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Texas Instruments SN74AUC16245GQLR
- Part No.:
- SN74AUC16245GQLR
- Manufacturer:
- Texas Instruments
- Package:
- 56-VFBGA
- Datasheet:
-
SN74AUC16245GQLR.pdf
- Description:
- IC TXRX NON-INVERT 2.7V 56BGA
- Quantity:
- Payment:
- Shipping:
Inventory:3,332
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Product details
Overview
SN74AUC16245GQLR from Texas Instruments is a 16-bit dual-octal noninverting bus transceiver optimized for 1.8-V operation with 3.6-V I/O tolerance, sub-1-V operability, 2-ns max propagation delay at 1.8 V, and ±8-mA output drive-used in low-voltage bidirectional data bus interfacing between mixed-supply domains in portable computing and high-speed memory subsystems.
For engineers reviewing the SN74AUC16245GQLR datasheet, SN74AUC16245GQLR pinout, SN74AUC16245GQLR application, or SN74AUC16245GQLR equivalent, key selection criteria include Ioff-enabled partial-power-down support, 0.8-V to 2.7-V operating range, 42°C/W thermal resistance in VFBGA, and direction-controlled A↔B bidirectional data flow without external timing constraints.
Technical Context
The SN74AUC16245GQLR implements two independent 8-bit transceiver sections, each controlled by dedicated DIR (direction) and OE (output-enable) inputs, enabling asynchronous A-to-B or B-to-A data transfer. Its Ioff circuitry actively disables outputs during power-down to prevent backflow current, satisfying JESD 78 Class II latch-up requirements (>100 mA).
Designed for ultra-low-voltage operation down to 0.8 V, it maintains guaranteed logic thresholds (VIH = 0.65×VCC, VIL = 0.35×VCC) across 1.1–1.95 V, supports 3.6-V tolerant I/O, and delivers 20-µA max ICC quiescent current-making it suitable for battery-powered systems requiring rail-to-rail interoperability between 1.2-V, 1.5-V, and 1.8-V logic domains.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 0.8 V to 2.7 V - enables direct interface with sub-1.2-V core logic and compatibility with 1.8-V I/O rails |
| Max tpd | 2 ns at 1.8 V - supports >500-MHz data throughput in short-bus configurations |
| I/O Tolerance | 3.6 V - allows safe connection to higher-voltage peripherals without level shifters |
| Output Drive | ±8 mA at 1.8 V - sufficient to drive 50-Ω transmission lines or fan-out to ≥10 LVTTL loads |
| Ioff Support | Enabled - prevents destructive current flow when VCC = 0 while I/O pins remain biased |
| ESD Rating | 2000-V HBM - meets industrial-grade robustness requirements for board-level handling |
| θJA | 42°C/W (VFBGA) - enables high-density PCB layouts with minimal thermal derating at 100-mW dissipation |
Pinout & Package
VFBGA-48 (GQL) package: 3.5 mm × 4.5 mm, 0.5-mm pitch, bottom-side ball array with standard JEDEC MO-153 footprint; pin 1 located at corner marked by chamfered edge per TI mechanical drawing MTSS003D.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1DIR, 2DIR | Direction control input (per 8-bit section) | High = A→B data flow; Low = B→A; determines signal path polarity for isolation integrity |
| 1OE, 2OE | Output enable input (active-low) | Low = transceiver enabled; High = 3-state isolation; tie to VCC via pullup for power-up safety |
| 1A1–1A8, 2A1–2A8 | Port A data terminals | First and second 8-bit source/sink bus; electrically identical, independently configurable |
| 1B1–1B8, 2B1–2B8 | Port B data terminals | First and second 8-bit destination/source bus; supports bidirectional flow per DIR state |
| VCC, GND | Power supply and ground | Four VCC and six GND balls distributed for low-inductance decoupling and EMI reduction |
Key Features
| Feature | Design Value |
|---|---|
| Sub-1-V operability | Functional at 0.8 V VCC - enables integration with advanced low-power SoC cores and energy-harvesting systems |
| Ioff partial-power-down | Active output disable during VCC=0 - eliminates need for external isolation switches in hot-swap or sleep-mode designs |
| 3.6-V I/O tolerance | Safe interface to legacy 3.3-V peripherals - removes level-shifter components and associated board area/cost |
| 2-ns propagation delay | Timing margin for 500-MHz burst transfers - reduces setup/hold timing closure effort in FPGA-to-memory or processor-to-peripheral links |
| Latch-up immunity | >100 mA per JESD 78 Class II - ensures reliability in noisy industrial environments with transient coupling |
Applications
| Mobile DDR Memory Interface | Low-Power FPGA I/O Bridging |
|---|---|
Use Scenario: Bidirectional data routing between 1.8-V FPGA I/O banks and 1.2-V LPDDR2/3 memory controllers in handheld devices. IC Role / Device Role / Timing Role: Voltage-translating bus transceiver managing direction-controlled read/write bursts with sub-2-ns skew. Use Value: Eliminates discrete level shifters while maintaining 500-MHz timing margin and supporting dynamic voltage scaling across VCC range. | Use Scenario: Isolating and translating signals between heterogeneous FPGA I/O banks operating at 1.5-V and 1.8-V in reconfigurable sensor hubs. IC Role / Device Role / Timing Role: Dual-section transceiver providing independent A↔B control per peripheral cluster with Ioff-based power-domain separation. Use Value: Enables selective power gating of sensor interfaces without signal leakage or bus contention during sleep states. |
| USB 2.0 PHY Interface Logic | Industrial PLC Backplane Buffer |
Use Scenario: Level-shifting and bus-isolation between 1.8-V USB controller PHY and 3.3-V host controller logic in embedded USB hosts. IC Role / Device Role / Timing Role: 3.6-V tolerant transceiver handling D+ and D− control/data lines with direction-synchronized enable timing. Use Value: Achieves full USB 2.0 signaling compliance without external clamping diodes or voltage translators. | Use Scenario: Interfacing 1.8-V microcontroller peripherals to 2.5-V fieldbus transceivers in modular PLC I/O modules. IC Role / Device Role / Timing Role: Robust bidirectional buffer with JESD 78 Class II latch-up immunity and 2000-V HBM ESD protection. Use Value: Reduces failure rate in electrically noisy factory-floor environments while supporting mixed-rail backplane architectures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74AVC16245DGVR | Higher VCC min (1.2 V), lower drive (±6 mA @ 1.5 V), 58°C/W θJA (TVSOP) | Less suitable for sub-1.2-V SoC integration; better for cost-sensitive 1.5-V-only systems | Select when operating strictly above 1.2 V and board space permits larger TVSOP package |
| SN74LVC16245ADGGR | Wider VCC range (1.65–3.6 V), higher tpd (3.8 ns @ 3.3 V), no sub-1-V operation | Targeted at 3.3-V legacy systems; lacks Ioff and 3.6-V I/O tolerance at low VCC | Choose only for drop-in replacement in existing 3.3-V designs where 1.8-V operation is unnecessary |
Compared with SN74AVC16245DGVR and SN74LVC16245ADGGR, the SN74AUC16245GQLR uniquely supports true sub-1-V operation, delivers lowest propagation delay at 1.8 V, and provides superior thermal performance in the compact VFBGA package-making it optimal for next-generation ultra-low-power, high-density portable electronics.
