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Texas Instruments SN74AUC2G79YEPR
- Part No.:
- SN74AUC2G79YEPR
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- 8-XFBGA, DSBGA
- Datasheet:
-
SN74AUC2G79YEPR.pdf
- Description:
- IC FF D-TYPE DUAL 1BIT 8DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:4,042
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Product details
Overview
SN74AUC2G79YEPR from Texas Instruments is a dual positive-edge-triggered D-type flip-flop in an 8-pin DSBGA (YZP) package, operating from 0.8 V to 2.7 V with 1.9 ns max propagation delay at 1.8 V, ±8-mA output drive, and Ioff support for partial power-down mode - used in high-speed level-shifting and low-voltage data synchronization circuits.
For engineers reviewing the SN74AUC2G79YEPR datasheet, SN74AUC2G79YEPR pinout, SN74AUC2G79YEPR application, or SN74AUC2G79YEPR equivalent, key selection criteria include sub-1-V operability, 275-MHz max clock frequency at 2.5 V, 10-µA max ICC, 2.5-pF input capacitance, and NanoFree™ WCSP packaging for ultra-compact PCB layouts.
Technical Context
This device integrates two independent D-type flip-flops sharing no internal logic coupling; each triggers strictly on the rising edge of its dedicated clock input (1CLK/2CLK), with setup/hold times as low as 0.5 ns and 0.1 ns respectively at 2.5 V. It supports mixed-mode signal operation via 3.6-V I/O tolerance while powered from 1.8-V VCC.
The Ioff circuitry actively disables outputs during power-down, blocking current backflow, and latch-up performance exceeds 100 mA per JESD 78 Class II. ESD robustness includes 2000-V HBM, 200-V MM, and 1000-V CDM ratings.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 0.8 V to 2.7 V - enables direct interface with sub-1-V logic domains and compatibility with 1.2-V, 1.5-V, and 1.8-V supply rails. |
| tpd (max) | 1.9 ns at 1.8 V - ensures minimal timing skew in high-speed data capture paths such as memory interfaces or serializer/deserializer staging. |
| fmax | 275 MHz at 2.5 V - supports reliable operation in DDR clock forwarding, test pattern generation, and pipeline register stages. |
| IOL / IOH | ±8 mA at 1.65 V - provides sufficient drive strength to fan out to multiple 1.8-V CMOS loads without external buffering. |
| Ioff Support | Active at VCC = 0 V - prevents back-drive damage when SN74AUC2G79YEPR is unpowered but connected to live buses in hot-swap or multi-rail systems. |
| Input Capacitance | 2.5 pF - minimizes loading on preceding drivers and preserves signal integrity in dense, high-frequency routing environments. |
| ESD Rating | 2000-V HBM - meets industrial-grade robustness requirements for board-level handling and end-equipment reliability testing. |
Pinout & Package
SN74AUC2G79YEPR uses the YZP (DSBGA) 8-ball NanoFree™ package - die-as-package construction measuring 1.5 mm × 1.5 mm × 0.5 mm max height, with 0.25-mm pitch, Pb-free SnAgCu solder bumps, and bottom-side ball layout optimized for thermal dissipation and minimal PCB footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 | GND | Ground reference for both flip-flops; must be low-inductance connection to minimize switching noise coupling. |
| A2 | 2CLK | Clock input for second flip-flop; edge-sensitive rising transition only; requires clean, monotonic slew rate ≥20 ns/V. |
| B1 | 2D | Data input for second flip-flop; sampled on 2CLK↑; must meet 0.35×VCC low-level and 0.65×VCC high-level thresholds. |
| B2 | 2Q | True output of second flip-flop; active-high, non-inverting; drives up to ±8 mA into 1.8-V CMOS loads. |
| C1 | 1Q | True output of first flip-flop; electrically isolated from 2Q; shares no internal bus or feedback path. |
| C2 | 1D | Data input for first flip-flop; independent timing domain from 2D; supports asynchronous data staging. |
| D1 | 1CLK | Clock input for first flip-flop; functionally identical to 2CLK but physically separate; allows dual-clock domain synchronization. |
| D2 | VCC | Primary power supply; decoupling capacitor (≥100 nF) required within 2 mm of this ball for stable high-speed operation. |
Key Features
