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Texas Instruments SN74LVT16245BZQLR
- Part No.:
- SN74LVT16245BZQLR
- Manufacturer:
- Texas Instruments
- Package:
- 56-VFBGA
- Datasheet:
-
SN74LVT16245BZQLR.pdf
- Description:
- IC TXRX NON-INVERT 3.6V 56BGA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SN74LVT16245BZQLR 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 Ioff and power-up 3-state support for hot insertion, distributed VCC/GND pins to suppress switching noise, and operates across –55°C to 125°C.
For engineers reviewing the SN74LVT16245BZQLR datasheet, SN74LVT16245BZQLR pinout, SN74LVT16245BZQLR application, or SN74LVT16245BZQLR equivalent, key selection considerations include its 56-ball VFBGA (ZQL) package, ±100 µA Ioff at VCC = 0, 3.3-V supply with 2.7–3.6-V operation range, and dual-directional 16-bit bus isolation capability in mixed-voltage environments.
Technical Context
The SN74LVT16245BZQLR implements two independent 8-bit transceiver sections, each controlled by dedicated DIR (direction) and OE (output enable) inputs. Its ABT BiCMOS architecture enables TTL-level compatibility on A/B ports while operating from a 3.3-V supply, supporting true mixed-mode signaling - 5-V-tolerant inputs/outputs with 3.3-V VCC.
Power sequencing is robust: below 1.5 V, outputs enter high-impedance; above that threshold, OE must be pulled up to ensure isolation. The device integrates distributed power/ground pins, flow-through pin mapping, and latch-up immunity >100 mA per JESD 78 Class II.
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 |
| IOL / IOH | 64 mA / –32 mA - drives standard TTL loads directly; sufficient for backplane or board-level bus termination |
| tPLH / tPHL | 2.3 ns / 2.1 ns (typ, VCC = 3.3 V) - enables high-speed synchronous data transfers up to ~200 MHz system clock domains |
| Ioff Current | ±100 µA at VCC = 0 - prevents damaging backflow during hot-swap or partial-power-down scenarios |
| VI Input Range | –0.5 V to 5.5 V - accepts 5-V logic levels safely while powered from 3.3 V, eliminating level-shifter need |
| θJA Thermal Impedance | 42 °C/W (ZQL package) - enables stable operation under sustained 16-bit bus switching at full load without external heatsinking |
| Operating Temperature | –55°C to +125°C - qualified for extended industrial, avionics, and under-hood automotive subsystems |
Pinout & Package
VFBGA-56 (ZQL) package: 7×8 ball array, 0.5-mm pitch, 5.5-mm × 4.5-mm body, 1.0-mm max height, RoHS-compliant NiPdAu ball finish, MSL Level-3 (260°C peak reflow).
| 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; asynchronous, no internal latching |
| 1OE, 2OE | Output enable input (per 8-bit section) | Active-LOW: drives outputs when LOW; HIGH places both A/B ports in high-Z state for bus isolation |
| A1–A8, B1–B8 (x2) | Bidirectional data I/O terminals | True 5-V-tolerant I/Os - accept and drive 5-V signals while VCC = 3.3 V; always active (no auto-3-state) |
| VCC, GND (x8 total) | Distributed power/ground connections | Minimizes simultaneous switching noise (SSN); enables clean signal integrity on dense PCB layouts |
| NC (balls A1–A4, K2–K4) | No internal connection | Unused balls - must be left unconnected; not for thermal pad or grounding |
Key Features
| Feature | Design Value |
|---|---|
| Hot-insertion support | Ioff and power-up 3-state circuitry disable outputs during power transitions, preventing bus contention in live backplanes |
| Mixed-mode voltage interface | 5-V-tolerant I/Os with 3.3-V VCC eliminate external level shifters in 3.3/5-V system interconnects |
| Flow-through pinout | Input-to-output signal path alignment (e.g., A1→B1, A2→B2) simplifies layer routing and reduces trace skew on multilayer PCBs |
| Low ground bounce | VOLP < 0.8 V at VCC = 3.3 V ensures reliable low-level recognition even during heavy 16-bit switching |
| Latch-up immunity | Exceeds 100 mA per JESD 78 Class II - withstands transient overcurrent events in noisy industrial environments |
Applications
| Industrial PLC Backplane Interface | Automotive ADAS Sensor Hub |
|---|---|
Use Scenario: Interfacing legacy 5-V I/O modules to a modern 3.3-V FPGA-based controller in programmable logic controllers. IC Role / Device Role / Timing Role: Bidirectional bus transceiver enabling real-time status/data exchange between voltage-domain-isolated subsystems. Use Value: Eliminates discrete level shifters; supports hot-swap maintenance without system shutdown; handles 16-bit parallel diagnostics streams reliably. | Use Scenario: Aggregating camera, radar, and ultrasonic sensor data onto a central domain controller in autonomous driving systems. IC Role / Device Role / Timing Role: Voltage-translating transceiver isolating sensor-side 5-V interfaces from 3.3-V processing SoC buses. Use Value: Maintains signal integrity across wide temperature range (–40°C to 125°C); Ioff prevents current leakage during sensor sleep modes. |
| Avionics Data Concentrator | Test Equipment Digital I/O Module |
Use Scenario: Consolidating ARINC 429-compatible peripheral signals into a centralized flight management unit using mixed-voltage architecture. IC Role / Device Role / Timing Role: High-reliability bus buffer providing galvanic isolation via voltage translation and output disable control. Use Value: Qualified for –55°C to +125°C operation; latch-up immunity meets DO-160 lightning-induced transient requirements. | Use Scenario: Configurable digital pattern generator/analyser card interfacing with DUTs operating at either 3.3-V or 5-V logic levels. IC Role / Device Role / Timing Role: Reconfigurable 16-bit transceiver enabling bidirectional stimulus/response on automated test fixtures. Use Value: Single-component solution replaces multiple discrete translators; fast propagation delay (<2.5 ns) supports >200-MHz test vector rates. |
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 |
|---|---|---|---|
| SN74LVC16245A | Lower drive strength (24 mA sink/source), 1.65–3.6-V VCC range, no 5-V tolerance on I/Os | Suitable only for pure 3.3-V or lower-voltage systems; cannot interface to 5-V peripherals | Select when cost and power efficiency outweigh mixed-voltage needs and drive requirements are modest |
| SN74ALVCH16245 | Higher speed (tPLH/tPHL ≈ 1.8 ns), 1.65–3.6-V VCC, 5-V tolerant I/Os, but no Ioff or guaranteed hot-swap support | Used in high-speed computing backplanes where thermal/power constraints dominate over field-serviceability | Choose for maximum throughput in benign environments; avoid where live insertion or partial power-down is required |
Compared with SN74LVC16245A and SN74ALVCH16245, the SN74LVT16245BZQLR uniquely combines 5-V I/O tolerance, Ioff-enabled hot insertion, and extended temperature operation - making it the only option qualified for ruggedized mixed-voltage industrial and aerospace data routing.