Availability
SN74AUC16245GQLR is available at Aetrix Electronics and suitable for mobile DDR memory interfaces, low-power FPGA I/O bridging, USB 2.0 PHY interfacing, industrial PLC backplane buffering, and mixed-voltage sensor hub designs requiring stable component supply across automotive and industrial temperature ranges.
Supply support for SN74AUC16245GQLR 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 90 years of innovation in precision analog and low-power digital ICs.
The SN74AUC16245GQLR belongs to TI's Widebus™ family of ultra-high-speed, low-voltage logic devices engineered specifically for power-constrained, mixed-rail digital interconnect in portable and battery-operated systems.
FAQ
What is the minimum operating voltage for the SN74AUC16245GQLR?
The SN74AUC16245GQLR operates down to 0.8 V VCC, with guaranteed functionality across the full 0.8-V to 2.7-V range. At 0.8 V, input thresholds are specified as VIH = 0 V and VIL = 0.7 V, enabling reliable interfacing with emerging sub-1-V logic families. This capability is explicitly validated in the recommended operating conditions table of the SCES392E datasheet.
Does the SN74AUC16245GQLR support hot insertion or partial power-down?
Yes, the SN74AUC16245GQLR features Ioff circuitry that disables outputs when VCC = 0, preventing damaging current backflow through powered-off sections. This allows safe hot insertion into live backplanes and enables partial-power-down modes in multi-rail systems-fully compliant with JESD 78 Class II latch-up immunity requirements (>100 mA).
What is the thermal resistance (θJA) of the SN74AUC16245GQLR package?
For the VFBGA-48 (GQL) package, the SN74AUC16245GQLR has a junction-to-ambient thermal resistance (θJA) of 42°C/W, as specified in the absolute maximum ratings table. This value reflects optimized thermal performance for high-density PCB layouts and is significantly lower than the 58°C/W (TVSOP) and 70°C/W (TSSOP) alternatives-enabling higher sustained power density without derating.
Can the SN74AUC16245GQLR interface directly with 3.3-V logic?
Yes, the SN74AUC16245GQLR supports 3.6-V tolerant I/O, allowing direct connection to 3.3-V peripherals without external level shifters. Input and output voltage ranges extend to −0.5 V to 3.6 V, and the device maintains full logic functionality and ESD robustness (2000-V HBM) under these conditions-verified across all recommended operating voltages in the SCES392E datasheet.
How is direction control implemented on the SN74AUC16245GQLR?
The SN74AUC16245GQLR uses two independent DIR inputs (1DIR and 2DIR) to control data flow per 8-bit section: DIR = Low enables B→A transfer; DIR = High enables A→B transfer. Each section operates asynchronously, allowing simultaneous but opposite-direction data movement-confirmed by the function table and logic diagram in the SCES392E datasheet.
SN74AUC16245GQLR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74AUC
- 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:
- 9mA, 9mA
- Voltage - Supply:
- 0.8V ~ 2.7V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 56-BGA Microstar Junior (7x4.5)
SN74AUC16245GQLR FAQ
1.How can I place an order for SN74AUC16245GQLR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74AUC16245GQLR 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 SN74AUC16245GQLR reliable?
The price and inventory of SN74AUC16245GQLR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74AUC16245GQLR is usually 5 days.
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4.How is shipping managed for SN74AUC16245GQLR?
SN74AUC16245GQLR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74AUC16245GQLR 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 SN74AUC16245GQLR?
For technical support, including SN74AUC16245GQLR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74AUC16245GQLR requirements.
6.How does Aetrix verify that SN74AUC16245GQLR is sourced from the original manufacturer or authorized distributors?
All SN74AUC16245GQLR 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 SN74AUC16245GQLR meets industry standards.
7.What is the process for return or replacement of SN74AUC16245GQLR?
All SN74AUC16245GQLR units undergo pre-shipment inspection (PSI). If there is an issue with SN74AUC16245GQLR, 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 SN74AUC16245GQLR part is unused and in its original packaging.
Return procedure for SN74AUC16245GQLR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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