| Feature | Design Value |
|---|---|
| NanoFree™ WCSP packaging | Eliminates traditional leadframe and mold compound - reduces package parasitics, improves thermal resistance (θJA = 102°C/W), and enables <1.5 mm² PCB area usage. |
| Sub-1-V operability | Functional down to 0.8 V VCC - supports integration into emerging ultra-low-power microcontroller subsystems and energy-harvesting sensor nodes. |
| 3.6-V I/O tolerance | Allows safe interfacing with 3.3-V or 2.5-V peripherals while powered from 1.8-V rail - eliminates need for external level shifters in mixed-voltage designs. |
| Ioff partial power-down | Outputs enter high-impedance state when VCC = 0 V - prevents bus contention and back-current flow in modular or hot-pluggable architectures. |
| Low dynamic power | 10-µA max ICC at 25°C - enables use in always-on timing blocks without compromising system-level standby current budgets. |
Applications
| High-Speed Data Capture | Low-Voltage Level Translation |
|---|---|
|
Use Scenario: Capturing parallel sensor data streams from 1.2-V ADCs before serialization into a 1.8-V FPGA interface. IC Role / Device Role / Timing Role: Dual-register staging element synchronizing asynchronous inputs to a common 200-MHz system clock domain. Use Value: 1.9-ns tpd and 0.5-ns tsu at 1.8 V ensure reliable setup capture across temperature and voltage corners without added timing margin. |
Use Scenario: Bridging a 1.2-V microcontroller GPIO bank to a 3.3-V display driver IC in a portable medical monitor. IC Role / Device Role / Timing Role: Bidirectional voltage-tolerant DFF acting as a controlled, edge-triggered level shifter with no DC bias network required. Use Value: 3.6-V I/O tolerance and sub-1-V operation allow direct connection without external resistors or translators - reducing BOM count and layout area. |
| Power-Gated Subsystem Sync | Test Pattern Generation |
|
Use Scenario: Holding configuration bits stable across a processor core that powers down its 1.8-V domain while main logic remains active at 3.3 V. IC Role / Device Role / Timing Role: Retention register maintaining control state during partial power-down using Ioff-enabled isolation. Use Value: Ioff activation at VCC = 0 V blocks >100 µA leakage paths - preserving register state integrity and preventing bus corruption during sleep transitions. |
Use Scenario: Generating deterministic, glitch-free test vectors for boundary-scan validation of a 1.5-V ASIC die. IC Role / Device Role / Timing Role: Two-phase clock divider and pattern sequencer built from cascaded SN74AUC2G79YEPR flip-flops. Use Value: 275-MHz fmax at 2.5 V and 2.5-pF Ci enable clean, jitter-minimized clock distribution to downstream scan chain latches. |
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 |
|---|---|---|---|
| SN74AUP2G79DCUR | Lower ICC (5 µA max), slower tpd (3.2 ns @ 1.2 V), operates down to 0.8 V but optimized for 1.2 V - uses VSSOP-8 (DCU) package. | Better suited for ultra-low-power battery-operated devices where speed <100 MHz is acceptable. | Select when minimizing quiescent current outweighs propagation delay requirements and SSOP footprint is acceptable. |
| SN74LVC2G74DCUR | Wider VCC range (1.65–5.5 V), higher drive (±24 mA), no Ioff, standard LVC logic family - same VSSOP-8 (DCU) package. | Required for 3.3-V or 5-V legacy interfaces; lacks partial power-down capability and sub-1-V operation. | Choose when interfacing with older 3.3-V logic families and Ioff is not needed - avoids redesign of power sequencing. |
Compared with SN74AUC2G79YEPR, SN74AUP2G79DCUR trades speed for lower static power and larger package, while SN74LVC2G74DCUR sacrifices Ioff and sub-1-V operation for broader voltage compatibility and stronger drive - making SN74AUC2G79YEPR uniquely balanced for compact, mixed-voltage, high-speed synchronous design.
Availability
SN74AUC2G79YEPR is available at Aetrix Electronics and suitable for high-density portable electronics, battery-powered IoT endpoints, and low-voltage FPGA interface circuits requiring stable component supply and long-term lifecycle assurance.
