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Texas Instruments SN74LV574ADGVR
- Part No.:
- SN74LV574ADGVR
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- 20-TFSOP (0.173", 4.40mm Width)
- Datasheet:
-
SN74LV574ADGVR.pdf
- Description:
- IC FF D-TYPE SNGL 8BIT 20TVSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,401
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Product details
Overview
SN74LV574ADGVR from Texas Instruments is an octal edge-triggered D-type flip-flop with 3-state outputs, designed for 2-V to 5.5-V operation. It delivers 7.1 ns maximum propagation delay at 5 V, supports mixed-mode voltage operation on all ports, features Ioff for partial-power-down mode, and is used in I/O expansion and bidirectional bus driving applications.
For engineers reviewing the SN74LV574ADGVR datasheet, SN74LV574ADGVR pinout, SN74LV574ADGVR application, or SN74LV574ADGVR equivalent, this page provides verified functional identity, TVSOP-20 package mapping, confirmed timing and drive specifications, and real-world implementation context for server, telecom, and LED display systems.
Technical Context
The SN74LV574ADGVR implements eight independent D-type latches triggered on the positive clock edge, with a buffered output-enable (OE) input controlling simultaneous 3-state output activation. Its balanced CMOS outputs support high-impedance, logic-high, and logic-low states with matched sourcing/sinking capability up to ±16 mA at 5 V.
It integrates Ioff circuitry that disables outputs and limits backflow current when VCC = 0 V, enabling safe partial-power-down operation. The device accepts 5-V-tolerant inputs while operating from as low as 2 V, allowing seamless level translation between disparate supply domains without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2 V to 5.5 V - enables interoperability across 2.5-V, 3.3-V, and 5-V logic domains |
| tpd (max) | 7.1 ns at VCC = 5 V - ensures sub-10 ns data capture timing for high-speed bus interfaces |
| Output Drive | ±16 mA at VCC = 5 V - sufficient to drive 50-pF capacitive loads or multiple CMOS inputs directly |
| Ioff Current | ≤5 µA - prevents damaging backflow during power sequencing in multi-rail systems |
| Input Voltage Tolerance | VI up to 5.5 V - allows 5-V signals to interface safely with 2.5-V or 3.3-V powered SN74LV574ADGVR |
| Operating Temperature | –40°C to +125°C - supports industrial and telecom infrastructure deployment |
| ESD Rating (HBM) | ±2000 V - meets standard robustness requirements for board-level handling and integration |
Pinout & Package
SN74LV574ADGVR is packaged in a 20-pin TVSOP (DGV) with 3.6 mm × 4.4 mm body size and 0.5-mm lead pitch. This ultra-thin, surface-mount package supports high-density PCB layouts and automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OE (active-low) | Global 3-state control: asserts high-impedance on all Q outputs when low |
| 2–9 | 1D–8D | Eight asynchronous data inputs feeding respective D-type latch stages |
| 10 | GND | Reference ground for all internal logic and output drivers |
| 11 | CLK | Positive-edge-triggered clock synchronizing all eight D-to-Q transfers |
| 12–19 | 8Q–1Q | Eight buffered, 3-state outputs - order reversed top-to-bottom per TI pin diagram |
| 20 | VCC | Single power supply input supporting 2-V to 5.5-V operation |
Key Features
| Feature | Design Value |
|---|---|
| Mixed-mode voltage operation | Accepts 5-V inputs while powered from 2.5-V or 3.3-V rails - eliminates level shifters in heterogeneous systems |
| Ioff partial-power-down | Disables outputs and limits leakage to ≤5 µA when VCC = 0 V - enables hot-swap and rail sequencing safety |
| Balanced CMOS 3-state outputs | Sources and sinks up to ±16 mA symmetrically - avoids bus contention and enables clean bidirectional signaling |
| Low ground bounce (VOLP) | <0.8 V at VCC = 3.3 V - reduces noise coupling into shared ground planes in dense digital systems |
| Controlled output undershoot (VOHV) | >2.3 V at VCC = 3.3 V - maintains signal integrity during fast transitions into capacitive loads |
Applications
| Server I/O Expansion | LED Display Row Drivers |
|---|---|
Use Scenario: Expanding GPIO count on baseboard management controllers (BMC) to manage hot-swap slots and sensor interfaces. IC Role / Device Role / Timing Role: Octal latch buffering and isolating control signals between BMC and peripheral modules, synchronized by system clock edges. Use Value: Enables deterministic, glitch-free signal handoff using edge-triggered storage and 3-state isolation during reconfiguration. |
Use Scenario: Driving multiplexed row lines in large-format indoor LED video walls requiring precise timing and low EMI. IC Role / Device Role / Timing Role: Latching row enable signals from FPGA video controller; outputs placed in high-Z between frames to prevent ghosting. Use Value: Delivers 7.1 ns tpd and controlled edge rates to minimize crosstalk and ensure pixel-perfect row activation timing. |
| Telecom Line Card Buffers | Industrial Network Switch Interfaces |
Use Scenario: Isolating and latching configuration registers on modular line cards in carrier-grade packet switches. IC Role / Device Role / Timing Role: Holding static control bits (e.g., PHY reset, SFP presence) with OE-gated 3-state outputs for backplane bus sharing. Use Value: Supports mixed-voltage operation (3.3-V logic with 5-V backplane signaling), reducing interposer complexity. |
Use Scenario: Interfacing microcontroller GPIOs to multi-port Ethernet PHYs in managed industrial switches. IC Role / Device Role / Timing Role: Buffering MDIO/MDC and interrupt signals while providing Ioff protection during PHY power cycling. Use Value: Prevents backfeed damage during partial power-down of PHY sections, ensuring system-level reliability. |
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 | Lower VCC range (1.65–3.6 V); faster tpd (6.1 ns @ 3.3 V); no 5-V tolerant inputs | Restricted to 3.3-V-only systems; unsuitable for mixed 5-V/3.3-V interfacing | Select when operating exclusively at 3.3 V and requiring minimal propagation delay |
| 74AUP1G74DC,125 | Single D-flip-flop in 6-pin XSON; VCC = 0.8–3.6 V; Ioff supported; no bus-oriented 3-state outputs | Not functionally equivalent - requires eight discrete units to match channel count and lacks OE-controlled bus driving | Use only for point-to-point, low-pin-count DFF needs - not a drop-in replacement for SN74LV574ADGVR |
Compared with SN74LVC574APWR, SN74LV574ADGVR offers wider supply flexibility and 5-V input tolerance critical for legacy interface bridging; compared with 74AUP1G74DC,125, it provides integrated octal functionality with centralized 3-state control essential for bus applications.
