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Texas Instruments SN74ABT16863DL
- Part No.:
- SN74ABT16863DL
- Manufacturer:
- Texas Instruments
- Package:
- 56-BSSOP (0.295", 7.50mm Width)
- Datasheet:
-
SN74ABT16863DL.pdf
- Description:
- IC TXRX NON-INVERT 5.5V 56SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,705
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Product details
Overview
SN74ABT16863DL from Texas Instruments is an 18-bit noninverting bus transceiver with 3-state outputs in a 56-pin SSOP (DL) package, rated for –40°C to 85°C operation. It supports bidirectional asynchronous data transfer between A and B buses, delivers ±32-mA/±64-mA drive strength, features flow-through pinout for optimized PCB layout, and maintains high-impedance state during power-up/down below 2.1 V.
For engineers reviewing the SN74ABT16863DL datasheet, SN74ABT16863DL pinout, SN74ABT16863DL application, or SN74ABT16863DL equivalent, this page provides verified functional identity, validated 56-pin DL package mapping, confirmed 18-bit dual-9-bit transceiver architecture, real-world timing specs (tPLH/tPHL ≤ 3.7 ns), and two production-validated alternative parts for system-level bus isolation and level-shifting designs.
Technical Context
The SN74ABT16863DL implements dual independent 9-bit transceiver sections, each controlled by separate OEAB/OEBA inputs enabling selective A→B or B→A data flow. Its EPIC-IIB BiCMOS process ensures low ground bounce (VOLP < 1 V) and latch-up immunity (>500 mA per JESD-17).
It operates at 4.5–5.5 V with TTL-compatible inputs and outputs, supports CL = 50 pF loads, and exhibits propagation delays as low as 1 ns (typical) and enable/disable times ≤ 5.7 ns. Distributed VCC/GND pins minimize switching noise in high-speed parallel bus environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Function | 18-bit noninverting bus transceiver with 3-state outputs; configurable as two 9-bit or one 18-bit path |
| Supply Voltage | 4.5 V to 5.5 V - ensures compatibility with 5-V TTL and mixed-voltage backplane systems |
| Drive Strength | –32 mA IOH / 64 mA IOL - drives heavy capacitive loads and long traces without external buffers |
| Propagation Delay | tPLH/tPHL ≤ 3.7 ns @ VCC = 5 V, CL = 50 pF - enables >200 MHz bus operation in synchronous designs |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade embedded control and data acquisition systems |
| Package | 56-pin SSOP (DL), 300-mil width - surface-mount compatible with standard reflow profiles (MSL Level-1) |
| Output Control | Dual OE inputs (OEAB, OEBA) per 9-bit section - allows independent direction control without external logic |
Pinout & Package
SN74ABT16863DL uses a 56-pin Shrink Small-Outline Package (SSOP-DL), 300-mil body width, with 0.025-inch (0.635 mm) lead pitch and flow-through pin arrangement minimizing trace crossovers.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OEAB, 2OEAB | Output Enable A→B | Active-low control for A-to-B data path in respective 9-bit sections |
| 1OEBA, 2OEBA | Output Enable B→A | Active-low control for B-to-A data path in respective 9-bit sections |
| 1A1–1A9, 2A1–2A9 | A-side data inputs/outputs | Noninverting bidirectional I/O ports for first and second 9-bit A buses |
| 1B1–1B9, 2B1–2B9 | B-side data inputs/outputs | Noninverting bidirectional I/O ports for first and second 9-bit B buses |
| VCC (pins 7, 22, 35, 46) | Power supply | Distributed VCC pins reduce simultaneous switching noise across 18-bit bus |
| GND (pins 4, 11, 14, 15, 25, 32, 39, 42, 43, 50) | Ground reference | 10 dedicated GND pins ensure low-impedance return paths and signal integrity |
Key Features
| Feature | Design Value |
|---|---|
| Flow-through architecture | Input and output pins aligned on opposite sides of package - eliminates layer jumps and reduces routing congestion on dense PCBs |
| High-impedance during power sequencing | Outputs remain Hi-Z when VCC is 0–2.1 V - prevents bus contention during power-up/down in hot-swap or multi-rail systems |
| Low ground bounce | VOLP < 1 V @ VCC = 5 V, TA = 25°C - maintains signal integrity in high-speed parallel interfaces with shared ground planes |
| Latch-up immunity | Exceeds 500 mA per JEDEC JESD-17 - ensures robustness against transient overcurrent events in industrial environments |
| EPIC-IIB BiCMOS process | Combines bipolar speed with CMOS low static power - achieves 32-mA drive with ICC < 2 mA in disabled state |
Applications
| Industrial Backplane Interface | Legacy System Bus Extension |
|---|---|
Use Scenario: Isolating and extending 16–18-bit parallel address/data buses between CPU module and I/O expansion cards in programmable logic controllers. IC Role / Device Role / Timing Role: Bidirectional bus transceiver managing A↔B data flow under independent OE control, with sub-4 ns propagation enabling cycle-accurate timing alignment. Use Value: Eliminates need for discrete direction-control logic and pull-up networks while maintaining signal fidelity across 15 cm backplane traces. |
Use Scenario: Interfacing modern microcontroller-based subsystems with legacy ISA or VMEbus peripherals requiring 5-V tolerant, high-drive transceivers. IC Role / Device Role / Timing Role: Level-shifting and bus-driving interface translating between newer low-power logic and older high-current bus standards. Use Value: Delivers 64-mA sink current to meet legacy bus loading requirements without external drivers or heat sinks. |
| Test Equipment Data Path | Modular Instrumentation Chassis |
Use Scenario: Routing high-speed digital stimulus/response signals between FPGA-based pattern generators and DUT interface boards in automated test equipment. IC Role / Device Role / Timing Role: Synchronized 18-bit data conduit with deterministic enable/disable timing (tPZL ≤ 5.2 ns) for precise test vector alignment. Use Value: Enables glitch-free bus arbitration during test mode transitions, critical for parametric testing of memory and logic devices. |
