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Texas Instruments SN74AUC16374DGVR
- Part No.:
- SN74AUC16374DGVR
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- 48-TFSOP (0.173", 4.40mm Width)
- Datasheet:
-
SN74AUC16374DGVR.pdf
- Description:
- IC FF D-TYPE DUAL 8BIT 48TVSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,891
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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 bidirectional bus driver or buffer register in low-voltage memory interfaces and high-speed data paths.
For engineers reviewing the SN74AUC16374 datasheet, SN74AUC16374 pinout, SN74AUC16374 application, or SN74AUC16374 equivalent, key selection criteria include sub-2.8-ns tpd at 1.8 V, 3.6-V I/O tolerance for mixed-voltage interconnects, Ioff-enabled power-down isolation, 16-bit dual-8-bit configurable operation, and TVSOP-48 package compatibility with fine-pitch PCB routing.
Technical Context
This device implements two independent 8-bit positive-edge-triggered D flip-flops, each with individual clock (1CLK/2CLK) and output-enable (1OE/2OE) controls. All 16 Q outputs are 3-state capable, enabling direct connection to shared buses without external pull-ups or interface logic.
It operates across 0.8 V–2.7 V supply range but is optimized for 1.65 V–1.95 V VCC, with input thresholds scaling to VCC (VIH = 0.65×VCC, VIL = 0.35×VCC). The Ioff circuitry actively disables outputs during power-down, preventing backflow current when VCC = 0 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 0.8 V to 2.7 V - supports ultra-low-voltage operation down to 0.8 V, with optimal performance at 1.65–1.95 V. |
| Max Propagation Delay (tpd) | 2.8 ns at 1.8 V - enables >250-MHz clock operation in timing-critical data latching and pipeline stages. |
| Output Drive Strength | ±8 mA at 1.8 V - sufficient to drive 50-Ω transmission lines or multiple CMOS loads without buffering. |
| I/O Tolerance | 3.6 V - allows safe interfacing with 3.3-V or 2.5-V systems while powered from 1.8-V rails. |
| Ioff Current | ±10 µA at 2.7 V - ensures robust isolation during partial power-down, meeting JESD78 Class II latch-up immunity. |
| Input Capacitance (Ci) | 3 pF at 2.5 V - minimizes loading on upstream drivers and preserves signal integrity in high-speed buses. |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade embedded control and communications equipment. |
Pinout & Package
SN74AUC16374DGVR uses a 48-pin TVSOP (DGV) package, 3.6 mm × 9.7 mm body, 0.4 mm pitch, 1.2 mm max height, JEDEC MO-153 compliant. Pin 1 located at top-left corner (Q1 quadrant), marked "MH374" on top-side.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OE, 2OE | Output Enable (active-low) | Independent control of first/second 8-bit output groups; high-impedance state isolates bus without affecting internal latch state. |
| 1CLK, 2CLK | Clock Input (positive edge) | Edge-triggered sampling of D inputs; asynchronous to OE, allowing data capture while outputs remain tri-stated. |
| 1D1–1D8, 2D1–2D8 | Data Inputs | 16-bit parallel data inputs; accept 0.8–2.7 V logic levels and tolerate up to 3.6 V transient overvoltage. |
| 1Q1–1Q8, 2Q1–2Q8 | 3-State Outputs | 16 buffered outputs with ±8-mA drive; enter high-Z when OE = high, preserving bus integrity during arbitration or standby. |
| VCC, GND | Power Supply | Dual VCC/GND pairs per 8-bit section reduce switching noise and improve PSRR in high-frequency operation. |
Key Features
| Feature | Design Value |
|---|---|
| 1.8-V optimized timing | 2.8-ns max tpd enables sub-350-ps setup/hold windows for 250-MHz synchronous interfaces. |
| 3.6-V I/O tolerance | Eliminates level-shifters when interfacing with legacy 3.3-V peripherals or FPGAs in mixed-supply systems. |
| Ioff partial-power-down | Prevents back-current flow during hot-swap or sleep-mode sequencing, simplifying power management design. |
| Dual 8-bit configuration | Allows independent clocking and output control of two 8-bit data lanes-ideal for byte-wide memory or peripheral buses. |
| Low dynamic power | 20-µA max ICC and 26.2-pF typical Cpd at 1.8 V reduce system-level power budget and thermal load. |
Applications
| Memory Interface Buffering | High-Speed Data Acquisition |
|---|---|
|
Use Scenario: Latching parallel ADC output data before transfer to an FPGA or microcontroller. IC Role / Device Role / Timing Role: 16-bit edge-triggered register capturing simultaneous 16-bit sample words on rising CLK edge. Use Value: 2.8-ns tpd ensures minimal skew between bits; 3.6-V I/O tolerance accommodates 3.3-V ADC outputs while operating from 1.8-V rail. |
Use Scenario: Isolating and synchronizing dual-channel LVDS receiver outputs to a common clock domain. IC Role / Device Role / Timing Role: Dual 8-bit D flip-flop providing matched delay and bus isolation between differential receiver front-ends and digital processing logic. Use Value: Independent 1OE/2OE pins allow channel-gated data forwarding; Ioff prevents leakage during idle periods. |
| Low-Voltage Bus Transceiver | Configurable I/O Port Expansion |
|
Use Scenario: Implementing a 16-bit bidirectional data bus between a 1.8-V SoC and a 3.3-V peripheral ASIC. IC Role / Device Role / Timing Role: 3-state D-type register acting as voltage-tolerant bus driver/receiver with direction controlled via OE signals. Use Value: 3.6-V I/O rating eliminates external level shifters; ±8-mA drive supports stub-free routing on 50-Ω PCB traces. |
