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Texas Instruments SN74LVTH16245ADGVR
- Part No.:
- SN74LVTH16245ADGVR
- Manufacturer:
- Texas Instruments
- Package:
- 48-TFSOP (0.173", 4.40mm Width)
- Datasheet:
-
SN74LVTH16245ADGVR.pdf
- Description:
- IC TXRX NON-INVERT 3.6V 48TVSOP
- Quantity:
- Payment:
- Shipping:
Inventory:448
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Product details
Overview
SN74LVTH16245ADGVR from Texas Instruments is a 3.3-V ABT 16-bit dual-octal noninverting bus transceiver with 3-state outputs, designed for asynchronous bidirectional data transfer between 3.3-V and 5-V systems. It features bus-hold circuitry, Ioff support for hot insertion, distributed VCC/GND pins, and operates down to 2.7 V supply. Used in mixed-voltage backplane interfaces and memory expansion subsystems.
For engineers reviewing the SN74LVTH16245ADGVR datasheet, SN74LVTH16245ADGVR pinout, SN74LVTH16245ADGVR application, or SN74LVTH16245ADGVR equivalent, key selection criteria include 48-pin TVSOP package compatibility, 3.3-V VCC with 5-V tolerant I/O, ±64 mA output drive, bus-hold functionality eliminating external resistors, and guaranteed hot-insertion behavior via Ioff and power-up 3-state.
Technical Context
The SN74LVTH16245ADGVR implements two independent 8-bit transceiver sections (A↔B), each controlled by dedicated DIR and OE inputs. Its Advanced BiCMOS Technology (ABT) enables TTL-level interface compatibility while operating at 3.3 V, supporting mixed-mode signal operation with 5-V inputs/outputs and unregulated battery supply down to 2.7 V.
Input circuits remain always active; bus-hold logic maintains valid logic states on undriven A/B port inputs without external biasing. The device enters high-impedance state during power-up/down when VCC is below 1.5 V, and uses Ioff to block reverse current flow when powered off-critical for live system upgrades and modular backplanes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Supply Range | 2.7 V to 3.6 V - supports battery-backed and low-noise 3.3-V rail designs with margin for droop |
| IOL / IOH Drive | 64 mA / –32 mA - sufficient to drive 50-pF loads at ≤4 ns propagation delay in 3.3-V systems |
| tPLH / tPHL | 2.3 ns / 2.1 ns @ VCC = 3.3 V - enables high-speed interconnect between FPGAs and ASICs in compact layouts |
| Bus-Hold Current | ±750 µA max - actively retains logic state on floating inputs, removing need for pullup/pulldown resistors |
| Ioff Leakage | ±100 µA @ VCC = 0 - prevents damaging backflow during hot-swap, protecting upstream drivers and power rails |
| VIL / VIH Thresholds | 0.8 V / 2.0 V - compatible with TTL input levels and robust against noise in industrial environments |
| ESD Rating | 2000-V HBM, 200-V MM - exceeds JEDEC standards for handling and board-level reliability |
Pinout & Package
SN74LVTH16245ADGVR is housed in a 48-pin Thin Very Small Outline Package (TVSOP, DGV), measuring 12.6 mm × 6.2 mm × 1.2 mm max height, compliant with JEDEC MO-153 and optimized for high-density PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1DIR, 2DIR | Direction control input (per 8-bit section) | Determines data flow direction: LOW = B→A, HIGH = A→B; enables true bidirectional isolation |
| 1OE, 2OE | Output enable input (per 8-bit section) | Active LOW; places corresponding 8-bit port outputs in high-impedance state when HIGH |
| 1A1–1A8, 2A1–2A8 | A-port data I/O terminals | Noninverting inputs/outputs for first and second octal data paths; always active, require defined logic level |
| 1B1–1B8, 2B1–2B8 | B-port data I/O terminals | Noninverting inputs/outputs mirroring A-port; support mixed-voltage interfacing up to 5.5 V |
| VCC, GND | Power and ground terminals | Distributed across package (12× VCC, 12× GND) to minimize simultaneous switching noise and ground bounce |
Key Features
| Feature | Design Value |
|---|---|
| Bus-Hold Circuitry | Eliminates external pullup/pulldown resistors on all A/B port inputs, reducing BOM count and layout area |
| Ioff and Power-Up 3-State | Guarantees high-impedance outputs during power sequencing, enabling safe hot insertion into live backplanes |
| Mixed-Mode Signal Operation | Accepts 5-V inputs and drives 5-V loads while powered from 3.3-V VCC-no level shifters required |
| Flow-Through Pinout | Input-to-output signal path traverses package linearly (e.g., 1A1 → 1B1), simplifying trace routing and impedance control |
| Distributed Power/Ground | Alternating VCC and GND pins reduce simultaneous switching noise and improve signal integrity at >100 MHz data rates |
Applications
| Industrial Backplane Interface | FPGA-to-ASIC Data Bridge |
|---|---|
|
Use Scenario: Interfacing legacy 5-V peripheral modules with modern 3.3-V FPGA-based controller cards in programmable logic controllers. IC Role / Device Role / Timing Role: Bidirectional voltage-tolerant transceiver managing data flow between mismatched voltage domains with precise direction control. Use Value: Enables drop-in replacement of older transceivers without redesigning power or level-shifting circuitry-reducing time-to-market for industrial upgrades. |
Use Scenario: High-speed parallel data exchange between Xilinx Artix-7 FPGA and custom ASIC in test equipment requiring deterministic latency. IC Role / Device Role / Timing Role: Low-skew, noninverting bus buffer providing clean 3.3-V signaling with sub-3 ns propagation delay and bus-hold stability. Use Value: Maintains signal integrity across 16-bit wide paths at 100+ MHz clock rates while suppressing floating-input noise-induced glitches. |
| Memory Expansion Subsystem | Hot-Swappable Module Interface |
|
