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Texas Instruments SN74AVC16827DGG
- Part No.:
- SN74AVC16827DGG
- Manufacturer:
- Texas Instruments
- Package:
- 56-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
SN74AVC16827DGG.pdf
- Description:
- IC BUFF NON-INVERT 3.6V 56TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,998
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Product details
Overview
SN74AVC16827DGG from Texas Instruments is a 20-bit non-inverting buffer/driver with 3-state outputs, designed for 1.65-V to 3.6-V VCC operation in mixed-voltage bus interfaces. It features Dynamic Output Control (DOC) circuitry enabling ≤2 ns max propagation delay at 2.5 V and 3.3 V, ±24 mA dynamic drive capability at 2.5 V, and overvoltage-tolerant I/O supporting 1.2-V to 3.6-V data communication - used in high-speed memory address/data buffering and FPGA I/O expansion.
For engineers reviewing the SN74AVC16827DGG datasheet, SN74AVC16827DGG pinout, SN74AVC16827DGG application, or SN74AVC16827DGG equivalent, key selection criteria include its dual 10-bit sections with independent OE control, Ioff-enabled partial-power-down support, and DOC-based noise suppression without speed penalty.
Technical Context
The SN74AVC16827DGG implements two independent 10-bit buffer sections, each requiring both OE inputs (e.g., 1OE1 and 1OE2) low to enable Y outputs; either OE high places that section's outputs in high-impedance state. Its DOC circuit dynamically modulates output impedance during transitions - lowering it initially for fast edge drive, then raising it to suppress ringing and crosstalk.
This architecture delivers static IOH/IOL up to ±12 mA at 3.3 V while maintaining <2 ns tpd and supporting VI/VO tolerance up to 4.6 V - enabling robust level-shifting between 1.2-V, 1.8-V, 2.5-V, and 3.3-V domains without external translators.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 1.2 V to 3.6 V - supports wide-input voltage operation including 1.2-V data retention and 1.65–3.6-V active mode. |
| Max Propagation Delay | ≤2 ns at VCC = 2.5 V or 3.3 V - enables sub-500-MHz bus timing margins in DDR/PCIe auxiliary paths. |
| Dynamic Drive Strength | ±24 mA at 2.5 V - matches standard 24-mA buffers while retaining low-noise DOC behavior. |
| Ioff Support | Yes - prevents backflow current during partial power-down, critical for hot-swap and power-gated systems. |
| Overvoltage Tolerance | Inputs/outputs rated to 4.6 V - allows safe interfacing with higher-voltage logic without clamping diodes. |
| Operating Temperature | –40°C to +85°C - qualified for industrial and automotive under-hood ambient conditions. |
| Package | 56-pin Thin Shrink Small-Outline (DGG) - 10.0 mm × 6.2 mm footprint, 1.2 mm height, lead-free RoHS-compliant. |
Pinout & Package
SN74AVC16827DGG uses a 56-pin TSSOP (DGG) package with exposed thermal pad. Pin assignments are defined per top-view layout in SCES176F, featuring dual 10-bit sections, dedicated VCC/GND pairs per 10-bit group, and separate OE controls for fine-grained output gating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OE1, 1OE2, 2OE1, 2OE2 | Section Enable Inputs | Low-active enables corresponding 10-bit Y outputs; both OE signals per section must be low for output activation. |
| 1A1–1A10, 2A1–2A10 | Data Inputs | Non-inverting input terminals for respective 10-bit buffer sections; tolerate up to 4.6 V regardless of VCC. |
| 1Y1–1Y10, 2Y1–2Y10 | 3-State Outputs | Buffered, level-shifted outputs with DOC-controlled edge integrity; high-impedance when any OE is high. |
| VCC (Pins 7, 26, 39, 50) | Supply Voltage | Four distributed VCC pins reduce IR drop and improve PSRR across the 20-bit channel array. |
| GND (Pins 4, 11, 23, 32, 46) | Ground Reference | Five GND pins provide low-inductance return paths and minimize ground bounce in high-speed switching. |
Key Features
| Feature | Design Value |
|---|---|
| Dynamic Output Control (DOC) | Reduces simultaneous switching noise by modulating output impedance mid-transition - no speed trade-off vs. fixed-drive buffers. |
