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Texas Instruments SN74LVCR162245KR
- Part No.:
- SN74LVCR162245KR
- Manufacturer:
- Texas Instruments
- Package:
- 56-VFBGA
- Datasheet:
-
SN74LVCR162245KR.pdf
- Description:
- IC TXRX NON-INVERT 3.6V 56BGA
- Quantity:
- Payment:
- Shipping:
Inventory:4,222
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Product details
Overview
SN74LVCR162245KR from Texas Instruments is a 16-bit dual-octal noninverting bus transceiver with 3-state outputs, designed for asynchronous bidirectional data transfer between 2.7-V to 3.6-V buses. It supports 5.5-V-tolerant inputs, features integrated 26-Ω output series resistors, and includes active bus-hold circuitry on all data inputs. It is used in high-speed memory and peripheral interface applications requiring level translation and bus isolation.
For engineers reviewing the SN74LVCR162245KR datasheet, SN74LVCR162245KR pinout, SN74LVCR162245KR application, or SN74LVCR162245KR equivalent, key selection criteria include its 8.5 ns max propagation delay at 3.3 V, 12 mA output drive capability, VFBGA (ZQL) package footprint, bus-hold functionality eliminating external resistors, and compatibility with mixed-voltage system interconnects.
Technical Context
The SN74LVCR162245KR implements two independent 8-bit transceiver sections, each controlled by dedicated DIR (direction) and OE (output enable) signals. Its logic allows data flow either from A-to-B or B-to-A per section, with simultaneous 3-state control enabling full bus isolation when OE is high.
It integrates on-die 26-Ω series termination on all 16 outputs to suppress overshoot/undershoot, and employs active bus-hold circuitry-internal weak-latch networks-on all 32 data I/O pins (A1–A8, B1–B8 per side), holding floating inputs at valid logic levels without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 2.7 V to 3.6 V - defines compatible low-voltage I/O domains (e.g., 3.3-V LVTTL, LVCMOS) |
| Input Voltage Tolerance | Up to 5.5 V - enables safe interfacing with 5-V legacy peripherals without level shifters |
| Max Propagation Delay | 8.5 ns at VCC = 3.3 V - supports >100 MHz bus operation in timing-critical interfaces |
| Output Drive Strength | ±12 mA - sufficient to drive standard 50-pF loads across PCB traces or backplanes |
| Bus-Hold Current | ±75 µA at VI = 2 V - maintains stable logic state on unconnected or unterminated data lines |
| Output Series Resistance | 26 Ω (integrated) - eliminates need for external series termination resistors on PCB |
| ESD Protection | 2000-V HBM, 200-V MM - exceeds JEDEC JESD22-A114/A115 for robust board-level handling |
Pinout & Package
VFBGA package (ZQL, 48-pin, 5.5 mm × 6.0 mm, 0.5-mm pitch); bottom-side ball layout matches GQL/ZQL mechanical drawing; RoHS-compliant NiPdAu ball finish; MSL Level-1 (260°C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1DIR, 2DIR | Direction control input (per 8-bit section) | Low = B→A data flow; High = A→B data flow; controls internal transceiver path polarity |
| 1OE, 2OE | Output enable input (per 8-bit section) | Low = outputs active; High = all outputs enter high-impedance state for bus isolation |
| A1–A8, B1–B8 (x2 sections) | Bidirectional data I/O terminals | Each pair connects to separate bus segments; bus-hold active regardless of OE/DIR state |
| VCC, GND (x6 each) | Power and ground distribution | Multiple VCC/GND balls minimize IR drop and improve noise immunity across high-speed switching |
| NC (pins A1, A4, A5, A6, K1, K4, K5, K6) | No internal connection | Must remain unconnected on PCB; no routing or stitching required |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 26-Ω output series resistors | Eliminates need for 32 discrete SMT resistors, reducing BOM count and PCB area in dense layouts |
| Active bus-hold on all 32 data I/Os | Prevents floating-input-induced glitches and EMI without pull-up/down resistors or firmware intervention |
| 5.5-V-tolerant inputs at 2.7–3.6-V VCC | Enables direct connection to 5-V microcontrollers, FPGAs, or legacy peripherals in mixed-voltage systems |
| Low ground bounce (VOLP < 0.8 V) and undershoot (VOHV > 2 V) | Reduces signal integrity risk in high-speed parallel buses, easing timing margin validation |
| Latch-up immunity > 250 mA | Meets JEDEC JESD17 for robustness against transient overvoltage events in industrial environments |
Applications
| Memory Interface Expansion | Industrial PLC Backplane Interconnect |
|---|---|
Use Scenario: Expanding address/data bus between a 3.3-V FPGA and multiple 5-V SRAM or Flash devices. IC Role / Device Role / Timing Role: Bidirectional level-translating transceiver managing A/B bus direction under FPGA control; provides timing isolation via 3-state outputs during arbitration. Use Value: Eliminates discrete level shifters and termination resistors while maintaining <8.5 ns propagation delay for synchronous read/write cycles. |
Use Scenario: Isolating CPU and I/O module buses in a modular programmable logic controller rack. IC Role / Device Role / Timing Role: Dual-section bus isolator enabling hot-swap-safe communication; DIR/OE pins synchronized to backplane reset and enable signals. Use Value: Bus-hold prevents spurious transitions during module insertion/removal; 26-Ω outputs suppress ringing on long backplane traces. |
| Automotive Infotainment Data Bridge | Test Equipment Signal Conditioning |
Use Scenario: Interfacing a 3.3-V SoC application processor with legacy 5-V CAN controller or display timing IC. IC Role / Device Role / Timing Role: Voltage-tolerant transceiver providing bidirectional data path with configurable direction and disable control for protocol handshaking. Use Value: 5.5-V input tolerance avoids external clamping diodes; low ground bounce ensures clean signal edges meeting automotive EMC requirements. |
