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Texas Instruments CLVTH16543MDLREP
- Part No.:
- CLVTH16543MDLREP
- Manufacturer:
- Texas Instruments
- Package:
- 56-BSSOP (0.295", 7.50mm Width)
- Datasheet:
-
CLVTH16543MDLREP.pdf
- Description:
- IC TXRX NON-INVERT 3.6V 56SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,274
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Product details
Overview
CLVTH16543MDLREP from Texas Instruments is a radiation-hardened, high-reliability 16-bit registered transceiver operating at 3.3 V VCC with TTL-compatible 5-V input/output tolerance, bus-hold on all data inputs, and independent A↔B bidirectional latching and 3-state control - used in space-grade avionics data buses and military FPGA I/O bridging.
For engineers reviewing the CLVTH16543MDLREP datasheet, CLVTH16543MDLREP pinout, CLVTH16543MDLREP application, or CLVTH16543MDLREP equivalent, key selection criteria include its –55°C to 125°C extended temperature rating, SSOP-56 (DL) package with 73.5°C/W θJA, Ioff-enabled hot-insertion support, and dual 8-bit register architecture with separate CE/LE/OE per direction.
Technical Context
The CLVTH16543MDLREP implements two independent 8-bit ABT (Advanced BiCMOS Technology) registered transceivers, each with dedicated latch-enable (LEAB/LEBA), output-enable (OEAB/OEBA), and chip-enable (CEAB/CEBA) inputs enabling precise timing control of bidirectional data flow. Its bus-hold circuitry eliminates external pullup/pulldown resistors on all 32 data lines.
It supports mixed-mode operation: 5-V-tolerant inputs and outputs while powered from 2.7–3.6 V VCC, with power-up 3-state and Ioff protection ensuring safe hot insertion into live backplanes. The flow-through pinout minimizes PCB trace skew and routing congestion in high-speed parallel bus designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.7 V to 3.6 V - enables stable operation under unregulated battery supply down to 2.7 V |
| IOL / IOH | 64 mA / –32 mA - drives standard TTL loads without external buffers |
| Bus-Hold Current | ±75 µA at VI = 0.8 V or 2 V - maintains valid logic state on floating data lines |
| tPLH / tPHL | 1.2 ns to 6.5 ns (VCC = 3.3 V) - supports >100-MHz data transfer in registered mode |
| Operating Temp | –55°C to +125°C - qualified for space and defense-grade environmental stress profiles |
| θJA | 73.5°C/W (DL package) - defines thermal derating for continuous 16-bit bus switching |
| Ioff | ±550 µA max (M temp) - blocks damaging backflow current during hot-swap events |
Pinout & Package
CLVTH16543MDLREP is housed in a 56-pin SSOP (Shrink Small Outline Package) with 0.5-mm pitch, 13.9 mm × 6.1 mm body size, and 1.2-mm max height per JEDEC MO-153. Pin 1 located at top-left corner (Q1 quadrant), with GND and VCC distributed across multiple pins to suppress high-speed switching noise.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OEAB, 2OEAB, 1OEBA, 2OEBA | Output Enable (active-low) | Individually disables 8-bit B or A outputs to high-impedance - enables time-multiplexed bus sharing |
| 1LEAB, 2LEAB, 1LEBA, 2LEBA | Latch Enable (active-low) | Controls transparent vs. storage mode for corresponding 8-bit register - critical for setup/hold timing alignment |
| 1CEAB, 2CEAB, 1CEBA, 2CEBA | Chip Enable (active-low) | Gates data capture from A or B ports - required low before LE transition to load new data |
| 1A1–1A8, 2A1–2A8 | Port A Data Inputs/Outputs | First 8-bit bidirectional data interface - connects to FPGA or ASIC data bus with bus-hold active |
| 1B1–1B8, 2B1–2B8 | Port B Data Inputs/Outputs | Second 8-bit bidirectional data interface - electrically isolated from Port A for dual-bus isolation |
| VCC (Pins 7, 20, 33, 46) | Power Supply | Distributed VCC pins reduce simultaneous switching noise and improve PDN impedance |
| GND (Pins 4, 11, 18, 25, 32, 39, 44, 51) | Ground Reference | Eight GND pins provide low-inductance return paths for 16-bit parallel switching currents |
