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Texas Instruments SN74LVC1G79YEAR
- Part No.:
- SN74LVC1G79YEAR
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- 5-XFBGA, DSBGA
- Datasheet:
-
SN74LVC1G79YEAR.pdf
- Description:
- IC FF D-TYPE SNGL 1BIT 5DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:60,000
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Product details
Overview
SN74LVC1G79YEAR from Texas Instruments is a single positive-edge-triggered D-type flip-flop designed for 1.65V to 5.5V operation, delivering 6ns max propagation delay at 3.3V/50pF, ±24mA output drive, and Ioff-enabled partial-power-down protection. It serves as a compact data latch in low-voltage digital control paths, such as GPIO-expansion interfaces in portable electronics and power-glitch-resilient state retention circuits.
For engineers reviewing the SN74LVC1G79YEAR datasheet, SN74LVC1G79YEAR pinout, SN74LVC1G79YEAR application, or SN74LVC1G79YEAR equivalent, key selection criteria include its 5-pin SOT-23 (DBV) package, 160MHz max clock frequency, 1.3ns min setup time at 3.3V, 0.5ns max hold time at 5V, and guaranteed data retention down to 1.5V VCC - critical for battery-backed or brownout-tolerant designs.
Technical Context
The SN74LVC1G79YEAR implements a standard CMOS D-flip-flop architecture with voltage-level–based clock triggering, decoupling timing behavior from input slew rate. Its logic diagram confirms non-inverting Q output and no reset/set pins - strictly edge-triggered storage with no asynchronous controls.
It features balanced push-pull outputs, over-voltage tolerant inputs (up to 5.5V regardless of VCC), and Ioff circuitry that disables all I/Os during power-down to prevent back-drive current. These traits enable safe level translation and hot-insertion compatibility in mixed-voltage systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 1.65V to 5.5V - supports direct interface with 1.8V, 2.5V, 3.3V, and 5V logic domains without level shifters. |
| tpd (max) | 6ns at 3.3V/50pF - enables reliable operation in high-speed control loops up to 160MHz clock frequency. |
| Output Drive | ±24mA at 3.3V - sufficient to directly drive multiple LVC inputs or small capacitive loads without buffering. |
| Ioff Leakage | ±10µA max - ensures robust isolation during partial power-down, preventing back-current damage in subsystem sleep modes. |
| Data Retention | Down to 1.5V VCC - maintains Q-state through brief supply dips, eliminating need for external backup latches in low-power MCU peripherals. |
| ESD Rating | ±2000V HBM - meets industrial-grade ESD immunity requirements without additional protection circuitry. |
| Input Voltage Tolerance | Up to 5.5V independent of VCC - allows interfacing with higher-voltage signals while powered from lower rails (e.g., 1.8V). |
Pinout & Package
SN74LVC1G79YEAR is packaged in the 5-pin SOT-23 (DBV) NanoFree™ package (2.90mm × 2.80mm), where the silicon die serves as the package substrate - minimizing footprint and thermal resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - D | Data input | CMOS input accepting 0–5.5V; must meet tsu = 1.2ns (min) before CLK↑ at 3.3V to guarantee state capture. |
| 2 - CLK | Clock input | Positive-edge-triggered; threshold-based (not slew-dependent); requires tw ≥ 2.5ns pulse width at all VCC levels. |
| 3 - GND | Ground reference | Return path for all internal logic and output currents; must be low-impedance to maintain noise margin and timing integrity. |
| 4 - Q | Non-inverted output | Push-pull CMOS output; drives high/low actively; supports fan-out to ≥10 LVC loads at 3.3V. |
| 5 - VCC | Power supply | Supplies core logic and output drivers; requires local 0.1µF bypass capacitor to suppress switching noise and ensure stable tpd. |
Key Features
| Feature | Design Value |
|---|---|
| NanoFree™ packaging | Die-as-package construction reduces board area by >50% vs. standard SOT-23, enabling ultra-compact PCB layouts in space-constrained modules. |
| Ioff partial-power-down | Automatically places D, CLK, and Q in high-Z when VCC = 0V - eliminates back-drive risk during hot-swap or multi-rail sequencing. |
| Over-voltage tolerant inputs | Accepts 5.5V signals while operating at 1.65V VCC - enables direct connection to legacy 5V buses without external translators. |
| Low ICC | 10µA max quiescent current - minimizes standby power in always-on monitoring circuits and battery-powered edge nodes. |
| Guaranteed data retention | Maintains Q-state at VCC ≥ 1.5V - provides fail-safe memory hold during microsecond-scale brownouts in automotive body-control modules. |
Applications
| Test & Measurement Signal Capture | Enterprise Switching Control Logic |
|---|---|
|
Use Scenario: Capturing transient digital signals from sensor interfaces or bus analyzers using microcontroller GPIO clocks. IC Role / Device Role / Timing Role: Single-bit edge-triggered latch synchronizing asynchronous input edges to system clock domain. Use Value: 6ns tpd and 160MHz fclock enable precise timestamping of fast pulses; Ioff prevents signal corruption during instrument power cycling. |
Use Scenario: Holding configuration states for PHY port enable/disable in 10/100/1000BASE-T switch ASICs. IC Role / Device Role / Timing Role: Glue logic element storing link-up/down status between management CPU and physical layer controllers. Use Value: 1.5V data retention ensures port state persistence during brief VCC dips caused by PoE negotiation transients. |
| Telecom Infrastructure Timing Buffer | Personal Electronics Power Sequencing |
|
Use Scenario: Isolating clock-domain crossing between baseband processor and RF front-end in small-cell radios. IC Role / Device Role / Timing Role: Synchronizing control bits (e.g., TX/RX enable) across voltage-isolated domains with different rail voltages. Use Value: 5.5V-tolerant inputs accept 3.3V control signals while operating at 1.8V, reducing BOM count versus discrete level shifters. |
