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Texas Instruments SN74ABT16245ADGVR
- Part No.:
- SN74ABT16245ADGVR
- Manufacturer:
- Texas Instruments
- Package:
- 48-TFSOP (0.173", 4.40mm Width)
- Datasheet:
-
SN74ABT16245ADGVR.pdf
- Description:
- IC TXRX NON-INVERT 5.5V 48TVSOP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SN74ABT16245ADGVR from Texas Instruments is a 16-bit noninverting bus transceiver with 3-state outputs in a 48-pin TVSOP (DGV) package, operating from 4.5 V to 5.5 V, delivering ±32 mA high-drive outputs and supporting bidirectional data flow between A and B buses under DIR/OE control - used in industrial backplane interfaces and memory expansion subsystems.
For engineers reviewing the SN74ABT16245ADGVR datasheet, SN74ABT16245ADGVR pinout, SN74ABT16245ADGVR application, or SN74ABT16245ADGVR equivalent, this page delivers verified electrical specs (tPLH ≤ 3.9 ns, VOL ≤ 0.55 V), thermal resistance (θJA = 93 °C/W), ESD rating (>2000 V), latch-up immunity (>500 mA), and precise pin mapping for layout validation and signal integrity planning.
Technical Context
The SN74ABT16245ADGVR implements dual 8-bit transceiver sections with independent direction (1DIR/2DIR) and output-enable (1OE/2OE) controls, enabling flexible synchronous two-way communication between parallel data buses. Its EPIC-IIB™ BiCMOS process ensures low ground bounce (VOLP < 1 V) and high noise immunity while maintaining TTL-compatible input thresholds (VIH = 2 V, VIL = 0.8 V).
It features distributed VCC/GND pinning across all four sides to suppress high-speed switching noise, flow-through pin architecture for optimal PCB routing, and power-up/power-down high-impedance behavior when VCC is below 2.1 V - eliminating bus contention during supply sequencing without external circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V - compatible with standard 5-V logic systems and tolerant of rail droop during transient load conditions. |
| Output Drive | –32 mA IOH / 64 mA IOL - sufficient to drive heavy capacitive loads (e.g., >50 pF traces or multiple TTL inputs) without signal degradation. |
| Propagation Delay | tPLH/tPHL ≤ 3.9 ns @ VCC = 5 V, CL = 50 pF - supports >100 MHz bus operation with tight timing margins. |
| ESD Protection | >2000 V per MIL-STD-883 Method 3015 - robust handling in manufacturing and field-replaceable module assembly. |
| Latch-Up Immunity | >500 mA per JESD 70 - prevents destructive latch-up under fault conditions like bus contention or hot-plug events. |
| Thermal Resistance | θJA = 93 °C/W (TVSOP) - enables reliable operation at TA = 85°C with moderate airflow or standard PCB copper pour. |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade embedded control, test equipment, and communications infrastructure. |
Pinout & Package
SN74ABT16245ADGVR uses a 48-pin Thin Very Small Outline Package (TVSOP, DGV), 7.1 mm × 10.2 mm footprint, 1.2 mm max height, JEDEC MO-153 compliant, with gull-wing leads and pin 1 quadrant Q1 orientation in tape-and-reel delivery.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1DIR, 2DIR | Direction Control Input | Determines data flow direction per 8-bit section: L = B→A, H = A→B; asynchronous, no internal synchronization required. |
| 1OE, 2OE | Output Enable Input | Active-low enable: L = outputs active, H = all outputs enter high-impedance state - isolates buses without external switches. |
| 1A1–1A8, 2A1–2A8 | A-Side Data Inputs/Outputs | Bidirectional I/O ports tied to A bus; internally connected to transceiver core with 3-state buffers controlled by OE/DIR. |
| 1B1–1B8, 2B1–2B8 | B-Side Data Inputs/Outputs | Bidirectional I/O ports tied to B bus; functionally identical to A-side but electrically isolated and independently controllable. |
| VCC (Pins 7, 18, 29, 40) | Power Supply | Distributed VCC pins minimize IR drop and supply noise coupling across the 16-bit data path - critical for signal integrity. |
| GND (Pins 4, 10, 15, 21, 27, 33, 39, 45) | Ground Reference | Eight GND pins provide low-inductance return paths and reduce ground bounce during simultaneous switching of multiple outputs. |
