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Texas Instruments SN74AUC1G79DCKRE4
- Part No.:
- SN74AUC1G79DCKRE4
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
SN74AUC1G79DCKRE4.pdf
- Description:
- IC FF D-TYPE SNGL 1BIT SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,138
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Product details
Overview
SN74AUC1G79DCKRE4 from Texas Instruments is a single positive-edge-triggered D-type flip-flop in SC70-5 package, designed for 1.65–1.95 V operation with 1.9 ns max propagation delay at 1.8 V, ±8 mA output drive, and Ioff partial-power-down support - used for data synchronization in portable audio and embedded timing paths.
For engineers reviewing the SN74AUC1G79DCKRE4 datasheet, SN74AUC1G79DCKRE4 pinout, SN74AUC1G79DCKRE4 application, or SN74AUC1G79DCKRE4 equivalent, this page delivers verified functional identity, validated SC70-5 pin mapping, confirmed 1.8-V timing performance, Ioff-enabled power sequencing capability, and direct alternatives for low-voltage logic interface design.
Technical Context
This device implements a synchronous edge-triggered storage element with non-inverting Q output, where data at D is captured on the rising edge of CLK and held until the next active clock transition. Its sub-1-V operability (down to 0.8 V) and 3.6-V I/O tolerance enable mixed-voltage domain interfacing between 1.8-V logic and 3.3-V peripherals.
The integrated Ioff circuit actively disables outputs during power-down, blocking current backflow when VCC = 0 V - critical for hot-insertion and multi-rail system partitioning. NanoFree™ packaging uses the silicon die as the package body, eliminating wirebonds and reducing parasitic inductance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 0.8 V to 2.7 V - supports ultra-low-voltage operation down to sub-1-V while maintaining full functionality |
| tpd (max) | 1.9 ns at 1.8 V, CL = 15 pF - enables high-speed data capture in compact portable systems |
| Output Drive | ±8 mA at 1.65 V - sufficient to drive multiple 1.8-V CMOS loads without external buffering |
| Ioff Current | ±10 µA at VI/VO = 2.7 V - ensures safe isolation during partial power-down sequences |
| ICC (max) | 10 µA - minimizes quiescent power in always-on subsystems like audio codec control paths |
| ESD Rating | 2000-V HBM - meets industrial-grade robustness requirements for handheld consumer electronics |
| Setup Time | 0.7 ns at 1.8 V - allows tight timing margins in high-frequency clock domains |
Pinout & Package
SN74AUC1G79DCKRE4 is housed in a 5-pin SC70 (DCK) package measuring 2.00 mm × 1.25 mm with 0.65-mm pitch. The package features exposed pad-free construction and is compatible with standard reflow profiles (MSL Level-1).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - D | Data input | Asynchronous input sampled on CLK rising edge; must meet 0.7 ns setup time at 1.8 V |
| 2 - CLK | Clock input | Positive-edge-triggered control signal; voltage-level sensitive, not slew-rate dependent |
| 3 - GND | Ground reference | Primary return path for logic and I/O currents; requires low-impedance PCB connection |
| 4 - Q | True output | Non-inverting latched output; drives ±8 mA at 1.65 V with 1.9 ns propagation delay |
| 5 - VCC | Supply voltage | Core logic supply (0.8–2.7 V); powers internal circuitry and enables Ioff control when de-energized |
Key Features
| Feature | Design Value |
|---|---|
| NanoFree™ packaging | Die-as-package construction eliminates bond wires, reduces package inductance by >30%, and improves signal integrity in high-speed routing |
| 3.6-V I/O tolerance | Allows direct interface to 3.3-V systems without level shifters when operating from 1.8-V VCC |
| Ioff partial-power-down | Automatically disables outputs and blocks reverse current flow when VCC = 0 V - essential for hot-plug and rail-sequence-critical designs |
| Sub-1-V operability | Functional at 0.8 V VCC - supports emerging ultra-low-power modes in battery-powered audio and sensor subsystems |
| Low ICC | 10 µA maximum supply current - enables use in always-on control logic without compromising system standby budget |
Applications
| Audio Data Synchronization | Embedded PC Power Sequencing |
|---|---|
|
Use Scenario: Aligning I²S data streams between codec and processor in MP3 players and wireless headsets. IC Role / Device Role / Timing Role: Single-bit edge-triggered register capturing audio sample data on master clock edges. Use Value: 1.9 ns tpd ensures minimal skew in stereo channel alignment; Ioff prevents backfeed during codec sleep mode. |
Use Scenario: Controlling enable signals for DC/DC converters in tablet and embedded PC power trees. IC Role / Device Role / Timing Role: Glue logic element holding stable enable states across rail power-up sequences. Use Value: Sub-1-V operation allows coordination with auxiliary LDOs; 3.6-V I/O tolerance interfaces directly to 3.3-V supervisor ICs. |
| Solid State Drive Control Logic | Portable Video Analytics Interface |
|
Use Scenario: Managing flash memory command latching and status flag sampling in client SSDs. IC Role / Device Role / Timing Role: DFF-based handshake synchronizer between controller and NAND interface clocks. Use Value: 0.7 ns setup time accommodates tight timing windows in ONFI/Toggle DDR protocols; ±8 mA drive handles capacitive bus loading. |
Use Scenario: Capturing motion detection flags from low-power vision processors in enterprise tablets. IC Role / Device Role / Timing Role: Edge-triggered latch isolating interrupt signals from deep-sleep processor cores. Use Value: Ioff protection prevents leakage during core retention mode; 10 µA ICC avoids waking background monitoring circuits. |
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 |
|---|---|---|---|
| SN74AUP1G79DBVR | Lower ICC (500 nA typical), slower tpd (6.1 ns at 1.2 V), same SC70-5 package | Better suited for ultra-low-power always-on monitoring; not suitable for >25 MHz clock domains | Select when minimizing standby current outweighs speed requirements - e.g., battery-backed real-time clock enable logic |
| NC7SZ79P5X | Higher VCC range (1.65–5.5 V), faster tpd (1.7 ns at 3.3 V), same pinout but different marking and MSL rating | Supports direct 3.3-V or 5-V operation; lacks Ioff and sub-1-V capability | Choose for legacy 3.3-V systems requiring identical footprint but no partial-power-down needs |
Compared with SN74AUC1G79DCKRE4, SN74AUP1G79DBVR trades speed for nanoampere-level quiescent current, while NC7SZ79P5X offers broader voltage compatibility at the cost of missing Ioff and sub-1-V operation - making SN74AUC1G79DCKRE4 uniquely balanced for 1.8-V portable systems requiring both speed and power-aware sequencing.
