My Inquiry
My Account
Texas Instruments 74ACT16863DLR
- Part No.:
- 74ACT16863DLR
- Manufacturer:
- Texas Instruments
- Package:
- 56-BSSOP (0.295", 7.50mm Width)
- Datasheet:
-
74ACT16863DLR.pdf
- Description:
- IC TXRX NON-INVERT 5.5V 56SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,776
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
74ACT16863DLR 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 high-speed digital systems. It operates at 4.5–5.5 V, supports ±24 mA output drive, delivers tPLH/tPHL ≤ 12.1 ns at 5 V, and features flow-through pinout for optimized PCB layout in industrial control and computing backplanes.
For engineers reviewing the 74ACT16863DLR datasheet, 74ACT16863DLR pinout, 74ACT16863DLR application, or 74ACT16863DLR equivalent, key selection criteria include its dual 9-bit configurable operation, TTL-compatible inputs, distributed VCC/GND pinning for noise reduction, and SSOP-56 package compatibility with legacy Widebus™ system designs.
Technical Context
The 74ACT16863DLR implements two independent 9-bit transceiver sections, each controlled by dedicated OEAB/OEBA inputs to enable A→B, B→A, or high-impedance isolation modes. Its EPIC™ 1-µm CMOS process ensures 500-mA latch-up immunity at 125°C and supports operation from –40°C to 85°C.
It uses a flow-through architecture with interleaved A/B I/O pins and distributed power/ground terminals (12× GND, 6× VCC) to minimize simultaneous switching noise. Input transition rate is specified up to 10 ns/V, and unused inputs must be tied high or low per TI design guidance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V - Ensures compatibility with standard 5-V TTL and CMOS logic rails without level-shifting. |
| Output Drive | ±24 mA - Sufficient to directly drive terminated bus lines without external buffers in mid-density backplane applications. |
| Propagation Delay | tPLH/tPHL ≤ 12.1 ns @ 5 V - Enables reliable operation in systems with ≤83 MHz data strobe timing budgets. |
| Input Compatibility | TTL-voltage compatible (VIH = 2 V, VIL = 0.8 V) - Interfaces seamlessly with legacy 74LS/74F logic without pull-ups or translators. |
| Power Dissipation | 1.4 W max @ TA = 55°C - Dictates thermal pad requirements and airflow needs in dense board layouts. |
| ESD Immunity | ≥2 kV HBM - Meets basic handling robustness for assembly in non-classified environments. |
| Operating Temperature | –40°C to +85°C - Qualified for commercial and extended-industrial ambient conditions. |
Pinout & Package
74ACT16863DLR is housed in a 56-pin Shrink Small-Outline Package (SSOP-DL), 300-mil body width, 0.025-inch pin pitch, with exposed thermal pad not electrically connected. Pin 1 is marked via notch or dot; top-side marking includes "74ACT16863" and date code.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 28, 29, 56 | OEAB / OEBA (Section 1 & 2) | Active-low output-enable controls direction per 9-bit section: OEAB low enables A→B; OEBA low enables B→A. |
| 2–10, 14–22, 31–39, 43–51 | A1–A9 / B1–B9 (I/O) | Bidirectional data terminals - function as inputs or outputs depending on OE state; internally noninverting. |
| 11, 13, 23, 25, 30, 40, 42, 52 | GND | Eight dedicated ground pins distributed across package to reduce ground bounce during simultaneous switching. |
| 12, 24, 35, 46 | VCC | Four VCC pins placed near I/O banks to minimize supply impedance and improve transient response. |
Key Features
| Feature | Design Value |
|---|---|
| Flow-through architecture | Input and output pins arranged linearly (A1–A9 → B1–B9) to eliminate layer jumps and reduce trace length in high-speed routing. |
| Distributed VCC/GND | 6 VCC and 12 GND pins interleaved across the package to lower simultaneous switching noise (SSN) by >30% vs. single-rail SSOPs. |
| EPIC™ process technology | 1-µm CMOS fabrication delivers 500-mA latch-up immunity at 125°C - critical for reliability in thermally stressed industrial enclosures. |
| Configurable 9-bit dual mode | Two independent OE pairs allow use as either one 18-bit transceiver or two isolated 9-bit channels - increases board-level flexibility. |
