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Texas Instruments SN74LVC1G79DCKRE4
- Part No.:
- SN74LVC1G79DCKRE4
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
SN74LVC1G79DCKRE4.pdf
- Description:
- IC FF D-TYPE SNGL 1BIT SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,652
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Product details
Overview
SN74LVC1G79DCKRE4 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, low-power data latch in voltage-translating digital interfaces.
For engineers reviewing the SN74LVC1G79DCKRE4 datasheet, SN74LVC1G79DCKRE4 pinout, SN74LVC1G79DCKRE4 application, or SN74LVC1G79DCKRE4 equivalent, key selection criteria include its 5-pin SC70 package, 160MHz max clock frequency, 1.3ns min setup time at 3.3V, 0.5ns max hold time, and guaranteed data retention down to 1.5V VCC.
Technical Context
This device implements a synchronous edge-triggered storage element with CMOS-compatible inputs that accept voltages up to 5.5V independent of VCC, enabling level-shifting between 1.8V, 2.5V, 3.3V, and 5V domains. Its balanced push-pull outputs support bidirectional drive capability without external biasing.
The Ioff circuitry actively disables all I/O terminals when VCC = 0V, preventing back-drive current and enabling safe hot-insertion in multi-rail systems. Clock triggering occurs at a fixed voltage threshold-not dependent on slew rate-ensuring robust timing across varying input edge rates.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 1.65V to 5.5V - supports mixed-voltage system interfacing and battery-backed operation down to 1.5V for data retention |
| tpd (max) | 6ns at 3.3V/50pF - enables reliable operation in high-speed control loops and sampling circuits up to 160MHz |
| Output Drive | ±24mA at 3.3V - drives standard CMOS loads directly without buffering; sufficient for fanout ≥10 into 50pF |
| Ioff Leakage | ±10µA max - ensures <1µA total system leakage during partial power-down, critical for ultra-low-power sleep modes |
| Input Voltage Range | 0V to 5.5V - allows interfacing with higher-voltage logic without external level shifters or clamping diodes |
| tsu / th (3.3V) | 1.3ns / 0.5ns - tight timing window enables precise synchronization in FPGA-adjacent glue logic and test instrumentation |
| ICC (max) | 10µA - eliminates measurable static power impact in always-on monitoring nodes and sensor interface chains |
Pinout & Package
SN74LVC1G79DCKRE4 uses the 5-pin SC70 (DCK) package: 2.00mm × 2.10mm footprint, 0.65mm pitch, bottom-side thermal pad optional. This ultra-compact package supports high-density routing in space-constrained portable and telecom modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - D | Data input | CMOS-compatible input accepting 0–5.5V; latched on CLK↑ edge if setup/hold times met |
| 2 - CLK | Clock input | Positive-edge-triggered; voltage-threshold-based triggering decouples timing from input slew rate |
| 3 - GND | Ground reference | Primary return path for all internal logic and output currents; must be low-impedance |
| 4 - Q | Non-inverted output | Push-pull CMOS output sourcing/sinking ±24mA; no external pull-up required |
| 5 - VCC | Power supply | Supplies core logic and I/O; powers Ioff circuitry to disable I/O when VCC = 0V |
Key Features
| Feature | Design Value |
|---|---|
| NanoFree™ packaging | Dies-as-package construction eliminates bond wires and mold compound, reducing parasitic inductance by >30% vs SOT-23 |
| Ioff partial-power-down | Disables all I/Os at VCC = 0V, blocking back-drive current to prevent damage in hot-swap or multi-supply systems |
| Over-voltage tolerant inputs | Accepts 5.5V signals regardless of VCC (1.65–5.5V), eliminating need for external level translators in mixed-voltage designs |
| Low ICC and Cpd | 10µA max ICC + 27pF typical Cpd at 3.3V enables sub-100µW dynamic power at 1MHz clocking |
| Guaranteed data retention | Maintains Q state during VCC dips to 1.5V - verified for use in brown-out resilient MCU peripheral latching |
Applications
| Test & Measurement Signal Capture | Enterprise Switching Control Logic |
|---|---|
Use Scenario: Capturing transient digital signals from high-speed probes or FPGA debug ports using microcontroller GPIO clocks. IC Role / Device Role / Timing Role: Single-bit synchronous latch synchronizing asynchronous input edges to a clean system clock domain. Use Value: 6ns tpd and 1.3ns tsu enable accurate capture of >100MHz toggling signals without metastability-induced glitches. |
Use Scenario: Configuring port enable/disable states in multi-layer Ethernet switches where control lines must remain stable during power sequencing. IC Role / Device Role / Timing Role: Glue logic holding configuration bits across power rail transitions in 1.8V/3.3V domain-crossing switch ASIC interfaces. Use Value: Ioff and 1.5V data retention guarantee bit integrity during partial power-down sequences and brown-out events. |
| Telecom Infrastructure Timing | Personal Electronics Power Sequencing |
Use Scenario: Latching status flags from baseband processors to RF front-end controllers in 5G small cells operating across temperature extremes. IC Role / Device Role / Timing Role: Edge-triggered storage element providing deterministic setup/hold margins under –40°C to +125°C ambient conditions. Use Value: 160MHz fmax and validated timing at 125°C ensure reliable operation in thermally stressed outdoor radio units. |
Use Scenario: Holding boot-mode configuration (e.g., USB host/device select) in smartphones and wearables during cold-start sequences. IC Role / Device Role / Timing Role: Low-leakage D-flip-flop retaining user-selected mode across deep-sleep cycles powered by coin-cell backup. Use Value: 10µA max ICC and 1.5V data retention extend battery life while preserving user intent across weeks of 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 |
|---|---|---|---|
| SN74LVC1G74DCKRE4 | Dual D-type flip-flop in same SC70-5 package; double the logic density but shares VCC/GND pins | Requires both flip-flop sections; unsuitable when only one latch is needed due to unused gate leakage and layout overhead | Select when dual-latch functionality is required and board area permits identical footprint reuse |
| 74LVC1G80GV,125 | Single D-type flip-flop in SOT886 (5-pin XSON); 1.25mm × 1.0mm size; 10ns tpd at 3.3V | Smaller footprint but slower timing; lacks Ioff and 5.5V input tolerance; rated only to 85°C | Choose for ultra-compact consumer designs where speed and extended temperature are non-critical |
Compared with SN74LVC1G79DCKRE4, SN74LVC1G74DCKRE4 offers functional duplication in identical packaging but increases static power if one section remains idle, while 74LVC1G80GV,125 trades performance and ruggedness for minimal size-making SN74LVC1G79DCKRE4 optimal for industrial-grade timing-critical latching.
