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Texas Instruments SN74LVCR16245AGQLR
- Part No.:
- SN74LVCR16245AGQLR
- Manufacturer:
- Texas Instruments
- Package:
- 56-VFBGA
- Datasheet:
-
SN74LVCR16245AGQLR.pdf
- Description:
- IC TXRX NON-INVERT 3.6V 56BGA
- Quantity:
- Payment:
- Shipping:
Inventory:2,835
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Product details
Overview
SN74LVCR16245AGQLR 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 signaling (5.5-V-tolerant inputs at 3.3-V VCC), delivers 4.8 ns max propagation delay at 3.3 V, and integrates 26-Ω series output resistors to suppress switching noise-used in server backplanes and telecom infrastructure interconnects.
For engineers reviewing the SN74LVCR16245AGQLR datasheet, SN74LVCR16245AGQLR pinout, SN74LVCR16245AGQLR application, or SN74LVCR16245AGQLR equivalent, key selection factors include Ioff-enabled live insertion support, 5.5-V input tolerance for 3.3-V/5-V level translation, dual independent DIR/OE control per 8-bit section, and guaranteed operation across –40°C to 125°C ambient.
Technical Context
The SN74LVCR16245AGQLR implements two independent 8-bit bidirectional transceiver sections, each controlled by dedicated DIR (direction) and OE (output enable) inputs. Its logic-level translation capability arises from overvoltage-tolerant input circuitry that accepts up to 5.5 V regardless of VCC (1.65–3.6 V), enabling reliable interfacing between 3.3-V system logic and legacy 5-V peripherals.
Each I/O port features integrated 26-Ω series termination to damp signal edges and reduce EMI from long PCB traces or cables. The device includes active bus-hold circuitry on all data inputs to maintain valid logic states when undriven, and supports partial-power-down via Ioff, which disables outputs and blocks current backflow when VCC = 0 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 1.65 V to 3.6 V - Enables direct integration into low-voltage embedded systems without level-shifting circuitry. |
| Input Voltage Tolerance | Up to 5.5 V - Allows connection to 5-V sources while powered from 3.3-V rails, supporting mixed-voltage board designs. |
| Max Propagation Delay | 4.8 ns at 3.3 V - Supports high-speed data transfer in applications requiring sub-5-ns timing margins. |
| Output Drive Strength | ±12 mA at 3.0 V - Sufficient to drive standard CMOS loads and moderate capacitive stubs without external buffers. |
| Ioff Current | ±10 µA at 5.5 V - Prevents damaging back-current during hot-swap or partial power-down sequences. |
| Operating Temperature | –40°C to +125°C - Qualified for industrial and telecom infrastructure environments with wide thermal swings. |
| ESD Rating | 2000-V HBM - Meets JEDEC JESD22-A114-A for robust handling in manufacturing and field service. |
Pinout & Package
The SN74LVCR16245AGQLR is packaged in a 48-pin GQL (microStar BGA) package measuring 7.00 mm × 4.50 mm, optimized for high-density routing and thermal performance in space-constrained applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1DIR, 2DIR | Direction control input (per 8-bit section) | Determines data flow direction: DIR = L enables B→A; DIR = H enables A→B. |
| 1OE, 2OE | Output enable input (per 8-bit section) | Active-low control: OE = L enables outputs; OE = H places ports in high-impedance isolation. |
| 1A1–1A8, 2A1–2A8 | A-side bidirectional I/O port | Connects to local bus or controller side; accepts and drives signals with 26-Ω series resistance. |
| 1B1–1B8, 2B1–2B8 | B-side bidirectional I/O port | Connects to remote bus or peripheral side; electrically identical to A-side with same termination. |
| VCC (Pins 7, 18, 31, 42) | Power supply | Four distributed VCC pins reduce IR drop and improve noise immunity across the 48-pin BGA array. |
| GND (Pins 4, 10, 15, 21, 28, 34, 39, 45) | Ground reference | Eight GND pins provide low-inductance return paths and enhance signal integrity for high-speed switching. |
Key Features
| Feature | Design Value |
|---|---|
