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Texas Instruments SN74AUC16374DGGR
- Part No.:
- SN74AUC16374DGGR
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- 48-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
SN74AUC16374DGGR.pdf
- Description:
- IC FF D-TYPE DUAL 8BIT 48TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,016
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Product details
Overview
SN74AUC16374 from Texas Instruments is a 16-bit edge-triggered D-type flip-flop with 3-state outputs, designed for 1.65-V to 1.95-V operation and 3.6-V I/O tolerant signaling. It features 2.8-ns max propagation delay at 1.8 V, ±8-mA output drive, and Ioff support for partial-power-down mode. It serves as a high-speed bidirectional bus register in low-voltage memory interfaces and FPGA I/O expansion.
For engineers reviewing the SN74AUC16374 datasheet, SN74AUC16374 pinout, SN74AUC16374 application, or SN74AUC16374 equivalent, key selection criteria include its 1.8-V optimized timing, 48-pin TSSOP (DGG) package, 3-state output control per 8-bit bank, sub-1-V operability, and JESD 78 Class II latch-up immunity.
Technical Context
This device implements two independent 8-bit positive-edge-triggered D flip-flop banks, each with dedicated clock (1CLK/2CLK) and output-enable (1OE/2OE) inputs. Internal latching occurs on the rising edge of CLK; OE controls output state without affecting data capture or retention.
It supports mixed-mode voltage operation via 3.6-V-tolerant I/Os while powered from 0.8 V to 2.7 V, and includes Ioff circuitry that disables outputs during power-down to prevent current backflow. The design meets JESD 22 ESD standards (2000-V HBM, 200-V MM, 1000-V CDM) and exceeds 100 mA latch-up immunity per JESD 78.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 0.8 V to 2.7 V - enables operation in sub-1-V systems and compatibility with 1.2-V, 1.5-V, and 1.8-V domains |
| Max tpd | 2.8 ns at 1.8 V - ensures high-speed synchronization in DDR memory buffers and FPGA-to-ASIC interconnects |
| Output Drive | ±8 mA at 1.8 V - provides sufficient fanout to drive five 1.8-V CMOS loads without external termination |
| Ioff | ±10 µA max at 2.7 V - guarantees safe isolation during hot-insertion or partial power-down in modular systems |
| Input Thresholds | VIH = 0.65×VCC, VIL = 0.35×VCC - ensures robust noise margin across full VCC range |
| ESD Rating | 2000-V HBM - meets industrial-grade reliability requirements for board-level handling and assembly |
| Operating Temp | –40°C to +85°C - qualified for extended-temperature industrial and networking equipment |
Pinout & Package
TSSOP-48 (DGG) package: 12.6 mm × 6.1 mm × 1.2 mm body, 0.5-mm lead pitch, gull-wing leads, RoHS-compliant NiPdAu finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OE, 2OE | Output-enable control (active-low) | Independent 3-state control for first and second 8-bit output banks; does not affect internal latch state |
| 1CLK, 2CLK | Clock input (positive edge) | Edge-triggered sampling of corresponding D inputs; asynchronous to other bank's clock |
| 1D1–1D8, 2D1–2D8 | Data inputs | 16-bit parallel data path; sampled on rising CLK edge and held until next clock event |
| 1Q1–1Q8, 2Q1–2Q8 | 3-state outputs | Registered outputs; high-impedance when OE = high, logic-high/low when OE = low |
| VCC, GND | Power supply terminals | Eight VCC and eight GND pins distributed across package for low-inductance decoupling and signal integrity |
Key Features
| Feature | Design Value |
|---|---|
| 1.8-V optimized timing | 2.8-ns max tpd enables >350-MHz effective data throughput in synchronous bus applications |
| 3.6-V I/O tolerance | Allows direct interfacing with 3.3-V or 2.5-V peripherals without level shifters in mixed-voltage systems |