Supply support for SN74AUC2G79YEPR 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 high-reliability silicon solutions for industrial, automotive, and communications markets.
The SN74AUC2G79YEPR belongs to TI's AUC logic family - engineered for ultra-high-speed, ultra-low-voltage operation in space-constrained, power-sensitive digital systems.
FAQ
What is the maximum clock frequency supported by SN74AUC2G79YEPR?
SN74AUC2G79YEPR supports up to 275 MHz at VCC = 2.5 V with CL = 30 pF, and 250 MHz at VCC = 1.8 V under the same load. These values are measured per JEDEC standards and reflect guaranteed operation across –40°C to 85°C ambient temperature. The actual usable frequency depends on PCB layout, decoupling, and signal integrity - SN74AUC2G79YEPR's 1.9-ns tpd enables robust timing closure in most 200+ MHz applications.
Does SN74AUC2G79YEPR support partial power-down mode?
Yes, SN74AUC2G79YEPR features Ioff circuitry that places outputs in high-impedance state when VCC = 0 V, preventing damaging current backflow from live I/O lines into the unpowered device. This behavior is verified per JESD 78 Class II latch-up testing and is critical for hot-swap, modular, or multi-rail systems where SN74AUC2G79YEPR may be powered independently of connected peripherals.
What package type is used for SN74AUC2G79YEPR?
SN74AUC2G79YEPR uses the YZP package - an 8-ball, 0.25-mm pitch, Pb-free DSBGA (Die Size Ball Grid Array) with NanoFree™ technology. Its dimensions are 1.5 mm × 1.5 mm × 0.5 mm max height, and it features bottom-side solder bumps for direct die-to-PCB interconnect. This package delivers superior thermal performance (θJA = 102°C/W) and minimal footprint versus SSOP or VSSOP alternatives.
Can SN74AUC2G79YEPR operate below 1.0 V?
Yes, SN74AUC2G79YEPR is fully specified from 0.8 V to 2.7 V VCC, with functional operation confirmed down to 0.8 V. At 0.8 V, it achieves 50 MHz fmax and maintains valid logic thresholds (VIH = 0.55 V, VIL = 0.25 V). This sub-1-V capability makes SN74AUC2G79YEPR suitable for next-generation ultra-low-power microcontrollers and energy-harvesting applications where supply rails dip below 1.0 V.
Is SN74AUC2G79YEPR pin-compatible with other 2G79 variants?
No - SN74AUC2G79YEPR (YZP package) has a bottom-side ball grid layout incompatible with the 8-pin SSOP (DCT) or VSSOP (DCU) variants like SN74AUC2G79DCTR or SN74AUC2G79DCUR. While all share identical logic functionality and pin functions, their physical footprints, solder bump vs. gull-wing lead configurations, and thermal/mechanical mounting requirements differ fundamentally. PCB layout must be redesigned for YZP.
SN74AUC2G79YEPR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74AUC
- Package/Case:
- 8-XFBGA, DSBGA
- 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:
- 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:
- 8-DSBGA
SN74AUC2G79YEPR FAQ
1.How can I place an order for SN74AUC2G79YEPR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74AUC2G79YEPR 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 SN74AUC2G79YEPR reliable?
The price and inventory of SN74AUC2G79YEPR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74AUC2G79YEPR is usually 5 days.
3.What payment methods are accepted for SN74AUC2G79YEPR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74AUC2G79YEPR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74AUC2G79YEPR?
SN74AUC2G79YEPR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74AUC2G79YEPR 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 SN74AUC2G79YEPR?
For technical support, including SN74AUC2G79YEPR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74AUC2G79YEPR requirements.
6.How does Aetrix verify that SN74AUC2G79YEPR is sourced from the original manufacturer or authorized distributors?
All SN74AUC2G79YEPR 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 SN74AUC2G79YEPR meets industry standards.
7.What is the process for return or replacement of SN74AUC2G79YEPR?
All SN74AUC2G79YEPR units undergo pre-shipment inspection (PSI). If there is an issue with SN74AUC2G79YEPR, 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 SN74AUC2G79YEPR part is unused and in its original packaging.
Return procedure for SN74AUC2G79YEPR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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