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Texas Instruments SN74ALVTHR16245KR
- Part No.:
- SN74ALVTHR16245KR
- Manufacturer:
- Texas Instruments
- Package:
- 56-VFBGA
- Datasheet:
-
SN74ALVTHR16245KR.pdf
- Description:
- IC TXRX NON-INVERT 3.6V 56BGA
- Quantity:
- Payment:
- Shipping:
Inventory:4,747
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Product details
Overview
SN74ALVTHR16245KR from Texas Instruments is a 16-bit noninverting bus transceiver with 3-state outputs, designed for 2.5-V/3.3-V VCC operation and mixed-mode 5-V interface compatibility. It features dual-octal flow-through architecture, integrated bus-hold circuitry, Ioff-enabled hot insertion, and on-die 30-Ω series output resistors - deployed in high-density industrial backplanes and FPGA-to-ASIC interconnects.
For engineers reviewing the SN74ALVTHR16245KR datasheet, SN74ALVTHR16245KR pinout, SN74ALVTHR16245KR application, or SN74ALVTHR16245KR equivalent, key selection criteria include its –55°C to 125°C extended temperature range, VFBGA (GQL) 48-pin package, 3.3-V drive strength (–12/12 mA), power-up 3-state behavior, and bus-hold current specifications (IBHL = 75 µA at 3 V).
Technical Context
This device implements two independent 8-bit bidirectional transceiver channels, each controlled by dedicated DIR (direction) and OE (output enable) inputs. Data flow is strictly noninverting: A→B when DIR = HIGH, B→A when DIR = LOW, with full isolation when OE = HIGH.
Its Advanced BiCMOS Technology (ABT) enables simultaneous 2.5-V/3.3-V core operation while tolerating 5-V inputs/outputs. The integrated bus-hold circuit eliminates external pullup/pulldown resistors, and Ioff functionality blocks reverse current during partial power-down - critical for live-insertion systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.3 V to 3.6 V - supports both 2.5-V and 3.3-V system rails without level shifters |
| Drive Strength | –12 mA / +12 mA at 3.3 V - sufficient to drive 50-Ω transmission lines directly |
| Operating Temp | –55°C to +125°C - qualified for extended-temperature industrial and aerospace applications |
| Bus-Hold Current | IBHL = 75 µA (low), IBHH = –75 µA (high) at 3 V - actively holds floating inputs without external resistors |
| Propagation Delay | tPLH/tPHL ≤ 3.9 ns (CL = 50 pF, VCC = 3.3 V) - enables >200-MHz bus toggle rates in point-to-point links |
| Output Series R | 30 Ω integrated - suppresses overshoot/undershoot; eliminates need for external termination resistors |
| Ioff Leakage | ±100 µA at VCC = 0 V - prevents damaging backflow during hot-swap or partial power-down sequences |
Pinout & Package
VFBGA package (GQL), 48-pin, 5.5 mm × 6.0 mm, 0.5-mm pitch, bottom-side ball array. Designed for high-density PCB layouts with distributed VCC/GND balls to minimize switching noise.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1DIR, 2DIR | Direction control input (per 8-bit section) | Active-HIGH logic selects A→B data flow; LOW enables B→A - enables independent bidirectional control of each octal channel |
| 1OE, 2OE | Output-enable input (per 8-bit section) | Active-LOW enables outputs; HIGH forces all associated outputs into high-impedance - provides per-channel isolation |
| A1–A8, B1–B8 (x2) | Transceiver I/O ports | 16 bidirectional data lines split into two 8-bit groups; each port pair shares DIR/OE - supports dual-octal or unified 16-bit operation |
| VCC, GND (x8 total) | Power and ground terminals | Distributed across package corners and center - reduces simultaneous switching noise and improves signal integrity at high speed |
| NC (pins A1–A5, K1–K5) | No internal connection | Reserved for mechanical stability and future family expansion - must remain unconnected on PCB |
Key Features
| Feature | Design Value |
|---|---|
| Hot-insertion support | Ioff and power-up 3-state ensure zero-current backflow and glitch-free enable during live board insertion |
| Integrated bus-hold | Eliminates external pullup/pulldown resistors on all A/B data inputs - reduces BOM count and layout area |
| On-die 30-Ω series termination | Reduces ringing and EMI on PCB traces - no external series resistors required for impedance matching |
| Flow-through pinout | Input and output pins aligned across package edges - simplifies layer routing and minimizes trace skew in parallel buses |
| Mixed-voltage interface | Accepts 5-V inputs while operating at 2.5 V/3.3 V VCC - bridges legacy 5-V logic to modern low-voltage FPGAs/ASICs |
Applications
| Industrial Backplane Interconnect | FPGA-to-ASIC Data Bridge |
|---|---|
Use Scenario: High-speed bidirectional data transfer between modular PLC I/O cards and central controller over rigid backplane. IC Role / Device Role / Timing Role: Level-shifting, direction-controlled bus transceiver enabling synchronous 16-bit parallel communication with hot-swap capability. Use Value: Ioff and power-up 3-state prevent bus contention during card insertion; bus-hold maintains valid logic on disconnected slots. |
Use Scenario: Interface between Xilinx Artix-7 FPGA (3.3-V I/O) and custom ASIC (5-V tolerant inputs) in test equipment. IC Role / Device Role / Timing Role: Bidirectional voltage-tolerant transceiver managing address/data strobes with sub-4-ns propagation delay. Use Value: Mixed-mode operation allows direct 5-V ASIC interfacing without external level shifters; 30-Ω series resistors dampen edge-induced reflections. |
| Avionics Data Concentrator | Ruggedized Communication Module |
Use Scenario: Data aggregation node in flight control subsystem requiring operation from –55°C to +125°C under vibration and thermal cycling. IC Role / Device Role / Timing Role: Temperature-hardened 16-bit transceiver isolating sensor bus from processor bus with deterministic timing. Use Value: Extended temperature rating and JESD 78 Class II latch-up immunity meet DO-160 environmental compliance requirements. |