| Mixed-mode signal operation | 5.5-V-tolerant inputs at 1.65–3.6-V VCC enable seamless 3.3-V/5-V voltage domain bridging without external translators. |
| Integrated 26-Ω series output resistors | Eliminate need for discrete termination components, reducing BOM count and PCB area while suppressing edge-induced EMI. |
| Ioff partial-power-down support | Blocks current flow between powered and unpowered sections during hot-insertion or system sleep modes, protecting downstream circuitry. |
| Bus-hold circuitry | Actively maintains valid logic levels on unused or floating A/B port inputs, preventing metastability and system lockup. |
| High-speed 3-state outputs | Guaranteed 4.8 ns tpd at 3.3 V ensures compatibility with DDR2/DDR3 memory bus timing budgets and high-throughput switch fabrics. |
Applications
| Server Backplane Interconnect | Industrial PLC I/O Expansion |
|---|---|
Use Scenario: Bidirectional data exchange between CPU module and hot-swappable I/O carrier cards in 1U rack-mounted servers. IC Role / Device Role / Timing Role: Level-translating bus transceiver managing 16-bit parallel control/status lines between 3.3-V host and 5-V legacy I/O modules. Use Value: Ioff protection prevents damage during card insertion/removal; 5.5-V input tolerance allows direct connection to 5-V sensor interfaces without added logic. |
Use Scenario: Isolating and translating control signals between 3.3-V microcontroller and 24-V industrial fieldbus nodes in programmable logic controllers. IC Role / Device Role / Timing Role: Dual-section transceiver providing independent direction and enable control for separate analog input and digital output banks. Use Value: Bus-hold circuitry maintains safe default states on disconnected I/O channels; 125°C rating supports operation inside sealed enclosures near motor drives. |
| Telecom Line Card Interface | Network Switch Fabric Buffering |
Use Scenario: Interfacing FPGA-based packet processors with legacy 5-V PHY devices on modular line cards in carrier-grade routers. IC Role / Device Role / Timing Role: High-speed 16-bit transceiver enabling synchronous data transfer between 3.3-V FPGA fabric and 5-V SerDes companion chips. Use Value: 4.8 ns propagation delay meets tight setup/hold timing for 100-MHz parallel interfaces; 26-Ω output resistors minimize reflections on 10-cm backplane traces. |
Use Scenario: Buffering address/data lines between ASIC-based switch fabric and external SRAM used for packet buffering in enterprise switches. IC Role / Device Role / Timing Role: Dual-octal transceiver partitioned to isolate read and write data paths, reducing contention during concurrent access cycles. Use Value: Independent DIR/OE per section allows dynamic reconfiguration of data path direction without global reset; low ICCZ (<5 µA) minimizes standby power in always-on buffer stages. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC16245ADGGR | No Ioff support; 5-V-tolerant inputs only up to VCC + 0.5 V (not 5.5 V absolute); no integrated 26-Ω resistors. | Suitable for fixed-rail 3.3-V-only systems without hot-swap requirements; requires external termination for EMI control. | Select when cost sensitivity outweighs Ioff and mixed-voltage needs; verify VCC-dependent input limits match system voltage stack-up. |
| SN74AVC16245DGVR | Lower VCC range (1.2–3.6 V); higher speed (3.2 ns tpd at 2.5 V); no bus-hold; 12-Ω series resistors. | Better suited for ultra-low-voltage mobile SoC interconnects; lacks robustness for industrial 5-V peripheral interfacing. | Prefer for battery-powered or advanced-node designs needing sub-4-ns latency; avoid where 5.5-V input tolerance or bus-hold is required. |
Compared with SN74LVC16245ADGGR and SN74AVC16245DGVR, the SN74LVCR16245AGQLR uniquely combines 5.5-V absolute input tolerance, Ioff-enabled live insertion, and integrated 26-Ω termination-making it the only option qualified for mixed-voltage telecom and industrial backplane applications demanding reliability under partial power-down conditions.
