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Texas Instruments SN74AUC16245DGVR
- Part No.:
- SN74AUC16245DGVR
- Manufacturer:
- Texas Instruments
- Package:
- 48-TFSOP (0.173", 4.40mm Width)
- Datasheet:
-
SN74AUC16245DGVR.pdf
- Description:
- IC TXRX NON-INVERT 2.7V 48TVSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,759
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Product details
Overview
SN74AUC16245DGVR from Texas Instruments is a 16-bit dual-octal noninverting bus transceiver optimized for 1.8-V operation with 3.6-V I/O tolerance, sub-1-V operability, 2-ns max propagation delay at 1.8 V, and ±8-mA output drive - used in voltage-level translation between 1.65–1.95-V logic domains in high-speed memory and processor interconnects.
For engineers reviewing the SN74AUC16245DGVR datasheet, SN74AUC16245DGVR pinout, SN74AUC16245DGVR application, or SN74AUC16245DGVR equivalent, key selection criteria include Ioff-enabled partial-power-down isolation, 1.8-V tpd ≤ 2 ns, 3.6-V I/O tolerance for mixed-mode signaling, and TVSOP-48 package compatibility with space-constrained PCB layouts.
Technical Context
This device implements two independent 8-bit bidirectional data paths controlled by DIR and OE inputs, enabling asynchronous A↔B or B↔A data flow without external timing constraints. Each direction channel supports simultaneous 8-bit transfer with rail-to-rail output swing (0 to VCC) and 3.6-V tolerant inputs.
The Ioff circuitry actively disables outputs during power-down to prevent backflow current, while the sub-1-V operability (down to 0.8 V) and 5 ns/V input transition rate support ultra-low-voltage system integration. Latch-up immunity exceeds 100 mA per JESD 78 Class II.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 0.8 V to 2.7 V - enables operation across ultra-low-voltage (0.8 V) to 2.7-V systems without level shifters. |
| tpd (1.8 V) | 2 ns max - ensures sub-2-ns signal propagation for DDR memory interfaces and high-speed peripheral buses. |
| I/O Tolerance | 3.6 V - allows safe interfacing with legacy 3.3-V or 2.5-V peripherals while powered from 1.8-V supply. |
| Output Drive | ±8 mA at 1.8 V - provides sufficient current to drive 15-pF loads at 100-MHz toggle rates without waveform degradation. |
| Ioff Current | ±10 µA max - guarantees robust isolation during partial-power-down, preventing bus contention in multi-rail SoC subsystems. |
| ICC (max) | 20 µA - minimizes quiescent power in always-on control logic and battery-backed subsystems. |
| ESD Rating | 2000-V HBM - meets industrial-grade ESD robustness requirements for board-level handling and field deployment. |
Pinout & Package
SN74AUC16245DGVR uses a 48-pin TVSOP (DGV) package measuring 12.6 mm × 6.1 mm × 1.2 mm (max height), JEDEC MO-153 compliant, with 0.4-mm pitch gull-wing leads and Q1 pin-1 orientation in tape.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1DIR, 2DIR | Direction control input | Active-HIGH logic selects A→B (DIR = H) or B→A (DIR = L) data flow per 8-bit section. |
| 1OE, 2OE | Output enable input | Active-LOW enables transceiver; tied to VCC via pullup ensures high-Z at power-up/power-down. |
| 1A1–1A8, 2A1–2A8 | Port A data terminals | First and second 8-bit input/output bus ports - bidirectional when OE and DIR active. |
| 1B1–1B8, 2B1–2B8 | Port B data terminals | Corresponding 8-bit bidirectional ports paired with A-side for full 16-bit or split 8-bit operation. |
| VCC (Pins 7, 18, 29, 40) | Supply voltage | Four dedicated VCC pins reduce IR drop and improve noise margin across high-speed switching. |
| GND (Pins 4, 11, 22, 33, 44) | Ground reference | Five GND pins provide low-inductance return paths essential for signal integrity at >100-MHz data rates. |