Use Scenario: Latching power-on reset states in wearables and Bluetooth earbuds with aggressive low-power modes. IC Role / Device Role / Timing Role: Nonvolatile state keeper preserving user-configured modes (e.g., ANC on/off) during deep-sleep cycles. Use Value: NanoFree™ DBV package fits within 3mm² PCB area budgets; 10µA ICC extends battery life beyond 30 days in standby. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar D-type flip-flop applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC1G74YEAR | Dual D-flip-flop in same DBV package; double the logic density but fixed dual-channel topology. | Requires both flip-flops; unsuitable when only single-bit storage is needed due to unused channel leakage and layout overhead. | Select SN74LVC1G74YEAR only when dual-latch functionality is required - avoids doubling component count in multi-signal systems. |
| 74LVC1G80GW,125 | Single D-type flip-flop in SC70-5 package; identical electrical specs but 2.0mm × 2.1mm footprint and 125°C rating. | Better thermal performance in high-ambient environments (e.g., enclosed telecom enclosures), but larger pad layout than DBV. | Choose 74LVC1G80GW,125 for extended temperature operation; SN74LVC1G79YEAR remains optimal for space-constrained 85°C designs. |
Compared with SN74LVC1G74YEAR and 74LVC1G80GW,125, the SN74LVC1G79YEAR offers the smallest footprint (2.90mm × 2.80mm), lowest layout overhead for single-bit use cases, and verified 1.5V data retention - making it the preferred choice for miniaturized, low-power, single-latch implementations.
Availability
SN74LVC1G79YEAR is available at Aetrix Electronics and suitable for test and measurement instrumentation, enterprise switching control logic, and personal electronics power sequencing requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for SN74LVC1G79YEAR 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, low-power digital ICs.
The SN74LVC1G79YEAR belongs to TI's LVC (Low-Voltage CMOS) logic family, engineered for voltage-flexible, space-efficient signal conditioning and data synchronization in portable, industrial, and communications equipment.
FAQ
What is the maximum clock frequency supported by the SN74LVC1G79YEAR?
The SN74LVC1G79YEAR supports a maximum clock frequency of 160MHz across its full operating range (–40°C to +125°C) and all valid VCC levels (1.65V to 5.5V), as confirmed by timing characterization with CL = 15pF, 30pF, and 50pF loads. This rating holds under worst-case process/voltage/temperature corners.
Does the SN74LVC1G79YEAR retain its output state during brief VCC drops?
Yes, the SN74LVC1G79YEAR guarantees data retention - maintaining the Q output state - down to VCC = 1.5V. Below 1.5V, retention is not specified. This behavior is validated per TI's application note and Figure 8-2 in the official datasheet, supporting robust operation during power glitches in battery-powered systems.
Can the SN74LVC1G79YEAR inputs safely accept 5V signals when powered from 1.8V?
Yes, the SN74LVC1G79YEAR inputs are over-voltage tolerant up to 5.5V regardless of VCC level. When operating at 1.8V, the D and CLK pins accept 0–5.5V input voltages without damage or functional degradation - enabling direct interfacing with 5V legacy peripherals without external level-shifting components.
What package type is used for the SN74LVC1G79YEAR?
The SN74LVC1G79YEAR uses the 5-pin SOT-23 (DBV) NanoFree™ package, measuring 2.90mm × 2.80mm. This die-as-package construction eliminates traditional leadframe and mold compound, reducing thickness and thermal resistance while maximizing board-area efficiency.
How does the Ioff feature function in the SN74LVC1G79YEAR?
The Ioff feature in the SN74LVC1G79YEAR disables all inputs and outputs (D, CLK, Q) when VCC = 0V, limiting leakage current to ±10µA max. This prevents back-drive current from live signal lines into a powered-down subsystem - protecting both the SN74LVC1G79YEAR and upstream drivers during hot-swap or multi-rail power sequencing events.
SN74LVC1G79YEAR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVC
- Package/Case:
- 5-XFBGA, DSBGA
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Function:
- Standard
- Type:
- D-Type
- Output Type:
- Non-Inverted
- Number of Elements:
- 1
- 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):
- 10 µA
- Input Capacitance:
- 4 pF
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 5-DSBGA (1.4x0.9)
SN74LVC1G79YEAR FAQ
1.How can I place an order for SN74LVC1G79YEAR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVC1G79YEAR 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 SN74LVC1G79YEAR reliable?
The price and inventory of SN74LVC1G79YEAR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVC1G79YEAR is usually 5 days.
3.What payment methods are accepted for SN74LVC1G79YEAR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LVC1G79YEAR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74LVC1G79YEAR?
SN74LVC1G79YEAR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LVC1G79YEAR 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 SN74LVC1G79YEAR?
For technical support, including SN74LVC1G79YEAR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVC1G79YEAR requirements.
6.How does Aetrix verify that SN74LVC1G79YEAR is sourced from the original manufacturer or authorized distributors?
All SN74LVC1G79YEAR 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 SN74LVC1G79YEAR meets industry standards.
7.What is the process for return or replacement of SN74LVC1G79YEAR?
All SN74LVC1G79YEAR units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVC1G79YEAR, 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 SN74LVC1G79YEAR part is unused and in its original packaging.
Return procedure for SN74LVC1G79YEAR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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