My Inquiry
My Account
Texas Instruments 74ACT16863DLRG4
- Part No.:
- 74ACT16863DLRG4
- Manufacturer:
- Texas Instruments
- Package:
- 56-BSSOP (0.295", 7.50mm Width)
- Datasheet:
-
74ACT16863DLRG4.pdf
- Description:
- IC TXRX NON-INVERT 5.5V 56SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,203
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
74ACT16863DLRG4 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 –40°C to 85°C, delivers ±24 mA output drive, and features flow-through pinout for optimized PCB layout.
For engineers reviewing the 74ACT16863DLRG4 datasheet, 74ACT16864DLRG4 pinout, 74ACT16863DLRG4 application, or 74ACT16863DLRG4 equivalent, this device is selected for TTL-voltage-compatible bus interfacing where low propagation delay (tPLH/tPHL ≤ 12.1 ns), distributed power/ground pins, and dual 9-bit or single 18-bit configuration flexibility are critical.
Technical Context
The 74ACT16863DLRG4 implements two independent 9-bit transceiver sections, each controlled by dedicated OEAB/OEBA inputs enabling direction-selectable data flow (A→B or B→A) or high-impedance isolation. Its EPIC™ 1-µm CMOS process ensures 500-mA latch-up immunity at 125°C and TTL-level input compatibility without external level shifters.
It uses a shrink small-outline package (DL, 56-pin) with 25-mil center-to-center pin spacing and distributed VCC/GND pins to minimize simultaneous switching noise. The flow-through architecture places inputs and outputs on opposite sides of the package, eliminating layer jumps and reducing trace crosstalk in dense layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V - compatible with standard 5-V TTL and CMOS logic rails without regulation overhead. |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade embedded and computing applications. |
| Output Drive | ±24 mA - sufficient to directly drive terminated bus lines without external buffers. |
| Propagation Delay | tPLH/tPHL ≤ 12.1 ns @ 5 V - enables reliable operation in sub-100-MHz synchronous bus environments. |
| 3-State Enable Time | tPZH/tPLZ ≤ 11.6 ns - fast output enable/disable supports dynamic bus arbitration and hot-swap readiness. |
| Input Capacitance | Ci = 4.5 pF - low loading preserves signal integrity on fan-out-critical control lines like OEAB/OEBA. |
| Power Dissipation Cap. | Cpd = 62 pF per transceiver - enables accurate dynamic power estimation at 1 MHz toggle rate. |
Pinout & Package
74ACT16863DLRG4 is housed in a 56-pin Shrink Small-Outline Package (SSOP-DL), 300-mil body width, 25-mil pin pitch, with exposed thermal pad not present. Pin numbering follows TI's standard DL top-view convention.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 28, 29, 56 | OEAB / OEBA (Section 1 & 2) | Active-low output-enable controls direction: OEAB low enables A→B; OEBA low enables B→A. |
| 2–10, 41–49 | A-port I/O (1A1–1A9, 2A1–2A9) | Noninverting bidirectional data terminals for first and second 9-bit A-side bus segments. |
| 11–19, 50–55 | B-port I/O (1B1–1B9, 2B1–2B9) | Noninverting bidirectional data terminals for first and second 9-bit B-side bus segments. |
| 13, 14, 15, 22, 23, 24, 31, 32, 33, 39, 40, 47 | GND | Distributed ground pins reduce ground bounce and improve noise margin during high-speed switching. |
| 7, 21, 36, 45 | VCC | Distributed power pins decouple supply locally, minimizing voltage droop across the die during output transitions. |
Key Features
| Feature | Design Value |
|---|---|
| TTL-Voltage Compatible Inputs | VIH = 2 V min, VIL = 0.8 V max - interfaces directly with legacy 5-V TTL logic without level-shifting circuitry. |
| Flow-Through Architecture | Inputs on one side, outputs on opposite side - eliminates layer stacking and vias in PCB routing, reducing skew and EMI. |
| Dual 9-Bit or Single 18-Bit Mode | Independent OEAB/OEBA per section - supports flexible bus segmentation or full-width data path expansion. |
| 500-mA Latch-Up Immunity | Tested per JEDEC JESD78 at 125°C - ensures robustness against transient-induced CMOS latch-up in harsh environments. |
| Green (RoHS & no Sb/Br) Packaging | CU NIPDAU finish, MSL Level-1 - supports lead-free reflow assembly without brominated flame retardants. |
Applications
| Industrial Backplane Interfacing | Legacy System Bus Extension |
|---|---|
|
Use Scenario: Connecting isolated processor and peripheral modules across a 18-bit parallel backplane in programmable logic controllers. IC Role / Device Role / Timing Role: Bidirectional bus transceiver managing data flow between CPU and I/O expansion cards under software-controlled direction. Use Value: Flow-through pinout reduces trace length mismatch; ±24 mA drive sustains signal integrity over 15-cm routed bus lengths at 25 MHz. |
Use Scenario: Extending ISA or VMEbus data paths between aging host controllers and newly designed interface cards. IC Role / Device Role / Timing Role: Voltage- and timing-transparent bridge translating between TTL-compatible subsystems with different timing margins. Use Value: TTL-input compatibility eliminates level-shifters; tPLH ≤ 12.1 ns meets ISA bus setup/hold timing budgets without added delay. |
| High-Density Memory Subsystem Buffering | Configurable Data Path Switching |
|
Use Scenario: Isolating and buffering address/data buses between FPGA-based memory controllers and SRAM banks in test equipment. IC Role / Device Role / Timing Role: 3-state transceiver enabling time-multiplexed access to shared memory resources via OE-controlled bus arbitration. Use Value: Fast tPZH ≤ 11.6 ns allows rapid bus release; distributed VCC/GND pins suppress noise during concurrent SRAM read/write bursts. |
Use Scenario: Implementing reconfigurable datapaths in modular instrumentation where A/B bus roles change per test mode. IC Role / Device Role / Timing Role: Dual-section transceiver used as two independent 9-bit switches, each directed by separate OE signals. Use Value: Independent OEAB/OEBA per section permits asymmetric data routing (e.g., A1–A9 → B1–B9 while A10–A18 held high-Z). |
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); dual-OE but no per-section OEBA/OEAB separation; identical DL package and 5-V specs. | Lacks independent 9-bit section control; requires external logic for asymmetric enable if 18-bit granularity is needed. | Select when 16-bit width suffices and cost-per-bit optimization is prioritized over directional flexibility. |
| 74ACT16835DLR | Inverting transceiver (vs. noninverting); same pin count, DL package, and electrical specs; shares EPIC process. | Requires logic inversion in system design; unsuitable where signal polarity must be preserved end-to-end. | Select only when inverting behavior aligns with existing bus protocol or simplifies downstream logic. |
Compared with SN74ACT16245DLR and 74ACT16835DLR, the 74ACT16863DLRG4 uniquely provides 18-bit noninverting operation with per-section OE control-enabling true 9-bit sub-bus isolation without external gates or polarity correction.
