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Texas Instruments SN74LVC574ADGVRE4
- Part No.:
- SN74LVC574ADGVRE4
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- 20-TFSOP (0.173", 4.40mm Width)
- Datasheet:
-
SN74LVC574ADGVRE4.pdf
- Description:
- IC FF D-TYPE SNGL 8BIT 20TVSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,525
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Product details
Overview
SN74LVC574ADGVRE4 from Texas Instruments is an octal edge-triggered D-type flip-flop with 3-state outputs, designed for 1.65 V to 3.6 V operation. It features 20-pin TVSOP packaging, 7 ns max propagation delay at 3.3 V, Ioff support for partial-power-down mode, and mixed-mode signal operation enabling 5-V input compatibility with 3.3-V VCC - used in bidirectional bus buffering and I/O port expansion.
For engineers reviewing the SN74LVC574ADGVRE4 datasheet, SN74LVC574ADGVRE4 pinout, SN74LVC574ADGVRE4 application, or SN74LVC574ADGVRE4 equivalent, key selection criteria include its 3-state output control timing (ten/tdis), latch-up immunity (>250 mA), ESD robustness (2000-V HBM), and thermal performance (θJA = 92°C/W) in space-constrained industrial and communications PCBs.
Technical Context
This device implements eight independent D-type latches triggered on the rising edge of CLK, with asynchronous 3-state control via OE. Its CMOS design ensures rail-to-rail logic levels, low dynamic power consumption (Cpd = 30 pF at 3.3 V), and guaranteed operation across −40°C to 125°C ambient.
The Ioff circuitry actively disables outputs during power-down, preventing backflow current when VCC = 0 V while inputs/outputs remain biased up to 5.5 V. Input tolerance to 5.5 V enables direct interfacing with legacy 5-V logic without level shifters.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 1.65 V to 3.6 V - supports single-supply operation in modern low-voltage systems including 1.8-V and 3.3-V domains. |
| Max tpd | 7 ns at 3.3 V - enables reliable 150-MHz clock operation in high-speed data capture and bus interface applications. |
| Ioff Support | Yes - allows safe partial-power-down in multi-rail systems without risk of damaging current flow through powered-off sections. |
| Input Voltage Tolerance | Up to 5.5 V - permits direct connection to 5-V logic families without external level translation circuitry. |
| Operating Temperature | −40°C to 125°C - qualified for extended-temperature industrial and automotive under-hood environments. |
| ESD Rating | 2000-V HBM - exceeds JEDEC JESD22-A114A, ensuring robust handling in automated assembly and field deployment. |
| Latch-Up Immunity | >250 mA per JESD17 - prevents destructive latch-up events in noisy or transient-prone power environments. |
Pinout & Package
SN74LVC574ADGVRE4 uses a 20-pin Thin Very Small Outline Package (TVSOP), pin-compatible with other DGV variants. The package measures 4.4 mm × 3.6 mm × 1.05 mm (max height) and is RoHS-compliant with NIPDAU lead finish and MSL Level-1 rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1–8 (1D–8D) | Data Inputs | Asynchronous parallel data inputs synchronized to CLK↑; tolerate 5.5 V regardless of VCC. |
| 9 | GND | Ground reference for all internal circuitry and output drivers. |
| 10 | VCC | Primary power supply (1.65–3.6 V); powers logic core and output buffers. |
| 11–18 (1Q–8Q) | 3-State Outputs | Octal buffered outputs placed in high-Z state when OE = high; drive capacitive loads directly. |
| 19 | CLK | Positive-edge-triggered clock input; minimum pulse width 3.3 ns at 3.3 V. |
| 20 | OE | Active-low output enable; does not affect internal latch state - data retention unaffected during high-Z mode. |
Key Features
| Feature | Design Value |
|---|---|
| Mixed-mode voltage translation | 5-V-tolerant inputs with 3.3-V VCC enable seamless integration into hybrid 3.3/5-V systems without external translators. |
| Partial-power-down protection | Ioff circuitry disables outputs at VCC = 0 V, eliminating backflow current and enabling hot-swap capability in modular designs. |
| Low ground bounce | Typical VOLP < 0.8 V at VCC = 3.3 V ensures stable logic thresholds during simultaneous output switching. |
| High noise immunity | VIH/VIL thresholds scale with VCC (e.g., VIH = 0.65×VCC at 1.65 V), maintaining consistent noise margins across supply range. |
| Fast enable/disable timing | ten ≤ 7.5 ns and tdis ≤ 6.4 ns at 3.3 V allow rapid bus arbitration and time-multiplexed peripheral sharing. |
Applications
| Industrial PLC I/O Expansion | Automotive Body Control Module |
|---|---|
Use Scenario: Expanding digital input/output capacity in programmable logic controllers using shared backplane buses. IC Role / Device Role / Timing Role: Octal latch buffers isolate microcontroller GPIOs from high-capacitance field wiring while synchronizing sensor actuator signals to system clock. Use Value: Enables deterministic sampling of 8-bit status registers with 7 ns propagation delay and 150-MHz clock support, reducing jitter in real-time control loops. | Use Scenario: Managing door lock, window lift, and mirror position signals in centralized body electronics units. IC Role / Device Role / Timing Role: Bidirectional bus driver translating between 5-V legacy sensors and 3.3-V MCU domain with Ioff-enabled safe power sequencing. Use Value: Eliminates need for discrete level shifters and pull-up networks, reducing BOM count by 3+ components per interface channel. |
| Communications Baseband Processing | Test Equipment Signal Conditioning |
Use Scenario: Capturing parallel ADC output streams in LTE/5G baseband subsystems before serial conversion. IC Role / Device Role / Timing Role: Edge-triggered register capturing 8-bit wide data on rising CLK edge; OE controls multiplexing onto shared test bus. Use Value: Supports 150-MHz sampling rate with setup/hold times of 2 ns/1.5 ns, meeting timing closure for sub-7 ns ADC interfaces. | Use Scenario: Isolating DUT signals from automated test equipment during functional verification of mixed-voltage boards. IC Role / Device Role / Timing Role: 3-state buffer isolating tester logic from DUT power domains during power-cycle testing sequences. Use Value: Prevents backfeed damage during hot-plug test probe insertion via Ioff and 5.5-V input tolerance, improving test station uptime. |
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 | TSSOP-20 package (6.95 mm × 4.4 mm), θJA = 83°C/W, same electrical specs and pinout. | Higher thermal resistance than DGV; less suitable for ultra-dense layouts but offers broader distributor availability. | Select when board-level reflow profile favors TSSOP or when existing footprint uses PW package. |
| 74LVC574ADBVR | SSOP-20 package (7.2 mm × 5.3 mm), θJA = 70°C/W, identical logic function and timing. | Wider body increases PCB area use but improves mechanical stability in vibration-prone environments. | Prefer for industrial control modules requiring enhanced mechanical robustness over miniaturization. |
Compared with SN74LVC574APWR and 74LVC574ADBVR, SN74LVC574ADGVRE4 delivers the smallest footprint (4.4 mm × 3.6 mm) and lowest profile (1.05 mm), making it optimal for space-constrained portable and telecom infrastructure designs where thermal margin is managed via layout.