Use Scenario: Extending DDR2 SDRAM address/data bus in embedded medical imaging systems where space-constrained PCBs limit routing layers. IC Role / Device Role / Timing Role: 16-bit bidirectional repeater isolating memory controller from load capacitance of additional DIMM slots. Use Value: Doubles effective fanout capability while maintaining timing margins-enabling dual-rank memory configurations without timing closure issues. |
Use Scenario: Enabling field-replaceable compute modules in telecom baseband units that must be inserted/removed without powering down the chassis. IC Role / Device Role / Timing Role: Hot-plug–qualified transceiver providing galvanic isolation and current-blocking during insertion/removal sequences. Use Value: Prevents bus contention and power rail disturbance during module swaps-meeting GR-63-CORE reliability requirements for carrier-grade hardware. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC16245ADGGR | Lower drive strength (24 mA sink/source), no bus-hold, LVC logic family instead of LVTH ABT | Suitable for lower-speed, lower-power 3.3-V-only systems without 5-V tolerance requirement | Choose when cost and static power are prioritized over mixed-voltage operation and hot-swap robustness |
| SN74AVC16245DGVR | Supports 1.2–3.6 V VCC range, higher speed (tPD < 2 ns), but lacks Ioff and bus-hold | Optimized for ultra-low-voltage mobile SoC interconnects, not industrial hot-swap or 5-V interfacing | Prefer for battery-powered applications needing dynamic voltage scaling, not for legacy system integration |
Compared with SN74LVC16245ADGGR and SN74AVC16245DGVR, the SN74LVTH16245ADGVR uniquely combines 5-V I/O tolerance, bus-hold, and Ioff-making it the only choice for reliable mixed-voltage hot-swap in industrial and telecom infrastructure.
Availability
SN74LVTH16245ADGVR is available at Aetrix Electronics and suitable for industrial backplane interfaces, FPGA-to-ASIC bridges, memory expansion subsystems, and hot-swappable module interfaces requiring stable component supply across extended product lifecycles.
Supply support for SN74LVTH16245ADGVR 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 decades of expertise in high-reliability logic and interface solutions.
The SN74LVTH16245ADGVR belongs to TI's Widebus™ family of advanced bus interface devices, engineered specifically for robust mixed-voltage communication in industrial automation, telecom infrastructure, and mission-critical embedded systems.
FAQ
What voltage levels can SN74LVTH16245ADGVR tolerate on its I/O pins?
The SN74LVTH16245ADGVR accepts input voltages up to 5.5 V and drives outputs to 5-V logic levels while operating from a 3.3-V VCC supply. This mixed-mode capability allows direct interfacing with legacy 5-V peripherals without external level shifters, and is validated across the full –40°C to 85°C operating temperature range.
Does SN74LVTH16245ADGVR support hot insertion in live backplane systems?
Yes, SN74LVTH16245ADGVR supports hot insertion via two integrated features: Ioff circuitry disables outputs when VCC = 0 V to prevent reverse current flow, and power-up 3-state ensures outputs remain high-impedance during power ramp-up. These are production-tested per TI's ABT process and documented in the SCBS143R datasheet.
How does bus-hold functionality work on SN74LVTH16245ADGVR, and why is it valuable?
SN74LVTH16245ADGVR integrates active bus-hold circuitry on all A/B port inputs, which applies ±750 µA of overdrive current to retain the last-valid logic state when inputs float. This eliminates external pullup/pulldown resistors-reducing BOM cost, PCB area, and potential noise coupling in high-density designs.
What is the maximum data rate supported by SN74LVTH16245ADGVR in a typical application?
While not specified as a serial data rate, SN74LVTH16245ADGVR achieves 2.1–2.3 ns propagation delay (tPLH/tPHL) and <0.5 ns skew under 50-pF load conditions at 3.3 V. This supports reliable parallel bus operation up to 100–150 MHz clock frequencies in well-designed layouts with controlled impedance and proper termination.
Is SN74LVTH16245ADGVR pin-compatible with other packages in the LVTH16245A family?
Yes, SN74LVTH16245ADGVR shares identical pinout and function mapping with SN74LVTH16245ADGGR (TSSOP) and SN74LVTH16245ADL (SSOP)-all 48-pin packages with matching terminal assignments for DIR, OE, A/B ports, VCC, and GND. Mechanical dimensions differ, but PCB footprint design rules allow direct substitution with layout review.
SN74LVTH16245ADGVR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVTH
- Package/Case:
- 48-TFSOP (0.173", 4.40mm 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:
- 48-TVSOP
SN74LVTH16245ADGVR FAQ
1.How can I place an order for SN74LVTH16245ADGVR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVTH16245ADGVR 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 SN74LVTH16245ADGVR reliable?
The price and inventory of SN74LVTH16245ADGVR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVTH16245ADGVR is usually 5 days.
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Once your SN74LVTH16245ADGVR 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 SN74LVTH16245ADGVR?
For technical support, including SN74LVTH16245ADGVR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVTH16245ADGVR requirements.
6.How does Aetrix verify that SN74LVTH16245ADGVR is sourced from the original manufacturer or authorized distributors?
All SN74LVTH16245ADGVR 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 SN74LVTH16245ADGVR meets industry standards.
7.What is the process for return or replacement of SN74LVTH16245ADGVR?
All SN74LVTH16245ADGVR units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVTH16245ADGVR, 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 SN74LVTH16245ADGVR part is unused and in its original packaging.
Return procedure for SN74LVTH16245ADGVR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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