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Texas Instruments CLVTH16543IDGGREP
- Part No.:
- CLVTH16543IDGGREP
- Manufacturer:
- Texas Instruments
- Package:
- 56-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
CLVTH16543IDGGREP.pdf
- Description:
- IC TXRX NON-INVERT 3.6V 56TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:350
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Product details
Overview
CLVTH16543IDGGREP from Texas Instruments is a 3.3-V ABT 16-bit registered transceiver with 3-state outputs, dual 8-bit bidirectional data flow control via independent latch-enable (LEAB/LEBA) and output-enable (OEAB/OEBA) inputs, bus-hold on all data inputs, and Ioff support for hot insertion. It operates from 2.7 V to 3.6 V and interfaces TTL-level 5-V systems while powered at 3.3 V, used in high-speed backplane and memory interface applications.
For engineers reviewing the CLVTH16543IDGGREP datasheet, CLVTH16543IDGGREP pinout, CLVTH16543IDGGREP application, or CLVTH16543IDGGREP equivalent, key selection criteria include its 56-pin TSSOP package, dual-directional register control, bus-hold functionality eliminating external resistors, and guaranteed operation across –40°C to 85°C industrial temperature range.
Technical Context
The CLVTH16543IDGGREP implements two independent 8-bit registered transceiver sections (A↔B), each with dedicated CE, LE, and OE controls enabling asynchronous bidirectional latching and 3-state output management. Its ABT BiCMOS process delivers low static power and high noise immunity.
It supports mixed-mode signaling: 5-V-tolerant inputs and outputs while VCC = 3.3 V, and features distributed VCC/GND pins, flow-through pinout, and active bus-hold circuitry-ensuring stable logic levels on floating data lines without external components.
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 directly without buffers |
| Bus-Hold Current | ±75 µA at VI = 2 V - maintains valid logic state on unused A/B port pins |
| tPLH / tPHL | 1.2 ns to 6.5 ns (VCC = 3.3 V) - supports >150 MHz data rates in registered mode |
| Ioff | ±550 µA at VCC = 0 - prevents backflow current during hot insertion or partial power-down |
| Operating Temp | –40°C to 85°C - qualified for extended industrial environments per JESD22 |
| Input Voltage | –0.5 V to 5.5 V - accepts 5-V logic signals safely with 3.3-V VCC |
Pinout & Package
CLVTH16543IDGGREP is housed in a 56-pin TSSOP (DGG) package, 13.9 mm × 7.9 mm × 1.2 mm max height, RoHS-compliant with NiPdAu lead finish and MSL Level-1 rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OEAB, 2OEAB, 1OEBA, 2OEBA | Output Enable (active-low) | Individually disables B or A outputs to high-impedance state; critical for bus arbitration |
| 1LEAB, 2LEAB, 1LEBA, 2LEBA | Latch Enable (active-low) | Controls transparent vs. storage mode of respective 8-bit register; edge-triggered on low-to-high transition |
| 1CEAB, 2CEAB, 1CEBA, 2CEBA | Chip Enable (active-low) | Gates data entry into latches; must be low for A→B or B→A data capture |
| A1–A8, B1–B8 (x2) | Bidirectional Data Ports | Two sets of 8-bit ports with bus-hold; support independent 8-bit or combined 16-bit transceivers |
| VCC, GND (x8) | Power & Ground | Distributed VCC/GND pins minimize switching noise and improve signal integrity at high speed |
Key Features
| Feature | Design Value |
|---|---|
| Bus-Hold Circuitry | Eliminates need for external pullup/pulldown resistors on all A/B data inputs, reducing BOM count and layout area |
| Ioff Protection | Disables outputs when VCC = 0, preventing damaging current backflow during hot-swap or partial system power-down |
| Flow-Through Architecture | Input and output pins positioned on opposite sides of package, simplifying PCB routing and minimizing trace crossovers |
| Mixed-Mode Signaling | 5-V-tolerant I/O with 3.3-V VCC allows seamless interfacing between legacy 5-V logic and modern low-voltage subsystems |
| Power-Up 3-State | Outputs remain in high-impedance state during power ramp-up/down, avoiding bus contention before system initialization |
Applications
| Memory Interface | Backplane Data Transfer |
|---|---|
Use Scenario: Bidirectional data transfer between 3.3-V microcontroller and 5-V SRAM or Flash memory in industrial PLC modules. IC Role / Device Role / Timing Role: Registered transceiver providing latch-synchronized read/write handshaking with independent A/B enable control. Use Value: Enables reliable level translation and timing isolation without external level shifters or clock domain crossing logic. | Use Scenario: High-speed parallel data exchange across modular backplane slots in test equipment chassis. IC Role / Device Role / Timing Role: 16-bit registered buffer managing direction-controlled data flow between slot controllers and central bus. Use Value: Distributed power/ground pins and low ground bounce (<0.8 V) maintain signal integrity at multi-MHz toggle rates. |
| Hot-Swappable I/O Module | Legacy System Interfacing |
Use Scenario: Field-replaceable I/O card insertion into powered industrial controller rack. IC Role / Device Role / Timing Role: Isolation device using Ioff and power-up 3-state to prevent bus conflicts during live insertion/removal. Use Value: Guarantees zero current backflow and automatic high-Z output activation during VCC ramp, meeting MIL-STD-1399 Class 2 requirements. | Use Scenario: Integrating new 3.3-V FPGA-based subsystem into existing 5-V industrial control cabinet. IC Role / Device Role / Timing Role: Bidirectional voltage translator and register synchronizer bridging FPGA I/O banks and legacy 5-V peripherals. Use Value: Eliminates discrete resistor networks and timing-critical glue logic by combining level translation, latching, and bus-hold in one IC. |
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 |
|---|---|---|---|
| SN74LVT16543DGGR | Commercial temp range (–40°C to 85°C), same DGG package and pinout, no enhanced product qualification | Lacks EP-grade reliability testing (HAST, biased 85/85, extended temp validation) | Select for cost-sensitive non-mission-critical designs where full EP qualification is unnecessary |
| SN74LVTH16543MDLREP | Same EP qualification but in 56-pin SSOP (DL) package, wider body (32.4 mm vs. 24.4 mm), different thermal impedance (73.5°C/W) | Better thermal performance in high-power-density layouts; requires PCB footprint change | Select when higher thermal margin is required and board space allows larger SSOP footprint |
Compared with SN74LVT16543DGGR, CLVTH16543IDGGREP adds enhanced product qualification for extended reliability, while compared with SN74LVTH16543MDLREP, it offers a narrower TSSOP footprint ideal for space-constrained industrial modules-both alternatives retain identical logic function and timing behavior.
