My Inquiry
My Account
Texas Instruments SN74ALVCH16863DL
- Part No.:
- SN74ALVCH16863DL
- Manufacturer:
- Texas Instruments
- Package:
- 56-BSSOP (0.295", 7.50mm Width)
- Datasheet:
-
SN74ALVCH16863DL.pdf
- Description:
- IC TXRX NON-INVERT 3.6V 56SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,144
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SN74ALVCH16863DL from Texas Instruments is an 18-bit noninverting bus transceiver with 3-state outputs, designed for synchronous bidirectional data transfer between 1.65-V to 3.6-V buses. It supports dual 9-bit or single 18-bit operation, features bus-hold circuitry eliminating external pullup/pulldown resistors, and operates across –40°C to 85°C. Used in memory expansion, backplane interconnect, and FPGA-to-ASIC interface applications.
For engineers reviewing the SN74ALVCH16863DL datasheet, SN74ALVCH16863DL pinout, SN74ALVCH16863DL application, or SN74ALVCH16863DL equivalent, key selection criteria include VCC range (1.65–3.6 V), 3-state output control via OEAB/OEBA, bus-hold input retention, thermal impedance (74°C/W), and DL-package compatibility with 0.5-mm pitch TSSOP layout constraints.
Technical Context
This device implements two independent 9-bit transceiver sections, each with separate output-enable controls (OEAB, OEBA) enabling A→B or B→A directional flow. Its EPIC™ submicron CMOS process delivers low propagation delay (typ. 3.4 ns at 2.7 V) and high noise immunity, while bus-hold inputs maintain valid logic states on floating data lines without external components.
The SN74ALVCH16863DL uses positive-logic enable inputs and supports hot-insertion via power-up/down isolation behavior when OE is pulled to VCC. Absolute maximum ratings include VCC up to 4.6 V, I/O voltage up to VCC + 0.5 V, and ±50 mA continuous output current - ensuring robustness in mixed-voltage system interfacing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 1.65 V to 3.6 V - enables interoperability across 1.8-V, 2.5-V, and 3.3-V logic domains without level shifters. |
| Propagation Delay (tpd) | 3.4 ns max at VCC = 2.7 V - supports >100 MHz bus toggle rates in synchronous systems. |
| Output Drive (IOL/IOH) | ±24 mA at VCC = 3 V - drives 50-pF loads with controlled edge rates and minimal signal degradation. |
| Bus-Hold Current (II(hold)) | ±75 µA at VCC = 3 V - actively retains last-valid logic state on unused inputs, preventing metastability. |
| ESD Protection | 2000 V HBM, 200 V MM - exceeds MIL-STD-883 requirements for handling and board assembly robustness. |
| Operating Temperature | –40°C to 85°C - qualified for industrial-grade embedded control and communications equipment. |
| Thermal Impedance (θJA) | 74°C/W (DL package) - defines maximum power dissipation limit under natural convection cooling. |
Pinout & Package
SN74ALVCH16863DL is housed in a 56-pin plastic shrink small-outline (DL) package - 300-mil body width, 0.5-mm lead pitch, 1.2-mm max height - compatible with standard TSSOP reflow profiles and IPC-7351 land patterns.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OEAB, 2OEAB | Output Enable (A→B) | Active-low control per 9-bit section; enables A-bus data onto B-bus when low. |
| 1OEBA, 2OEBA | Output Enable (B→A) | Active-low control per 9-bit section; enables B-bus data onto A-bus when low. |
| 1A1–1A9, 2A1–2A9 | Data Inputs (A-side) | Bus-hold enabled; retain logic state if left floating - eliminates need for external biasing. |
| 1B1–1B9, 2B1–2B9 | Data Outputs (B-side) | 3-state outputs; high-impedance when corresponding OE is high - enables shared bus arbitration. |
| VCC (Pins 7, 22, 35, 46) | Power Supply | Four dedicated VCC pins reduce IR drop and improve noise margin across wide bus widths. |
| GND (Pins 4, 11, 14, 15, 25, 32, 39, 42, 43) | Ground Return | Nine GND pins provide low-inductance return paths for all 18 data channels and control signals. |