Use Scenario: Managing inter-slot communication in modular PXI or CompactPCI chassis where multiple controller and peripheral modules share a common backplane. IC Role / Device Role / Timing Role: Hot-swap-safe bus isolator ensuring Hi-Z state during slot insertion/removal and preventing backplane contention. Use Value: Built-in power-sequence immunity (Hi-Z below 2.1 V) removes need for auxiliary power-good monitoring circuitry. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74ABT162245DL | 16-bit (not 18-bit); dual-OE but no split 9-bit sectioning; identical DL package and 5-V operation | Suitable for 16-bit-only buses; lacks independent 9-bit partitioning for asymmetric bus topologies | Select when bus width matches exactly and split-section control is unnecessary |
| SN74LVC16835DL | 18-bit, but 3.3-V only (1.65–3.6 V); lower drive (–24/+24 mA); different OE polarity (active-high) | Requires level translation for 5-V systems; unsuitable for direct replacement without voltage adaptation | Choose only in pure 3.3-V domains where lower power and smaller die size outweigh drive and compatibility needs |
Compared with SN74ABT16863DL, SN74ABT162245DL offers matching 5-V operation and package but sacrifices 2 bits and section independence, while SN74LVC16835DL trades voltage compatibility and drive strength for lower static power and 3.3-V integration - neither is pin-compatible, and both require schematic and layout review for substitution.
Availability
SN74ABT16863DL is available at Aetrix Electronics and suitable for industrial backplane interfaces, legacy bus extension systems, and automated test equipment requiring stable component supply, long-term lifecycle support, and guaranteed 5-V TTL compatibility.
Supply support for SN74ABT16863DL 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 delivering analog, embedded processing, and logic solutions with emphasis on reliability, performance, and broad application coverage.
The SN74ABT16863DL belongs to TI's Widebus™ family of high-speed bus interface ICs, engineered specifically for robust, low-noise, high-drive parallel data transfer in industrial, instrumentation, and computing infrastructure.
FAQ
What is the operating voltage range for SN74ABT16863DL?
The SN74ABT16863DL operates from 4.5 V to 5.5 V DC. This range ensures full compatibility with standard 5-V TTL logic families and accommodates typical power supply tolerances in industrial backplane and instrumentation applications. Operation outside this range may result in undefined behavior or damage, as specified in the absolute maximum ratings (–0.5 V to 7 V).
Does SN74ABT16863DL support hot-swap or power sequencing safety?
Yes, SN74ABT16863DL enters a high-impedance state when VCC is between 0 and 2.1 V, preventing bus contention during power-up or power-down sequences. For guaranteed Hi-Z above 2.1 V, OE inputs must be tied to VCC via a pullup resistor - minimum value determined by driver sink capability, per the datasheet guidance.
How many independent transceiver sections does SN74ABT16863DL provide?
The SN74ABT16863DL integrates two independent 9-bit transceiver sections, each with dedicated OEAB and OEBA inputs. This allows simultaneous or selective A↔B data flow control across two distinct 9-bit buses - a key architectural feature distinguishing it from monolithic 18-bit transceivers lacking section-level granularity.
What is the maximum output drive capability of SN74ABT16863DL?
SN74ABT16863DL delivers –32 mA (IOH) and +64 mA (IOL) per output, measured at VCC = 4.5 V. This high drive strength enables direct interfacing with heavily loaded buses, long PCB traces, or legacy peripherals requiring robust current sourcing/sinking - eliminating need for external buffer stages in most industrial implementations.
Is SN74ABT16863DL pin-compatible with other Widebus™ transceivers like SN74ABT162245?
No, SN74ABT16863DL is not pin-compatible with SN74ABT162245DL or other members of the Widebus™ family. Its 56-pin DL package, dual-9-bit sectioning, and specific pin assignment (including 10 GND and 4 VCC pins) differ fundamentally from 48-pin or 56-pin variants with alternate bus widths or control architectures - PCB layout changes are required for substitution.
SN74ABT16863DL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74ABT
- Package/Case:
- 56-BSSOP (0.295", 7.50mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Logic Type:
- Transceiver, Non-Inverting
- Number of Elements:
- 2
- Number of Bits per Element:
- 9
- 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:
- 56-SSOP
SN74ABT16863DL FAQ
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Please submit a Request for Quotation (RFQ) for SN74ABT16863DL 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 SN74ABT16863DL reliable?
The price and inventory of SN74ABT16863DL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74ABT16863DL is usually 5 days.
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Once your SN74ABT16863DL 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 SN74ABT16863DL?
For technical support, including SN74ABT16863DL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74ABT16863DL requirements.
6.How does Aetrix verify that SN74ABT16863DL is sourced from the original manufacturer or authorized distributors?
All SN74ABT16863DL 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 SN74ABT16863DL meets industry standards.
7.What is the process for return or replacement of SN74ABT16863DL?
All SN74ABT16863DL units undergo pre-shipment inspection (PSI). If there is an issue with SN74ABT16863DL, 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 SN74ABT16863DL part is unused and in its original packaging.
Return procedure for SN74ABT16863DL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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