Key Features
| Feature | Design Value |
|---|---|
| 3.3-V ABT Technology | Enables low static power (0.19 mA typical ICC when outputs disabled) while maintaining TTL drive strength |
| Mixed-Mode I/O | 5-V-tolerant inputs/outputs allow direct interfacing with legacy 5-V logic without level shifters |
| Hot-Insertion Support | Ioff and power-up 3-state prevent backdrive damage and bus contention during live board insertion |
| Bus-Hold Circuitry | Eliminates need for 32 external pullup/pulldown resistors - reduces BOM count and layout area |
| Flow-Through Architecture | Input and output pins positioned on opposite sides - simplifies layer stacking and minimizes trace crossovers |
Applications
| Avionics Data Bus Interface | FPGA I/O Expansion Bridge |
|---|---|
Use Scenario: Bidirectional data transfer between radiation-tolerant microcontroller and legacy 5-V sensor subsystem in satellite payload. IC Role / Device Role / Timing Role: Registered transceiver providing synchronized, glitch-free handshaking with independent latch and output control per 8-bit lane. Use Value: Enables deterministic timing via separate CE/LE/OE signals and eliminates external bus-termination components using integrated bus-hold. | Use Scenario: Extending I/O count of space-qualified FPGA by connecting additional memory and peripheral interfaces. IC Role / Device Role / Timing Role: Level-shifting and registered buffering for 16-bit parallel address/data bus between FPGA and SRAM/ASIC peripherals. Use Value: Supports 2.7–3.6 V VCC operation with 5-V I/O tolerance - avoids discrete level translators and reduces signal integrity risk. |
| Military Vehicle Control Backplane | Secure Crypto Module Interconnect |
Use Scenario: Hot-pluggable module interconnection in armored vehicle C4I system requiring field-replaceable computing nodes. IC Role / Device Role / Timing Role: Isolated bidirectional data path with Ioff and power-up 3-state preventing backfeed during insertion/removal. Use Value: Guarantees zero-current backflow (Ioff < ±550 µA) and automatic high-Z on power ramp - meets MIL-STD-1553B bus safety requirements. | Use Scenario: Secure communication between tamper-evident crypto processor and trusted execution environment in classified comms hardware. IC Role / Device Role / Timing Role: Registered, noise-immune data conduit with distributed VCC/GND and low ground bounce (VOLP < 0.8 V). Use Value: Reduces radiated emissions and timing jitter via minimized simultaneous switching noise - critical for TEMPEST-compliant designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit registered transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVTH16543IDGGREP | TSSOP-56 package; rated for –40°C to 85°C; θJA = 81°C/W | Suitable for commercial/industrial systems where extended temperature range not required | Select when lower cost, higher volume, and standard industrial temp suffice |
| V62/04715-02YE | Same DL package and –55°C to 125°C rating; identical electrical specs; different part marking (LH16543MEP) | Qualified under V62 military screening with enhanced DMS and pedigree reporting | Select when full MIL-PRF-38535 Class V or QML-Q compliance is mandated |
Compared with CLVTH16543MDLREP, SN74LVTH16543IDGGREP trades extended temperature and lower thermal resistance for cost and volume availability, while V62/04715-02YE provides identical performance with formal military qualification documentation and traceability - making CLVTH16543MDLREP the optimal choice for space-grade programs requiring EP-level reliability without full V62 overhead.
Availability
CLVTH16543MDLREP is available at Aetrix Electronics and suitable for avionics data buses, military vehicle backplanes, secure crypto interconnects, and space-grade FPGA I/O expansion requiring stable component supply across extended temperature and radiation-aware environments.
