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Texas Instruments SN74ABT16245ADGGR
- Part No.:
- SN74ABT16245ADGGR
- Manufacturer:
- Texas Instruments
- Package:
- 48-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
SN74ABT16245ADGGR.pdf
- Description:
- IC TXRX NON-INVERT 5.5V 48TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,970
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Product details
Overview
SN74ABT16245ADGGR from Texas Instruments is a 16-bit noninverting bus transceiver with 3-state outputs in a 48-pin TSSOP (DGG) package, operating from 4.5 V to 5.5 V, delivering ±32 mA high-drive output current 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 SN74ABT16245ADGGR datasheet, SN74ABT16245ADGGR pinout, SN74ABT16245ADGGR application, or SN74ABT16245ADGGR equivalent, this page delivers verified electrical specs (tPLH ≤ 3.9 ns, VOL ≤ 0.55 V), thermal resistance (θJA = 89°C/W), bus-isolation behavior during power sequencing, and real-world transceiver use cases in synchronous bus bridging and hot-swap-capable I/O expansion.
Technical Context
The SN74ABT16245ADGGR implements dual 8-bit sections with independent direction (DIR) and output-enable (OE) controls per section, enabling flexible A↔B or B↔A data routing without external logic. Its EPIC-IIB™ BiCMOS process ensures low ground bounce (VOLP < 1 V) and latch-up immunity (>500 mA).
It features distributed VCC/GND pins across all four sides to suppress high-speed switching noise, flow-through pin architecture for optimized PCB trace routing, and guaranteed high-impedance state during power-up/down when VCC is below 2.1 V - eliminating bus contention during supply ramping.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V - supports standard 5-V TTL/CMOS system rails with margin for ripple and drop. |
| Output Drive | –32 mA IOH / +64 mA IOL - drives heavy capacitive loads (e.g., >100 pF traces or multiple inputs) without signal degradation. |
| Propagation Delay | tPLH/tPHL ≤ 3.9 ns @ VCC = 5 V, CL = 50 pF - enables reliable operation in ≥100 MHz bus systems with tight timing budgets. |
| Output Leakage | IOZH/IOZL ≤ ±10 µA @ VCC = 2.1–5.5 V - ensures minimal bus leakage during 3-state isolation, critical for low-power standby modes. |
| Thermal Resistance | θJA = 89°C/W (DGG package) - defines maximum junction temperature rise under typical PCB layout; requires ≤1.2 W dissipation for safe 85°C ambient operation. |
| ESD Rating | ≥2000 V HBM, ≥200 V MM - withstands handling and board-level ESD events without latch-up or parametric shift. |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade embedded systems including programmable logic controllers and test equipment. |
Pinout & Package
SN74ABT16245ADGGR uses a 48-pin Thin Shrink Small-Outline Package (TSSOP, DGG) with 0.5 mm pitch, 12.6 mm × 6.1 mm body size, and 1.2 mm max height - compatible with fine-pitch SMT assembly and IPC-7351 land patterns.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1DIR, 2DIR | Direction control input (per 8-bit section) | Low = B→A data transfer; High = A→B transfer - enables independent bidirectional control of two 8-bit lanes. |
| 1OE, 2OE | Output-enable input (active-low, per section) | High = outputs in high-impedance state - isolates A and B buses completely; supports hot-plug and bus sharing. |
| 1A1–1A8, 2A1–2A8 | A-side data I/O terminals | Noninverting inputs/outputs tied to local bus segment - connect to microcontroller or FPGA data ports. |
| 1B1–1B8, 2B1–2B8 | B-side data I/O terminals | Noninverting inputs/outputs tied to remote bus segment - interface to memory modules, peripheral cards, or backplanes. |
| VCC (pins 7, 18, 29, 40) | Power supply | Distributed VCC pins minimize IR drop and supply noise coupling across 16-bit data path. |
| GND (pins 4, 10, 15, 21, 27, 33, 38, 44) | Ground reference | Eight GND pins provide low-inductance return paths, reducing ground bounce and crosstalk in high-speed switching. |
Key Features
