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Texas Instruments SN74LVTH16245ADLR
- Part No.:
- SN74LVTH16245ADLR
- Manufacturer:
- Texas Instruments
- Package:
- 48-BSSOP (0.295", 7.50mm Width)
- Datasheet:
-
SN74LVTH16245ADLR.pdf
- Description:
- IC TXRX NON-INVERT 3.6V 48SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,007
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Product details
Overview
SN74LVTH16245ADLR 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 across –40°C to 85°C with supply voltage down to 2.7 V.
For engineers reviewing the SN74LVTH16245ADLR datasheet, SN74LVTH16245ADLR pinout, SN74LVTH16245ADLR application, or SN74LVTH16245ADLR equivalent, this device is selected for mixed-voltage bus interfacing in industrial backplanes, memory expansion modules, and FPGA-to-ASIC communication where TTL-level compatibility, low ground bounce (<0.8 V), and power-up 3-state safety are critical.
Technical Context
The SN74LVTH16245ADLR implements an advanced BiCMOS (ABT) process optimized for 3.3-V operation while maintaining 5-V tolerant inputs and outputs. Its dual-octal architecture enables independent direction control per 8-bit port via DIR signals and output enable via OE, supporting A→B or B→A data flow or full isolation.
It integrates active bus-hold on all A/B-port inputs to eliminate external pull resistors, and includes Ioff and power-up 3-state logic that forces high-impedance outputs during power ramping or shutdown-critical for live-insertion systems. Distributed power/ground pins and flow-through pinout minimize switching noise and simplify PCB layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.7 V to 3.6 V - supports unregulated battery operation and ensures stable function across industrial supply variance. |
| IOL / IOH | 64 mA / –32 mA at VCC = 3.3 V - drives standard TTL loads without external buffers in mixed-mode environments. |
| tPLH / tPHL | 2.3 ns / 2.1 ns typical at VCC = 3.3 V, CL = 50 pF - enables high-speed bus bridging up to ~200 MHz effective throughput. |
| VIL / VIH | 0.8 V / 2.0 V - compatible with both 3.3-V LVTTL and legacy 5-V TTL logic thresholds. |
| Bus-Hold Current | ±75 µA minimum at VCC = 3.6 V - actively maintains valid logic state on floating inputs without external components. |
| IOFF Leakage | ±100 µA at VCC = 0 V - prevents damaging backflow current during hot-swap or partial-power-down scenarios. |
| VOLP (Ground Bounce) | <0.8 V at VCC = 3.3 V, TA = 25°C - reduces signal integrity risk in dense, high-switching digital systems. |
Pinout & Package
SN74LVTH16245ADLR uses a 48-pin SSOP (Shrink Small-Outline Package) with 0.635 mm pitch, JEDEC MO-153 compliant, body dimensions 12.6 mm × 6.2 mm × 1.75 mm max height. Pin 1 marked by notch or beveled corner; leads are gull-wing, NIPDAU-plated, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1DIR, 2DIR | Direction control input (per 8-bit port) | Low = B→A data flow; High = A→B data flow; determines active output port. |
| 1OE, 2OE | Output enable input (per 8-bit port) | Low = enables corresponding port outputs; High = forces 3-state (Hi-Z) on that port. |
| 1A1–1A8, 2A1–2A8 | A-port data inputs/outputs | Bidirectional I/Os tied to one system bus; always input-enabled, drive only when OE/DIR permit. |
| 1B1–1B8, 2B1–2B8 | B-port data inputs/outputs | Bidirectional I/Os tied to second system bus; same electrical behavior as A-port. |
| VCC | Power supply | Single 3.3-V supply with 12 distributed pins - reduces simultaneous switching noise and improves PDN stability. |
| GND | Ground reference | 12 dedicated ground pins interleaved with VCC - enables low-inductance return paths for each signal group. |
Key Features
| Feature | Design Value |
|---|---|
| Mixed-mode voltage interface | Accepts 0–5.5 V inputs and drives 5-V-tolerant outputs at 3.3-V VCC - eliminates level shifters in 3.3/5-V coexistence systems. |
| Hot-insertion support | Ioff and power-up 3-state ensure zero-current backflow and automatic Hi-Z during power sequencing - required for modular backplane designs. |
| Integrated bus-hold | Active hold on all 32 data I/Os maintains valid logic state without external resistors - reduces BOM count and board space. |
| Flow-through pinout | A/B ports arranged linearly (A1–A8, B1–B8 per side) - enables straight PCB trace routing and minimizes crosstalk in parallel buses. |
| Distributed power delivery | 12 VCC and 12 GND pins placed across package perimeter - lowers impedance of power distribution network and suppresses ground bounce. |
Applications
| Industrial Backplane Interface | FPGA-to-ASIC Data Bridge |
|---|---|
Use Scenario: Interfacing a 3.3-V FPGA I/O bank with a legacy 5-V ASIC on a shared backplane. IC Role / Device Role / Timing Role: Bidirectional level-translating transceiver managing A→B and B→A data flow under independent DIR/OE control. Use Value: Eliminates discrete level shifters while ensuring sub-3 ns propagation delay and robust noise immunity via distributed VCC/GND. |
Use Scenario: Expanding memory-mapped peripheral access between a Xilinx Artix-7 FPGA and multiple 5-V SRAM chips. IC Role / Device Role / Timing Role: 16-bit bus buffer enabling synchronous read/write handshaking with precise timing margins. Use Value: Bus-hold prevents floating address/data lines during FPGA configuration gaps; Ioff protects SRAM during partial reconfiguration. |
| Modular PLC I/O Carrier | Test Equipment Signal Routing |
