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Texas Instruments SN74AUC1G74YZTR
- Part No.:
- SN74AUC1G74YZTR
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- -
- Datasheet:
-
SN74AUC1G74YZTR.pdf
- Description:
- D FLIP-FLOP, AUC SERIES
- Quantity:
- Payment:
- Shipping:
Inventory:12,000
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Product details
Overview
SN74AUC1G74YZTR from Texas Instruments is a single positive-edge-triggered D-type flip-flop with asynchronous clear (CLR) and preset (PRE), designed for ultra-low-voltage operation from 0.8 V to 2.7 V, optimized at 1.8 V, delivering 1.5 ns max propagation delay and ±8-mA output drive. It supports mixed-mode signal interfacing, features Ioff partial-power-down protection, and is used in high-speed data synchronization and level-shifting circuits in portable and battery-powered systems.
For engineers reviewing the SN74AUC1G74YZTR datasheet, SN74AUC1G74YZTR pinout, SN74AUC1G74YZTR application, or SN74AUC1G74YZTR equivalent, key selection criteria include sub-1-V operability, 275-MHz max clock frequency at 2.5 V, latch-up immunity >100 mA per JESD 78 Class II, ESD robustness (2000-V HBM), and NanoFree™ WCSP package compatibility with fine-pitch PCB layouts.
Technical Context
This device implements a synchronous edge-triggered storage element with priority-encoded asynchronous control: CLR overrides PRE when both are low, ensuring deterministic reset behavior. Its input thresholds scale with VCC (VIH = 0.65×VCC, VIL = 0.35×VCC), enabling reliable operation across 0.8–2.7 V supply range while maintaining noise margins.
The internal circuitry incorporates Ioff control to disable outputs during power-down, preventing backflow current, and uses advanced AUC logic family architecture to achieve 1.5 ns tpd at 1.8 V with 15 pF load - critical for timing-critical datapath synchronization in low-power FPGAs and microcontrollers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 0.8 V to 2.7 V - enables direct interface with sub-1-V cores and 1.8-V I/O domains without level shifters. |
| tpd (max) | 1.5 ns at 1.8 V, CL = 15 pF - supports >250-MHz clock rates in high-speed serial data capture paths. |
| Output Drive | ±8 mA at 1.8 V - sufficient to drive two 50-Ω transmission lines or multiple CMOS inputs with fast edge rates. |
| Ioff Support | Active at VCC = 0 V - blocks current flow between powered and unpowered rails, essential for hot-swap and multi-rail systems. |
| ESD Rating | 2000-V HBM, 200-V MM, 1000-V CDM - meets industrial-grade robustness requirements without external protection. |
| Latch-Up | >100 mA per JESD 78 Class II - ensures immunity to transient-induced parasitic thyristor conduction in noisy environments. |
| ICC (max) | 10 μA - minimizes quiescent power in always-on logic monitoring and wake-up circuitry. |
Pinout & Package
SN74AUC1G74YZTR uses the YZT variant of Texas Instruments' NanoFree™ WCSP (Wafer Chip Scale Package), an 8-bump DSBGA footprint measuring 1.2 mm × 1.2 mm with 0.4-mm pitch and Pb-free solder bumps. Pin 1 identifier is a dot (•) indicating Pb-free composition.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (CLK) | Clock input | Positive-edge-sensitive trigger; voltage-level sensitive, not slew-rate dependent - immune to slow-rising clocks. |
| 2 (D) | Data input | Stores logic state on CLK↑; requires 0.4 ns setup/hold at 1.8 V - constrains PCB trace matching in high-frequency designs. |
| 3 (PRE) | Asynchronous preset | Active-low; forces Q = H regardless of CLK/D - used for initialization or fault recovery without clock dependency. |
| 4 (GND) | Ground reference | Return path for all I/O and core logic; must be low-inductance connection to minimize ground bounce in switching events. |
| 5 (VCC) | Supply rail | Power for internal logic and output buffers; decoupling capacitor (100 nF) required within 2 mm for stable 275-MHz operation. |
| 6 (Q) | True output | Complementary to Q; fan-out limited by ±8-mA drive and 1.5-ns tpd - defines maximum capacitive load for timing closure. |
| 7 (Q) | Inverted output | Non-inverting complement of Q; provides differential signaling capability for clock distribution or metastability mitigation. |