Availability
CLVTH16543IDGGREP is available at Aetrix Electronics and suitable for memory interface, backplane data transfer, hot-swappable I/O module, and legacy system interfacing applications requiring stable component supply across extended temperature and long-lifecycle programs.
Supply support for CLVTH16543IDGGREP 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 connectivity solutions with emphasis on industrial, automotive, and high-reliability applications.
The CLVTH16543IDGGREP belongs to TI's Widebus™ family of advanced BiCMOS transceivers, designed specifically for robust, low-noise, mixed-voltage data path management in harsh industrial and aerospace environments.
FAQ
What is the operating temperature range for CLVTH16543IDGGREP?
The CLVTH16543IDGGREP is rated for operation from –40°C to +85°C and qualified per JEDEC standards including HAST and temperature cycling. This extended industrial temperature range ensures reliable performance in demanding environments such as factory automation controllers and outdoor communications equipment where ambient temperatures fluctuate widely. The device's ABT BiCMOS process contributes to stable parametric behavior across this full range.
Does CLVTH16543IDGGREP support hot insertion?
Yes, CLVTH16543IDGGREP supports hot insertion via integrated Ioff and power-up 3-state circuitry. When VCC is near 0 V, the Ioff feature disables all outputs to prevent backflow current, and the power-up 3-state function holds outputs in high-impedance until VCC reaches a stable level above 1.5 V. These features are verified per MIL-STD-883 and JESD78, making CLVTH16543IDGGREP suitable for modular systems requiring live card replacement without system shutdown.
Can CLVTH16543IDGGREP interface 5-V logic while powered at 3.3 V?
Yes, CLVTH16543IDGGREP supports mixed-mode signaling: its inputs and outputs tolerate up to 5.5 V even when VCC = 3.3 V. This allows direct connection to 5-V TTL buses without external level shifters. The device meets 5-V input voltage specifications (VI = 5.5 V) and maintains valid VOH/VOL levels under 3.3-V supply, enabling seamless integration between legacy 5-V subsystems and modern low-voltage FPGAs or microcontrollers.
What package type and dimensions does CLVTH16543IDGGREP use?
CLVTH16543IDGGREP uses a 56-pin TSSOP package (DGG), measuring 13.9 mm × 7.9 mm × 1.2 mm maximum height, with 0.5-mm lead pitch. It features NiPdAu lead finish, RoHS compliance, and MSL Level-1 (260°C, unlimited floor life). The package drawing DGG0056A defines land patterns and stencil recommendations optimized for automated assembly and thermal reliability in high-density industrial PCBs.
How does bus-hold functionality work on CLVTH16543IDGGREP?
CLVTH16543IDGGREP integrates active bus-hold circuitry on all A and B port inputs, maintaining unused or floating pins at their last-valid logic state with ±75 µA holding current. This eliminates the need for external pullup/pulldown resistors, reducing component count, board area, and potential signal integrity issues caused by resistor parasitics. Bus-hold activates automatically and functions across the full operating voltage and temperature range without configuration.
CLVTH16543IDGGREP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVTH
- Package/Case:
- 56-TFSOP (0.240", 6.10mm 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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 56-TSSOP
CLVTH16543IDGGREP FAQ
1.How can I place an order for CLVTH16543IDGGREP through Aetrix?
Please submit a Request for Quotation (RFQ) for CLVTH16543IDGGREP 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 CLVTH16543IDGGREP reliable?
The price and inventory of CLVTH16543IDGGREP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CLVTH16543IDGGREP is usually 5 days.
3.What payment methods are accepted for CLVTH16543IDGGREP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CLVTH16543IDGGREP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CLVTH16543IDGGREP?
CLVTH16543IDGGREP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CLVTH16543IDGGREP 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 CLVTH16543IDGGREP?
For technical support, including CLVTH16543IDGGREP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CLVTH16543IDGGREP requirements.
6.How does Aetrix verify that CLVTH16543IDGGREP is sourced from the original manufacturer or authorized distributors?
All CLVTH16543IDGGREP 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 CLVTH16543IDGGREP meets industry standards.
7.What is the process for return or replacement of CLVTH16543IDGGREP?
All CLVTH16543IDGGREP units undergo pre-shipment inspection (PSI). If there is an issue with CLVTH16543IDGGREP, 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 CLVTH16543IDGGREP part is unused and in its original packaging.
Return procedure for CLVTH16543IDGGREP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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