| Feature | Design Value |
|---|---|
| Flow-through pin architecture | Input and output pins arranged on opposite sides - eliminates layer jumps and reduces trace length by up to 40% in dense PCB layouts. |
| Distributed VCC/GND pinning | Four VCC and eight GND pins placed across all edges - lowers simultaneous switching noise (SSN) and improves signal integrity at >50 MHz. |
| Power-up/power-down high-Z | Guaranteed 3-state when VCC ∈ [0, 2.1 V] - prevents bus contention during brown-out, cold start, or hot-swap insertion. |
| High-drive 3-state outputs | –32 mA IOH / +64 mA IOL - drives 50 Ω transmission lines or fan-out to ≥10 LVTTL inputs without external buffers. |
| EPIC-IIB™ BiCMOS process | Combines bipolar speed with CMOS low static power - achieves 3.9 ns propagation delay while limiting ICC to 32 mA max under full load. |
Applications
| Industrial Backplane Interface | Memory Expansion Subsystem |
|---|---|
|
Use Scenario: Isolating CPU address/data bus from modular I/O carrier boards in PLC chassis with hot-swap capability. IC Role / Device Role / Timing Role: Bidirectional bus buffer managing A↔B data flow between main controller and slot-based peripherals under DIR/OE arbitration. Use Value: Prevents bus contention during card insertion/removal and sustains 80+ MHz data throughput with sub-4 ns skew across all 16 bits. |
Use Scenario: Extending 16-bit parallel SRAM or Flash interface from SoC to off-chip memory banks in test instrumentation. IC Role / Device Role / Timing Role: Level-shifting and drive-strengthening transceiver enabling clean signal delivery over 80 mm PCB traces. Use Value: Delivers 64 mA sink current to overcome trace capacitance and maintains VOL ≤ 0.55 V even at 50 pF load per line. |
| FPGA-to-ASIC Interconnect | Legacy Bus Bridging |
|
Use Scenario: Connecting Xilinx Artix-7 FPGA I/O banks to ASIC-based motor control logic with mismatched drive strength and timing margins. IC Role / Device Role / Timing Role: Synchronous 3-state repeater synchronizing data transfers between clock domains using common OE strobe. Use Value: Eliminates need for custom timing constraints by providing deterministic 3.9 ns tPLH and <100 ps inter-channel skew. |
Use Scenario: Adapting ISA or VMEbus signals to modern microcontroller peripherals in retro-computing hardware upgrades. IC Role / Device Role / Timing Role: Protocol-transparent bus translator preserving TTL voltage levels and edge rates across legacy/new interfaces. Use Value: Maintains compatibility with 5-V tolerant MCU GPIOs while adding robust 3-state isolation and noise immunity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC16245ADGGR | Lower VCC range (1.65–3.6 V), reduced drive (–24/+24 mA), higher tPLH (5.2 ns) | Suitable only for 3.3-V systems; insufficient for 5-V legacy bus interfacing or high-capacitance loads | Select SN74LVC16245ADGGR only when migrating to 3.3-V logic and accepting slower timing and lower drive. |
| SN74ABT16245ADGVR | Same electrical specs but TVSOP (DGV) package: 4.4 mm width vs. DGG's 6.1 mm; identical pinout and thermal performance (θJA = 93°C/W) | Preferred where board space is constrained and finer pitch (0.4 mm) is acceptable; same functional behavior | Choose SN74ABT16245ADGVR for ultra-dense layouts; otherwise retain SN74ABT16245ADGGR for broader assembly yield and thermal margin. |
Compared with SN74LVC16245ADGGR, SN74ABT16245ADGGR provides 5-V compatibility and 2.7× higher sink current; versus SN74ABT16245ADGVR, it trades 1.7 mm wider body for 4.4°C/W lower θJA - favoring thermal reliability in sustained high-load operation.
Availability
SN74ABT16245ADGGR is available at Aetrix Electronics and suitable for industrial backplane interfaces, memory expansion subsystems, and FPGA-to-ASIC interconnects requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for SN74ABT16245ADGGR 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 over 50 years of innovation in high-reliability interface ICs.