Key Features
| Feature | Design Value |
|---|---|
| Dual 9-bit or unified 18-bit configuration | Flexible partitioning allows use as two independent transceivers or one wide-data-path device - simplifies PCB routing in modular designs. |
| Bus-hold on all data inputs | Eliminates external pullup/pulldown resistors - reduces BOM count, board area, and design validation effort for unused I/Os. |
| Hot-insertion support | OE tied to VCC via pullup ensures high-impedance outputs during power sequencing - prevents bus contention in live-swap systems. |
| Wide supply voltage range | 1.65–3.6 V operation supports direct interface between legacy 3.3-V and modern ultra-low-voltage 1.8-V subsystems. |
| EPIC™ submicron CMOS process | Delivers high speed with low static current (ICC = 40 µA max) and excellent latch-up immunity (>250 mA per JESD17). |
Applications
| Memory Expansion Interface | FPGA-to-Microcontroller Bridge |
|---|---|
Use Scenario: Expanding external SRAM or Flash memory width in microcontroller-based data loggers. IC Role / Device Role / Timing Role: Bidirectional data path translator between narrow MCU data bus and wider memory bus, synchronized by address strobes. Use Value: Enables 16-bit memory access using 8-bit controllers without glue logic; bus-hold prevents read corruption during address setup. |
Use Scenario: Interfacing Xilinx Spartan FPGA I/O banks to ARM Cortex-M7 peripherals operating at different VCC levels. IC Role / Device Role / Timing Role: Voltage-tolerant transceiver managing direction control and timing alignment between asynchronous logic domains. Use Value: Eliminates level-shifter ICs and discrete resistors; 3.6-V absolute max rating protects FPGA I/Os during 3.3-V bus transitions. |
| Industrial Backplane Data Link | Test Equipment Signal Routing |
Use Scenario: Isolating and routing parallel diagnostic data across modular PLC backplanes with mixed-voltage modules. IC Role / Device Role / Timing Role: Hot-swap-capable bus isolator that maintains signal integrity during module insertion/removal. Use Value: Prevents bus contention during live replacement; ESD-hardened I/O withstands repeated connector mating cycles. |
Use Scenario: Configurable signal path switching in automated test equipment (ATE) for DUT interface adaptation. IC Role / Device Role / Timing Role: Reconfigurable 18-bit data channel selector controlled by test sequencer GPIOs. Use Value: Reduces relay count and mechanical wear; fast enable/disable times (<5.8 ns) support high-throughput test pattern cycling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC16835DGGR | 18-bit, but lacks bus-hold; requires external biasing on unused inputs. | Suitable only where all inputs are actively driven; not recommended for sparse or configurable bus topologies. | Choose when cost sensitivity outweighs design simplicity and floating-input risk. |
| SN74AVC16835DGGR | Supports 1.2–3.6 V VCC, lower drive (±12 mA), no bus-hold, higher speed (tpd = 2.4 ns). | Better for ultra-low-voltage 1.2-V/1.5-V systems; insufficient drive for heavy 50-pF loads at 3.3 V. | Select for next-gen low-power SoC interfaces where bus-hold is managed elsewhere. |
Compared with SN74LVC16835DGGR and SN74AVC16835DGGR, the SN74ALVCH16863DL uniquely combines bus-hold functionality, 24-mA drive at 3.3 V, and industrial temperature range - making it optimal for ruggedized, minimally-biased bus architectures requiring zero external passive components on data lines.
Availability
SN74ALVCH16863DL is available at Aetrix Electronics and suitable for memory expansion, FPGA bridging, industrial backplane interconnect, and ATE signal routing requiring stable component supply across extended temperature and mixed-voltage environments.