Use Scenario: Expanding GPIO count on a battery-powered IoT MCU with strict 1.8-V supply constraints. IC Role / Device Role / Timing Role: 16-bit latch providing synchronized, glitch-free output port extension with programmable enable timing. Use Value: Sub-1-V operability extends runtime in deep-sleep modes; 20-µA ICC minimizes quiescent current impact. |
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 |
|---|---|---|---|
| SN74LVC16374DGVR | Higher VCC min (1.65 V), slower tpd (4.5 ns @ 3.3 V), 3.6-V tolerant but not sub-1-V operable. | Suitable for 3.3-V dominant systems where ultra-low delay is noncritical and Ioff is not required. | Choose when cost sensitivity outweighs 1.8-V optimization and sub-3-ns timing needs. |
| 74AUP1G74DC,125 | Single DFF in SC-70-8; no 16-bit or 3-state capability; 2.8-V max VCC; 3.8-ns tpd @ 3.3 V. | Only applicable for discrete single-bit synchronization-not scalable to 16-bit bus functions. | Select only for point-to-point clock-domain crossing where density and bus interface are irrelevant. |
Compared with SN74LVC16374DGVR and 74AUP1G74DC,125, the SN74AUC16374DGVR uniquely delivers sub-2.8-ns delay at 1.8 V, true sub-1-V operation, and Ioff-enabled power sequencing-making it irreplaceable in high-speed, ultra-low-voltage, mixed-rail industrial and test equipment designs.
Availability
SN74AUC16374DGVR is available at Aetrix Electronics and suitable for high-speed memory interfaces, precision data acquisition systems, and low-voltage bus transceivers requiring stable component supply and long-term industrial availability.
Supply support for SN74AUC16374DGVR 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 expertise in high-performance logic and interface solutions.
The SN74AUC16374 belongs to TI's Widebus™ family-designed specifically for low-voltage, high-speed parallel data path applications including memory buffers, bus isolation, and I/O expansion in portable and industrial electronics.
FAQ
What is the minimum operating voltage for SN74AUC16374DGVR?
The SN74AUC16374DGVR operates down to 0.8 V, with guaranteed functionality across 0.8 V–2.7 V. Its design is optimized for 1.65 V–1.95 V, where parameters like tpd = 2.8 ns and output drive = ±8 mA are specified. Below 1.65 V, timing margins shrink but logic operation remains functional per datasheet limits.
Does SN74AUC16374DGVR support hot insertion or partial power-down?
Yes. SN74AUC16374DGVR includes Ioff circuitry that disables outputs when VCC = 0 V, preventing damaging current backflow during hot-swap or staggered power sequencing. This feature is explicitly tested per JESD78 Class II and supports robust partial-power-down operation in modular systems.
Can SN74AUC16374DGVR interface directly with 3.3-V logic without level shifters?
Yes. SN74AUC16374DGVR has 3.6-V I/O tolerance, meaning its inputs and outputs safely accept and drive up to 3.6 V regardless of VCC (as low as 0.8 V). This allows direct connection to 3.3-V devices while powered from 1.8-V rails-no external level shifters required.
What is the maximum clock frequency supported by SN74AUC16374DGVR?
At 1.8 V, SN74AUC16374DGVR supports up to 250 MHz clock frequency, derived from its 2.8-ns max tpd and 1.9-ns min pulse width (tw). At lower VCC (e.g., 1.2 V), fmax drops to 85 MHz due to increased propagation delay and reduced drive strength.
How does the output-enable (OE) function interact with internal latch behavior in SN74AUC16374DGVR?
In SN74AUC16374DGVR, OE affects only output drivers-not internal latches. When OE is high (disabled), Q outputs go high-impedance while retaining their last latched value. New data can still be captured on CLK edges, and old data remains valid internally-enabling seamless bus arbitration and multi-cycle data staging.
SN74AUC16374DGVR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74AUC
- Package/Case:
- 48-TFSOP (0.173", 4.40mm 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-TVSOP
SN74AUC16374DGVR FAQ
1.How can I place an order for SN74AUC16374DGVR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74AUC16374DGVR 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 SN74AUC16374DGVR reliable?
The price and inventory of SN74AUC16374DGVR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74AUC16374DGVR is usually 5 days.
3.What payment methods are accepted for SN74AUC16374DGVR?
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4.How is shipping managed for SN74AUC16374DGVR?
SN74AUC16374DGVR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74AUC16374DGVR 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 SN74AUC16374DGVR?
For technical support, including SN74AUC16374DGVR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74AUC16374DGVR requirements.
6.How does Aetrix verify that SN74AUC16374DGVR is sourced from the original manufacturer or authorized distributors?
All SN74AUC16374DGVR 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 SN74AUC16374DGVR meets industry standards.
7.What is the process for return or replacement of SN74AUC16374DGVR?
All SN74AUC16374DGVR units undergo pre-shipment inspection (PSI). If there is an issue with SN74AUC16374DGVR, 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 SN74AUC16374DGVR part is unused and in its original packaging.
Return procedure for SN74AUC16374DGVR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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