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Texas Instruments SN74LVTH16652DL
- Part No.:
- SN74LVTH16652DL
- Manufacturer:
- Texas Instruments
- Package:
- 56-BSSOP (0.295", 7.50mm Width)
- Datasheet:
-
SN74LVTH16652DL.pdf
- Description:
- IC TXRX NON-INVERT 3.6V 56SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:400
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Product details
Overview
SN74LVTH16652DL from Texas Instruments is a 3.3-V ABT 16-bit bus transceiver and register with 3-state outputs, designed for mixed-mode (3.3-V VCC / 5-V I/O) interfacing between low-voltage logic and legacy TTL systems. It supports real-time or registered data transfer across two independent 8-bit buses (A↔B), features bus-hold on all data inputs, and operates from 2.7 V to 3.6 V. Used in backplane interface modules and FPGA-to-ASIC bridging where voltage translation and data staging are required.
For engineers reviewing the SN74LVTH16652DL datasheet, SN74LVTH16652DL pinout, SN74LVTH16652DL application, or SN74LVTH16652DL equivalent, key selection criteria include its dual 8-bit register/transceiver architecture, Ioff-enabled hot-insertion support, 150-MHz clock frequency capability, bus-hold input retention, and DL-package thermal impedance of 74°C/W.
Technical Context
The SN74LVTH16652DL implements two independent 8-bit bidirectional data paths with separate clock (CLKAB/CLKBA), select (SAB/SBA), and output-enable (OEAB/OEBA) controls per direction. Each path supports simultaneous real-time transfer or edge-triggered storage into internal D flip-flops - eliminating multiplexer glitches during mode transitions.
Its Advanced BiCMOS Technology (ABT) delivers low static power at 3.3 V while maintaining 5-V tolerant inputs/outputs, and distributed VCC/GND pins minimize high-speed switching noise. The device enters high-impedance state during power-up/down when VCC is below 1.5 V, and Ioff circuitry prevents backflow current when powered off.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.7 V to 3.6 V - supports unregulated battery operation down to 2.7 V without functional degradation |
| Max Clock Frequency | 150 MHz - enables high-throughput data staging in real-time bus arbitration systems |
| IOL / IOH | 64 mA / –32 mA at VCC = 3 V - drives standard TTL loads directly without external buffers |
| Input Voltage Tolerance | 0 V to 5.5 V - allows direct connection to 5-V buses without level-shifting components |
| Bus-Hold Current | ±75 µA at VI = 2 V or 0.8 V - maintains valid logic states on floating data lines, eliminating external pull resistors |
| θJA (DL Package) | 74°C/W - defines thermal derating limits for continuous operation in compact PCB layouts |
| VOLP (Ground Bounce) | < 0.8 V at VCC = 3.3 V - reduces signal integrity risk in dense multi-transceiver configurations |
Pinout & Package
SN74LVTH16652DL uses a 56-pin Shrink Small-Outline Package (SSOP-DL) with 0.5-mm pitch, 13.9–14.1 mm body width, and 1.2-mm max height. Pin 1 is located at top-left corner with notch or index mark; package conforms to JEDEC MO-153.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OEAB, 2OEAB, 1OEBA, 2OEBA | Output Enable (active-low) | Individually control 3-state output drivers for A→B or B→A directions; asserted low enables data flow |
| 1CLKAB, 2CLKAB, 1CLKBA, 2CLKBA | Register Clock (rising-edge) | Edge-triggered storage of A or B bus data into internal D flip-flops regardless of OE/S state |
| 1SAB, 2SAB, 1SBA, 2SBA | Select Control (high = stored data) | Determines whether transceiver outputs reflect real-time or registered bus values; glitch-free transition logic |
| A1–A8, B1–B8 (x2 sets) | Bi-directional Data I/O | Two independent 8-bit buses with bus-hold on all inputs; no external termination required |
| VCC, GND (x8 each) | Power Distribution | Distributed supply/ground pins minimize simultaneous switching noise and improve signal integrity |
Key Features
| Feature | Design Value |
|---|---|
| Mixed-mode I/O compatibility | 3.3-V VCC with 5-V tolerant inputs/outputs enables seamless integration into hybrid-voltage systems |
| Hot-insertion support | Ioff and power-up 3-state prevent damaging current backflow and bus conflicts during live board insertion |
| Flow-through pin architecture | Input and output pins arranged to minimize trace crossing - simplifies PCB layout and reduces crosstalk |
| Latch-up immunity | Exceeds 500 mA per JESD 17 - ensures robustness in noisy industrial environments |
| ESD protection | 2000 V HBM (MIL-STD-883) and 200 V machine model - enhances reliability in handling and assembly |
Applications
| Backplane Interface Module | FPGA-to-ASIC Bridging |
|---|---|
Use Scenario: Interfacing multiple 5-V legacy peripheral cards to a 3.3-V central controller via shared parallel bus. IC Role / Device Role / Timing Role: Bidirectional voltage-translating transceiver with register staging to decouple timing domains and absorb skew. Use Value: Eliminates need for discrete level shifters and external latches while supporting hot-swap maintenance of card slots. | Use Scenario: Synchronizing burst-mode data transfers between a Xilinx Artix FPGA (3.3-V I/O) and a legacy ASIC with 5-V signaling. IC Role / Device Role / Timing Role: Registered bus transceiver providing setup/hold margin extension and clock-domain crossing buffering. Use Value: Enables reliable handshaking at 150 MHz without custom RTL synchronization logic or external FIFOs. |
| Industrial PLC I/O Expansion | Test Equipment Bus Controller |