| Ioff protection | Prevents back-current flow when VCC = 0 V, supporting hot-swap and power sequencing in modular backplanes |
| Sub-1-V operability | Functional down to 0.8 V VCC, supporting ultra-low-power modes in battery-backed or energy-harvesting subsystems |
| High-impedance bus driving | Outputs enter high-Z state rapidly (tdis = 4.5 ns typ at 1.8 V), eliminating need for external pullups on shared buses |
Applications
| Memory Interface Buffer | FPGA I/O Expansion |
|---|---|
|
Use Scenario: Isolating and registering address/data lines between a low-voltage SoC and DDR SDRAM operating at 1.8 V. IC Role / Device Role / Timing Role: Acts as a registered bus buffer, synchronizing burst transfers and absorbing skew between controller and memory. Use Value: Enables reliable 200+ MHz data rates using tight setup/hold margins (tsu = 0.6 ns, th = 0.4 ns at 1.8 V). |
Use Scenario: Extending I/O count of a Spartan-7 FPGA by adding 16 synchronized, 3-state-capable signals. IC Role / Device Role / Timing Role: Provides edge-aligned, OE-gated output staging for peripheral control lines (e.g., SPI CS, GPIO banks). Use Value: Delivers ±8-mA drive strength and 2.8-ns tpd to meet FPGA I/O timing closure without added PCB routing delay compensation. |
| Hot-Swappable Module Interface | Low-Power Sensor Hub Register |
|
Use Scenario: Managing bidirectional data lanes in a pluggable optical transceiver module with independent power domains. IC Role / Device Role / Timing Role: Functions as a dual-bank isolator-enabling/disabling each 8-bit lane independently during insertion/removal. Use Value: Ioff limits leakage to ±10 µA during power-off, preventing backfeeding into live backplane rails. |
Use Scenario: Capturing and holding sensor readings (e.g., from 16-channel ADC) before wake-up of a Cortex-M0+ MCU. IC Role / Device Role / Timing Role: Operates as a low-leakage (20-µA ICC max), sub-1-V register bank retaining data during deep-sleep cycles. Use Value: Supports 0.8-V operation and retains valid Q-state while MCU core is powered down, reducing system wake latency. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit D-type flip-flop applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC16374DGGR | Higher VCC min (1.65 V), slower tpd (5.2 ns @ 3.3 V), lower drive (±24 mA @ 3.3 V) | Better suited for 3.3-V-only systems; lacks sub-1-V operation and 3.6-V I/O tolerance | Select when cost sensitivity outweighs speed and mixed-voltage needs |
| 74AUP1G74DC,125 | Single DFF in SC-70; no 3-state outputs; 1.1-V to 3.6-V range; 3.8-ns tpd @ 3.3 V | Only suitable for point-to-point, non-bus applications due to lack of output enable and multi-bit integration | Choose only for space-constrained, low-channel-count designs where bus sharing is unnecessary |
Compared with SN74LVC16374DGGR and 74AUP1G74DC,125, the SN74AUC16374 uniquely combines 16-bit density, 3-state per bank, sub-1-V operation, and 3.6-V I/O tolerance-making it the only option for high-speed, mixed-voltage, bus-oriented register applications requiring minimal layout overhead.
Availability
SN74AUC16374DGGR is available at Aetrix Electronics and suitable for memory interface buffers, FPGA I/O expansion, and hot-swappable module interfaces requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for SN74AUC16374DGGR 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 connectivity technologies, with decades of experience in high-speed logic and interface solutions.
The SN74AUC16374 belongs to TI's Widebus™ family-designed specifically for low-voltage, high-speed bus interface applications in portable, industrial, and communications equipment where timing precision and power efficiency are critical.
FAQ
What is the minimum supply voltage required for functional operation of the SN74AUC16374?