Use Scenario: Hot-pluggable I/O module in a programmable logic controller chassis requiring live insertion into powered backplane. IC Role / Device Role / Timing Role: Isolation and translation layer between module-local 3.3-V logic and chassis-wide 5-V control bus. Use Value: Power-up 3-state prevents bus contention during insertion; ±100 µA Ioff limits fault current to safe levels. |
Use Scenario: Reconfigurable signal path in automated test equipment connecting DUT interfaces to multiple instrument channels. IC Role / Device Role / Timing Role: Programmable bus switch enabling dynamic routing of 16-bit parallel data streams between sources and sinks. Use Value: Independent OE/DIR per octal section allows granular channel enable/disable without affecting adjacent lanes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC16245ADLR | Lower drive strength (24 mA sink/source), no bus-hold, no Ioff, 1.65–3.6 V VCC range. | Suitable for cost-sensitive, lower-noise 3.3-V-only systems without hot-swap or floating-input requirements. | Select when mixed-voltage tolerance and live-insertion are not needed; avoid if interfacing 5-V peripherals. |
| SN74ALVCH16245DLR | Higher speed (tPD ≈ 1.9 ns), 1.65–3.6 V VCC, bus-hold and Ioff included, but no 5-V input tolerance. | Optimized for high-speed 3.3-V-only buses (e.g., DDR control lines), not mixed-voltage domains. | Choose for maximum throughput in single-supply 3.3-V systems; verify 5-V signal compatibility is unnecessary. |
Compared with SN74LVC16245ADLR and SN74ALVCH16245DLR, the SN74LVTH16245ADLR uniquely delivers 5-V input tolerance, robust hot-swap capability, and bus-hold in a single 3.3-V device-making it irreplaceable in legacy-system upgrades and modular industrial hardware.
Availability
SN74LVTH16245ADLR is available at Aetrix Electronics and suitable for industrial backplanes, FPGA-to-ASIC bridges, and modular PLC carrier designs requiring stable component supply, long-term lifecycle support, and guaranteed RoHS-compliant sourcing.
Supply support for SN74LVTH16245ADLR 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 over 50 years of innovation in high-reliability interface ICs.
The SN74LVTH16245ADLR belongs to TI's Widebus™ family of ABT transceivers, engineered specifically for robust mixed-voltage bus interfacing in industrial, telecom, and computing infrastructure where signal integrity and system-level safety are paramount.
FAQ
What is the operating temperature range for SN74LVTH16245ADLR?
The SN74LVTH16245ADLR is rated for industrial operation from –40°C to +85°C. This range is validated per TI's production testing and aligns with its SSOP (DL) package thermal performance (θJA = 63°C/W). Operation outside this range may result in undefined timing or increased leakage; derating is required above 85°C.
Does SN74LVTH16245ADLR support 5-V inputs while powered at 3.3 V?
Yes, SN74LVTH16245ADLR supports 5-V-tolerant inputs with VCC = 3.3 V. Its input voltage range extends to 5.5 V, and absolute maximum rating allows up to 7 V transient exposure. This enables direct connection to 5-V TTL buses without external level-shifting circuitry.
How does the bus-hold feature work on SN74LVTH16245ADLR?
The SN74LVTH16245ADLR integrates active bus-hold circuitry on all 32 A/B-port data lines. When an input floats, the internal feedback network applies ±75 µA (min) holding current to maintain the last-valid logic state-eliminating need for external pullup/pulldown resistors and reducing board complexity.
Can SN74LVTH16245ADLR be used in hot-swap applications?
Yes, SN74LVTH16245ADLR is explicitly designed for hot insertion. Its Ioff circuitry disables outputs when VCC = 0 V, preventing backflow current, and power-up 3-state ensures Hi-Z outputs during power ramping - both features are production-tested and documented in TI's SCBS143R datasheet.
What package type and lead finish does SN74LVTH16245ADLR use?
SN74LVTH16245ADLR uses a 48-pin SSOP (DL) package with NIPDAU lead finish, RoHS-compliant, moisture sensitivity level (MSL) 1, peak reflow temperature 260°C. It ships in 1000-unit tape-and-reel format (reel width 32.4 mm, quadrant Q1).
SN74LVTH16245ADLR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVTH
- Package/Case:
- 48-BSSOP (0.295", 7.50mm 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-SSOP
SN74LVTH16245ADLR FAQ
1.How can I place an order for SN74LVTH16245ADLR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVTH16245ADLR 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 SN74LVTH16245ADLR reliable?
The price and inventory of SN74LVTH16245ADLR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVTH16245ADLR is usually 5 days.
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SN74LVTH16245ADLR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LVTH16245ADLR 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 SN74LVTH16245ADLR?
For technical support, including SN74LVTH16245ADLR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVTH16245ADLR requirements.
6.How does Aetrix verify that SN74LVTH16245ADLR is sourced from the original manufacturer or authorized distributors?
All SN74LVTH16245ADLR 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 SN74LVTH16245ADLR meets industry standards.
7.What is the process for return or replacement of SN74LVTH16245ADLR?
All SN74LVTH16245ADLR units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVTH16245ADLR, 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 SN74LVTH16245ADLR part is unused and in its original packaging.
Return procedure for SN74LVTH16245ADLR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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