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Texas Instruments SN74LVC863PWLE
- Part No.:
- SN74LVC863PWLE
- Manufacturer:
- Texas Instruments
- Package:
- -
- Datasheet:
-
SN74LVC863PWLE.pdf
- Description:
- BUS TRANSCEIVER
- Quantity:
- Payment:
- Shipping:
Inventory:10,000
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Product details
Overview
SN74LVC863PWLE from Texas Instruments is a 9-bit bus transceiver with 3-state outputs, designed for bidirectional asynchronous data transfer between A and B buses in mixed-voltage systems. It operates from 1.65 V to 3.6 V, accepts 5.5-V inputs, delivers 6.1-ns max propagation delay at 3.3 V, and supports partial-power-down via Ioff. It is used in voltage-level translation between 3.3-V and 5-V logic domains in industrial control backplanes.
For engineers reviewing the SN74LVC863PWLE datasheet, SN74LVC863PWLE pinout, SN74LVC863PWLE application, or SN74LVC863PWLE equivalent, key selection criteria include bidirectional 3-state control timing (ten/tdis), mixed-mode input tolerance, Ioff-enabled power-down isolation, and TSSOP-24 package compatibility with high-density PCB layouts.
Technical Context
The SN74LVC863PWLE implements dual independent 3-state enable controls (OEABx/OEBAx) per direction, allowing flexible latch-and-transfer or real-time bidirectional flow. Its LVC logic family ensures TTL-compatible thresholds across 1.65–3.6-V VCC while maintaining 5.5-V tolerant inputs.
It features Ioff circuitry that disables outputs during power-down to prevent current backflow, and its output-ground-bounce (VOLP < 0.8 V) and VOH-undershoot (VOHV > 2 V) are characterized at 3.3 V/25°C - critical for signal integrity in fast-switching bus interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 1.65 V to 3.6 V - enables operation across low-voltage logic rails including 1.8-V, 2.5-V, and 3.3-V systems. |
| Input Voltage Tolerance | Up to 5.5 V - allows direct interfacing with legacy 5-V peripherals without external level shifters. |
| Max tpd | 6.1 ns at VCC = 3.3 V - supports high-speed data transfer up to ~160 MHz bus rates in synchronous designs. |
| Ioff Current | ±10 µA at VI/VO = 5.5 V - ensures safe isolation during partial power-down, preventing damage from back-current. |
| Output Drive | ±24 mA at VCC = 3 V - drives standard 50-Ω transmission lines or multiple CMOS loads without buffering. |
| ESD Rating | 2000-V HBM, 200-V MM, 1000-V CDM - meets industrial-grade robustness requirements for board-level handling and operation. |
| Operating Temperature | –40°C to +85°C - qualified for extended industrial ambient conditions without derating. |
Pinout & Package
TSSOP-24 (PW) package: 4.4 mm × 5.0 mm body, 0.65 mm pitch, 1.2 mm max height, lead-free (RoHS & no Sb/Br), moisture sensitivity level 1 (260°C reflow unlimited).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 11, 13, 14, 2, 23 | A1–A9, B1–B9 I/O | 9-bit bidirectional data ports - A-side and B-side pins support simultaneous or directional transfer based on OE states. |
| OEAB1, OEAB2 (pins 3, 4) | A→B Output Enable (active-low) | Both must be low to enable A-to-B transmission; high disables A-side drivers into high-Z. |
| OEBA1, OEBA2 (pins 22, 21) | B→A Output Enable (active-low) | Both must be low to enable B-to-A transmission; high disables B-side drivers into high-Z. |
| 12 | GND | Ground reference for all I/O and internal logic - requires low-inductance connection to minimize ground bounce. |
| 24 | VCC | Core supply input - bypassing with 0.1-µF ceramic capacitor near pin essential for noise suppression. |
Key Features
| Feature | Design Value |
|---|---|
| Mixed-mode signal operation | 5-V-tolerant inputs with 3.3-V VCC - eliminates external translators in 3.3/5-V hybrid backplanes. |
| Partial-power-down support | Ioff limits leakage to ±10 µA when powered down - enables hot-swap and dynamic power gating in modular systems. |
| Controlled output switching | VOLP < 0.8 V and VOHV > 2 V at 3.3 V - reduces switching noise coupling into adjacent traces and power rails. |
| High-speed 3-state timing | ten = 7.2 ns, tdis = 6.3 ns at 3.3 V - ensures clean bus release before new driver activation, preventing contention. |
| Latch-up immunity | >250 mA per JESD17 - withstands transient overvoltage events without destructive latch-up in noisy industrial environments. |
Applications
| Industrial Backplane Interface | Legacy Peripheral Bridge |
|---|---|
|
Use Scenario: Interfacing a modern 3.3-V FPGA-based controller with older 5-V ISA-style I/O modules in programmable logic controllers. IC Role / Device Role / Timing Role: Bidirectional voltage-translating bus transceiver enabling synchronous read/write cycles between mismatched logic families. Use Value: Eliminates discrete resistor-divider or dedicated level-shifter ICs, reducing BOM count and layout area while maintaining 6.1-ns timing integrity. |
Use Scenario: Connecting a 3.3-V microcontroller to 5-V RS-232 line drivers and EEPROMs in embedded test equipment. IC Role / Device Role / Timing Role: Direction-controlled data path isolator with independent OEAB/OEBA pairs for precise timing of write vs. read strobes. Use Value: Enables single-chip translation across nine data lines with guaranteed 5.5-V input tolerance and sub-7-ns enable/disable transitions. |
| Modular Sensor Hub | Configurable I/O Expansion |
|
Use Scenario: Aggregating sensor data from mixed-voltage analog front-ends (5-V ADCs, 3.3-V digital sensors) onto a central 3.3-V processing bus. IC Role / Device Role / Timing Role: Asynchronous bus coupler with high-impedance isolation during power sequencing to prevent bus contention at startup. Use Value: Ensures glitch-free initialization via OE tie-high with pullup, meeting IEC 61000-4-2 ESD immunity requirements without added protection circuitry. |
