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Texas Instruments SN74ABT863DWR
- Part No.:
- SN74ABT863DWR
- Manufacturer:
- Texas Instruments
- Package:
- 24-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SN74ABT863DWR.pdf
- Description:
- IC TXRX NON-INVERT 5.5V 24SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,422
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Product details
Overview
SN74ABT863DWR from Texas Instruments is a 9-bit noninverting bus transceiver with 3-state outputs, designed for asynchronous bidirectional data transfer between A and B buses in industrial control and legacy computing systems. It operates at 4.5–5.5 V, delivers ±32-mA high-drive outputs, features power-up/power-down high-impedance protection, and is rated for –40°C to 85°C.
For engineers reviewing the SN74ABT863DWR datasheet, SN74ABT863DWR pinout, SN74ABT863DWR application, or SN74ABT863DWR equivalent, key selection criteria include its dual OE control architecture (OEAB1/OEAB2 and OEBA1/OEBA2), latch capability, ground-bounce performance (<1 V VOLP), and SOIC-24 packaging with tape-and-reel delivery (2000 pcs/reel).
Technical Context
The SN74ABT863DWR implements independent enable logic for A→B and B→A directions via paired OE inputs, enabling flexible timing control without external latches. Its EPIC-IIB BiCMOS process ensures low static current (≤250 µA when disabled) and robust noise immunity.
It supports true 3-state isolation during power transitions: outputs enter high-Z when VCC is below 2.1 V, and remain isolated above that threshold if OE is pulled up. The device meets JESD 17 latch-up (>500 mA) and MIL-STD-883 ESD (>2000 V HBM) requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V - Ensures compatibility with 5-V TTL/CMOS systems and tolerates rail droop during transient load conditions. |
| Output Drive | –32 mA IOH / 64 mA IOL - Enables direct interface with multiple TTL loads or long PCB traces without buffering. |
| Propagation Delay | 1 ns to 7 ns (tPLH/tPHL) - Supports high-speed bus handshaking up to ~100 MHz in point-to-point configurations. |
| Input Leakage | ±1 µA (control pins), ±20 µA (A/B ports) - Minimizes bus loading and prevents unintended state changes on unterminated lines. |
| Thermal Resistance | 81°C/W θJA (DW package) - Allows sustained operation at full drive current in ambient temperatures up to 85°C without forced airflow. |
| ESD Rating | >2000 V HBM - Protects against handling damage during manual assembly and board-level integration. |
Pinout & Package
SN74ABT863DWR is housed in a 24-pin SOIC (DW) package with standard 0.300-inch body width, gull-wing leads, and RoHS-compliant NiPdAu plating. Pin 1 is located in Quadrant Q1 per tape-and-reel orientation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 11, 13, 14, 23 | A1–A9 (A-bus inputs/outputs) | Bidirectional data terminals for A-side bus; internally connected to transceiver core with 3-state control. |
| 2–10 | B1–B9 (B-bus inputs/outputs) | Corresponding bidirectional data terminals for B-side bus; electrically isolated from A side when OE inactive. |
| 12 | GND | Power return reference for all internal circuitry and output drivers. |
| 24 | VCC | 5-V supply input; decoupling capacitor required within 1 cm for stable switching performance. |
| 15, 16 | OEAB1, OEAB2 | Paired enables for A→B direction; both low activates A-to-B transmission; either high disables output. |
| 17, 18 | OEBA1, OEBA2 | Paired enables for B→A direction; both low activates B-to-A transmission; either high disables output. |
Key Features
| Feature | Design Value |
|---|---|
| EPIC-IIB BiCMOS Process | Reduces dynamic power by >40% vs. standard bipolar TTL while retaining 5-V compatibility and drive strength. |
| Dual-Pair Output Enable Logic | Enables independent A→B and B→A control without external gating; supports simultaneous latching of both buses. |
| Power-Up/Down High-Z Protection | Guarantees bus isolation during brown-out or hot-insertion events-no external reset sequencing required. |
| High-Drive Outputs | –32 mA source / 64 mA sink capability drives 10+ standard TTL loads or compensates for 15-cm PCB trace capacitance. |
| Low Ground Bounce | VOLP < 1 V at 5 V/25°C - Prevents false logic transitions in adjacent channels during simultaneous switching. |
Applications
| Industrial Backplane Interface | Legacy CPU Bus Extension |
|---|---|
|
Use Scenario: Isolating and extending parallel address/data buses between PLC modules operating at different power domains. IC Role / Device Role / Timing Role: Bidirectional level-consistent bus transceiver managing A↔B data flow with independent OE control for arbitration. Use Value: Eliminates need for discrete buffers and direction-control logic; maintains signal integrity across 20-cm backplane runs at 20-MHz burst rates. |
Use Scenario: Adding peripheral expansion slots to 1980s–1990s microcomputer architectures (e.g., ISA, VME) requiring 9-bit data path extension. IC Role / Device Role / Timing Role: Noninverting 3-state transceiver enabling synchronous read/write handshaking between CPU and add-on cards. Use Value: Matches original system timing budgets (tPLH ≤ 7 ns); supports legacy 5-V TTL voltage thresholds without level-shifting components. |
| Test Equipment Data Capture | Automated Test Fixture Control |
|
Use Scenario: Capturing parallel digital waveforms from DUTs using high-impedance sampling heads connected to logic analyzers. IC Role / Device Role / Timing Role: Bus isolator and driver placed between DUT and acquisition front-end to prevent loading and ensure clean edge capture. Use Value: Input leakage ≤20 µA avoids signal distortion on high-Z test nodes; 64-mA sink handles capacitive loads from long probe cables. |
Use Scenario: Controlling multiple relay banks or solenoid drivers from a centralized microcontroller via shared 9-bit command bus. IC Role / Device Role / Timing Role: Directional bus repeater translating MCU commands to isolated actuator control lines with configurable enable timing. Use Value: Dual OE pairs allow staggered activation of relay groups; high-drive outputs directly drive 5-V optocoupler inputs without external transistors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 9-bit bus transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74ABT245DW | 8-bit (not 9-bit); single-direction OE; identical SOIC-20 package and drive specs (–32 mA/64 mA). | Lacks ninth bit and dual-pair OE logic; unsuitable for systems requiring 9-bit alignment or independent A/B arbitration. | Select only if bus width is strictly 8-bit and simplified enable control suffices. |
| SN74LVC8T245PW | 8-bit; dual-supply (1.65–5.5 V); lower drive (–24 mA/24 mA); TSSOP-24 package. | Supports mixed-voltage translation but cannot match SN74ABT863DWR's 64-mA sink or latch function. | Choose for voltage-level shifting in modern low-power designs-not for legacy 5-V high-drive or latch requirements. |
Compared with SN74ABT245DW and SN74LVC8T245PW, the SN74ABT863DWR uniquely provides 9-bit width, dual-pair OE control for independent bus direction management, and higher sink current-making it irreplaceable in legacy industrial backplanes and CPU expansion interfaces requiring precise timing and robust drive.
