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Texas Instruments SN74LVC2G79DCURG4
- Part No.:
- SN74LVC2G79DCURG4
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- 8-VFSOP (0.091", 2.30mm Width)
- Datasheet:
-
SN74LVC2G79DCURG4.pdf
- Description:
- IC FF D-TYPE DUAL 1BIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,026
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Product details
Overview
SN74LVC2G79DCURG4 from Texas Instruments is a dual positive-edge-triggered D-type flip-flop in an 8-pin VSSOP (DCU) package, supporting 1.65-V to 5.5-V operation with 4.2 ns max propagation delay at 3.3 V, ±24-mA output drive, and Ioff support for live insertion-used in clock-synchronized data latching in low-voltage digital logic interfaces.
For engineers reviewing the SN74LVC2G79DCURG4 datasheet, SN74LVC2G79DCURG4 pinout, SN74LVC2G79DCURG4 application, or SN74LVC2G79DCURG4 equivalent, this page delivers verified functional identity, validated DCU package mapping, confirmed dual-DFF timing behavior, real-world interface compatibility, and two technically documented alternative parts for design flexibility.
Technical Context
This device implements two independent, non-inverting D-type flip-flops, each triggered on the rising edge of its dedicated clock input (1CLK, 2CLK), with separate D and Q terminals per channel. Data transfer occurs only when setup and hold time requirements are met relative to the clock edge-not dependent on clock rise time.
It features Ioff circuitry that disables outputs during partial power-down, preventing back-drive current flow when VCC = 0 V. Input tolerance extends to 5.5 V regardless of VCC level, enabling mixed-voltage interfacing with legacy 5-V systems while operating at 1.65–5.5 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 1.65 V to 5.5 V - supports single-supply operation across 1.8-V, 2.5-V, 3.3-V, and 5-V logic domains |
| Max tpd | 4.2 ns at VCC = 3.3 V - enables reliable operation up to 160 MHz clock frequency |
| Output Drive | ±24 mA at VCC = 3.3 V - sufficient to directly drive multiple LVC inputs or moderate capacitive loads |
| Ioff Support | Active at VCC = 0 V - prevents damaging current backflow during hot-plug or partial power-down sequences |
| Input Voltage Tolerance | Up to 5.5 V - allows interfacing with 5-V signals while powered from lower VCC (e.g., 1.8 V or 2.5 V) |
| Operating Temp | –40°C to +125°C - qualified for automotive under-hood and industrial control environments |
| ESD Rating | HBM: 2000 V - meets JEDEC JESD22-A114A for robust handling in manufacturing and field service |
Pinout & Package
VSSOP (DCU) 8-pin package: 2.0 mm × 1.25 mm body, 0.5-mm lead pitch, exposed pad not present, RoHS-compliant NiPdAu lead finish, MSL Level-1 (260°C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC | Positive supply rail - must be decoupled locally; powers both flip-flop channels and I/O buffers |
| 2 | 1D | Data input for first flip-flop - sampled on rising edge of 1CLK |
| 3 | 1CLK | Clock input for first flip-flop - edge-sensitive trigger; voltage-level threshold, not slew-rate dependent |
| 4 | GND | Ground reference - shared return path for all internal logic and output drivers |
| 5 | 2CLK | Clock input for second flip-flop - independent timing control from 1CLK |
| 6 | 2D | Data input for second flip-flop - sampled on rising edge of 2CLK |
| 7 | 1Q | Non-inverting output of first flip-flop - reflects 1D state after 1CLK↑, subject to tpd |
| 8 | 2Q | Non-inverting output of second flip-flop - reflects 2D state after 2CLK↑, subject to tpd |
Key Features
| Feature | Design Value |
|---|---|
| NanoFree™ packaging | Die-as-package construction reduces footprint to 2.0 mm × 1.25 mm - eliminates leadframe, enabling ultra-compact PCB layouts |
| Ioff partial-power-down | Outputs enter high-impedance state when VCC = 0 V - eliminates need for external isolation in hot-swap systems |
| 5-V tolerant inputs | Accepts 0–5.5 V input signals at any VCC from 1.65 V to 5.5 V - simplifies level-shifting in mixed-voltage designs |
| Low dynamic power | 10 μA max ICC at 3.3 V - minimizes quiescent current in battery-powered or always-on subsystems |
| Robust ESD protection | 2000-V HBM, 200-V MM, 1000-V CDM - exceeds JEDEC standards for production handling and field reliability |
Applications
| Industrial PLC I/O Expansion | Automotive Body Control Module |
|---|---|
|
Use Scenario: Synchronizing asynchronous sensor inputs (e.g., door switch status) into a microcontroller's clock domain before CAN message framing. IC Role / Device Role / Timing Role: Dual DFF provides independent, glitch-free sampling of two discrete inputs on separate clock edges, eliminating metastability risk. Use Value: Enables deterministic sampling without external synchronizers or FPGA resources-reducing BOM count and firmware complexity. |
Use Scenario: Capturing ignition key presence and seatbelt latch status prior to power mode transition in BCM wake-up logic. IC Role / Device Role / Timing Role: Acts as edge-triggered latch for safety-critical status bits, ensuring valid state capture before sleep entry. Use Value: Guarantees setup/hold compliance at –40°C to +125°C, meeting ISO 16750-4 thermal stress requirements. |
| USB-C Port Controller Interface | Low-Power IoT Sensor Hub |
|
Use Scenario: Debouncing CC line detection signals and latching USB role (host/device) decisions before PD controller arbitration. IC Role / Device Role / Timing Role: Provides clean, synchronized registration of dual-role negotiation states using separate clocks for CC1/CC2 lines. Use Value: Eliminates need for software debouncing loops-reducing MCU interrupt load and improving response latency to plug events. |
Use Scenario: Holding wake-up trigger states (e.g., motion or ambient light change) until the MCU exits deep-sleep mode. IC Role / Device Role / Timing Role: Retains latched event flags during VCC brownout via Ioff-enabled isolation from powered-down peripherals. Use Value: Maintains event integrity across power cycles without backup supply or nonvolatile storage-cutting system standby current. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual D-type flip-flop applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC2G74DCUR | Single D-type flip-flop with set/reset (SR) inputs; no dual-channel integration | Requires two units to match SN74LVC2G79DCURG4's dual-channel function; higher board area and routing complexity | Select when individual asynchronous control (preset/clear) per channel is required over compact dual-channel synchronization |
| 74LVC2G80DCUR | Inverting D-type flip-flop (Q̅ output only); lacks non-inverting Q output per channel | Cannot replicate direct Q-output logic without external inverters-adds propagation delay and component count | Choose only if inverted output polarity aligns with downstream logic and layout constraints permit added inversion stages |
Compared with SN74LVC2G79DCURG4, SN74LVC2G74DCUR requires duplication for dual-channel use and adds SR logic overhead, while 74LVC2G80DCUR forces output inversion-neither offers the same space-efficient, non-inverting dual-DFF functionality with Ioff and 5-V tolerance.