| 8 (CLR) | Asynchronous clear | Active-low; higher priority than PRE when both asserted - guarantees known state on power-up or error conditions. |
Key Features
| Feature | Design Value |
|---|---|
| NanoFree™ WCSP packaging | Die-as-package construction reduces board area by >70% vs. SSOP, eliminates bond wires, and improves thermal resistance (θJA = 102°C/W). |
| Sub-1-V operability | Functional down to 0.8 V VCC - enables direct integration with emerging ultra-low-power processors and energy-harvesting subsystems. |
| 3.6-V I/O tolerance | Accepts 0–3.6 V input signals at any VCC ≥ 0.8 V - simplifies mixed-voltage interconnect with legacy 3.3-V peripherals. |
| Priority-based asynchronous control | CLR overrides PRE during simultaneous assertion - eliminates race conditions in reset-intensive applications like FPGA configuration. |
| Ioff partial-power-down | Outputs enter high-Z when VCC = 0 V - prevents backdrive damage when interfacing with live buses during power sequencing. |
Applications
| High-Speed Data Synchronization | Low-Power Sensor Interface |
|---|---|
|
Use Scenario: Capturing asynchronous sensor data (e.g., MEMS accelerometer bursts) into a 1.8-V MCU domain with precise timing alignment. IC Role / Device Role / Timing Role: Edge-triggered sampling element that converts asynchronous pulses into synchronous clock-domain signals while suppressing metastability via setup/hold compliance. Use Value: 1.5 ns tpd and 0.4 ns hold time at 1.8 V enable reliable capture of >200-MHz data edges without external synchronizers. |
Use Scenario: Level-shifting and latching wake-up signals from 0.9-V IoT sensor nodes to 1.8-V system controller. IC Role / Device Role / Timing Role: Voltage-scalable DFF acting as both level translator and state-holding element during ultra-low-power sleep modes. Use Value: Sub-1-V operation and Ioff support allow direct connection to partially powered subsystems without isolation switches or leakage paths. |
| FPGA Configuration Sequencing | Portable Display Timing Control |
|
Use Scenario: Generating controlled reset sequences during FPGA configuration to ensure deterministic state initialization across multiple logic banks. IC Role / Device Role / Timing Role: Asynchronous preset/clear generator with priority resolution, triggered by configuration status signals. Use Value: CLR > PRE priority guarantees hard reset dominance, eliminating ambiguous states during brown-out or incomplete bitstream loading. |
Use Scenario: Synchronizing pixel clock enable and frame sync signals in OLED driver ICs operating from shared 1.2-V LDO rails. IC Role / Device Role / Timing Role: Clock-domain crossing buffer isolating display controller timing from variable-frequency GPU clock sources. Use Value: 275-MHz fmax at 2.5 V and 15-pF load tolerance support pixel clock rates up to WXGA@60Hz with margin for jitter accumulation. |
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 |
|---|---|---|---|
| SN74AUP1G74YZPR | Lower ICC (5 μA max), slower tpd (2.5 ns @ 1.2 V), wider VCC range (0.8–3.6 V), same YZP WCSP package. | Better suited for always-on battery monitoring where power <1 μA dominates over speed. | Select SN74AUP1G74YZPR when ultra-low static current outweighs propagation delay requirements. |
| SN74LVC1G74DCKR | Higher VCC min (1.65 V), 32-mA drive, SC70-6 package (larger, 2.0 mm × 1.25 mm), no Ioff support. | Appropriate for 3.3-V legacy interfaces requiring stronger drive but lacking partial-power-down needs. | Choose SN74LVC1G74DCKR only if 3.3-V compatibility and higher drive are mandatory and Ioff is unnecessary. |
Compared with SN74AUC1G74YZTR, SN74AUP1G74YZPR trades speed for lower power in always-on sensing, while SN74LVC1G74DCKR sacrifices Ioff and package size for legacy 3.3-V interoperability - neither offers pin-compatible replacement due to differing bump layouts and electrical priorities.
Availability
SN74AUC1G74YZTR is available at Aetrix Electronics and suitable for high-speed data synchronization, low-power sensor interface, FPGA configuration sequencing, and portable display timing control requiring stable component supply across automotive infotainment, industrial IoT gateways, and medical wearable platforms.
