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Texas Instruments 74ACT16863DL
- Part No.:
- 74ACT16863DL
- Manufacturer:
- Texas Instruments
- Package:
- 56-BSSOP (0.295", 7.50mm Width)
- Datasheet:
-
74ACT16863DL.pdf
- Description:
- IC TXRX NON-INVERT 5.5V 56SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,451
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Product details
Overview
74ACT16863DL from Texas Instruments is an 18-bit noninverting bus transceiver with 3-state outputs, designed for asynchronous bidirectional data transfer between A and B buses in industrial and embedded systems. It operates from –40°C to 85°C, supports 5-V supply (4.5–5.5 V), delivers ±24 mA output drive, and features flow-through pinout for optimized PCB layout.
For engineers reviewing the 74ACT16863DL datasheet, 74ACT16863DL pinout, 74ACT16863DL application, or 74ACT16863DL equivalent, this device is selected for high-speed TTL-compatible bus isolation, dual 9-bit or single 18-bit configuration flexibility, and noise-minimized distributed power/ground pin architecture.
Technical Context
The 74ACT16863DL implements two independent 9-bit transceiver sections, each controlled by separate OEAB/OEBA inputs to enable A→B, B→A, or high-impedance isolation modes. Its EPIC™ 1-µm CMOS process ensures TTL-voltage compatibility at inputs and robust latch-up immunity (500 mA typical at 125°C).
Switching performance is characterized at VCC = 5 V ± 0.5 V: tPLH/tPHL ≤ 12.1 ns, tPZH/tPZL ≤ 14.7 ns, and tPHZ/tPLZ ≤ 12.5 ns. Distributed VCC/GND pins and shrink SSOP (DL) package reduce high-speed switching noise and support dense board layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V - compatible with standard 5-V TTL logic rails and tolerant of rail variation in industrial power supplies. |
| Output Drive | ±24 mA - sufficient to directly drive terminated bus lines without external buffers in medium-load applications. |
| Propagation Delay | ≤12.1 ns (tPLH/tPHL) - enables reliable operation in sub-100-MHz asynchronous bus systems. |
| Input Compatibility | TTL-voltage - accepts standard 0.8 V / 2.0 V logic thresholds, eliminating level-shifting in mixed-logic designs. |
| Operating Temperature | –40°C to +85°C - qualified for commercial/industrial environments including factory automation and telecom infrastructure. |
| Package | 56-pin SSOP (DL), 300-mil width - provides double the I/O density of standard SOIC in same PCB area, supporting compact system design. |
| Power Dissipation | 1.4 W max (at TA = 55°C) - requires minimal thermal management in typical airflow conditions. |
Pinout & Package
74ACT16863DL is housed in a 56-pin Shrink Small-Outline Package (SSOP-DL), 300-mil body width, 25-mil center-to-center pin pitch, with exposed thermal pad not present. Pin numbering follows standard TI DL-package top-view convention.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 28, 29, 56 | OEAB / OEBA control inputs (per section) | Active-low enables direction control: OEAB low → A→B; OEBA low → B→A; both high → isolation. |
| 2–10, 14–22, 31–39, 43–51 | A-port and B-port I/O pins (18× A, 18× B) | Noninverting bidirectional data paths; each pair (e.g., 1A1/1B1) forms one transceiver channel. |
| 11, 13, 23, 25, 26, 30, 40, 42, 52, 54 | GND | 10 dedicated ground pins distributed across package to minimize ground bounce and improve signal integrity. |
| 12, 24, 35, 46 | VCC | 4 dedicated VCC pins placed adjacent to GND pairs to reduce high-frequency supply impedance and switching noise. |
Key Features
| Feature | Design Value |
|---|---|
| Flow-through architecture | Input and output pins aligned on opposite sides (e.g., A1–A9 left, B1–B9 right), enabling straight PCB trace routing and reducing layer count. |
| Distributed VCC/GND pinning | Four VCC and ten GND pins interleaved across the package to lower simultaneous switching noise and improve EMI performance. |
| EPIC™ 1-µm CMOS process | Delivers 500-mA latch-up immunity at 125°C, enabling use in thermally demanding industrial enclosures without derating. |
| Configurable 9-bit or 18-bit operation | Two independent 9-bit sections allow flexible partitioning-e.g., separate address/data buses or redundant channel pairing. |
| TTL-input compatibility | Accepts standard 0.8 V / 2.0 V thresholds without external biasing, simplifying integration into legacy 5-V systems. |
Applications
| Industrial Backplane Interface | Legacy System Bus Extension |
|---|---|
|
Use Scenario: Isolating and extending parallel data paths between CPU and peripheral modules in programmable logic controllers (PLCs). IC Role / Device Role / Timing Role: Bidirectional bus transceiver managing asynchronous A/B bus handshaking with configurable 9-bit or 18-bit width. Use Value: Flow-through pinout reduces trace skew and layer transitions; ±24 mA drive sustains signal integrity over 15-cm backplane runs. |
Use Scenario: Interfacing modern microcontrollers to legacy ISA-style expansion slots requiring 5-V tolerant, high-drive transceivers. IC Role / Device Role / Timing Role: Level-translating and direction-controlled bus buffer enabling clean A↔B data exchange without timing constraints. Use Value: TTL-compatible inputs eliminate external voltage translators; distributed power/ground pins suppress noise in mixed-signal slot environments. |
| Test Equipment Data Acquisition | Automated Test Fixture Control |
|
Use Scenario: Routing sensor data from multiple analog front-end boards to a central digitizer in benchtop test systems. IC Role / Device Role / Timing Role: 18-bit wide, 3-state isolated transceiver synchronizing burst-mode transfers between isolated subsystems. Use Value: 12.1 ns max propagation delay supports >40 MHz effective throughput; 1.4 W thermal rating allows operation in enclosed test chassis. |
