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Texas Instruments CLVTH16952IDGGREP
- Part No.:
- CLVTH16952IDGGREP
- Manufacturer:
- Texas Instruments
- Package:
- 56-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
CLVTH16952IDGGREP.pdf
- Description:
- IC TXRX NON-INVERT 3.6V 56TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,461
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Product details
Overview
CLVTH16952IDGGREP from Texas Instruments is a 16-bit registered transceiver operating at 3.3 V VCC with 5-V tolerant inputs/outputs, supporting mixed-mode TTL interfacing between 3.3-V and 5-V systems. It features dual 8-bit or single 16-bit bidirectional data flow, clocked register storage on CLKAB/CLKBA rising edge, and bus-hold circuitry eliminating external pull resistors. Typical applications include backplane data routing in industrial control I/O modules.
For engineers reviewing the CLVTH16952IDGGREP datasheet, CLVTH16952IDGGREP pinout, CLVTH16952IDGGREP application, or CLVTH16952IDGGREP equivalent, key selection considerations include its 3.3-V supply with 5-V I/O tolerance, hot-insertion support via Ioff and power-up 3-state, distributed VCC/GND pins for noise reduction, flow-through architecture for PCB layout optimization, and bus-hold on all data inputs.
Technical Context
This device implements two independent 8-bit registered transceiver channels (A↔B), each with separate clock (CLKAB/CLKBA), clock-enable (CLKENAB/CLKENBA), and output-enable (OEAB/OEBA) controls. Data latching occurs on the low-to-high transition of the respective clock when clock-enable is low.
It uses Advanced BiCMOS Technology (ABT) for low static power and high-speed operation up to 150 MHz. Bus-hold circuitry maintains valid logic levels on floating A/B port inputs, while Ioff and power-up 3-state ensure safe hot insertion by disabling outputs during power transitions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Supply Range | 2.7 V to 3.6 V - supports unregulated battery operation down to 2.7 V without functional degradation |
| Input Voltage Tolerance | −0.5 V to 7 V - enables direct connection to 5-V TTL buses without level shifters |
| Max Clock Frequency | 150 MHz - ensures high-throughput data transfer in fast synchronous bus interfaces |
| Output Drive Strength | IOL = 64 mA / IOH = −32 mA - sufficient to drive standard TTL loads and moderate capacitive stubs |
| Propagation Delay | tPLH/tPHL ≤ 4.4 ns at VCC = 2.7 V - guarantees timing compliance in sub-5 ns critical paths |
| Bus-Hold Current | ±500 µA at VCC = 3.6 V - actively holds unused inputs at valid logic levels without external components |
| Power-Up 3-State | Active below 1.5 V VCC - prevents bus contention during power ramp-up and ramp-down sequences |
Pinout & Package
CLVTH16952IDGGREP is housed in a 56-pin Thin Shrink Small-Outline Package (TSSOP-DGG), 12.5 mm × 6.1 mm footprint, 1.2 mm max height, RoHS-compliant with CU NIPDAU finish and MSL Level-1 rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OEAB, 2OEAB, 1OEBA, 2OEBA | Output Enable (active-low) | Controls direction and output state per 8-bit channel; low enables A↔B data flow |
| 1CLKAB, 2CLKAB, 1CLKBA, 2CLKBA | Register Clock (rising-edge triggered) | Latches data from A to B or B to A on low-to-high transition when corresponding CLKEN is low |
| 1CLKENAB, 2CLKENAB, 1CLKENBA, 2CLKENBA | Clock Enable (active-low) | Gates clock functionality; high disables register updates regardless of CLK edge |
| 1A1–1A8, 2A1–2A8, 1B1–1B8, 2B1–2B8 | Data I/O Ports | Two independent 8-bit bidirectional data buses with bus-hold on all inputs |
| VCC (pins 7, 20, 33, 46) | Supply Voltage | Distributed power pins minimize simultaneous switching noise across the 16-bit interface |
| GND (pins 4, 11, 24, 37, 50) | Ground Reference | Five ground pins provide low-inductance return paths for high-speed switching currents |
Key Features
| Feature | Design Value |
|---|---|
| Mixed-mode 3.3-V/5-V I/O | Enables seamless interconnection between modern low-voltage logic and legacy 5-V systems without external level translators |