| Dual Independent 10-Bit Sections | Enables selective gating of address vs. data buses or split memory channels without shared enable latency. |
| Overvoltage-Tolerant I/O | Accepts 0–4.6 V input signals and drives 0–4.6 V loads at any VCC from 1.2 V to 3.6 V - eliminates external level shifters in mixed-rail systems. |
| Ioff Protection | Disables outputs and blocks current flow when VCC = 0 V - essential for live-insertion and multi-rail power sequencing. |
| Widebus™ Architecture | Optimized for high-density PCB routing with balanced pinout, minimized trace skew, and matched propagation delays across all 20 bits. |
Applications
| Memory Interface Buffering | FPGA I/O Expansion |
|---|---|
|
Use Scenario: Driving 20-bit address/data lines between a low-voltage microcontroller (1.8 V) and legacy SRAM (3.3 V). IC Role / Device Role / Timing Role: Level-shifting non-inverting buffer with 3-state control for bidirectional bus arbitration. Use Value: Eliminates discrete level translators; DOC ensures clean edges despite 1.5-V rail mismatch and reduces EMI on dense memory traces. |
Use Scenario: Extending I/O count of a Xilinx Artix-7 FPGA operating at 1.2 V core but interfacing with 2.5-V peripheral sensors. IC Role / Device Role / Timing Role: Voltage-translating bus driver with independent section enables for sensor group isolation. Use Value: Enables direct connection without external voltage translation; Ioff prevents backfeed when FPGA is unpowered during debug. |
| Industrial PLC Backplane | Automotive ADAS Sensor Hub |
|
Use Scenario: Isolating and buffering 20-bit parallel control signals across isolated power domains in a programmable logic controller. IC Role / Device Role / Timing Role: High-reliability 3-state buffer with robust ESD and overvoltage protection on field-side I/O. Use Value: Withstands 4.6-V transients on I/O; –40°C to +85°C rating ensures stable operation in cabinet-mounted controllers. |
Use Scenario: Aggregating camera and radar sensor data streams into a central domain controller using shared parallel buses. IC Role / Device Role / Timing Role: Low-jitter, low-noise buffer for time-critical image data transfer between heterogeneous SoCs. Use Value: ≤2 ns tpd and DOC-driven edge control preserve signal integrity across 15-cm FR4 traces at 100+ MHz effective rates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buffer/driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC16245ADGGR | Lower drive (±24 mA only at 3.3 V), no DOC, wider VCC range (1.65–3.6 V), no Ioff. | Lacks overvoltage tolerance and partial-power-down support; requires external pull-ups for hot-swap safety. | Choose when cost sensitivity outweighs noise control and mixed-rail flexibility. |
| SN74AVCH16T245DGGR | Bidirectional with auto-direction sensing, same DOC and Ioff, but 16-bit and different pinout. | Supports bidirectional data flow (e.g., SPI/QSPI buses); not pin-compatible due to direction-control logic and reduced channel count. | Prefer for protocols requiring automatic direction detection; verify PCB layout compatibility before substitution. |
Compared with SN74LVC16245ADGGR, SN74AVC16827DGG adds DOC-based noise reduction and Ioff for safer power sequencing; versus SN74AVCH16T245DGGR, it offers 20-bit unidirectional throughput and independent section enables - better suited for fixed-direction, high-channel-count buffering.
Availability
SN74AVC16827DGG is available at Aetrix Electronics and suitable for industrial PLC backplanes, automotive ADAS sensor hubs, FPGA I/O expansion, and memory interface buffering requiring stable component supply across extended temperature and mixed-voltage environments.
Supply support for SN74AVC16827DGG 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 solutions, with decades of innovation in high-speed interface ICs and process technologies like EPIC™.
The SN74AVC16827DGG belongs to TI's AVC logic family - engineered for low-voltage, high-speed bus interface applications where noise control, level shifting, and power-aware design are critical.
FAQ
What is the minimum VCC required for functional operation of the SN74AVC16827DGG?
