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Texas Instruments SN74LVC2G79DCURE4
- Part No.:
- SN74LVC2G79DCURE4
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- 8-VFSOP (0.091", 2.30mm Width)
- Datasheet:
-
SN74LVC2G79DCURE4.pdf
- Description:
- IC FF D-TYPE DUAL 1BIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,661
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Product details
Overview
SN74LVC2G79DCURE4 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 portable logic interfaces and level-shifting bus buffers.
For engineers reviewing the SN74LVC2G79DCURE4 datasheet, SN74LVC2G79DCURE4 pinout, SN74LVC2G79DCURE4 application, or SN74LVC2G79DCURE4 equivalent, key selection criteria include VCC operating range (1.65–5.5 V), tpd ≤ 4.2 ns at 3.3 V, Ioff-enabled partial-power-down behavior, and DCU package thermal impedance (227°C/W).
Technical Context
This device implements two independent D-type flip-flops, each triggered on the rising edge of its dedicated clock input (1CLK, 2CLK), with asynchronous data capture governed by setup (tsu = 0.9–2.2 ns) and hold (th = 0.5–1.4 ns) timing windows across VCC and temperature. No reset or preset control lines are present-operation is strictly synchronous and edge-triggered.
Each flip-flop features rail-to-rail CMOS-compatible outputs capable of driving ±24 mA at 3.3 V, with low dynamic power consumption (ICC ≤ 10 µA max) and robust Ioff protection that disables outputs and blocks current backflow when VCC = 0 V-enabling hot-plug capability in mixed-voltage systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 1.65 V to 5.5 V - supports interoperability across 1.8-V, 2.5-V, 3.3-V, and 5-V logic domains without level shifters. |
| tpd (max) | 4.2 ns at VCC = 3.3 V - enables reliable operation up to 160 MHz clock frequency in high-speed digital control paths. |
| Ioff Support | Active at VCC = 0 V - prevents damaging back-current during partial power-down or hot-swap events in modular systems. |
| Output Drive | ±24 mA at VCC = 3.3 V - sufficient to directly drive multiple LVC inputs or small capacitive loads (<15 pF) without buffering. |
| ESD Rating | 2000-V HBM - meets industrial-grade robustness requirements for handling and board-level integration. |
| Operating Temp | –40°C to +125°C - qualified for automotive under-hood and industrial motor-control environments. |
Pinout & Package
VSSOP (DCU) 8-pin package: 2.3 mm × 2.0 mm footprint, 0.5-mm lead pitch, 0.9-mm max height, exposed pad not present, JEDEC MO-187 variant CA compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | 1CLK | Positive-edge clock input for first flip-flop - triggers data transfer from 1D to 1Q on rising transition. |
| 2 | 1D | Data input for first flip-flop - sampled at 1CLK↑ if tsu/th timing constraints are met. |
| 3 | 1Q | Non-inverting output of first flip-flop - reflects latched 1D state after 1CLK↑ with tpd delay. |
| 4 | GND | Digital ground reference - must be low-impedance connection shared with system GND plane. |
| 5 | 2CLK | Positive-edge clock input for second flip-flop - independent timing control from 1CLK. |
| 6 | 2D | Data input for second flip-flop - functionally isolated from first flip-flop's data path. |
| 7 | 2Q | Non-inverting output of second flip-flop - provides synchronized dual-channel storage without cross-talk. |
| 8 | VCC | Power supply input - decoupling capacitor (0.1 µF ceramic) required within 3 mm of this pin. |
Key Features
| Feature | Design Value |
|---|---|
| NanoFree™ packaging | Die-as-package construction eliminates bond wires and mold compound - reduces parasitic inductance and improves thermal response. |
| Ioff circuitry | Automatically disables outputs and isolates I/Os when VCC = 0 V - enables safe live insertion into powered backplanes. |
| 5.5-V tolerant inputs | Accepts input voltages up to 5.5 V regardless of VCC setting - simplifies interfacing with higher-voltage legacy peripherals. |
| Low ground bounce (VOLP) | <0.8 V at VCC = 3.3 V - minimizes noise coupling into shared GND nets during simultaneous output switching. |
| Latch-up immunity | Exceeds 100 mA per JESD 78 Class II - ensures robust operation under transient overvoltage or ESD stress conditions. |
Applications
| Industrial PLC I/O Expansion | Portable USB-C Power Delivery Control |
|---|---|
|
Use Scenario: Synchronizing GPIO status updates from isolated sensor nodes into a central microcontroller via SPI-shifted control words. IC Role / Device Role / Timing Role: Dual DFF latches parallel status bits on rising edges of locally generated clocks, decoupling sensor timing from host timing domain. Use Value: Eliminates metastability risk in multi-clock-domain handshaking while maintaining <4.2 ns timing margin at 160 MHz update rates. |
Use Scenario: Capturing CC line voltage transitions during USB-C port negotiation to determine cable orientation and power role. IC Role / Device Role / Timing Role: Edge-triggered sampling of analog-comparator outputs feeding into PD controller logic, with Ioff enabling safe hot-plug detection. Use Value: Enables deterministic 1.65–5.5 V compatible sampling without external level shifters or isolation switches. |
| Automotive Body Control Module | Test Equipment Digital Pattern Generator |
|
Use Scenario: Debouncing mechanical switch inputs (e.g., door latch, seat position) before feeding into CAN gateway logic. IC Role / Device Role / Timing Role: Positive-edge DFF used as synchronous SR latch replacement - eliminates race conditions in noisy 12-V vehicle environments. Use Value: Provides –40°C to +125°C guaranteed operation with 2000-V HBM ESD protection for under-dash mounting locations. |