| TTL-compatible inputs | Accepts standard 74LS logic thresholds (VIH ≥ 2 V, VIL ≤ 0.8 V) - eliminates need for input level shifters in mixed-logic systems. |
Applications
| Industrial Backplane Interface | Legacy System Bus Extension |
|---|---|
|
Use Scenario: Extending ISA or VMEbus segments between CPU and I/O modules in programmable logic controllers (PLCs). IC Role / Device Role / Timing Role: Bidirectional bus isolator enabling hot-swap-capable data path arbitration between master and slave cards. Use Value: Flow-through pinout reduces signal skew to <100 ps across all 18 bits, maintaining setup/hold margins under 50-MHz clock domains. |
Use Scenario: Interfacing FPGA-based peripheral cards with aging microprocessor boards using 5-V TTL signaling. IC Role / Device Role / Timing Role: Level-translation and bus-driving transceiver supporting both address and data multiplexing schemes. Use Value: ±24 mA drive strength sustains signal integrity over 15-cm stubbed traces with 50-pF load, eliminating need for repeaters. |
| Test Equipment Data Path | Automated Test Fixture Control |
|
Use Scenario: Routing parallel test vectors between pattern generator and DUT interface in ATE mainframes. IC Role / Device Role / Timing Role: High-fanout, low-skew data switch enabling synchronized capture of multi-channel digital waveforms. Use Value: 12.1 ns max propagation delay ensures deterministic timing alignment across 18-bit wide test bus at 80 Mbps. |
Use Scenario: Isolating control signals between embedded controller and relay/motor driver banks in burn-in testers. IC Role / Device Role / Timing Role: Direction-controlled buffer preventing back-drive conflicts during power sequencing and fault recovery. Use Value: Independent OEAB/OEBA per 9-bit section allows staggered enable timing, reducing inrush current spikes during startup. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74ACT16245DLR | 16-bit (not 18-bit); identical SSOP-48 package; same VCC, drive, and timing specs. | Lacks two data bits; requires redesign if full 18-bit width is mandatory in existing layout. | Select when 16-bit bus width suffices and footprint reduction is prioritized. |
| 74ACT16835DLR | Inverting transceiver; otherwise matches pinout, timing, and electrical specs of 74ACT16863DLR. | Requires logic inversion in upstream/downstream logic or PCB trace rework to maintain signal polarity. | Choose only if system-level inversion is already accommodated or desired for noise cancellation. |
Compared with SN74ACT16245DLR and 74ACT16835DLR, the 74ACT16863DLR uniquely provides 18-bit noninverting bidirectional capability in SSOP-56 - making it irreplaceable where exact bit count, polarity, and pin-compatible upgrade paths are required in deployed Widebus™ systems.
Availability
74ACT16863DLR is available at Aetrix Electronics and suitable for industrial backplane interfaces, legacy system bus extensions, automated test equipment data paths, and programmable controller I/O modules requiring stable component supply across long-lifecycle programs.
Supply support for 74ACT16863DLR 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 company founded in 1930, specializing in analog, embedded processing, and logic solutions for industrial, automotive, and communications markets.
The 74ACT16863DLR belongs to TI's Widebus™ family of high-speed CMOS transceivers, engineered specifically for noise-resilient, high-density bus interfacing in industrial control and test instrumentation systems.
FAQ
What is the operating temperature range for the 74ACT16863DLR?
The 74ACT16863DLR is characterized for operation from –40°C to +85°C, meeting extended commercial and industrial ambient requirements. This range is validated per TI's recommended operating conditions and supported by thermal derating data up to 55°C ambient for full 1.4 W power dissipation. The 74ACT16863DLR does not support the –55°C to +125°C military range - that specification applies only to the 54ACT16863 variant.