Key Features
| Feature | Design Value |
|---|---|
| 1.8-V optimized performance | 2-ns tpd and ±8-mA drive at nominal 1.8-V supply - eliminates need for intermediate voltage rails in modern low-power SoCs. |
| Ioff partial-power-down | Prevents damaging backflow current when VCC = 0 V while I/Os remain biased - critical for hot-swap and dynamic power-gating systems. |
| 3.6-V I/O tolerance | Enables direct connection to 3.3-V or 2.5-V buses without external clamping or level-shifting components. |
| Sub-1-V operability | Functional down to 0.8 V VCC - supports emerging ultra-low-voltage microcontrollers and energy-harvesting applications. |
| High ESD robustness | 2000-V HBM, 200-V MM, 1000-V CDM - reduces field failure risk in manufacturing, test, and end-use environments. |
Applications
| DDR Memory Interface | Low-Power FPGA I/O Bridging |
|---|---|
|
Use Scenario: Bidirectional data transfer between 1.8-V FPGA I/O banks and 1.5-V DDR2/DDR3 memory controllers. IC Role / Device Role / Timing Role: Voltage-level translating transceiver managing address/data strobe timing with <2-ns skew. Use Value: Eliminates discrete level shifters while maintaining setup/hold margins under 100-MHz clock domains. |
Use Scenario: Isolating and translating control signals between 1.8-V FPGA configuration logic and 2.5-V peripheral ASICs. IC Role / Device Role / Timing Role: Asynchronous bus interface with Ioff-enabled power-domain separation during FPGA reconfiguration. Use Value: Prevents backfeed into unpowered ASIC sections, enabling safe partial reconfiguration without system reset. |
| Portable SSD Controller Interconnect | Industrial PLC Backplane Buffering |
|
Use Scenario: High-speed command/address routing between 1.8-V NAND flash controller and 3.3-V PCIe bridge IC. IC Role / Device Role / Timing Role: Dual-octal transceiver operating as two independent 8-bit channels for parallel command lanes. Use Value: 3.6-V I/O tolerance absorbs PCIe bridge's 3.3-V signaling swing without external protection diodes. |
Use Scenario: Signal conditioning and isolation between 1.8-V microcontroller I/O and 24-V industrial fieldbus transceivers. IC Role / Device Role / Timing Role: Level-translating buffer with latch-up immunity >100 mA for harsh EMI environments. Use Value: Survives repetitive ESD events on factory floor wiring without degradation or latch-up-induced resets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74AVC16245DGVR | Higher drive (±12 mA), wider VCC range (1.2–3.6 V), but 2.5-ns tpd at 1.8 V vs. 2 ns for SN74AUC16245DGVR. | Better suited for driving heavier capacitive loads (>20 pF) or longer traces; less optimal for strict <2-ns timing budgets. | Select SN74AVC16245DGVR only if higher output current or extended VCC flexibility outweighs propagation delay penalty. |
| SN74LVC16245ADGVR | Slower tpd (3.5 ns at 1.8 V), lower I/O tolerance (3.6 V same), but broader industrial temp range (−40°C to 125°C). | Preferred for automotive under-hood or extended-temperature industrial control where speed is secondary to thermal robustness. | Choose SN74LVC16245ADGVR when ambient temperature exceeds 85°C and 3.5-ns tpd remains acceptable. |
Compared with SN74AVC16245DGVR and SN74LVC16245ADGVR, SN74AUC16245DGVR delivers the fastest propagation delay (2 ns) at 1.8 V within its 0.8–2.7-V operating window, making it optimal for latency-critical memory and high-frequency peripheral interfaces where sub-2-ns timing is mandatory.
Availability
SN74AUC16245DGVR is available at Aetrix Electronics and suitable for DDR memory interfaces, low-power FPGA I/O bridging, and portable SSD controller interconnects requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant TVSOP packaging.