Key Features
| Feature | Design Value |
|---|---|
| High-Drive Outputs | –32 mA IOH / 64 mA IOL enables direct interface to legacy TTL loads and long PCB traces without buffer amplification. |
| Flow-Through Pinout | A/B port pins arranged linearly across opposite sides (e.g., 1A1–1A8 on top, 1B1–1B8 on bottom) simplifies layer stacking and reduces trace crossovers. |
| Power Sequencing Safety | Automatic high-Z state when VCC < 2.1 V eliminates bus contention during power-up/down - no external reset or enable logic needed. |
| Distributed Power/Ground | Four VCC and eight GND pins placed symmetrically suppress simultaneous switching noise (SSN) and improve EMI performance. |
| Widebus™ Architecture | Optimized for high-speed parallel bus applications including memory expansion, FPGA-to-ASIC interconnect, and industrial backplanes. |
Applications
| Industrial Backplane Interface | Memory Expansion Subsystem |
|---|---|
|
Use Scenario: Bidirectional data transfer between CPU module and peripheral I/O cards across a 16-bit parallel backplane with stub lengths up to 15 cm. IC Role / Device Role / Timing Role: Bus transceiver providing level-shifting isolation, drive strength enhancement, and direction arbitration between mismatched bus segments. Use Value: Enables deterministic timing (tPLH ≤ 3.9 ns) and noise-immune operation via distributed VCC/GND, reducing need for termination resistors or repeaters. |
Use Scenario: Expanding SRAM capacity in an embedded controller by connecting two 8-bit memory banks to a single 16-bit data bus. IC Role / Device Role / Timing Role: Dual 8-bit transceiver allowing independent read/write control of each memory bank while sharing address/control lines. Use Value: Eliminates bus contention through synchronized OE/DIR control and supports hot-swap-safe high-Z state during power transitions. |
| FPGA-to-Microcontroller Bridge | Test Equipment Data Acquisition |
|
Use Scenario: Interfacing a Xilinx Spartan FPGA's 16-bit user I/O bank to an ARM Cortex-M7 microcontroller's external memory interface. IC Role / Device Role / Timing Role: Level-tolerant, high-drive transceiver managing bidirectional burst transfers with sub-4 ns propagation delay. Use Value: Matches FPGA output drive capability while providing robust noise margin (VIH = 2 V, VIL = 0.8 V) and ESD protection (>2000 V). |
Use Scenario: Capturing parallel digital signals from DUT (device under test) into a high-speed logic analyzer with 16-bit wide acquisition channel. IC Role / Device Role / Timing Role: Signal conditioning and bus isolation transceiver ensuring clean sampling edge alignment and preventing backfeed into DUT. Use Value: Delivers 64 mA sink current to drive analyzer input capacitance and maintains high-Z isolation when acquisition is disabled. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74ABT16245ADGGR | TSSOP-48 (DGG) package, θJA = 89 °C/W, same electrical specs and pinout - slightly better thermal performance but larger footprint (8.6 mm × 13.0 mm vs. 7.1 mm × 10.2 mm). | Suitable where board space allows larger package and lower junction temperature is prioritized over minimal footprint. | Select SN74ABT16245ADGGR if thermal headroom is constrained and PCB real estate permits 24% larger body size. |
| SN74LVC16245APAG | 3.3-V only operation (1.65–3.6 V), lower drive (–24 mA/24 mA), smaller 56-pin TSSOP, CMOS input structure - not pin-compatible and requires level translation for 5-V systems. | Applicable only in modern low-voltage designs; incompatible with 5-V buses without translators. | Choose SN74LVC16245APAG only for new 3.3-V-only architectures; avoid for drop-in replacement in existing 5-V SN74ABT16245ADGVR designs. |
Compared with SN74ABT16245ADGGR, SN74ABT16245ADGVR offers superior board-area efficiency and identical signal integrity, while SN74LVC16245APAG provides voltage scalability at the cost of compatibility, drive strength, and pinout alignment - making SN74ABT16245ADGVR the optimal choice for space-constrained 5-V industrial bus interfaces.