Availability
SN74LVCR16245AGQLR is available at Aetrix Electronics and suitable for server backplane interconnect, industrial PLC I/O expansion, and telecom line card interface requiring stable component supply across extended temperature and mixed-voltage operating conditions.
Supply support for SN74LVCR16245AGQLR 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 expertise in high-reliability logic and interface solutions.
The SN74LVCR16245AGQLR belongs to TI's Widebus™ family of advanced bus transceivers, engineered specifically for robust, high-speed bidirectional data transfer in mixed-voltage, thermally demanding infrastructure equipment.
FAQ
What voltage levels can the SN74LVCR16245AGQLR inputs tolerate?
The SN74LVCR16245AGQLR inputs accept voltages up to 5.5 V regardless of VCC setting (1.65–3.6 V), enabling direct interfacing with 5-V logic while operating from a 3.3-V supply. This absolute 5.5-V tolerance-not relative to VCC-is confirmed in Section 7.1 Absolute Maximum Ratings and Section 9.3 Feature Description of the SCES427B datasheet.
Does the SN74LVCR16245AGQLR support hot-plug or live-insertion scenarios?
Yes, the SN74LVCR16245AGQLR supports live insertion via its Ioff feature, which disables outputs and blocks current backflow when VCC = 0 V. This is explicitly documented in the Features list and Section 9.3, and verified by the ±10 µA Ioff leakage spec at 5.5 V in Section 7.5 Electrical Characteristics.
How does the SN74LVCR16245AGQLR handle unused inputs?
The SN74LVCR16245AGQLR includes active bus-hold circuitry on all A- and B-port inputs, which maintains undriven or floating pins at valid logic HIGH or LOW states. This eliminates the need for external pull-up/pull-down resistors and prevents undefined operation-confirmed in the Features section and Section 9.1 Overview of the datasheet.
What is the maximum propagation delay of the SN74LVCR16245AGQLR at 3.3 V?
The maximum propagation delay (tpd) of the SN74LVCR16245AGQLR is 4.8 ns at VCC = 3.3 V, TA = 25°C, as specified in the Features list and Table 7-6 Switching Characteristics. This value is measured under defined load conditions (CL = 50 pF, ∆V = ±0.3 V) and applies to both A→B and B→A data paths.
Which packages are available for the SN74LVCR16245AGQLR?
The SN74LVCR16245AGQLR is exclusively offered in the GQL (microStar BGA) package: 48-pin, 7.00 mm × 4.50 mm body size, with ball pitch of 0.5 mm. This is confirmed in the Device Information table (Section 3) and the Package Option Addendum, where "GQL" is the only package listed for part number SN74LVCR16245AGQLR.
SN74LVCR16245AGQLR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVCR
- 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:
- 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)
SN74LVCR16245AGQLR FAQ
1.How can I place an order for SN74LVCR16245AGQLR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVCR16245AGQLR 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 SN74LVCR16245AGQLR reliable?
The price and inventory of SN74LVCR16245AGQLR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVCR16245AGQLR is usually 5 days.
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4.How is shipping managed for SN74LVCR16245AGQLR?
SN74LVCR16245AGQLR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LVCR16245AGQLR 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 SN74LVCR16245AGQLR?
For technical support, including SN74LVCR16245AGQLR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVCR16245AGQLR requirements.
6.How does Aetrix verify that SN74LVCR16245AGQLR is sourced from the original manufacturer or authorized distributors?
All SN74LVCR16245AGQLR 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 SN74LVCR16245AGQLR meets industry standards.
7.What is the process for return or replacement of SN74LVCR16245AGQLR?
All SN74LVCR16245AGQLR units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVCR16245AGQLR, 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 SN74LVCR16245AGQLR part is unused and in its original packaging.
Return procedure for SN74LVCR16245AGQLR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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