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Texas Instruments SN74LVC16245AZQLR
- Part No.:
- SN74LVC16245AZQLR
- Manufacturer:
- Texas Instruments
- Package:
- 56-VFBGA
- Datasheet:
-
SN74LVC16245AZQLR.pdf
- Description:
- IC TXRX NON-INVERT 3.6V 56BGA
- Quantity:
- Payment:
- Shipping:
Inventory:4,380
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Product details
Overview
SN74LVC16245AZQLR from Texas Instruments is a 16-bit dual-octal noninverting bus transceiver with 3-state outputs, designed for asynchronous bidirectional data transfer between 1.65–3.6 V buses. It supports mixed-mode signal operation (5.5 V-tolerant inputs at 3.3 V VCC), delivers max 4 ns propagation delay at 3.3 V, and features Ioff for live insertion and partial-power-down protection - used in printer peripheral interfaces and industrial backplane data routing.
For engineers reviewing the SN74LVC16245AZQLR datasheet, SN74LVC16245AZQLR pinout, SN74LVC16245AZQLR application, or SN74LVC16245AZQLR equivalent, key selection criteria include 3.3 V/5 V level translation capability, dual 8-bit directional control (1DIR/2DIR), independent output enable (1OE/2OE), and verified 48-pin ZQL package compatibility with TSSOP footprint constraints.
Technical Context
The SN74LVC16245AZQLR implements two independent 8-bit transceiver channels, each with dedicated direction (DIR) and output-enable (OE) controls, enabling simultaneous A→B and B→A data flow under separate logic supervision. Its CMOS design ensures balanced drive strength (±24 mA at 3 V) and rail-to-rail 3.3 V-compatible I/O while accepting up to 5.5 V on all inputs regardless of VCC.
It operates across –40°C to +125°C with guaranteed tpd ≤5.0 ns (VCC = 3.3 V, –40°C to 125°C), supports Ioff-based back-drive protection during power sequencing, and maintains high-impedance isolation when OE is high - critical for hot-swap-capable industrial backplanes and modular controller interconnects.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 1.65 V to 3.6 V - enables direct integration into 3.3 V systems without level-shifting circuitry |
| Input Voltage Tolerance | Up to 5.5 V - allows safe interfacing with legacy 5 V logic or mixed-voltage subsystems |
| Max Propagation Delay | 4.0 ns at 3.3 V (–40°C to 85°C) - supports >100 MHz bus timing margins in high-speed peripherals |
| Output Drive Strength | ±24 mA at VCC = 3 V - drives standard 50 Ω transmission lines or multiple CMOS loads without buffering |
| Ioff Current | ±10 µA at VCC = 0 V - prevents damaging back-current during board hot-plug or partial power-down sequences |
| Operating Temperature | –40°C to +125°C - qualified for industrial motor drives and telecom infrastructure environments |
| ESD Rating | 2000 V HBM, 1000 V CDM - meets JEDEC JESD22-A114/A115/C101 for robust handling in manufacturing |
Pinout & Package
SN74LVC16245AZQLR is packaged in a 56-ball ZQL (microstar BGA) package measuring 7.0 mm × 4.5 mm × 1.0 mm, optimized for high-density PCB layouts and thermal performance in space-constrained embedded modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1DIR, 2DIR | Direction control input | Determines data flow direction per 8-bit channel (L = B→A, H = A→B) |
| 1OE, 2OE | Output enable input | Active-low control: L enables transceiver, H places outputs in high-impedance state |
| 1A1–1A8, 2A1–2A8 | Port A I/O terminals | First and second 8-bit data bus interface (A-side); 5.5 V tolerant |
| 1B1–1B8, 2B1–2B8 | Port B I/O terminals | First and second 8-bit data bus interface (B-side); 5.5 V tolerant |
| VCC (pins 3,4,11,12,19,20,27,28,35,36,43,44) | Power supply | Twelve distributed VCC pins reduce IR drop and improve noise immunity across wide bus |
| GND (pins 2,5,6,10,13,14,17,18,21,22,25,26,29,30,33,34,37,38,41,42,45,46) | Ground reference | Twenty-two GND balls ensure low-inductance return paths for fast switching currents |
Key Features
| Feature | Design Value |
|---|---|
| Mixed-mode voltage translation | 5.5 V-tolerant inputs operate reliably with 3.3 V VCC - eliminates external level shifters in 3.3 V ↔ 5 V system bridges |