Use Scenario: Generating precise, skew-matched clocked stimulus waveforms for IC functional testing using FPGA-controlled pattern memory. IC Role / Device Role / Timing Role: Dual-channel register staging output bits from parallel-loaded test vectors prior to serial transmission. Use Value: Delivers sub-nanosecond inter-channel skew (<0.3 ns typical) and 4.2 ns tpd consistency across temperature and supply variation. |
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 | Includes asynchronous preset and clear inputs; identical DCU package and VCC range but higher ICC (15 µA max). | Suitable where independent set/reset control per flip-flop is required - not drop-in for pure edge-triggered-only use cases. | Select SN74LVC2G74DCUR only if asynchronous initialization is needed; otherwise SN74LVC2G79DCURE4 offers lower static power and smaller die area. |
| 74LVC2G79GW,125 | NXP part in SC-70 (SOT363) package; same logic function and 1.65–5.5 V range but 5.5 ns tpd at 3.3 V and no NanoFree packaging. | Preferred where board space is constrained and thermal performance is secondary to footprint size. | Choose 74LVC2G79GW,125 for ultra-compact layouts; SN74LVC2G79DCURE4 delivers superior speed and thermal efficiency in VSSOP-constrained designs. |
Compared with SN74LVC2G74DCUR and 74LVC2G79GW,125, the SN74LVC2G79DCURE4 provides the lowest propagation delay (4.2 ns), highest output drive (±24 mA), and most thermally efficient package (227°C/W), making it optimal for high-speed, power-sensitive dual-latch applications requiring Ioff support.
Availability
SN74LVC2G79DCURE4 is available at Aetrix Electronics and suitable for industrial automation controllers, automotive body electronics, and portable power delivery systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for SN74LVC2G79DCURE4 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 over 50 years of innovation in high-reliability interface and timing devices.
The SN74LVC2G79 belongs to TI's LVC logic family, designed for low-voltage, high-speed, mixed-signal system interfacing - emphasizing robustness, power efficiency, and seamless voltage-domain bridging in real-world industrial and automotive applications.
FAQ
What is the maximum clock frequency supported by the SN74LVC2G79DCURE4?
The SN74LVC2G79DCURE4 supports a maximum clock frequency of 160 MHz across its full operating range (–40°C to +125°C, VCC = 1.65 V to 5.5 V), verified under CL = 15 pF load conditions with tpd ≤ 4.2 ns at 3.3 V. This rating holds for both flip-flops independently and is not derated for temperature or supply variation.
Does the SN74LVC2G79DCURE4 support partial power-down operation?
Yes, the SN74LVC2G79DCURE4 includes integrated Ioff circuitry that actively disables all outputs and blocks current backflow when VCC = 0 V. This feature is fully specified per JESD 78 and enables safe live insertion into powered systems - a critical requirement for modular backplane and hot-swap applications.
What package type is used for the SN74LVC2G79DCURE4?
The SN74LVC2G79DCURE4 uses the VSSOP (DCU) package: an 8-pin, 2.3 mm × 2.0 mm body with 0.5-mm lead pitch and 0.9-mm maximum height. It complies with JEDEC MO-187 variation CA and is distinct from the SSOP (DCT) and DSBGA (YZP) variants of the same logic function.
Can the SN74LVC2G79DCURE4 interface with 5-V logic systems?
Yes, the SN74LVC2G79DCURE4 accepts input voltages up to 5.5 V regardless of VCC level - meaning it can safely receive 5-V signals while operating from a 1.8-V or 3.3-V supply. Its outputs swing rail-to-rail (VOL/VOH) within the VCC domain, so external level translation is only needed for driving 5-V loads.
Is there a version of the SN74LVC2G79DCURE4 with reset functionality?
No - the SN74LVC2G79DCURE4 implements only basic positive-edge-triggered D-type flip-flops with no asynchronous reset or preset inputs. For reset-capable dual DFFs in the same package, consider the pin-compatible SN74LVC2G74DCUR, which adds active-low asynchronous /CLR and /PRE inputs per channel.
SN74LVC2G79DCURE4 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:
- Obsolete
- 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
SN74LVC2G79DCURE4 FAQ
1.How can I place an order for SN74LVC2G79DCURE4 through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVC2G79DCURE4 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 SN74LVC2G79DCURE4 reliable?
The price and inventory of SN74LVC2G79DCURE4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVC2G79DCURE4 is usually 5 days.
3.What payment methods are accepted for SN74LVC2G79DCURE4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LVC2G79DCURE4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74LVC2G79DCURE4?
SN74LVC2G79DCURE4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LVC2G79DCURE4 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 SN74LVC2G79DCURE4?
For technical support, including SN74LVC2G79DCURE4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVC2G79DCURE4 requirements.
6.How does Aetrix verify that SN74LVC2G79DCURE4 is sourced from the original manufacturer or authorized distributors?
All SN74LVC2G79DCURE4 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 SN74LVC2G79DCURE4 meets industry standards.
7.What is the process for return or replacement of SN74LVC2G79DCURE4?
All SN74LVC2G79DCURE4 units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVC2G79DCURE4, 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 SN74LVC2G79DCURE4 part is unused and in its original packaging.
Return procedure for SN74LVC2G79DCURE4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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