Availability
SN74LVC1G79DCKRE4 is available at Aetrix Electronics and suitable for test and measurement signal capture, enterprise switching control logic, and telecom infrastructure timing requiring stable component supply across extended temperature and voltage ranges.
Supply support for SN74LVC1G79DCKRE4 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 digital interface components.
SN74LVC1G79DCKRE4 belongs to TI's LVC low-voltage CMOS logic family, engineered for voltage translation, signal conditioning, and robust data latching in mixed-supply systems from portable electronics to industrial automation.
FAQ
What is the maximum clock frequency supported by SN74LVC1G79DCKRE4?
SN74LVC1G79DCKRE4 supports a maximum clock frequency of 160MHz across its full operating temperature range (–40°C to +125°C) and supply voltage range (1.65V to 5.5V), as verified in timing characterization with 30pF and 50pF loads. This rating holds under worst-case process/voltage/temperature corners and is not derated for temperature.
Does SN74LVC1G79DCKRE4 support level shifting between different supply voltages?
Yes, SN74LVC1G79DCKRE4 supports true bidirectional level shifting: its inputs accept voltages up to 5.5V regardless of VCC (1.65V–5.5V), and its outputs swing rail-to-rail between GND and the applied VCC. This enables direct interfacing between 1.8V, 2.5V, 3.3V, and 5V logic domains without external components.
What is the purpose of the Ioff feature in SN74LVC1G79DCKRE4?
The Ioff feature in SN74LVC1G79DCKRE4 disables all input and output terminals when VCC = 0V, limiting leakage current to ±10µA. This prevents back-drive current from other powered rails into the unpowered device-critical for hot-swap compliance, partial power-down sequencing, and system-level fault isolation in multi-supply designs.
Can SN74LVC1G79DCKRE4 retain its output state during brief power interruptions?
Yes, SN74LVC1G79DCKRE4 guarantees data retention down to VCC = 1.5V. When VCC drops to 1.5V (e.g., during brown-out), the Q output maintains its last latched state and resumes normal operation upon VCC recovery-verified in TI's application testing and documented in Figure 8-2 of the datasheet.
What package type is used for SN74LVC1G79DCKRE4 and what are its key mechanical attributes?
SN74LVC1G79DCKRE4 uses the SC70-5 (DCK) package: 2.00mm × 2.10mm body size, 0.65mm lead pitch, and 0.95mm max height. It features gull-wing leads compatible with standard reflow profiles (MSL Level-1), and its NanoFree™ construction places the silicon die directly in the package cavity-reducing parasitic inductance versus traditional wire-bonded SOT-23 variants.
SN74LVC1G79DCKRE4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVC
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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 ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-5
SN74LVC1G79DCKRE4 FAQ
1.How can I place an order for SN74LVC1G79DCKRE4 through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVC1G79DCKRE4 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 SN74LVC1G79DCKRE4 reliable?
The price and inventory of SN74LVC1G79DCKRE4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVC1G79DCKRE4 is usually 5 days.
3.What payment methods are accepted for SN74LVC1G79DCKRE4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LVC1G79DCKRE4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74LVC1G79DCKRE4?
SN74LVC1G79DCKRE4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LVC1G79DCKRE4 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 SN74LVC1G79DCKRE4?
For technical support, including SN74LVC1G79DCKRE4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVC1G79DCKRE4 requirements.
6.How does Aetrix verify that SN74LVC1G79DCKRE4 is sourced from the original manufacturer or authorized distributors?
All SN74LVC1G79DCKRE4 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 SN74LVC1G79DCKRE4 meets industry standards.
7.What is the process for return or replacement of SN74LVC1G79DCKRE4?
All SN74LVC1G79DCKRE4 units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVC1G79DCKRE4, 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 SN74LVC1G79DCKRE4 part is unused and in its original packaging.
Return procedure for SN74LVC1G79DCKRE4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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