Availability
SN74LVT16245BZQLR is available at Aetrix Electronics and suitable for industrial PLC backplanes, automotive ADAS sensor hubs, avionics data concentrators, and test equipment digital I/O modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for SN74LVT16245BZQLR 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 heritage in high-reliability logic and interface solutions.
The SN74LVT16245BZQLR belongs to TI's Widebus™ family of advanced bus interface devices, engineered specifically for robust, mixed-voltage, high-speed data routing in mission-critical industrial, automotive, and aerospace systems.
FAQ
What is the maximum operating temperature range for the SN74LVT16245BZQLR?
The SN74LVT16245BZQLR is rated for operation from –55°C to +125°C. This extended temperature range is validated per TI's production testing and qualifies the device for use in harsh environments such as engine compartments, avionics bays, and industrial control enclosures where ambient temperatures exceed standard commercial limits. The ZQL package's thermal performance (θJA = 42 °C/W) sustains this rating under full 16-bit switching load.
Does the SN74LVT16245BZQLR support hot insertion, and how is it implemented?
Yes, the SN74LVT16245BZQLR supports hot insertion via two integrated features: Ioff circuitry disables outputs when VCC = 0, preventing backflow current, and power-up 3-state ensures outputs remain high-impedance during power ramp-up/down. These functions are inherent to the ABT process and require no external components. For reliable operation, OE should be tied to VCC through a pullup resistor when VCC exceeds 1.5 V.
Can the SN74LVT16245BZQLR interface between 3.3-V and 5-V logic systems without external level shifters?
Yes, the SN74LVT16245BZQLR supports mixed-mode signaling: its A and B port I/Os tolerate 5-V inputs and drive 5-V logic levels while operating from a 3.3-V supply. This is achieved through ABT BiCMOS design and verified across VI = –0.5 V to 5.5 V and VO = –0.5 V to 7 V absolute ratings. No external level shifters are needed for interoperability with legacy 5-V peripherals.
What is the pin configuration and ball-out mapping for the SN74LVT16245BZQLR?
The SN74LVT16245BZQLR uses a 56-ball VFBGA (ZQL) package with 7×8 grid, 0.5-mm pitch. Key assignments include DIR/OE controls on corners (A1=1DIR, K11=2DIR, A6=1OE, K6=2OE), dual 8-bit I/O banks (A1–A8/B1–B8 per side), eight distributed VCC/GND balls, and four NC balls (A2–A4, K2–K4). Full mapping matches TI's SCBS715E datasheet Terminal Assignments table for ZQL.
How does the SN74LVT16245BZQLR handle power sequencing in multi-rail systems?
When VCC drops below 1.5 V, the SN74LVT16245BZQLR automatically enters high-impedance state. Above 1.5 V, OE must be actively controlled - TI recommends tying OE to VCC via a pullup resistor sized to sink ≤100 µA. This ensures deterministic isolation during brownout or staggered supply ramp-up. The device draws only 0.19 mA in disabled state, minimizing standby current impact.
SN74LVT16245BZQLR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVT
- Package/Case:
- 56-VFBGA
- 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-BGA Microstar Junior (7x4.5)
SN74LVT16245BZQLR FAQ
1.How can I place an order for SN74LVT16245BZQLR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVT16245BZQLR 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 SN74LVT16245BZQLR reliable?
The price and inventory of SN74LVT16245BZQLR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVT16245BZQLR is usually 5 days.
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4.How is shipping managed for SN74LVT16245BZQLR?
SN74LVT16245BZQLR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LVT16245BZQLR 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 SN74LVT16245BZQLR?
For technical support, including SN74LVT16245BZQLR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVT16245BZQLR requirements.
6.How does Aetrix verify that SN74LVT16245BZQLR is sourced from the original manufacturer or authorized distributors?
All SN74LVT16245BZQLR 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 SN74LVT16245BZQLR meets industry standards.
7.What is the process for return or replacement of SN74LVT16245BZQLR?
All SN74LVT16245BZQLR units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVT16245BZQLR, 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 SN74LVT16245BZQLR part is unused and in its original packaging.
Return procedure for SN74LVT16245BZQLR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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