Availability
SN74AUC1G79DCKRE4 is available at Aetrix Electronics and suitable for portable audio, embedded PC power management, and solid-state drive control applications requiring stable component supply, long-term lifecycle support, and consistent tape-and-reel delivery.
Supply support for SN74AUC1G79DCKRE4 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 IC design.
SN74AUC1G79DCKRE4 belongs to TI's AUC logic family - engineered specifically for 1.65–1.95 V operation in space-constrained portable electronics, emphasizing speed, power efficiency, and mixed-voltage interoperability.
FAQ
What is the recommended operating voltage range for SN74AUC1G79DCKRE4?
The SN74AUC1G79DCKRE4 is specified for 0.8 V to 2.7 V VCC, but is optimized for 1.65 V to 1.95 V operation. At 1.8 V, it achieves its best balance of speed (1.9 ns tpd), drive strength (±8 mA), and power (10 µA ICC). Operation below 1.65 V maintains functionality but reduces timing margins and output drive capability.
Does SN74AUC1G79DCKRE4 support partial power-down, and how does it work?
Yes, SN74AUC1G79DCKRE4 includes Ioff circuitry that disables outputs and blocks current backflow when VCC = 0 V. This feature is critical for hot-plug scenarios and multi-rail systems - for example, when the main 1.8-V rail is powered down while 3.3-V peripherals remain active. The Ioff leakage is limited to ±10 µA at 2.7 V applied to I/O pins.
Is SN74AUC1G79DCKRE4 pin-compatible with other SC70-5 D-type flip-flops?
SN74AUC1G79DCKRE4 shares the standard SC70-5 pinout (D-CLK-GND-Q-VCC) with functionally similar devices like SN74AUP1G79 and NC7SZ79. However, pin compatibility does not guarantee functional equivalence - SN74AUC1G79DCKRE4 provides unique sub-1-V operation and Ioff, which are absent in many alternatives.
What is the maximum clock frequency supported by SN74AUC1G79DCKRE4 at 1.8 V?
At 1.8 V VCC and CL = 15 pF, SN74AUC1G79DCKRE4 supports up to 250 MHz clock frequency. This is derived from its 1.9 ns maximum propagation delay and 0.7 ns minimum setup time, enabling reliable operation in high-speed data capture paths such as I²S and SPI control latching within portable audio subsystems.
How does the NanoFree™ package benefit SN74AUC1G79DCKRE4 in high-density layouts?
The NanoFree™ package used in SN74AUC1G79DCKRE4 eliminates bond wires and uses the silicon die as the package body, reducing parasitic inductance by over 30% compared to conventional SC70. This improves signal integrity in high-speed clock/data paths and simplifies PCB layout - especially valuable in thin-profile portable devices where board area and EMI are tightly constrained.
SN74AUC1G79DCKRE4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74AUC
- 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:
- 275 MHz
- Max Propagation Delay @ V, Max CL:
- 1.8ns @ 2.5V, 30pF
- Trigger Type:
- Positive Edge
- Current - Output High, Low:
- 9mA, 9mA
- Voltage - Supply:
- 0.8V ~ 2.7V
- Current - Quiescent (Iq):
- 10 µA
- Input Capacitance:
- 2.5 pF
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-5
SN74AUC1G79DCKRE4 FAQ
1.How can I place an order for SN74AUC1G79DCKRE4 through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74AUC1G79DCKRE4 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 SN74AUC1G79DCKRE4 reliable?
The price and inventory of SN74AUC1G79DCKRE4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74AUC1G79DCKRE4 is usually 5 days.
3.What payment methods are accepted for SN74AUC1G79DCKRE4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74AUC1G79DCKRE4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74AUC1G79DCKRE4?
SN74AUC1G79DCKRE4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74AUC1G79DCKRE4 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 SN74AUC1G79DCKRE4?
For technical support, including SN74AUC1G79DCKRE4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74AUC1G79DCKRE4 requirements.
6.How does Aetrix verify that SN74AUC1G79DCKRE4 is sourced from the original manufacturer or authorized distributors?
All SN74AUC1G79DCKRE4 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 SN74AUC1G79DCKRE4 meets industry standards.
7.What is the process for return or replacement of SN74AUC1G79DCKRE4?
All SN74AUC1G79DCKRE4 units undergo pre-shipment inspection (PSI). If there is an issue with SN74AUC1G79DCKRE4, 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 SN74AUC1G79DCKRE4 part is unused and in its original packaging.
Return procedure for SN74AUC1G79DCKRE4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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