Supply support for SN74ALVCH16863DL 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 connectivity technologies, with over 90 years of innovation in industrial, automotive, and communications markets.
The SN74ALVCH16863DL belongs to TI's Widebus™ family of high-speed, low-voltage bus interface devices - engineered specifically for reliable, low-component-count data path expansion in space-constrained industrial and computing systems.
FAQ
What is the recommended power-up sequence for SN74ALVCH16863DL to avoid bus contention?
TI specifies tying OEAB and OEBA to VCC through a pullup resistor (minimum value determined by driver sink capability) to ensure outputs remain in high-impedance state during power ramp. This prevents unintended data leakage or contention on shared buses before system initialization completes. The SN74ALVCH16863DL's internal power-on reset behavior is not guaranteed - external OE control is mandatory for safe sequencing.
Does SN74ALVCH16863DL support hot-swap operation in live backplane systems?
Yes - the SN74ALVCH16863DL supports hot-swap when OE is held high via pullup during insertion. Its 3-state outputs enter high-impedance mode immediately upon VCC application, and bus-hold circuitry prevents floating inputs from drifting into undefined states. ESD ratings (2000 V HBM) further enhance survivability during repeated connector mating cycles in field-replaceable modules.
Can SN74ALVCH16863DL be used as two independent 9-bit transceivers?
Yes - the SN74ALVCH16863DL contains two functionally identical 9-bit sections (1A/1B and 2A/2B), each with dedicated OEAB and OEBA inputs. This allows simultaneous A→B and B→A transfers on separate data groups, or independent direction control for isolated subsystems - verified in the device's FUNCTION TABLE and logic diagram.
What is the maximum capacitive load SN74ALVCH16863DL can drive while maintaining specified timing?
The SN74ALVCH16863DL is characterized for CL = 50 pF in switching tests (tpd, ten, tdis), with typical propagation delay of 3.4 ns at VCC = 2.7 V. Driving loads beyond 50 pF increases delay nonlinearly and may violate setup/hold margins; TI recommends limiting trace + stub + receiver capacitance to ≤50 pF per output for guaranteed timing compliance per SCES060B.
How does bus-hold functionality affect power consumption on unused SN74ALVCH16863DL inputs?
Bus-hold circuitry draws ±75 µA (max) per floating input at VCC = 3 V, as specified in II(hold) parameter. While this adds minor quiescent current, it eliminates the need for external 10-kΩ pullup/pulldown resistors - which would draw ~330 µA each at 3.3 V. Thus, net system power is reduced despite active bus-hold current, especially in sparsely populated bus configurations.
SN74ALVCH16863DL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74ALVCH
- Package/Case:
- 56-BSSOP (0.295", 7.50mm Width)
- Packaging:
- Tube
- 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:
- 1.65V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 56-SSOP
SN74ALVCH16863DL FAQ
1.How can I place an order for SN74ALVCH16863DL through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74ALVCH16863DL 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 SN74ALVCH16863DL reliable?
The price and inventory of SN74ALVCH16863DL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74ALVCH16863DL is usually 5 days.
3.What payment methods are accepted for SN74ALVCH16863DL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74ALVCH16863DL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74ALVCH16863DL?
SN74ALVCH16863DL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74ALVCH16863DL 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 SN74ALVCH16863DL?
For technical support, including SN74ALVCH16863DL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74ALVCH16863DL requirements.
6.How does Aetrix verify that SN74ALVCH16863DL is sourced from the original manufacturer or authorized distributors?
All SN74ALVCH16863DL 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 SN74ALVCH16863DL meets industry standards.
7.What is the process for return or replacement of SN74ALVCH16863DL?
All SN74ALVCH16863DL units undergo pre-shipment inspection (PSI). If there is an issue with SN74ALVCH16863DL, 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 SN74ALVCH16863DL part is unused and in its original packaging.
Return procedure for SN74ALVCH16863DL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SN74ALVCH16863DL 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…