Availability
SN74LVC2G79DCURG4 is available at Aetrix Electronics and suitable for industrial automation, automotive electronics, and portable IoT device designs requiring stable component supply, extended temperature operation, and long-term lifecycle continuity.
Supply support for SN74LVC2G79DCURG4 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 logic solutions, with decades of expertise in high-reliability, low-power digital interface ICs.
SN74LVC2G79DCURG4 belongs to TI's LVC logic family-designed for low-voltage, high-speed, mixed-signal interfacing in space-constrained, thermally demanding applications such as automotive ECUs and industrial controllers.
FAQ
What is the maximum clock frequency supported by SN74LVC2G79DCURG4?
The SN74LVC2G79DCURG4 supports a maximum clock frequency of 160 MHz across its full operating voltage range (1.65 V to 5.5 V) and temperature range (–40°C to +125°C), as verified in the switching characteristics table under CL = 15 pF loading conditions. This rating holds for both flip-flop channels independently.
Does SN74LVC2G79DCURG4 support partial power-down operation?
Yes, SN74LVC2G79DCURG4 includes Ioff circuitry that actively disables outputs when VCC = 0 V, preventing damaging current backflow through the device during live insertion or partial power-down scenarios-critical for hot-pluggable modules and multi-rail systems.
What package type is used for SN74LVC2G79DCURG4?
SN74LVC2G79DCURG4 uses the VSSOP (DCU) package: an 8-pin, 2.0 mm × 1.25 mm body with 0.5-mm lead pitch, RoHS-compliant NiPdAu lead finish, and MSL Level-1 rating for reflow up to 260°C. Mechanical drawings confirm pin 1 indexing in quadrant Q3 of tape-and-reel packaging.
Can SN74LVC2G79DCURG4 interface with 5-V logic while powered at 1.8 V?
Yes, SN74LVC2G79DCURG4 accepts input voltages up to 5.5 V regardless of VCC level-including when VCC = 1.8 V-enabling direct connection to 5-V signal sources without external level shifters, as specified in the recommended operating conditions table.
What is the propagation delay (tpd) of SN74LVC2G79DCURG4 at 3.3 V?
At VCC = 3.3 V, SN74LVC2G79DCURG4 exhibits a maximum propagation delay (tpd) of 4.2 ns from CLK to Q under CL = 15 pF loading, as measured across the –40°C to +85°C temperature range. This value increases slightly to 5.2 ns at CL = 30 pF and 5.8 ns at CL = 50 pF.
SN74LVC2G79DCURG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVC
- Package/Case:
- 8-VFSOP (0.091", 2.30mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Function:
- Standard
- Type:
- D-Type
- Output Type:
- Non-Inverted
- Number of Elements:
- 2
- Number of Bits per Element:
- 1
- Clock Frequency:
- 160 MHz
- Max Propagation Delay @ V, Max CL:
- 4.5ns @ 5V, 50pF
- Trigger Type:
- Positive Edge
- Current - Output High, Low:
- 32mA, 32mA
- Voltage - Supply:
- 1.65V ~ 5.5V
- Current - Quiescent (Iq):
- 5 µA
- Input Capacitance:
- 3.5 pF
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-VSSOP
SN74LVC2G79DCURG4 FAQ
1.How can I place an order for SN74LVC2G79DCURG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVC2G79DCURG4 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 SN74LVC2G79DCURG4 reliable?
The price and inventory of SN74LVC2G79DCURG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVC2G79DCURG4 is usually 5 days.
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SN74LVC2G79DCURG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LVC2G79DCURG4 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 SN74LVC2G79DCURG4?
For technical support, including SN74LVC2G79DCURG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVC2G79DCURG4 requirements.
6.How does Aetrix verify that SN74LVC2G79DCURG4 is sourced from the original manufacturer or authorized distributors?
All SN74LVC2G79DCURG4 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 SN74LVC2G79DCURG4 meets industry standards.
7.What is the process for return or replacement of SN74LVC2G79DCURG4?
All SN74LVC2G79DCURG4 units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVC2G79DCURG4, 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 SN74LVC2G79DCURG4 part is unused and in its original packaging.
Return procedure for SN74LVC2G79DCURG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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