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Texas Instruments SN74LVTH16245ADGGR
- Part No.:
- SN74LVTH16245ADGGR
- Manufacturer:
- Texas Instruments
- Package:
- 48-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
SN74LVTH16245ADGGR.pdf
- Description:
- IC TXRX NON-INVERT 3.6V 48TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,479
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Product details
Overview
SN74LVTH16245ADGGR 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 mixed-mode (5-V input/output) buses. It features bus-hold circuitry, Ioff support for hot insertion, distributed VCC/GND pins, and operates across –40°C to 85°C.
For engineers reviewing the SN74LVTH16245ADGGR datasheet, SN74LVTH16245ADGGR pinout, SN74LVTH16245ADGGR application, or SN74LVTH16245ADGGR equivalent, this device is selected for low-voltage bus interfacing where TTL-level compatibility, ground-bounce suppression (<0.8 V), and power-up 3-state safety are required in industrial control backplanes and memory expansion subsystems.
Technical Context
The SN74LVTH16245ADGGR implements Advanced BiCMOS Technology (ABT) for 3.3-V operation with TTL-compatible 5-V I/O tolerance. Its dual-octal architecture supports independent direction control per 8-bit section via DIR inputs and output-enable gating via OE pins, enabling flexible A↔B or B↔A data flow without bus contention.
It integrates active bus-hold on all A/B-port inputs (eliminating external resistors), Ioff protection during power-down, and distributed power/ground pins to suppress high-speed switching noise. The flow-through pinout minimizes PCB trace skew and simplifies layout in dense data-path routing.
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 while maintaining full logic functionality and drive strength. |
| IOL / IOH Drive | 64 mA / –32 mA at VCC = 3.3 V - delivers robust TTL-level sink/source capability compatible with legacy 5-V loads. |
| Propagation Delay | tPLH/tPHL ≤ 3.7 ns at VCC = 3.3 V, CL = 50 pF - enables high-speed data transfer in 100+ MHz bus applications. |
| Bus-Hold Current | ±750 µA max at VCC = 3.6 V - actively holds unused inputs at valid logic states without external biasing components. |
| IOFF Leakage | ±100 µA at VCC = 0 V - prevents damaging backflow current during hot-insertion or partial power-down scenarios. |
| VOLP (Ground Bounce) | <0.8 V at VCC = 3.3 V, TA = 25°C - reduces signal integrity risk in multi-driver parallel bus environments. |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade embedded systems including programmable logic controllers and communications modules. |
Pinout & Package
TSSOP-48 package (DGG), 12.4 mm × 6.1 mm × 1.2 mm body, 0.5 mm pitch, RoHS-compliant NiPdAu lead finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1DIR, 2DIR | Direction control input (per 8-bit section) | Determines data flow direction: DIR = L enables B→A; DIR = H enables A→B. |
| 1OE, 2OE | Output enable input (per 8-bit section) | OE = L activates outputs; OE = H places both A and B ports in high-impedance state. |
| A1–A8, B1–B8 (×2) | Bidirectional data I/O terminals | Each port supports TTL-level inputs and outputs; bus-hold active on all inputs regardless of OE/DIR state. |
| VCC, GND (×8 each) | Distributed power and ground connections | Minimizes simultaneous switching noise (SSN) and improves signal integrity in high-speed bus operation. |
Key Features
| Feature | Design Value |
|---|---|
| Mixed-mode I/O tolerance | Accepts 5-V inputs and drives 5-V loads while powered from 3.3-V VCC - eliminates level-shifter ICs in hybrid-voltage systems. |
| Power-up 3-state | Outputs remain in high-impedance state during power ramp (VCC 0 → 1.5 V), preventing bus conflicts at startup/shutdown. |
| Active bus-hold | Eliminates need for external pullup/pulldown resistors on unused data lines - reduces BOM count and PCB area in sparse-bus designs. |
| Hot-insertion support | Ioff circuitry disables outputs when VCC = 0, blocking reverse current flow - enables safe live replacement in modular backplane systems. |
| Flow-through pinout | Input and output pins arranged linearly across package edges - simplifies layer routing and reduces trace length mismatch in parallel bus layouts. |
Applications
| Industrial Backplane Interface | Memory Expansion Subsystem |
|---|---|
|
Use Scenario: Interfacing a 3.3-V FPGA-based controller to legacy 5-V peripheral cards in a modular PLC rack. IC Role / Device Role / Timing Role: Bidirectional level-translating bus transceiver managing address/data/control signals between voltage domains. Use Value: Enables direct connection without discrete level shifters; bus-hold prevents floating inputs during card hot-swap events. |
Use Scenario: Expanding SRAM capacity on an embedded ARM9 board using 5-V fast-page-mode memory chips. IC Role / Device Role / Timing Role: Isolating and driving 16-bit data/address bus between 3.3-V processor and 5-V memory array. Use Value: Delivers 64-mA sink current to meet memory write timing; low VOLP ensures clean read sampling under heavy bus loading. |
| Communications Module Data Bridge | Test Equipment Signal Conditioning |
|
Use Scenario: Bridging UART and SPI buses between 3.3-V SoC and 5-V RS-485 transceivers in a field-deployable gateway. IC Role / Device Role / Timing Role: Direction-controlled transceiver buffering serial control/data lines with configurable isolation. Use Value: DIR/OE logic allows dynamic reconfiguration of data path polarity; Ioff protects SoC during module power cycling. |
Use Scenario: Providing isolated, glitch-free signal routing between DUT interface connectors and 3.3-V test ASIC in automated test equipment. IC Role / Device Role / Timing Role: High-speed 3-state buffer enabling multiplexed access to shared test bus resources. Use Value: 3.7-ns propagation delay meets sub-10-ns timing budgets; distributed VCC/GND pins suppress crosstalk in multi-channel test fixtures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit bus transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC16245ADGGR | Lower drive (24 mA sink), no 5-V tolerant inputs, requires 3.3-V-only environment. | Suitable only for pure 3.3-V systems; lacks mixed-mode I/O capability. | Select when cost sensitivity outweighs 5-V interoperability needs and bus loading is light. |
| SN74ALVCH16245DGGR | Higher speed (tPD ≤ 2.8 ns), same 3.3-V supply, but no bus-hold and weaker Ioff spec (±10 µA). | Better for ultra-low-latency paths but requires external biasing and offers reduced hot-swap robustness. | Prefer when propagation delay is critical and system design includes dedicated pull resistors and controlled insertion sequencing. |
Compared with SN74LVTH16245ADGGR, SN74LVC16245ADGGR trades 5-V I/O tolerance for lower power and cost, while SN74ALVCH16245DGGR prioritizes speed over bus-hold and hot-insertion safety - making SN74LVTH16245ADGGR optimal for ruggedized industrial interfaces requiring mixed-voltage resilience and zero-BOM biasing.