Availability
SN74LVC574ADGVRE4 is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, automotive body control modules, and communications baseband processing requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for SN74LVC574ADGVRE4 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 delivering analog and embedded processing solutions, with over 90 years of innovation in precision logic, power management, and signal chain technologies.
The SN74LVC574A product line targets high-speed, low-voltage digital interface applications - specifically engineered for robust mixed-signal interoperability, power-aware system partitioning, and industrial-grade reliability in 1.65–3.6-V domains.
FAQ
What is the maximum clock frequency supported by SN74LVC574ADGVRE4?
SN74LVC574ADGVRE4 supports a maximum clock frequency of 150 MHz at VCC = 3.3 V ± 0.3 V and TA = −40°C to 125°C. At lower voltages (e.g., 1.8 V ± 0.15 V), the maximum frequency reduces to 55 MHz. These values are guaranteed across the full operating temperature range and reflect worst-case timing margins per TI's SCAS301R datasheet.
Does SN74LVC574ADGVRE4 support partial-power-down operation?
Yes, SN74LVC574ADGVRE4 includes Ioff circuitry that disables outputs when VCC = 0 V, preventing damaging current backflow from live inputs or outputs into the unpowered device. This feature is explicitly verified in the datasheet's "Ioff" parameter table and supports safe hot-swap and multi-rail power sequencing in complex systems.
Can SN74LVC574ADGVRE4 interface directly with 5-V logic devices?
Yes, SN74LVC574ADGVRE4 accepts input voltages up to 5.5 V regardless of VCC level (1.65–3.6 V), enabling direct connection to 5-V TTL or CMOS outputs without external level shifters. This mixed-mode capability is confirmed in the "Inputs Accept Voltages to 5.5 V" specification and functional description of the SN74LVC574A family.
What is the thermal resistance (θJA) of SN74LVC574ADGVRE4 in its TVSOP package?
The junction-to-ambient thermal resistance (θJA) of SN74LVC574ADGVRE4 in the TVSOP (DGV) package is 92°C/W, as specified in the Absolute Maximum Ratings table of the SCAS301R datasheet. This value assumes standard JEDEC 51-7 PCB mounting conditions with 1-inch² copper pad and is critical for thermal design validation in high-density layouts.
How does the output-enable (OE) pin behave during power-up sequences?
To ensure high-impedance state during power-up or power-down, OE should be tied to VCC through a pullup resistor per the datasheet recommendation. SN74LVC574ADGVRE4 does not include internal power-on reset for OE; external biasing prevents bus contention. OE remains functional across the full VCC range and does not affect internal latch states - old data persists even while outputs are disabled.
SN74LVC574ADGVRE4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVC
- Package/Case:
- 20-TFSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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:
- 6.8ns @ 3.3V, 50pF
- Trigger Type:
- Positive Edge
- Current - Output High, Low:
- 24mA, 24mA
- Voltage - Supply:
- 1.65V ~ 3.6V
- Current - Quiescent (Iq):
- 10 µA
- Input Capacitance:
- 4 pF
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TVSOP
SN74LVC574ADGVRE4 FAQ
1.How can I place an order for SN74LVC574ADGVRE4 through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVC574ADGVRE4 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 SN74LVC574ADGVRE4 reliable?
The price and inventory of SN74LVC574ADGVRE4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVC574ADGVRE4 is usually 5 days.
3.What payment methods are accepted for SN74LVC574ADGVRE4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LVC574ADGVRE4 transactions.
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4.How is shipping managed for SN74LVC574ADGVRE4?
SN74LVC574ADGVRE4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LVC574ADGVRE4 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 SN74LVC574ADGVRE4?
For technical support, including SN74LVC574ADGVRE4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVC574ADGVRE4 requirements.
6.How does Aetrix verify that SN74LVC574ADGVRE4 is sourced from the original manufacturer or authorized distributors?
All SN74LVC574ADGVRE4 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 SN74LVC574ADGVRE4 meets industry standards.
7.What is the process for return or replacement of SN74LVC574ADGVRE4?
All SN74LVC574ADGVRE4 units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVC574ADGVRE4, 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 SN74LVC574ADGVRE4 part is unused and in its original packaging.
Return procedure for SN74LVC574ADGVRE4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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