The SN74AUC16374 operates down to 0.8 V VCC, with guaranteed functionality across the full 0.8-V to 2.7-V range. At 0.8 V, it maintains valid logic thresholds and retains latch state, though maximum clock frequency is reduced. This sub-1-V capability makes the SN74AUC16374 suitable for ultra-low-power sleep modes and energy-harvesting systems where other 16-bit flip-flops fail to operate.
Can the SN74AUC16374 be used in mixed-voltage systems with 3.3-V peripherals?
Yes-the SN74AUC16374 features 3.6-V I/O tolerance, allowing its inputs and outputs to safely interface with 3.3-V or 2.5-V signal sources while powered from 1.8 V. No external level shifters are needed, simplifying design and reducing BOM cost. This capability is explicitly validated in TI's SCES403E datasheet under Absolute Maximum Ratings and Recommended Operating Conditions.
How does the Ioff feature of the SN74AUC16374 protect the system during partial power-down?
The Ioff circuitry in the SN74AUC16374 actively disables all outputs when VCC = 0 V, limiting leakage current to ±10 µA maximum-even if I/O pins are driven by live external signals. This prevents damaging back-current flow into a powered-down domain, enabling safe hot-swap operation in modular systems like telecom line cards or server mezzanine modules where the SN74AUC16374 manages isolated data paths.
What is the timing relationship between clock and output enable for the SN74AUC16374?
OE is asynchronous to CLK in the SN74AUC16374: changing OE does not affect internal latch operation or data capture. Outputs transition to high-impedance within 4.5 ns (tdis) after OE goes high, and return to active state within 2.9 ns (ten) after OE goes low-all measured at 1.8 V. This allows OE to be toggled freely during ongoing clocked operation without disrupting stored data or introducing metastability.
Is the SN74AUC16374 pin-compatible with other 16-bit flip-flops in TI's portfolio?
No-the SN74AUC16374 uses a unique 48-pin TSSOP (DGG) pinout optimized for signal integrity and power distribution, differing from SN74LVC16374DGGR (same package but different pin mapping for VCC/GND placement) and incompatible with 56-pin SSOP or VFBGA variants. Pin compatibility must be verified per TI's SCES403E pin assignment table; direct replacement requires PCB redesign unless using identical DGG-package predecessors.
SN74AUC16374DGGR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74AUC
- Package/Case:
- 48-TFSOP (0.240", 6.10mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Standard
- Type:
- D-Type
- Output Type:
- Tri-State, Non-Inverted
- Number of Elements:
- 2
- Number of Bits per Element:
- 8
- Clock Frequency:
- 250 MHz
- Max Propagation Delay @ V, Max CL:
- 2.2ns @ 2.5V, 30pF
- Trigger Type:
- Positive Edge
- Current - Output High, Low:
- 9mA, 9mA
- Voltage - Supply:
- 0.8V ~ 2.7V
- Current - Quiescent (Iq):
- 20 µA
- Input Capacitance:
- 3 pF
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-TSSOP
SN74AUC16374DGGR FAQ
1.How can I place an order for SN74AUC16374DGGR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74AUC16374DGGR 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 SN74AUC16374DGGR reliable?
The price and inventory of SN74AUC16374DGGR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74AUC16374DGGR is usually 5 days.
3.What payment methods are accepted for SN74AUC16374DGGR?
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4.How is shipping managed for SN74AUC16374DGGR?
SN74AUC16374DGGR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74AUC16374DGGR 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 SN74AUC16374DGGR?
For technical support, including SN74AUC16374DGGR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74AUC16374DGGR requirements.
6.How does Aetrix verify that SN74AUC16374DGGR is sourced from the original manufacturer or authorized distributors?
All SN74AUC16374DGGR 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 SN74AUC16374DGGR meets industry standards.
7.What is the process for return or replacement of SN74AUC16374DGGR?
All SN74AUC16374DGGR units undergo pre-shipment inspection (PSI). If there is an issue with SN74AUC16374DGGR, 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 SN74AUC16374DGGR part is unused and in its original packaging.
Return procedure for SN74AUC16374DGGR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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