Availability
SN74LVTH16245ADGGR is available at Aetrix Electronics and suitable for industrial backplane interfaces, memory expansion subsystems, communications module data bridges, and test equipment signal conditioning requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for SN74LVTH16245ADGGR 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 logic solutions, with decades of expertise in high-reliability interface ICs for industrial and automotive markets.
The SN74LVTH16245ADGGR belongs to TI's Widebus™ family of advanced bus interface devices, engineered specifically for robust, low-noise, mixed-voltage data transfer in mission-critical industrial control and communications infrastructure.
FAQ
What is the maximum operating voltage for SN74LVTH16245ADGGR?
The SN74LVTH16245ADGGR has an absolute maximum VCC rating of 4.6 V, but its recommended operating supply range is 2.7 V to 3.6 V. Input voltages up to 5.5 V are permitted on A/B-port pins, and output pins tolerate up to 7 V in high-impedance or power-off states - enabling safe interfacing with 5-V systems while powered from 3.3 V. Exceeding 3.6 V on VCC risks parametric degradation and is not guaranteed by TI's specifications.
Does SN74LVTH16245ADGGR support hot-plug operation?
Yes, SN74LVTH16245ADGGR supports hot insertion via two integrated features: Ioff circuitry disables outputs when VCC = 0 V (limiting leakage to ±100 µA), and power-up 3-state ensures outputs remain high-impedance until VCC exceeds 1.5 V. These mechanisms prevent damaging current backflow and bus contention during live card replacement - validated per TI's ABT process and JESD78 latch-up testing (>500 mA).
Can SN74LVTH16245ADGGR replace SN74LVTH16244ADGGR in a design?
No - SN74LVTH16245ADGGR is a transceiver (bidirectional), while SN74LVTH16244ADGGR is a unidirectional buffer. Their pinouts differ significantly: SN74LVTH16245ADGGR uses DIR/OE controls per 8-bit section and shares I/O pins across A/B ports, whereas SN74LVTH16244ADGGR has separate input and output banks with no direction logic. Direct substitution would require PCB redesign and firmware changes to manage data flow directionality.
What is the purpose of bus-hold circuitry in SN74LVTH16245ADGGR?
The bus-hold feature in SN74LVTH16245ADGGR actively maintains unused or undriven A/B-port inputs at their last-valid logic state using weak feedback transistors (±750 µA max hold current). This eliminates the need for external pullup/pulldown resistors, reducing BOM cost and PCB space - especially valuable in sparsely populated backplane slots or during debug modes where signals may float.
Is SN74LVTH16245ADGGR pin-compatible with other package variants like SN74LVTH16245ADGVR?
Yes - SN74LVTH16245ADGGR (TSSOP-48) and SN74LVTH16245ADGVR (TVSOP-48) share identical pinout, electrical specifications, and functional behavior. Both use the same 48-pin top-side marking "LVTH16245A" and support identical DIR/OE control logic, drive strength, and timing. Mechanical differences (TVSOP is thinner and narrower) allow drop-in replacement where board height and footprint clearance permit.
SN74LVTH16245ADGGR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVTH
- Package/Case:
- 48-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:
- 48-TSSOP
SN74LVTH16245ADGGR FAQ
1.How can I place an order for SN74LVTH16245ADGGR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVTH16245ADGGR 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 SN74LVTH16245ADGGR reliable?
The price and inventory of SN74LVTH16245ADGGR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVTH16245ADGGR is usually 5 days.
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4.How is shipping managed for SN74LVTH16245ADGGR?
SN74LVTH16245ADGGR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LVTH16245ADGGR 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 SN74LVTH16245ADGGR?
For technical support, including SN74LVTH16245ADGGR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVTH16245ADGGR requirements.
6.How does Aetrix verify that SN74LVTH16245ADGGR is sourced from the original manufacturer or authorized distributors?
All SN74LVTH16245ADGGR 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 SN74LVTH16245ADGGR meets industry standards.
7.What is the process for return or replacement of SN74LVTH16245ADGGR?
All SN74LVTH16245ADGGR units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVTH16245ADGGR, 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 SN74LVTH16245ADGGR part is unused and in its original packaging.
Return procedure for SN74LVTH16245ADGGR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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