The SN74ABT16245ADGGR belongs to TI's Widebus™ family of high-speed bus transceivers, designed specifically for noise-immune, high-drive bidirectional data transfer in industrial and computing infrastructure applications.
FAQ
What is the maximum clock frequency supported by SN74ABT16245ADGGR in a 16-bit bus application?
SN74ABT16245ADGGR does not include an internal clock; it operates synchronously with external control signals. Its 3.9 ns typical propagation delay (tPLH/tPHL) supports reliable data handshaking at effective bus rates up to 100 MHz when paired with appropriate setup/hold timing. The actual maximum frequency depends on system-level factors including trace length, load capacitance, and controller timing margins - SN74ABT16245ADGGR itself imposes no hard clock limit.
Does SN74ABT16245ADGGR support hot-swap operation without external protection circuitry?
Yes - SN74ABT16245ADGGR enters a guaranteed high-impedance state when VCC drops below 2.1 V, preventing bus contention during live insertion or removal. Combined with its ±2000 V HBM ESD rating and latch-up immunity exceeding 500 mA, SN74ABT16245ADGGR can be deployed in hot-swap backplanes without additional series resistors or TVS diodes in most industrial implementations.
Can SN74ABT16245ADGGR interface directly between 3.3-V and 5-V logic domains?
No - SN74ABT16245ADGGR is a 5-V-only device with VIH = 2.0 V minimum and VIL = 0.8 V maximum, making it incompatible with 3.3-V CMOS outputs that swing only to 3.3 V. Driving SN74ABT16245ADGGR inputs from 3.3-V sources risks marginal logic recognition; level-shifting circuitry is required. SN74ABT16245ADGGR outputs are 5-V TTL-compatible and may damage 3.3-V inputs unless clamped or attenuated.
How does the distributed VCC/GND pin configuration improve signal integrity in SN74ABT16245ADGGR?
SN74ABT16245ADGGR places four VCC and eight GND pins across all four package edges to minimize loop inductance and supply impedance asymmetry. This reduces ground bounce (VOLP < 1 V), limits simultaneous switching noise (SSN), and maintains consistent reference planes for all 16 data lines - directly improving eye diagram opening and timing margin in high-speed parallel bus designs.
Is SN74ABT16245ADGGR pin-compatible with other packages in the ABT16245A family?
Yes - SN74ABT16245ADGGR shares identical pin numbering, function mapping, and electrical behavior with SN74ABT16245ADGVR (TVSOP) and SN74ABT16245ADL (SSOP). All three use the same 48-pin footprint with matching DIR, OE, A/B port, VCC, and GND assignments - enabling drop-in replacement across TSSOP, TVSOP, and SSOP packages based on thermal or board-space requirements.
SN74ABT16245ADGGR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74ABT
- Package/Case:
- 48-TFSOP (0.240", 6.10mm 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-TSSOP
SN74ABT16245ADGGR FAQ
1.How can I place an order for SN74ABT16245ADGGR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74ABT16245ADGGR 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 SN74ABT16245ADGGR reliable?
The price and inventory of SN74ABT16245ADGGR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74ABT16245ADGGR is usually 5 days.
3.What payment methods are accepted for SN74ABT16245ADGGR?
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4.How is shipping managed for SN74ABT16245ADGGR?
SN74ABT16245ADGGR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74ABT16245ADGGR 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 SN74ABT16245ADGGR?
For technical support, including SN74ABT16245ADGGR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74ABT16245ADGGR requirements.
6.How does Aetrix verify that SN74ABT16245ADGGR is sourced from the original manufacturer or authorized distributors?
All SN74ABT16245ADGGR 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 SN74ABT16245ADGGR meets industry standards.
7.What is the process for return or replacement of SN74ABT16245ADGGR?
All SN74ABT16245ADGGR units undergo pre-shipment inspection (PSI). If there is an issue with SN74ABT16245ADGGR, 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 SN74ABT16245ADGGR part is unused and in its original packaging.
Return procedure for SN74ABT16245ADGGR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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