| Ioff partial-power-down support | Prevents current backflow when VCC = 0 V - enables safe live insertion into powered backplanes or hot-swappable modules |
| Low ground bounce (VOLP) | <0.8 V at VCC = 3.3 V - minimizes noise coupling into adjacent analog or RF sections during high-speed switching |
| Fast enable/disable timing | ten ≤6.5 ns, tdis ≤7.6 ns at 3.3 V - ensures clean bus arbitration and avoids metastability in multi-master systems |
| Rail-to-rail output swing | VOH ≥2.2 V, VOL ≤0.55 V at VCC = 3 V - guarantees full logic margin for downstream 3.3 V CMOS receivers |
Applications
| Printer Peripheral Interface | Industrial Backplane Data Routing |
|---|---|
Use Scenario: Bidirectional parallel data exchange between microcontroller and dot-matrix print head controller. IC Role / Device Role / Timing Role: SN74LVC16245AZQLR acts as a 16-bit direction-controlled bus buffer, isolating MCU I/O from noisy print head drivers while translating 3.3 V logic to 5 V stepper motor control signals. Use Value: Enables deterministic timing via sub-5 ns propagation delay and eliminates level-shifter components using native 5.5 V input tolerance. |
Use Scenario: Hot-swappable module communication on a 12-slot industrial PLC backplane operating at 3.3 V. IC Role / Device Role / Timing Role: SN74LVC16245AZQLR provides isolated, direction-governed data path between slot controller and field I/O module, with Ioff preventing backfeed during insertion/removal. Use Value: Ensures zero-bus-contamination during live module replacement and sustains signal integrity across 20 cm backplane traces. |
| Wearable Health Sensor Hub | Wireless Baseband Subsystem |
Use Scenario: Aggregating sensor data (ECG, SpO₂, accelerometer) from multiple 3.3 V analog front-ends into a low-power ARM Cortex-M4 host. IC Role / Device Role / Timing Role: SN74LVC16245AZQLR serves as a low-quiescent-current (20 µA ICC) bidirectional data bridge, synchronizing burst-mode sensor reads with host DMA transfers. Use Value: Reduces system power by eliminating always-on level translators and maintains timing predictability with <1 ns skew across all 16 bits. |
Use Scenario: Interfacing a 3.3 V FPGA baseband processor with legacy 5 V RF transceiver ICs in small-cell LTE infrastructure. IC Role / Device Role / Timing Role: SN74LVC16245AZQLR functions as a dual-channel voltage-aware transceiver, managing both control register writes (A→B) and IQ data streaming (B→A) with independent DIR/OE control. Use Value: Eliminates discrete MOSFET translators, reduces BOM count by 4+ components, and guarantees setup/hold compliance at 40 MHz DDR signaling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC16245ADGGR | TSSOP-48 package (12.5 × 6.1 mm); higher thermal resistance (RθJA = 67.1°C/W) vs ZQL's 42.6°C/W | Better suited for prototyping and manual assembly; less optimal for thermally constrained, high-density modules | Select SN74LVC16245ADGGR for breadboard evaluation or low-volume production where BGA rework is impractical |
| SN74AVC16245DGGR | Lower VCC range (1.2–3.6 V); faster tpd (≤2.8 ns at 3.3 V); no 5.5 V input tolerance | Optimized for ultra-low-voltage SoC interconnects, not mixed-voltage translation scenarios | Choose SN74AVC16245DGGR only when interfacing sub-1.8 V logic; avoid if 5 V legacy device compatibility is required |
Compared with SN74LVC16245ADGGR and SN74AVC16245DGGR, the SN74LVC16245AZQLR uniquely balances 5.5 V input tolerance, industrial temperature range, and micro-BGA footprint - making it the sole option for space-limited, mixed-voltage, hot-pluggable designs requiring guaranteed 125°C operation.
Availability
SN74LVC16245AZQLR is available at Aetrix Electronics and suitable for industrial backplane data routing, wireless baseband subsystems, and wearable health sensor hubs requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for SN74LVC16245AZQLR 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 over 50 years of innovation in industrial, automotive, and communications markets.