Use Scenario: Adding configurable parallel I/O to an ARM-based HMI platform where expansion slots accept both 3.3-V and 5-V peripheral cards. IC Role / Device Role / Timing Role: Reconfigurable 9-bit data channel with independent direction control per half-bus, supporting both memory-mapped and I/O-mapped access. Use Value: Provides pin-compatible scalability - one SN74LVC863PWLE replaces two 4-bit transceivers, simplifying routing and reducing layer count. |
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 |
|---|---|---|---|
| SN74LVC863APWR | Same silicon, identical electrical specs, TSSOP-24 reel packaging (2000 pcs), active status vs. PWLE's obsolete status. | No functional difference - suitable for new designs requiring volume procurement and long-term supply assurance. | Select SN74LVC863APWR for production ramp; SN74LVC863PWLE is obsolete and not recommended for new designs. |
| SN74LVC863ADBR | Same functionality, SSOP-24 (DB) package - 5.3-mm width vs. PW's 4.4-mm width; slightly higher θJA (63°C/W vs. 88°C/W). | Requires PCB footprint change; better thermal performance but larger board area; compatible with legacy SSOP tooling. | Choose SN74LVC863ADBR only if SSOP-24 is mandated by existing assembly infrastructure or thermal margin constraints exceed TSSOP capability. |
Compared with SN74LVC863PWLE, SN74LVC863APWR offers identical performance with assured supply continuity, while SN74LVC863ADBR trades compactness for thermal headroom and legacy compatibility - neither is pin-compatible without footprint redesign.
Availability
SN74LVC863PWLE is available at Aetrix Electronics and suitable for industrial backplane interfaces, legacy peripheral bridging, and modular sensor hubs requiring stable component supply despite its obsolete status - limited quantities sourced from verified legacy inventory with full traceability.
Supply support for SN74LVC863PWLE 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, precision, and energy efficiency across industrial, automotive, and communications markets.
The SN74LVC863PWLE belongs to TI's LVC logic family - engineered for low-voltage, high-speed bidirectional bus interfacing in mixed-signal systems where voltage translation, power-aware operation, and noise resilience are critical.
FAQ
What is the operating voltage range for SN74LVC863PWLE?
The SN74LVC863PWLE operates from 1.65 V to 3.6 V on VCC. Its inputs tolerate up to 5.5 V regardless of VCC level, enabling direct interfacing with 5-V devices while powered from 3.3-V or lower rails. This range is fully specified across –40°C to +85°C ambient temperature.
Does SN74LVC863PWLE support partial power-down?
Yes, SN74LVC863PWLE includes Ioff circuitry that limits off-state current to ±10 µA when VCC = 0 V and inputs/outputs are biased to 5.5 V. This prevents damaging back-current flow during hot-swap or staggered power sequencing - a key requirement for modular industrial systems.
What is the maximum propagation delay of SN74LVC863PWLE at 3.3 V?
The maximum propagation delay (tpd) of SN74LVC863PWLE is 6.1 ns at VCC = 3.3 V and TA = 25°C. This value applies to both A→B and B→A directions under standard load conditions (CL = 50 pF, RL = 500 Ω), supporting reliable operation in sub-10-ns timing-critical bus architectures.
How many enable inputs does SN74LVC863PWLE have, and what do they control?
SN74LVC863PWLE has four active-low enable inputs: OEAB1/OEAB2 control A→B direction, and OEBA1/OEBA2 control B→A direction. Both enables in a pair must be low to activate the corresponding data path; any high enable forces its side into high-impedance state - enabling precise bus arbitration.
Is SN74LVC863PWLE RoHS compliant?
Yes, SN74LVC863PWLE is RoHS compliant and classified as "Green (RoHS & no Sb/Br)" per TI's packaging documentation. It uses lead-free CU NIPDAU terminations and meets JEDEC MSL Level-1 (260°C, unlimited reflow), though it is marked obsolete and no longer in active production.
SN74LVC863PWLE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVC
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Logic Type:
- -
- Number of Elements:
- -
- Number of Bits per Element:
- -
- Input Type:
- -
- Output Type:
- -
- Current - Output High, Low:
- -
- Voltage - Supply:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
SN74LVC863PWLE FAQ
1.How can I place an order for SN74LVC863PWLE through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVC863PWLE 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 SN74LVC863PWLE reliable?
The price and inventory of SN74LVC863PWLE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVC863PWLE is usually 5 days.
3.What payment methods are accepted for SN74LVC863PWLE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LVC863PWLE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74LVC863PWLE?
SN74LVC863PWLE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LVC863PWLE 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 SN74LVC863PWLE?
For technical support, including SN74LVC863PWLE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVC863PWLE requirements.
6.How does Aetrix verify that SN74LVC863PWLE is sourced from the original manufacturer or authorized distributors?
All SN74LVC863PWLE 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 SN74LVC863PWLE meets industry standards.
7.What is the process for return or replacement of SN74LVC863PWLE?
All SN74LVC863PWLE units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVC863PWLE, 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 SN74LVC863PWLE part is unused and in its original packaging.
Return procedure for SN74LVC863PWLE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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