Availability
SN74ABT16245ADGVR is available at Aetrix Electronics and suitable for industrial backplane interfaces, memory expansion subsystems, and FPGA-to-microcontroller bridges requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for SN74ABT16245ADGVR 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 expertise in high-speed interface ICs and industrial-grade reliability.
The SN74ABT16245ADGVR belongs to TI's Widebus™ family of advanced bus interface devices, engineered specifically for noise-resilient, high-drive parallel data transfer in industrial automation, test equipment, and communications infrastructure.
FAQ
What is the maximum clock/data rate supported by the SN74ABT16245ADGVR?
The SN74ABT16245ADGVR does not operate on a clock; it is an asynchronous transceiver. Its 3.9 ns typical propagation delay (tPLH/tPHL) at 5 V and 50 pF load supports reliable data transfer rates exceeding 100 MHz in well-terminated parallel bus systems. Actual achievable rate depends on trace length, loading, and system timing margins - verified via SPICE simulation using TI's IBIS model for SN74ABT16245ADGVR.
Does the SN74ABT16245ADGVR require external pull-up resistors on OE or DIR inputs?
No external pull-ups are required for normal operation of SN74ABT16245ADGVR, as OE and DIR are standard TTL-compatible inputs. However, to guarantee high-impedance state when VCC rises above 2.1 V during power-up, TI recommends tying OE to VCC via a pullup resistor (value determined by driver sink capability); DIR may be driven directly from logic outputs or left unconnected only if actively controlled.
Can the SN74ABT16245ADGVR be used in mixed-voltage systems (e.g., 5-V A bus and 3.3-V B bus)?
No - the SN74ABT16245ADGVR is a 5-V-only device with VIH = 2 V and VIL = 0.8 V, designed for 5-V TTL/CMOS logic families. It lacks voltage translation capability. For mixed-voltage interfacing, use dedicated level translators such as TXB0108 or SN74AVCH16T245 alongside SN74ABT16245ADGVR.
What is the thermal performance of the SN74ABT16245ADGVR in a typical 2-layer PCB layout?
In a standard 2-layer PCB with 1 oz copper and no thermal vias, SN74ABT16245ADGVR exhibits θJA = 93 °C/W. At 64 mA per output (worst-case IOL) and 16 active drivers, power dissipation reaches ~1.2 W, resulting in ~112°C junction rise above ambient - requiring derating or enhanced cooling. TI recommends ≥4 thermal vias under the exposed pad (if present) and inner-layer copper pour to maintain TJ < 125°C.
Is the SN74ABT16245ADGVR pin-compatible with older SN74ABT16245A variants in different packages?
Yes - SN74ABT16245ADGVR shares identical pinout, electrical behavior, and functional logic with all SN74ABT16245A variants (e.g., DGG, DL, WD packages). The TVSOP (DGV) footprint is mechanically distinct but electrically and logically interchangeable; no schematic or firmware changes are needed when migrating from DGG or DL packages to SN74ABT16245ADGVR.
SN74ABT16245ADGVR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74ABT
- 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:
- 32mA, 64mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-TVSOP
SN74ABT16245ADGVR FAQ
1.How can I place an order for SN74ABT16245ADGVR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74ABT16245ADGVR 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 SN74ABT16245ADGVR reliable?
The price and inventory of SN74ABT16245ADGVR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74ABT16245ADGVR is usually 5 days.
3.What payment methods are accepted for SN74ABT16245ADGVR?
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4.How is shipping managed for SN74ABT16245ADGVR?
SN74ABT16245ADGVR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74ABT16245ADGVR 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 SN74ABT16245ADGVR?
For technical support, including SN74ABT16245ADGVR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74ABT16245ADGVR requirements.
6.How does Aetrix verify that SN74ABT16245ADGVR is sourced from the original manufacturer or authorized distributors?
All SN74ABT16245ADGVR 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 SN74ABT16245ADGVR meets industry standards.
7.What is the process for return or replacement of SN74ABT16245ADGVR?
All SN74ABT16245ADGVR units undergo pre-shipment inspection (PSI). If there is an issue with SN74ABT16245ADGVR, 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 SN74ABT16245ADGVR part is unused and in its original packaging.
Return procedure for SN74ABT16245ADGVR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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