Supply support for SN74AUC1G74YZTR 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 technologies, with over 90 years of innovation in high-reliability, energy-efficient components.
The SN74AUC logic family targets ultra-low-voltage, high-speed digital interfacing - specifically engineered for sub-2-V mobile, portable, and battery-constrained applications demanding nanosecond timing precision and minimal power overhead.
FAQ
What is the minimum operating voltage for SN74AUC1G74YZTR?
The SN74AUC1G74YZTR operates down to 0.8 V VCC, with guaranteed functionality across the full 0.8–2.7 V range. At 0.8 V, it maintains valid logic thresholds (VIH = 0 V, VIL = 0 V) and delivers functional tpd and drive strength, making SN74AUC1G74YZTR suitable for direct coupling to sub-1-V processor cores and energy-harvesting power supplies.
Does SN74AUC1G74YZTR support Ioff, and how does it behave during power-down?
Yes, SN74AUC1G74YZTR fully supports Ioff. When VCC = 0 V, the outputs enter high-impedance state, blocking current flow from live I/O lines into the unpowered device. This prevents damaging back-current in multi-rail systems and enables safe hot-plug operation - a key design feature confirmed in the datasheet's "Ioff Supports Partial-Power-Down Mode" section.
What is the maximum clock frequency supported by SN74AUC1G74YZTR at 1.8 V?
At 1.8 V with CL = 15 pF, SN74AUC1G74YZTR supports a maximum clock frequency of 250 MHz. This value is derived from the 1.5 ns max tpd specification and verified in the Switching Characteristics table under "fclock" parameter. Higher frequencies (up to 275 MHz) are achievable at 2.5 V, but SN74AUC1G74YZTR's optimization point remains 1.8 V.
How does the priority logic between PRE and CLR work in SN74AUC1G74YZTR?
In SN74AUC1G74YZTR, CLR has higher priority than PRE: when both are low, the output is forced to Q = L and Q = H regardless of D or CLK state. This behavior is explicitly defined in the Function Table and reinforced in the Description section ("CLR input overrides the PRE input when they are both low"), ensuring deterministic reset dominance in safety-critical initialization sequences.
Is SN74AUC1G74YZTR pin-compatible with other packages of the same part number, such as DCT or DCU?
No, SN74AUC1G74YZTR is not pin-compatible with DCT, DCU, or RSE variants. Although all share identical logic function and 8-terminal assignment, the YZT WCSP uses a bottom-side bump layout (with pin 1 marked by •), whereas DCT/DCU/RSE use top-side leads with different physical pin orders. PCB layout must be redesigned for each package - confirmed by TI's mechanical drawings and Package Option Addendum.
SN74AUC1G74YZTR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Function:
- -
- Type:
- -
- Output Type:
- -
- Number of Elements:
- -
- Number of Bits per Element:
- -
- Clock Frequency:
- -
- Max Propagation Delay @ V, Max CL:
- -
- Trigger Type:
- -
- Current - Output High, Low:
- -
- Voltage - Supply:
- -
- Current - Quiescent (Iq):
- -
- Input Capacitance:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
SN74AUC1G74YZTR FAQ
1.How can I place an order for SN74AUC1G74YZTR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74AUC1G74YZTR 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 SN74AUC1G74YZTR reliable?
The price and inventory of SN74AUC1G74YZTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74AUC1G74YZTR is usually 5 days.
3.What payment methods are accepted for SN74AUC1G74YZTR?
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4.How is shipping managed for SN74AUC1G74YZTR?
SN74AUC1G74YZTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74AUC1G74YZTR 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 SN74AUC1G74YZTR?
For technical support, including SN74AUC1G74YZTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74AUC1G74YZTR requirements.
6.How does Aetrix verify that SN74AUC1G74YZTR is sourced from the original manufacturer or authorized distributors?
All SN74AUC1G74YZTR 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 SN74AUC1G74YZTR meets industry standards.
7.What is the process for return or replacement of SN74AUC1G74YZTR?
All SN74AUC1G74YZTR units undergo pre-shipment inspection (PSI). If there is an issue with SN74AUC1G74YZTR, 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 SN74AUC1G74YZTR part is unused and in its original packaging.
Return procedure for SN74AUC1G74YZTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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