Use Scenario: Secure wireless gateway unit deployed in oil-field telemetry enclosures exposed to wide ambient swings and ESD events. IC Role / Device Role / Timing Role: Isolation and signal conditioning element in RS-485/UART bridging path with robust ESD protection. Use Value: 2000-V HBM ESD rating and distributed VCC/GND pins maintain reliability in high-noise, high-static environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74ALVCH16245KR | No Ioff; bus-hold disabled by default; lower drive (–8/8 mA); same GQL package | Lacks hot-insertion support; requires external pullups if bus-hold needed; suitable only for static-insertion systems | Select when cost sensitivity outweighs hot-swap requirement and bus-hold is not needed |
| SN74LVC16245ADGGR | TSSOP-48 (DGG); rated –40°C to +85°C; no bus-hold; 3.3-V only; higher ICC (5 mA typical) | Not qualified for extended temperature; lacks bus-hold and Ioff - unsuitable for ruggedized or hot-plug designs | Choose only for commercial-grade, space-constrained PCBs where extended temp and robustness are not required |
Compared with SN74ALVCHR16245KR, SN74ALVCH16245KR omits Ioff and configurable bus-hold, reducing system-level fault tolerance; SN74LVC16245ADGGR trades temperature range and robustness for lower cost and wider distributor availability - neither matches the SN74ALVTHR16245KR's combination of extended temp, hot-swap readiness, and integrated signal integrity features.
Availability
SN74ALVTHR16245KR is available at Aetrix Electronics and suitable for industrial backplanes, avionics data concentrators, and ruggedized communication modules requiring stable component supply across extended temperature and long product lifecycles.
Supply support for SN74ALVTHR16245KR 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 heritage in high-reliability interface ICs.
The ALVTHR family was engineered specifically for robust, mixed-voltage, hot-pluggable bus interfaces in mission-critical industrial and aerospace systems - emphasizing latch-up immunity, ESD resilience, and seamless voltage translation.
FAQ
What is the maximum operating temperature for SN74ALVTHR16245KR?
The SN74ALVTHR16245KR is rated for operation from –55°C to +125°C, making it suitable for extended-temperature applications such as avionics, downhole drilling electronics, and military vehicle control systems. This rating is validated per JEDEC JESD22-A108 and confirmed in the absolute maximum ratings table of the SCES075D datasheet.
Does SN74ALVTHR16245KR support hot insertion?
Yes, SN74ALVTHR16245KR supports hot insertion via two complementary features: Ioff circuitry disables outputs when VCC = 0 V (limiting reverse current to ±100 µA), and power-up 3-state ensures outputs remain high-impedance until VCC exceeds 1.2 V. These functions are explicitly verified in the functional description and electrical characteristics sections of the datasheet.
Can SN74ALVTHR16245KR interface with 5-V logic while running at 3.3-V VCC?
Yes, SN74ALVTHR16245KR accepts input voltages up to 5.5 V and drives outputs compatible with 5-V TTL levels while operating at 3.3-V VCC. This mixed-mode capability is documented in the "Recommended Operating Conditions" tables and explicitly stated in the device description as enabling "TTL interface to a 5-V system environment."
What package type is used for SN74ALVTHR16245KR?
SN74ALVTHR16245KR uses the VFBGA-48 (GQL) package: 5.5 mm × 6.0 mm body, 0.5-mm ball pitch, 48 I/O balls arranged in a perimeter+center array. Mechanical dimensions, solder mask recommendations, and land pattern guidelines are published in TI's MTSS003D and DGG0048A documentation.
How does the bus-hold feature work on SN74ALVTHR16245KR?
The bus-hold circuit on SN74ALVTHR16245KR actively maintains valid logic states on unused A/B data inputs using weak feedback transistors. At 3.3-V VCC, it sources –75 µA (IBHH) to hold HIGH or sinks +75 µA (IBHL) to hold LOW - eliminating need for external resistors. This behavior is characterized in the electrical specs tables and described in the "description/ordering information" section.
SN74ALVTHR16245KR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74ALVTHR
- 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:
- 12mA, 12mA
- Voltage - Supply:
- 2.3V ~ 2.7V, 3V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 56-BGA Microstar Junior (7x4.5)
SN74ALVTHR16245KR FAQ
1.How can I place an order for SN74ALVTHR16245KR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74ALVTHR16245KR 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 SN74ALVTHR16245KR reliable?
The price and inventory of SN74ALVTHR16245KR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74ALVTHR16245KR is usually 5 days.
3.What payment methods are accepted for SN74ALVTHR16245KR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74ALVTHR16245KR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74ALVTHR16245KR?
SN74ALVTHR16245KR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74ALVTHR16245KR 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 SN74ALVTHR16245KR?
For technical support, including SN74ALVTHR16245KR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74ALVTHR16245KR requirements.
6.How does Aetrix verify that SN74ALVTHR16245KR is sourced from the original manufacturer or authorized distributors?
All SN74ALVTHR16245KR 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 SN74ALVTHR16245KR meets industry standards.
7.What is the process for return or replacement of SN74ALVTHR16245KR?
All SN74ALVTHR16245KR units undergo pre-shipment inspection (PSI). If there is an issue with SN74ALVTHR16245KR, 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 SN74ALVTHR16245KR part is unused and in its original packaging.
Return procedure for SN74ALVTHR16245KR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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