Availability
74ACT16863DLRG4 is available at Aetrix Electronics and suitable for industrial backplanes, legacy bus extensions, high-density memory subsystems, and configurable data-path switching requiring stable component supply and long-term obsolescence management.
Supply support for 74ACT16863DLRG4 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 headquartered in Dallas, Texas, delivering analog and embedded processing solutions across industrial, automotive, and communications markets.
The 74ACT16863DLRG4 belongs to TI's Widebus™ family of high-speed CMOS transceivers, engineered specifically for noise-resilient, high-pin-count parallel bus interfacing in industrial control and computing infrastructure.
FAQ
What is the operating temperature range for the 74ACT16863DLRG4?
The 74ACT16863DLRG4 is characterized for operation from –40°C to +85°C, meeting industrial-grade environmental requirements. This range is verified per TI's SCAS162B datasheet and applies to all electrical specifications unless otherwise noted. The 74ACT16863DLRG4 does not support extended military temperature ranges - that capability is reserved for the 54ACT16863 variant.
Does the 74ACT16863DLRG4 support true bidirectional data flow without external logic?
Yes - the 74ACT16863DLRG4 supports fully bidirectional data transfer via dedicated OEAB and OEBA inputs. When OEAB is low and OEBA is high, data flows from A to B; when OEBA is low and OEAB is high, data flows from B to A; both high yields high-impedance isolation. No external direction-control logic is required, making the 74ACT16863DLRG4 ideal for dynamic bus arbitration schemes.
Is the 74ACT16863DLRG4 pin-compatible with other Widebus™ transceivers in DL packages?
No - the 74ACT16863DLRG4 has a unique 56-pin DL pinout optimized for its dual 9-bit architecture and flow-through layout. While it shares the DL package footprint with devices like SN74ACT16245DLR, pin functions (e.g., OE assignment, I/O grouping, VCC/GND distribution) differ significantly. Direct PCB substitution is not supported; layout redesign is required when migrating to or from the 74ACT16863DLRG4.
What is the maximum output current rating for the 74ACT16863DLRG4?
The 74ACT16863DLRG4 is rated for ±24 mA DC output current per pin under recommended operating conditions (VCC = 4.5–5.5 V, TA = –40°C to +85°C). This value is specified in the "Recommended Operating Conditions" table of the SCAS162B datasheet and reflects sustained drive capability into standard bus loads. Peak currents up to ±50 mA are permitted for short durations per absolute maximum ratings, but not for continuous operation.
How does the flow-through architecture of the 74ACT16863DLRG4 improve PCB layout?
The flow-through architecture places all A-port pins on one side and B-port pins on the opposite side of the 56-pin DL package, with OE and power/ground distributed across the perimeter. This allows straight-line, layer-minimized routing - eliminating vias and reducing trace length mismatch between parallel bus lines. As a result, the 74ACT16863DLRG4 improves signal skew control, lowers crosstalk, and simplifies high-speed layout verification compared to traditional zig-zag pinouts.
74ACT16863DLRG4 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
74ACT16863DLRG4 FAQ
1.How can I place an order for 74ACT16863DLRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74ACT16863DLRG4 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 74ACT16863DLRG4 reliable?
The price and inventory of 74ACT16863DLRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74ACT16863DLRG4 is usually 5 days.
3.What payment methods are accepted for 74ACT16863DLRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74ACT16863DLRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74ACT16863DLRG4?
74ACT16863DLRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74ACT16863DLRG4 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 74ACT16863DLRG4?
For technical support, including 74ACT16863DLRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74ACT16863DLRG4 requirements.
6.How does Aetrix verify that 74ACT16863DLRG4 is sourced from the original manufacturer or authorized distributors?
All 74ACT16863DLRG4 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 74ACT16863DLRG4 meets industry standards.
7.What is the process for return or replacement of 74ACT16863DLRG4?
All 74ACT16863DLRG4 units undergo pre-shipment inspection (PSI). If there is an issue with 74ACT16863DLRG4, 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 74ACT16863DLRG4 part is unused and in its original packaging.
Return procedure for 74ACT16863DLRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
74ACT16863DLRG4 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…