| Hot-insertion support | Ioff limits reverse current during partial power-down; power-up 3-state prevents bus conflicts during sequencing |
| Integrated bus-hold | Eliminates need for 10-kΩ external pullup/pulldown resistors on all 32 data lines, reducing BOM count and board area |
| Flow-through pinout | Input and output pins aligned on opposite sides of package simplifies layer routing and reduces trace crossovers |
| Distributed VCC/GND | Four VCC and five GND pins reduce power delivery impedance and suppress ground bounce (VOLP < 0.8 V typical) |
Applications
| Industrial Backplane Interface | Modular PLC I/O Carrier |
|---|---|
Use Scenario: High-density modular controller chassis where CPU module (3.3 V) communicates with legacy 5-V I/O modules over parallel backplane bus. IC Role / Device Role / Timing Role: Registered transceiver providing synchronized, noise-immune data transfer between voltage domains with clocked handshaking. Use Value: Eliminates level-shifter ICs and external bus-hold resistors, reducing component count by ≥5 parts per interface while maintaining 150-MHz throughput. |
Use Scenario: Field-replaceable I/O carrier board accepting analog/digital modules with mixed 3.3-V logic and 5-V sensor/actuator interfaces. IC Role / Device Role / Timing Role: Bidirectional data register buffering local module data to main controller bus with precise clock-edge sampling. Use Value: Bus-hold prevents floating inputs during hot-swap events; Ioff protects powered-down modules from backfeeding into live backplane. |
| Test Equipment Digital Pattern Generator | Automated Test Fixture Controller |
Use Scenario: High-speed digital pattern generator requiring precise timing alignment between 3.3-V FPGA control logic and 5-V DUT interface drivers. IC Role / Device Role / Timing Role: Synchronized register stage capturing FPGA outputs and presenting them to DUT with controlled setup/hold margins. Use Value: 2.5 ns setup time and 4.4 ns max propagation delay enable sub-5 ns timing windows; distributed power pins suppress jitter from switching noise. |
Use Scenario: Production test fixture managing multiple 5-V peripheral devices (relays, solenoids, sensors) using a 3.3-V microcontroller. IC Role / Device Role / Timing Role: Level-tolerant transceiver isolating MCU GPIOs from noisy industrial loads while enabling bidirectional status feedback. Use Value: ±500 µA bus-hold current maintains defined logic states during relay coil decay transients; 64 mA sink capability drives LED indicators directly. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar registered transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVTH16245ADGGR | Non-registered 16-bit transceiver; no clock or register functionality; lower propagation delay (3.4 ns) | Suitable only for combinatorial bus isolation, not for clock-synchronized data capture or pipeline staging | Select when timing-critical transparent buffering is needed without register hold, and clock control is handled externally |
| SN74ALVCH162244DGGR | 16-bit non-inverting buffer with 3-state; no transceiver direction control or register; supports 1.65–3.6 V VCC only | Limited to unidirectional, voltage-level-matched applications; lacks 5-V input tolerance and bus-hold | Choose for low-voltage-only systems requiring minimal propagation delay (2.1 ns) and ultra-low ICC (20 µA) |
Compared with CLVTH16952IDGGREP, SN74LVTH16245ADGGR offers faster transparent transfer but no clocked registration, while SN74ALVCH162244DGGR provides lower power and speed in pure 3.3-V environments but cannot interface to 5-V buses or replace register-based synchronization.
Availability
CLVTH16952IDGGREP is available at Aetrix Electronics and suitable for industrial automation backplanes, modular PLC carriers, and automated test equipment requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for CLVTH16952IDGGREP 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 for industrial, automotive, and communications markets.