Availability
SN74LV574ADGVR is available at Aetrix Electronics and suitable for server I/O expansion, LED display row driving, and telecom infrastructure applications requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for SN74LV574ADGVR 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, embedded processing, and logic solutions for industrial, automotive, and communications markets.
The SN74LV574ADGVR belongs to TI's LV logic family, engineered for low-voltage operation with robust noise immunity and mixed-signal compatibility - specifically targeting bus interface, I/O expansion, and signal conditioning in space-constrained, multi-rail systems.
FAQ
What is the maximum clock frequency supported by SN74LV574ADGVR?
The SN74LV574ADGVR supports up to 205 MHz maximum operating frequency at VCC = 5 V with CL = 15 pF, as specified in its switching characteristics table. At 3.3 V and 15-pF load, it achieves 145 MHz. These values assume proper layout, decoupling, and termination to maintain signal integrity - actual system-level frequency may be limited by board parasitics and load conditions.
Does SN74LV574ADGVR support hot-swap or partial-power-down operation?
Yes, SN74LV574ADGVR includes Ioff circuitry that disables all outputs and limits leakage current to ≤5 µA when VCC = 0 V. This feature protects against damaging current backflow during live insertion or rail sequencing, making SN74LV574ADGVR suitable for hot-swap backplane and modular system designs where power domains are enabled independently.
Can SN74LV574ADGVR interface 5-V signals while powered from a 3.3-V supply?
Yes, SN74LV574ADGVR features 5-V-tolerant inputs - its VI rating extends to 5.5 V regardless of VCC, which can be as low as 2 V. When powered from 3.3 V, it safely accepts 5-V logic inputs without clamping diodes conducting or damaging the device, enabling direct connection to legacy 5-V peripherals without external level shifters.
What is the purpose of the reversed Q-output pin order (8Q to 1Q) on SN74LV574ADGVR?
The SN74LV574ADGVR uses a reversed Q-output pin order (pins 12–19: 8Q, 7Q, ..., 1Q) to align physical layout with industry-standard octal bus driver conventions, minimizing trace crossing on PCBs. This arrangement simplifies routing when connecting to memory address/data buses or parallel peripherals where bit-order matching reduces layer count and improves signal integrity.
How does the OE pin behave during power-up or power-down sequences?
The OE pin on SN74LV574ADGVR is active-low and does not affect internal latch states - it only controls output driver enablement. To guarantee high-impedance outputs during power transitions, TI recommends tying OE to VCC via a pullup resistor (value determined by driver sink capability). This ensures outputs remain safely isolated until valid VCC and control signals are established.
SN74LV574ADGVR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LV
- Package/Case:
- 20-TFSOP (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:
- 175 MHz
- Max Propagation Delay @ V, Max CL:
- 5.7ns @ 5V, 50pF
- Trigger Type:
- Positive Edge
- Current - Output High, Low:
- 16mA, 16mA
- Voltage - Supply:
- 2V ~ 5.5V
- Current - Quiescent (Iq):
- 20 µA
- Input Capacitance:
- 1.8 pF
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TVSOP
SN74LV574ADGVR FAQ
1.How can I place an order for SN74LV574ADGVR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LV574ADGVR 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 SN74LV574ADGVR reliable?
The price and inventory of SN74LV574ADGVR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LV574ADGVR is usually 5 days.
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SN74LV574ADGVR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LV574ADGVR 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 SN74LV574ADGVR?
For technical support, including SN74LV574ADGVR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LV574ADGVR requirements.
6.How does Aetrix verify that SN74LV574ADGVR is sourced from the original manufacturer or authorized distributors?
All SN74LV574ADGVR 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 SN74LV574ADGVR meets industry standards.
7.What is the process for return or replacement of SN74LV574ADGVR?
All SN74LV574ADGVR units undergo pre-shipment inspection (PSI). If there is an issue with SN74LV574ADGVR, 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 SN74LV574ADGVR part is unused and in its original packaging.
Return procedure for SN74LV574ADGVR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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