Supply support for CLVTH16543MDLREP 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 high-reliability aerospace and defense ICs.
The SN74LVTH16543-EP product line delivers radiation-tolerant, extended-temperature registered transceivers for mission-critical data path bridging in harsh-environment electronics.
FAQ
What is the maximum operating voltage for CLVTH16543MDLREP?
The absolute maximum VCC for CLVTH16543MDLREP is 4.6 V, but the recommended operating range is strictly 2.7 V to 3.6 V per TI SCBS785B. Operation outside this range risks parametric shift or latch-up. The device tolerates 5-V input signals regardless of VCC level, enabling mixed-voltage system integration without level shifters.
Does CLVTH16543MDLREP support hot insertion?
Yes, CLVTH16543MDLREP fully supports hot insertion via dual protection mechanisms: Ioff circuitry disables outputs when VCC = 0 V to prevent backflow current, and power-up 3-state forces all outputs into high-impedance during VCC ramp (0–1.5 V). These features are verified per TI's hot-insertion application guidelines and meet MIL-STD-1553B safety thresholds.
How many independent data paths does CLVTH16543MDLREP provide?
CLVTH16543MDLREP provides two fully independent 8-bit registered transceiver paths (A↔B and C↔D), each with dedicated CE, LE, and OE controls. This allows concurrent bidirectional data transfers - for example, streaming sensor data from Port A to Port B while simultaneously loading configuration from Port C to Port D - without internal arbitration or timing conflict.
What is the purpose of bus-hold circuitry in CLVTH16543MDLREP?
The bus-hold circuitry in CLVTH16543MDLREP actively maintains the last-valid logic state on all 32 data inputs (A1–A8, B1–B8, etc.) when those lines float, drawing only ±75 µA. This eliminates the need for 32 external pullup or pulldown resistors, reducing BOM cost, PCB area, and potential signal integrity issues caused by resistor parasitics in high-speed parallel bus layouts.
Is CLVTH16543MDLREP pin-compatible with other LVTH16543 variants?
Yes, CLVTH16543MDLREP shares identical pinout and functionality with SN74LVTH16543IDGGREP and V62/04715-02YE - all use the same 56-pin logic assignment and register architecture. Differences are limited to package type (DL vs. DGG), temperature grade, qualification level, and thermal characteristics; no PCB redesign is needed when substituting within the same package family.
CLVTH16543MDLREP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVTH
- Package/Case:
- 56-BSSOP (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Logic Type:
- Transceiver, Non-Inverting
- Number of Elements:
- 2
- Number of Bits per Element:
- 8
- Input Type:
- -
- Output Type:
- 3-State
- Current - Output High, Low:
- 32mA, 64mA
- Voltage - Supply:
- 2.7V ~ 3.6V
- Operating Temperature:
- -55°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 56-SSOP
CLVTH16543MDLREP FAQ
1.How can I place an order for CLVTH16543MDLREP through Aetrix?
Please submit a Request for Quotation (RFQ) for CLVTH16543MDLREP 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 CLVTH16543MDLREP reliable?
The price and inventory of CLVTH16543MDLREP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CLVTH16543MDLREP is usually 5 days.
3.What payment methods are accepted for CLVTH16543MDLREP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CLVTH16543MDLREP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CLVTH16543MDLREP?
CLVTH16543MDLREP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CLVTH16543MDLREP 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 CLVTH16543MDLREP?
For technical support, including CLVTH16543MDLREP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CLVTH16543MDLREP requirements.
6.How does Aetrix verify that CLVTH16543MDLREP is sourced from the original manufacturer or authorized distributors?
All CLVTH16543MDLREP 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 CLVTH16543MDLREP meets industry standards.
7.What is the process for return or replacement of CLVTH16543MDLREP?
All CLVTH16543MDLREP units undergo pre-shipment inspection (PSI). If there is an issue with CLVTH16543MDLREP, 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 CLVTH16543MDLREP part is unused and in its original packaging.
Return procedure for CLVTH16543MDLREP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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