching in a single 20-pin TSSOP - making it irreplaceable in mixed-voltage, hot-pluggable, or brownout-resilient designs requiring deterministic data capture.
Availability
SN74LVTH574IPWREP is available at Aetrix Electronics and suitable for industrial backplane bus buffering, legacy system interface adaptation, automotive body control modules, and test equipment signal conditioning requiring stable component supply and long-term lifecycle assurance.
Supply support for SN74LVTH574IPWREP 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
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and connectivity technologies, with decades of experience in high-reliability logic and interface solutions.
SN74LVTH574IPWREP belongs to TI's enhanced-product (EP) logic portfolio, engineered for extended temperature operation, controlled baseline manufacturing, and DMS support - targeting mission-critical industrial, defense, and automotive applications where supply chain resilience and long-term availability are mandatory.
FAQ
What is the primary function of SN74LVTH574IPWREP in a digital system?
SN74LVTH574IPWREP functions as an octal edge-triggered D-type flip-flop that captures and holds eight bits of data on the rising edge of its clock input. Its design enables synchronized data latching between mixed-voltage domains - specifically 3.3-V logic systems interfacing with 5-V peripherals - while providing bus-hold, hot-insertion support, and extended temperature reliability. The SN74LVTH574IPWREP is commonly used in bus buffering, address/data registration, and level-translating control path applications.
Does SN74LVTH574IPWREP support hot insertion, and how is this implemented?
Yes, SN74LVTH574IPWREP supports hot insertion through two complementary features: Ioff circuitry disables outputs when VCC = 0, preventing backflow current into powered-down boards, and power-up 3-state forces outputs into high-impedance during power ramp-up/down. These features are verified per JEDEC standards and eliminate bus conflicts during live module replacement - a requirement explicitly met by SN74LVTH574IPWREP in backplane and modular chassis designs.
Can SN74LVTH574IPWREP operate with a supply voltage below 3.3 V, and what is the minimum supported VCC?
Yes, SN74LVTH574IPWREP is fully specified to operate down to 2.7 V VCC, supporting unregulated battery-powered systems where supply voltage may sag during peak load or cold cranking. At 2.7 V, it maintains 150-MHz maximum clock frequency, 2.4-V VOH (with 8-mA load), and full bus-hold and Ioff functionality - all confirmed in the recommended operating conditions table of the official datasheet for SN74LVTH574IPWREP.
How does the bus-hold feature on SN74LVTH574IPWREP eliminate the need for external resistors?
The bus-hold circuitry on each D input of SN74LVTH574IPWREP actively detects and reinforces the last valid logic state (high or low) with ±500 µA dynamic current, holding floating inputs at defined voltage levels without external pullup or pulldown resistors. This feature is enabled by default and requires no configuration - directly reducing BOM count, PCB space, and potential signal integrity issues caused by resistor parasitics in high-speed layouts using SN74LVTH574IPWREP.
What packaging and environmental qualifications apply to SN74LVTH574IPWREP?
SN74LVTH574IPWREP is supplied in a 20-pin TSSOP (PW) package with NiPdAu lead finish, MSL Level-1 rating (unlimited floor life at ≤30°C/60% RH), and RoHS compliance. It undergoes enhanced qualification including biased 85/85 testing, temperature cycling, HAST, and electromigration analysis per JEDEC standards - confirming reliable operation across −40°C to +85°C and supporting long-term deployment in industrial and automotive environments where SN74LVTH574IPWREP is deployed.
SN74LVTH574IPWREP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVTH
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
- 4.5ns @ 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:
- 3 pF
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TSSOP
SN74LVTH574IPWREP FAQ
1.How can I place an order for SN74LVTH574IPWREP through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVTH574IPWREP 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 SN74LVTH574IPWREP reliable?
The price and inventory of SN74LVTH574IPWREP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVTH574IPWREP is usually 5 days.
3.What payment methods are accepted for SN74LVTH574IPWREP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LVTH574IPWREP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74LVTH574IPWREP?
SN74LVTH574IPWREP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LVTH574IPWREP 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 SN74LVTH574IPWREP?
For technical support, including SN74LVTH574IPWREP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVTH574IPWREP requirements.
6.How does Aetrix verify that SN74LVTH574IPWREP is sourced from the original manufacturer or authorized distributors?
All SN74LVTH574IPWREP 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 SN74LVTH574IPWREP meets industry standards.
7.What is the process for return or replacement of SN74LVTH574IPWREP?
All SN74LVTH574IPWREP units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVTH574IPWREP, 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 SN74LVTH574IPWREP part is unused and in its original packaging.
Return procedure for SN74LVTH574IPWREP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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