The SN74AVC16827DGG operates functionally down to 1.4 V VCC under recommended conditions; at 1.2 V, it retains data but does not guarantee full logic functionality. The device is fully characterized from 1.4 V to 3.6 V, with VIH/VIL thresholds scaling proportionally to VCC across that range. Always refer to the SCES176F datasheet's recommended operating conditions table for precise voltage-dependent timing and threshold values for SN74AVC16827DGG.
Does the SN74AVC16827DGG support true bidirectional data flow?
No, the SN74AVC16827DGG is a unidirectional buffer/driver with separate A (input) and Y (output) terminals per channel. It lacks direction-control logic or auto-sensing capability. For bidirectional applications, TI recommends alternatives such as the SN74AVCH16T245DGGR. The SN74AVC16827DGG's dual 10-bit sections with independent OE inputs allow flexible gating but do not change signal directionality - each section flows strictly from A to Y.
How does the Dynamic Output Control (DOC) circuit in the SN74AVC16827DGG reduce noise without increasing propagation delay?
The DOC circuit in the SN74AVC16827DGG lowers output impedance at the start of a transition to rapidly charge/discharge load capacitance, then raises impedance mid-transition to dampen ringing and suppress crosstalk. This staged impedance profile maintains ≤2 ns tpd while cutting simultaneous switching noise - confirmed by TI application report SCEA009. Unlike fixed-drive buffers, DOC achieves this without adding delay stages or sacrificing edge speed, making SN74AVC16827DGG ideal for noise-sensitive high-speed parallel buses.
Can the SN74AVC16827DGG be used in partial-power-down systems where VCC may be ramped independently?
Yes, the SN74AVC16827DGG includes Ioff circuitry that disables outputs and blocks current backflow when VCC = 0 V, even if input or output voltages remain present up to 4.6 V. This feature protects upstream and downstream devices during staggered power sequencing - a requirement in modular systems like server blades or automotive domain controllers. The Ioff specification is verified per SCES176F and applies across the full –40°C to +85°C temperature range for SN74AVC16827DGG.
What is the thermal resistance (θJA) of the SN74AVC16827DGG in its DGG package?
The SN74AVC16827DGG in the 56-pin DGG (Thin Shrink Small-Outline) package has a specified junction-to-ambient thermal resistance (θJA) of 64°C/W, measured per JESD 51 standards. This value assumes standard JEDEC 2-layer board conditions. For high-power-density layouts, thermal performance can be improved using PCB copper pour under the exposed pad and additional vias - TI provides layout guidelines in the SN74AVC16827DGG application notes to ensure reliable operation within its 100-mA per VCC/GND pin limit.
SN74AVC16827DGG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74AVC
- Package/Case:
- 56-TFSOP (0.240", 6.10mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Logic Type:
- Buffer, Non-Inverting
- Number of Elements:
- 2
- Number of Bits per Element:
- 10
- Input Type:
- -
- Output Type:
- 3-State
- Current - Output High, Low:
- 12mA, 12mA
- Voltage - Supply:
- 1.2V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 56-TSSOP
SN74AVC16827DGG FAQ
1.How can I place an order for SN74AVC16827DGG through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74AVC16827DGG 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 SN74AVC16827DGG reliable?
The price and inventory of SN74AVC16827DGG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74AVC16827DGG is usually 5 days.
3.What payment methods are accepted for SN74AVC16827DGG?
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4.How is shipping managed for SN74AVC16827DGG?
SN74AVC16827DGG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74AVC16827DGG 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 SN74AVC16827DGG?
For technical support, including SN74AVC16827DGG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74AVC16827DGG requirements.
6.How does Aetrix verify that SN74AVC16827DGG is sourced from the original manufacturer or authorized distributors?
All SN74AVC16827DGG 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 SN74AVC16827DGG meets industry standards.
7.What is the process for return or replacement of SN74AVC16827DGG?
All SN74AVC16827DGG units undergo pre-shipment inspection (PSI). If there is an issue with SN74AVC16827DGG, 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 SN74AVC16827DGG part is unused and in its original packaging.
Return procedure for SN74AVC16827DGG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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