Supply support for SN74AUC16245DGVR 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 over 90 years of innovation in high-reliability, high-performance silicon solutions.
SN74AUC16245DGVR belongs to TI's Widebus™ family of ultra-high-speed logic devices designed specifically for low-voltage, low-power, high-density digital interconnects in portable, computing, and communications equipment.
FAQ
What is the minimum supply voltage required for functional operation of the SN74AUC16245DGVR?
The SN74AUC16245DGVR operates down to 0.8 V VCC, as specified in the recommended operating conditions table. At this voltage, it maintains valid logic thresholds (VIH = 0 V, VIL = 0 V), though propagation delay increases to 5.6 ns and output drive drops to ±0.7 mA. Full 1.8-V performance requires VCC ≥ 1.65 V.
How does the Ioff feature protect the SN74AUC16245DGVR during partial-power-down sequences?
The Ioff circuitry in the SN74AUC16245DGVR disables all outputs when VCC = 0 V, limiting input/output leakage to ±10 µA maximum. This prevents current backflow from live 3.3-V or 2.5-V buses into the unpowered device, eliminating risk of damage or unintended logic states in multi-rail systems.
Can the SN74AUC16245DGVR be used as a single 16-bit transceiver or only as two independent 8-bit units?
The SN74AUC16245DGVR supports both configurations: DIR and OE pins are duplicated per 8-bit section (1DIR/1OE and 2DIR/2OE), allowing independent control of each octal channel. It can operate as one unified 16-bit transceiver (with shared DIR/OE) or two isolated 8-bit transceivers (with separate DIR/OE asserts).
What is the thermal resistance (θJA) of the SN74AUC16245DGVR in its TVSOP-48 package?
The SN74AUC16245DGVR in the TVSOP (DGV) package has a junction-to-ambient thermal resistance (θJA) of 58°C/W, as documented in the absolute maximum ratings table. This value assumes standard JEDEC 2-layer board conditions and enables reliable operation up to 85°C ambient with typical 20-µA ICC dissipation.
Is the SN74AUC16245DGVR pin-compatible with other members of the SN74AUC16245 family?
Yes - SN74AUC16245DGVR shares identical pinout and functionality with SN74AUC16245DGGR (TSSOP-48) and SN74AUC16245GQLR (VFBGA-48). All variants use the same terminal assignments, logic behavior, and electrical specifications; only package dimensions and thermal characteristics differ.
SN74AUC16245DGVR 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
- Logic Type:
- Transceiver, Non-Inverting
- Number of Elements:
- 2
- Number of Bits per Element:
- 8
- Input Type:
- -
- Output Type:
- 3-State
- Current - Output High, Low:
- 9mA, 9mA
- Voltage - Supply:
- 0.8V ~ 2.7V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-TVSOP
SN74AUC16245DGVR FAQ
1.How can I place an order for SN74AUC16245DGVR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74AUC16245DGVR 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 SN74AUC16245DGVR reliable?
The price and inventory of SN74AUC16245DGVR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74AUC16245DGVR is usually 5 days.
3.What payment methods are accepted for SN74AUC16245DGVR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74AUC16245DGVR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74AUC16245DGVR?
SN74AUC16245DGVR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74AUC16245DGVR 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 SN74AUC16245DGVR?
For technical support, including SN74AUC16245DGVR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74AUC16245DGVR requirements.
6.How does Aetrix verify that SN74AUC16245DGVR is sourced from the original manufacturer or authorized distributors?
All SN74AUC16245DGVR 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 SN74AUC16245DGVR meets industry standards.
7.What is the process for return or replacement of SN74AUC16245DGVR?
All SN74AUC16245DGVR units undergo pre-shipment inspection (PSI). If there is an issue with SN74AUC16245DGVR, 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 SN74AUC16245DGVR part is unused and in its original packaging.
Return procedure for SN74AUC16245DGVR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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