The SN74LVC16245AZQLR belongs to TI's Widebus™ family of high-speed, low-voltage bus interface devices - engineered specifically for robust, mixed-voltage data bridging in industrial automation, telecom infrastructure, and portable electronics.
FAQ
What is the maximum operating temperature for SN74LVC16245AZQLR?
The SN74LVC16245AZQLR is fully specified from –40°C to +125°C ambient temperature, with electrical characteristics validated across this full industrial range per JEDEC JESD84-A. This rating applies to the ZQL package variant and is confirmed in TI's SCES062Q datasheet Section 7.3. The device maintains tpd ≤5.0 ns and Ioff ≤±20 µA at +125°C, making it suitable for enclosed telecom chassis or motor drive enclosures.
Does SN74LVC16245AZQLR support 5 V logic interfacing?
Yes, SN74LVC16245AZQLR supports 5 V logic interfacing through its 5.5 V-tolerant inputs - all A and B port pins accept voltages up to 5.5 V regardless of VCC (1.65–3.6 V). This enables direct connection to 5 V microcontrollers or legacy peripherals without external level shifters. However, outputs swing only to VCC levels (e.g., 3.3 V), so downstream 5 V receivers require compatible input thresholds.
How does the Ioff feature function in SN74LVC16245AZQLR?
The Ioff feature in SN74LVC16245AZQLR disables all outputs and isolates input/output terminals when VCC = 0 V, limiting leakage current to ±10 µA (max) per pin. This prevents damaging back-current flow during hot-swap events or partial power-down states - critical for modular PLC backplanes or battery-backed systems where subsystems power up/down asynchronously. Ioff is inherent to the silicon process and requires no external circuitry.
What is the pin configuration for SN74LVC16245AZQLR?
SN74LVC16245AZQLR uses a 56-ball ZQL microstar BGA package with specific ball assignments: DIR/OE controls occupy corner positions (A1, K6), A/B port I/Os are arranged in interleaved banks (e.g., A1–A8 on rows B–E, B1–B8 on rows F–J), and twelve VCC plus twenty-two GND balls provide low-impedance power distribution. Full mapping is defined in Table 1 of SCES062Q, and no internal connections exist on NC balls (e.g., A2–A5, K2–K5).
Can SN74LVC16245AZQLR be used as two independent 8-bit transceivers?
Yes, SN74LVC16245AZQLR is explicitly designed to operate as two independent 8-bit transceivers: Channel 1 (pins 1DIR, 1OE, 1A1–1A8, 1B1–1B8) and Channel 2 (pins 2DIR, 2OE, 2A1–2A8, 2B1–2B8). Each channel has separate DIR and OE controls, allowing simultaneous A→B and B→A data flow on different buses - verified in the Function Table (Section 9.4) and Typical Application schematic (Figure 4) of the datasheet.
SN74LVC16245AZQLR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVC
- 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:
- 24mA, 24mA
- Voltage - Supply:
- 1.65V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 56-BGA Microstar Junior (7x4.5)
SN74LVC16245AZQLR FAQ
1.How can I place an order for SN74LVC16245AZQLR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVC16245AZQLR 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 SN74LVC16245AZQLR reliable?
The price and inventory of SN74LVC16245AZQLR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVC16245AZQLR is usually 5 days.
3.What payment methods are accepted for SN74LVC16245AZQLR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LVC16245AZQLR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74LVC16245AZQLR?
SN74LVC16245AZQLR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LVC16245AZQLR 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 SN74LVC16245AZQLR?
For technical support, including SN74LVC16245AZQLR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVC16245AZQLR requirements.
6.How does Aetrix verify that SN74LVC16245AZQLR is sourced from the original manufacturer or authorized distributors?
All SN74LVC16245AZQLR 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 SN74LVC16245AZQLR meets industry standards.
7.What is the process for return or replacement of SN74LVC16245AZQLR?
All SN74LVC16245AZQLR units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVC16245AZQLR, 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 SN74LVC16245AZQLR part is unused and in its original packaging.
Return procedure for SN74LVC16245AZQLR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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