Use Scenario: Adding isolated digital I/O banks to a programmable logic controller using modular backplane architecture. IC Role / Device Role / Timing Role: Dual 8-bit transceiver with bus-hold preserving signal integrity on unterminated stubs during module insertion/removal. Use Value: Prevents floating inputs from causing spurious logic transitions during hot-plug events in factory-floor environments. | Use Scenario: Controlling multiple DUT interfaces simultaneously in automated test equipment with shared GPIB or VXI backplanes. IC Role / Device Role / Timing Role: High-speed registered repeater enabling deterministic timing alignment across parallel test channels. Use Value: Reduces inter-channel skew to <0.5 ns, improving test repeatability for high-speed digital validation. |
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 |
|---|---|---|---|
| SN74LVC16652DGGR | Lower drive strength (24 mA IOL), no bus-hold, 3.3-V only I/O (not 5-V tolerant) | Suitable only in pure 3.3-V systems without legacy interface requirements | Choose when cost and power are prioritized over mixed-voltage interoperability |
| SN74ALVCH16652DL | Higher speed (200 MHz fmax), same DL package, but no Ioff or hot-insertion support | Requires external power sequencing for safe insertion; not rated for live-backplane use | Prefer when maximum throughput is critical and system-level hot-swap is handled elsewhere |
Compared with SN74LVC16652DGGR and SN74ALVCH16652DL, the SN74LVTH16652DL uniquely combines 5-V I/O tolerance, bus-hold, and Ioff-based hot-insertion in a single DL-packaged device - making it the only option for legacy-compatible, field-serviceable backplane designs.
Availability
SN74LVTH16652DL is available at Aetrix Electronics and suitable for backplane interface modules, FPGA-to-ASIC bridging, industrial PLC I/O expansion, and test equipment bus controllers requiring stable component supply across extended product lifecycles.
Supply support for SN74LVTH16652DL 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 and embedded processing solutions, with core expertise in high-reliability interface, power, and signal-chain ICs.
The SN74LVTH16652DL belongs to TI's Widebus™ family of advanced bus-interface devices, engineered specifically for robust mixed-voltage system interconnect in industrial, telecom, and computing infrastructure.
FAQ
What voltage levels can SN74LVTH16652DL tolerate on its I/O pins?
The SN74LVTH16652DL accepts input voltages up to 5.5 V and drives outputs compatible with 5-V TTL logic, while operating from a 2.7–3.6 V VCC supply. This 5-V tolerance enables direct interfacing with legacy 5-V buses without external level shifters - a key advantage over standard LVC-family transceivers that are limited to 3.3-V I/O.
Does SN74LVTH16652DL support hot insertion in live backplane systems?
Yes, SN74LVTH16652DL supports hot insertion via integrated Ioff circuitry and power-up 3-state functionality. When VCC is 0 V, Ioff disables outputs to prevent backflow current; during power-up/down (VCC < 1.5 V), outputs remain in high-impedance state. These features meet industry requirements for live module replacement in telecom and industrial backplanes.
How does the bus-hold feature on SN74LVTH16652DL eliminate external resistors?
The SN74LVTH16652DL integrates active bus-hold circuitry on all A and B port inputs, providing ±75 µA holding current to maintain valid logic states on floating or unterminated lines. This eliminates the need for external pullup/pulldown resistors - reducing BOM count, PCB area, and potential signal integrity issues caused by resistor parasitics.
Can SN74LVTH16652DL operate as two independent 8-bit transceivers?
Yes, SN74LVTH16652DL is architecturally partitioned into two independent 8-bit sections (1xx and 2xx), each with dedicated CLK, OE, and S control inputs. This allows concurrent operation - e.g., one section transferring real-time data while the other holds and forwards registered data - maximizing flexibility in complex bus-management applications.
What is the thermal performance difference between DL and DGG packages for SN74LVTH16652DL?
SN74LVTH16652DL in the SSOP-DL package has a junction-to-ambient thermal resistance (θJA) of 74°C/W, versus 81°C/W for the TSSOP-DGG variant. The lower θJA gives the DL package better power dissipation capability in thermally constrained layouts, especially important when driving multiple loads at high frequency near the 64-mA IOL limit.
SN74LVTH16652DL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVTH
- Package/Case:
- 56-BSSOP (0.295", 7.50mm Width)
- Packaging:
- Bulk
- 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-SSOP
SN74LVTH16652DL FAQ
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Please submit a Request for Quotation (RFQ) for SN74LVTH16652DL on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
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Once your SN74LVTH16652DL order is processed, you will receive an email with the shipment details and tracking number.
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5.How can I obtain technical support or documentation for SN74LVTH16652DL?
For technical support, including SN74LVTH16652DL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVTH16652DL requirements.
6.How does Aetrix verify that SN74LVTH16652DL is sourced from the original manufacturer or authorized distributors?
All SN74LVTH16652DL 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 SN74LVTH16652DL meets industry standards.
7.What is the process for return or replacement of SN74LVTH16652DL?
All SN74LVTH16652DL units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVTH16652DL, 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 SN74LVTH16652DL part is unused and in its original packaging.
Return procedure for SN74LVTH16652DL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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