CLVTH16952IDGGREP belongs to TI's Widebus™ family of advanced bus-interface ICs, engineered specifically for high-speed, mixed-voltage system interconnect in noise-sensitive industrial and test equipment environments.
FAQ
What is the maximum clock frequency supported by CLVTH16952IDGGREP?
The CLVTH16952IDGGREP supports a maximum clock frequency of 150 MHz across its full operating temperature range (−40°C to 85°C) and supply voltage range (2.7 V to 3.6 V). This specification is verified under load conditions with CL = 50 pF and applies to both CLKAB and CLKBA inputs. The device maintains timing integrity at this rate due to its Advanced BiCMOS Technology and distributed power/ground architecture.
Does CLVTH16952IDGGREP support hot insertion, and how is it implemented?
Yes, CLVTH16952IDGGREP supports hot insertion through two integrated mechanisms: Ioff circuitry disables outputs when VCC = 0 V, preventing damaging current backflow, and power-up 3-state forces outputs into high-impedance during power ramp-up/down. These features are fully specified per JEDEC standards and require no external circuitry-simply tie OE inputs appropriately and follow TI's recommended power sequencing guidelines.
Can CLVTH16952IDGGREP interface directly between a 3.3-V FPGA and a 5-V peripheral without level shifters?
Yes, CLVTH16952IDGGREP can interface directly: its inputs tolerate up to 7 V (including 5-V TTL), and its outputs swing rail-to-rail within the 3.3-V domain while sourcing/sinking sufficient current (−32 mA/64 mA) to drive standard 5-V TTL inputs. No external level shifters are required, though proper termination and signal integrity practices must still be observed for reliable 150-MHz operation.
What is the purpose of bus-hold circuitry in CLVTH16952IDGGREP, and how strong is it?
The bus-hold circuitry in CLVTH16952IDGGREP actively maintains valid logic levels on unused or floating A/B port inputs, eliminating the need for external pullup/pulldown resistors. At VCC = 3.6 V, it provides ±500 µA overdrive current-sufficient to override typical noise margins and prevent metastability. This feature reduces BOM cost, saves PCB space, and improves reliability in modular or hot-swap systems where connectors may be temporarily unpopulated.
How does the flow-through architecture of CLVTH16952IDGGREP improve PCB layout?
The flow-through architecture of CLVTH16952IDGGREP aligns data inputs (e.g., A-side) on one side of the TSSOP package and outputs (e.g., B-side) on the opposite side, enabling straight-line trace routing without vias or layer jumps. This minimizes trace length, reduces crosstalk, simplifies impedance control, and lowers EMI-particularly beneficial in dense backplane or carrier-board layouts where signal integrity and routing density are critical.
CLVTH16952IDGGREP 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:
- Obsolete
- 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
CLVTH16952IDGGREP FAQ
1.How can I place an order for CLVTH16952IDGGREP through Aetrix?
Please submit a Request for Quotation (RFQ) for CLVTH16952IDGGREP 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 CLVTH16952IDGGREP reliable?
The price and inventory of CLVTH16952IDGGREP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CLVTH16952IDGGREP is usually 5 days.
3.What payment methods are accepted for CLVTH16952IDGGREP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CLVTH16952IDGGREP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CLVTH16952IDGGREP?
CLVTH16952IDGGREP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CLVTH16952IDGGREP 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 CLVTH16952IDGGREP?
For technical support, including CLVTH16952IDGGREP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CLVTH16952IDGGREP requirements.
6.How does Aetrix verify that CLVTH16952IDGGREP is sourced from the original manufacturer or authorized distributors?
All CLVTH16952IDGGREP 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 CLVTH16952IDGGREP meets industry standards.
7.What is the process for return or replacement of CLVTH16952IDGGREP?
All CLVTH16952IDGGREP units undergo pre-shipment inspection (PSI). If there is an issue with CLVTH16952IDGGREP, 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 CLVTH16952IDGGREP part is unused and in its original packaging.
Return procedure for CLVTH16952IDGGREP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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