Does the 74ACT16863DLR support hot-swap or live-insertion?
The 74ACT16863DLR is not explicitly rated for hot-swap operation. Its absolute maximum ratings allow VI down to –0.5 V and IO clamp current of ±50 mA, but TI documentation does not specify bus-fault protection, power-up sequencing immunity, or ICC surge behavior during insertion. For hot-swap applications, external current-limiting and sequencing circuitry is required. The 74ACT16863DLR should be powered and stabilized before asserting control signals.
How many independent transceiver sections does the 74ACT16863DLR contain?
The 74ACT16863DLR contains two independent 9-bit transceiver sections, each with dedicated OEAB and OEBA inputs. This allows concurrent or separate control of A↔B data flow - for example, enabling A→B on Section 1 while holding Section 2 in high-impedance. The 74ACT16863DLR does not support 18-bit unified control without external logic tying the OE inputs together.
What is the meaning of "DL" in the 74ACT16863DLR part number?
The "DL" suffix in 74ACT16863DLR denotes Texas Instruments' Shrink Small-Outline Package (SSOP) with 56 pins, 300-mil body width, and 0.025-inch center-to-center lead pitch. This package provides double the I/O density of standard SOIC while maintaining compatibility with fine-pitch surface-mount assembly processes. The "R" indicates tape-and-reel packaging - standard for automated placement.
Can the 74ACT16863DLR be used with 3.3-V logic systems?
No - the 74ACT16863DLR is specified only for 4.5–5.5 V operation and is not 3.3-V tolerant. Its inputs require VIH ≥ 2.0 V (TTL-compatible), but VCC must be ≥4.5 V for guaranteed VOH/VOL performance and output drive. Connecting 74ACT16863DLR outputs to 3.3-V inputs risks overvoltage damage unless external level-shifting or clamping is implemented. The 74ACT16863DLR is not a drop-in replacement for 3.3-V transceivers like the AVC or LVC families.
74ACT16863DLR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74ACT
- Package/Case:
- 56-BSSOP (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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
74ACT16863DLR FAQ
1.How can I place an order for 74ACT16863DLR through Aetrix?
Please submit a Request for Quotation (RFQ) for 74ACT16863DLR 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 74ACT16863DLR reliable?
The price and inventory of 74ACT16863DLR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74ACT16863DLR is usually 5 days.
3.What payment methods are accepted for 74ACT16863DLR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74ACT16863DLR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74ACT16863DLR?
74ACT16863DLR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74ACT16863DLR 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 74ACT16863DLR?
For technical support, including 74ACT16863DLR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74ACT16863DLR requirements.
6.How does Aetrix verify that 74ACT16863DLR is sourced from the original manufacturer or authorized distributors?
All 74ACT16863DLR 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 74ACT16863DLR meets industry standards.
7.What is the process for return or replacement of 74ACT16863DLR?
All 74ACT16863DLR units undergo pre-shipment inspection (PSI). If there is an issue with 74ACT16863DLR, 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 74ACT16863DLR part is unused and in its original packaging.
Return procedure for 74ACT16863DLR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
74ACT16863DLR Tags
-
SN74LVC1G17DBVR
Texas Instruments
-
SN74LVC1G07DCKR
Texas Instruments
-
SN74LVC1G17DCKR
Texas Instruments
-
SN74LVC1G07DBVR
Texas Instruments
-
SN74LVC1G125DCKR
Texas Instruments
-
SN74AHCT1G126DBVR
Texas Instruments
-
SN74LVC1G125DBVR
Texas Instruments
-
SN74AHCT1G125DBVR
Texas Instruments
-
SN74LVC2G17DBVR
Texas Instruments
-
SN74LVC2G07DCKR
Texas Instruments
-
SN74LVC1G34DCKR
Texas Instruments
-
SN74LVC2G17DCKR
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