Availability
SN74ABT863DWR is available at Aetrix Electronics and suitable for industrial automation, legacy computing upgrades, and automated test equipment requiring stable component supply, long-lifecycle support, and tape-and-reel delivery for SMT production.
Supply support for SN74ABT863DWR 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 90 years of innovation in industrial, automotive, and communications markets.
The ABT logic family-including SN74ABT863DWR-is engineered for high-speed, high-drive 5-V TTL-compatible applications in harsh environments, emphasizing reliability, noise immunity, and seamless integration into legacy and upgrade systems.
FAQ
What is the operating temperature range for SN74ABT863DWR?
The SN74ABT863DWR is characterized for operation from –40°C to +85°C, making it suitable for industrial environments where ambient temperatures exceed commercial-grade limits. This range is validated per TI's recommended operating conditions and confirmed in the SCBS201E datasheet revision July 1998. The SN74ABT863DWR maintains full electrical performance-including tPLH ≤ 7 ns and VOL ≤ 0.55 V-at the extremes of this range.
Does SN74ABT863DWR support latch functionality?
Yes, the SN74ABT863DWR supports latch operation: when both OEAB1 and OEAB2 are low while both OEBA1 and OEBA2 are also low, the device enters "Latch A and B" mode per the Function Table. In this state, data present on the A and B buses is held transparently across the transceiver, enabling temporary storage without external flip-flops. This behavior is explicitly defined in the SCBS201E datasheet Section "FUNCTION TABLE".
What package type and reel size does SN74ABT863DWR use?
SN74ABT863DWR is supplied in a 24-pin SOIC (DW) package with tape-and-reel packaging: 2000 units per large reel (reel diameter 330 mm, width 24.4 mm). Pin 1 orientation follows Quadrant Q1 per TI's tape specification. This format is optimized for high-volume SMT placement and matches TI's official packaging addendum dated November 2025.
How does SN74ABT863DWR handle power-up and power-down sequences?
The SN74ABT863DWR guarantees high-impedance outputs during power transitions: when VCC is between 0 V and 2.1 V, all outputs are automatically in 3-state regardless of OE logic levels. Above 2.1 V, OE must be actively pulled high (e.g., via resistor to VCC) to maintain isolation. This behavior eliminates bus contention during cold start, hot-swap, or brown-out events-verified in the "Recommended Operating Conditions" table of SCBS201E.
Is SN74ABT863DWR RoHS compliant and what is its MSL rating?
Yes, SN74ABT863DWR is RoHS compliant (lead-free NiPdAu finish) and carries a Moisture Sensitivity Level (MSL) rating of Level-1 at 260°C peak reflow, meaning it is not moisture-sensitive and requires no baking prior to soldering. This is documented in TI's Packaging Information Addendum and confirmed for the DW package variant under orderable part number SN74ABT863DWR.
SN74ABT863DWR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74ABT
- Package/Case:
- 24-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Logic Type:
- Transceiver, Non-Inverting
- Number of Elements:
- 1
- 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:
- 24-SOIC
SN74ABT863DWR FAQ
1.How can I place an order for SN74ABT863DWR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74ABT863DWR 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 SN74ABT863DWR reliable?
The price and inventory of SN74ABT863DWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74ABT863DWR is usually 5 days.
3.What payment methods are accepted for SN74ABT863DWR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74ABT863DWR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74ABT863DWR?
SN74ABT863DWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74ABT863DWR 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 SN74ABT863DWR?
For technical support, including SN74ABT863DWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74ABT863DWR requirements.
6.How does Aetrix verify that SN74ABT863DWR is sourced from the original manufacturer or authorized distributors?
All SN74ABT863DWR 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 SN74ABT863DWR meets industry standards.
7.What is the process for return or replacement of SN74ABT863DWR?
All SN74ABT863DWR units undergo pre-shipment inspection (PSI). If there is an issue with SN74ABT863DWR, 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 SN74ABT863DWR part is unused and in its original packaging.
Return procedure for SN74ABT863DWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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