Use Scenario: Buffering and conditioning parallel test vectors between ATE controller and DUT in automated functional testing. IC Role / Device Role / Timing Role: High-fidelity bus repeater with matched delay paths and controlled edge rates for precise timing alignment. Use Value: Integrated 26-Ω resistors and <8.5 ns tpd variation ensure deterministic setup/hold margins across all 16 bits at 100+ MHz test clock rates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC162245DGGR | Same pinout and function but lacks bus-hold and 5.5-V-tolerant inputs; operates only up to 3.6 V on I/Os | Requires external pull-ups for unused inputs; not suitable for 5-V peripheral interfacing | Select if cost sensitivity outweighs bus-hold need and all connected devices are strictly 3.3-V. |
| SN74AVC162245GR | Supports 1.2–3.6-V operation with lower 3.5 ns tpd, but no 5.5-V tolerance and no integrated 26-Ω resistors | Needs external termination; better for ultra-low-voltage sub-1.8-V domains, not mixed-voltage bridging | Choose for sub-1.8-V systems where speed >800 Mbps matters more than voltage translation. |
Compared with SN74LVCR162245KR, SN74LVC162245DGGR reduces cost but sacrifices robustness on floating inputs and 5-V compatibility, while SN74AVC162245GR improves speed and voltage range downward but removes critical integrated termination and overvoltage protection needed in industrial bridging.
Availability
SN74LVCR162245KR is available at Aetrix Electronics and suitable for memory expansion, industrial backplane interconnect, automotive infotainment bridging, and ATE signal conditioning requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for SN74LVCR162245KR 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 delivering analog, embedded processing, and connectivity solutions with emphasis on reliability, scalability, and broad ecosystem support.
The SN74LVCR162245KR belongs to TI's Widebus™ family of high-speed, low-voltage bus interface devices engineered for robust bidirectional data transfer in mixed-voltage industrial, computing, and communications systems.
FAQ
What is the maximum operating temperature range for the SN74LVCR162245KR?
The SN74LVCR162245KR is rated for operation from –40°C to +85°C ambient temperature, matching industrial-grade requirements. This range is validated per TI's recommended operating conditions and applies to all electrical specifications including propagation delay, drive strength, and bus-hold performance. The VFBGA (ZQL) package's 42°C/W thermal impedance supports reliable operation within this range under typical PCB power dissipation.
Does the SN74LVCR162245KR require external pull-up or pull-down resistors on its data lines?
No, the SN74LVCR162245KR does not require external pull-up or pull-down resistors because it integrates active bus-hold circuitry on all 32 data I/O pins (A1–A8 and B1–B8 for both sections). This internal weak-latch network holds unused or floating inputs at valid logic levels, eliminating risk of undefined states. Using external resistors with bus-hold enabled is explicitly discouraged in the datasheet.
Can the SN74LVCR162245KR interface directly with 5-V logic devices?
Yes, the SN74LVCR162245KR accepts input voltages up to 5.5 V while operating from a 2.7–3.6-V VCC supply, enabling direct connection to 5-V peripherals such as legacy microcontrollers, SRAM, or display drivers. Its inputs are overvoltage-tolerant without clamping diodes or level-shifting circuitry, simplifying mixed-voltage system design.
What is the purpose of the 26-Ω series resistors integrated into each output of the SN74LVCR162245KR?
The 26-Ω series resistors integrated into each of the 16 outputs of the SN74LVCR162245KR serve to dampen signal reflections and suppress overshoot/undershoot on PCB traces. They eliminate the need for 32 discrete external termination resistors, reducing BOM cost and layout complexity. This feature is especially valuable in high-speed parallel buses where trace impedance mismatches could otherwise degrade signal integrity.
How does the direction-control (DIR) and output-enable (OE) logic work in the SN74LVCR162245KR?
The SN74LVCR162245KR contains two independent 8-bit transceiver sections, each with dedicated DIR and OE inputs. When OE is low, data flows bidirectionally: DIR = low enables B→A transfer; DIR = high enables A→B transfer. When OE is high, all outputs go high-impedance regardless of DIR state, isolating both buses. This dual-control architecture allows fine-grained bus arbitration without external logic.
SN74LVCR162245KR 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:
- 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)
SN74LVCR162245KR FAQ
1.How can I place an order for SN74LVCR162245KR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVCR162245KR 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 SN74LVCR162245KR reliable?
The price and inventory of SN74LVCR162245KR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVCR162245KR is usually 5 days.
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4.How is shipping managed for SN74LVCR162245KR?
SN74LVCR162245KR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LVCR162245KR 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 SN74LVCR162245KR?
For technical support, including SN74LVCR162245KR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVCR162245KR requirements.
6.How does Aetrix verify that SN74LVCR162245KR is sourced from the original manufacturer or authorized distributors?
All SN74LVCR162245KR 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 SN74LVCR162245KR meets industry standards.
7.What is the process for return or replacement of SN74LVCR162245KR?
All SN74LVCR162245KR units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVCR162245KR, 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 SN74LVCR162245KR part is unused and in its original packaging.
Return procedure for SN74LVCR162245KR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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