Use Scenario: Controlling parallel I/O lines for fixture actuation, DUT power sequencing, and status feedback in automated manufacturing testers. IC Role / Device Role / Timing Role: Robust bus interface IC providing galvanically isolated signal conditioning and drive strength for relay/solenoid drivers. Use Value: 500-mA latch-up immunity prevents field failure during ESD-prone handler operations; –40°C to +85°C range covers factory floor extremes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74ACT16245DL | 16-bit (vs. 18-bit); identical DL package, same 5-V specs, but lacks dual 9-bit section control granularity. | Not suitable when independent 9-bit bus partitioning or separate OEAB/OEBA control per section is required. | Select SN74ACT16245DL only if 16-bit width suffices and simplified control logic is preferred. |
| 74ACT16835DL | Inverting transceiver (vs. noninverting); otherwise matches pinout, timing, and drive specs of 74ACT16863DL. | Requires logic inversion in upstream/downstream logic or software; unsuitable where signal polarity must be preserved end-to-end. | Choose 74ACT16835DL only when system-level inversion is acceptable or already compensated elsewhere. |
Compared with SN74ACT16245DL and 74ACT16835DL, the 74ACT16863DL uniquely supports true dual 9-bit operation with independent OE control and preserves signal polarity-critical for deterministic bus arbitration and legacy protocol compliance.
Availability
74ACT16863DL is available at Aetrix Electronics and suitable for industrial backplane interfaces, legacy system bus extensions, and automated test fixture control requiring stable component supply, long-lifecycle support, and guaranteed 5-V TTL compatibility.
Supply support for 74ACT16863DL 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 heritage in high-reliability industrial and automotive components.
The 74ACT16863DL belongs to TI's Widebus™ family of high-speed CMOS transceivers, engineered specifically for noise-resilient, high-density parallel bus interfacing in industrial control and test equipment.
FAQ
What is the operating temperature range for the 74ACT16863DL?
The 74ACT16863DL is characterized for operation from –40°C to +85°C, making it suitable for industrial environments such as factory automation, motor drives, and outdoor telecom infrastructure where ambient temperatures exceed consumer-grade limits. This range is explicitly defined in the recommended operating conditions table of the SCAS162B datasheet and validated across production lots.
Does the 74ACT16863DL support independent 9-bit bus operation?
Yes, the 74ACT16863DL contains two functionally independent 9-bit transceiver sections, each with dedicated OEAB and OEBA inputs. This allows simultaneous or staggered control of A↔B data flow per section-enabling configurations like separate address/data buses or redundant channel pairing without external logic.
What package type is used for the 74ACT16863DL?
The 74ACT16863DL uses a 56-pin Shrink Small-Outline Package (SSOP-DL), 300-mil body width, with 25-mil center-to-center pin spacing. This DL package delivers twice the I/O density of standard SOIC in the same PCB footprint, as confirmed in TI's Package Option Addendum and mechanical drawings.
How does the 74ACT16863DL minimize switching noise?
The 74ACT16863DL minimizes high-speed switching noise via distributed VCC and GND pins-four VCC and ten GND terminals interleaved across the DL package-and its EPIC™ 1-µm CMOS process. This layout reduces simultaneous switching output (SSO) noise and improves power integrity, as documented in the "Distributed VCC and GND Pin Configuration" feature description.
Is the 74ACT16863DL pin-compatible with other Widebus™ transceivers?
No-the 74ACT16863DL has a unique 56-pin DL pinout optimized for its dual 9-bit architecture and flow-through layout. While other Widebus™ devices (e.g., 74ACT16245DL) share the DL package, they differ in pin count, signal assignment, and control logic; direct substitution would require PCB redesign and firmware validation.
74ACT16863DL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74ACT
- 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:
- 24mA, 24mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 56-SSOP
74ACT16863DL FAQ
1.How can I place an order for 74ACT16863DL through Aetrix?
Please submit a Request for Quotation (RFQ) for 74ACT16863DL 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 74ACT16863DL reliable?
The price and inventory of 74ACT16863DL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74ACT16863DL is usually 5 days.
3.What payment methods are accepted for 74ACT16863DL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74ACT16863DL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74ACT16863DL?
74ACT16863DL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74ACT16863DL 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 74ACT16863DL?
For technical support, including 74ACT16863DL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74ACT16863DL requirements.
6.How does Aetrix verify that 74ACT16863DL is sourced from the original manufacturer or authorized distributors?
All 74ACT16863DL 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 74ACT16863DL meets industry standards.
7.What is the process for return or replacement of 74ACT16863DL?
All 74ACT16863DL units undergo pre-shipment inspection (PSI). If there is an issue with 74ACT16863DL, 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 74ACT16863DL part is unused and in its original packaging.
Return procedure for 74ACT16863DL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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