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Texas Instruments SN74LVTH162245KR
- Part No.:
- SN74LVTH162245KR
- Manufacturer:
- Texas Instruments
- Package:
- 56-VFBGA
- Datasheet:
-
SN74LVTH162245KR.pdf
- Description:
- IC TXRX NON-INVERT 3.6V 56BGA
- Quantity:
- Payment:
- Shipping:
Inventory:4,340
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Product details
Overview
SN74LVTH162245KR from Texas Instruments is a 3.3-V ABT 16-bit dual-octal noninverting bus transceiver with 3-state outputs, designed for mixed-mode signal operation between 3.3-V and 5-V systems. It supports hot insertion via Ioff and power-up 3-state, features bus-hold on all data inputs, and integrates 22-Ω series resistors on A-port outputs to suppress overshoot/undershoot. Used in high-speed backplane and memory interface applications requiring bidirectional data flow control.
For engineers reviewing the SN74LVTH162245KR datasheet, SN74LVTH162245KR pinout, SN74LVTH162245KR application, or SN74LVTH162245KR equivalent, key selection criteria include its 56-ball VFBGA (ZQL) package, 2.7–3.6-V supply range, ±12 mA A-port / ±64 mA B-port drive capability, bus-hold functionality eliminating external resistors, and support for unregulated battery operation down to 2.7 V.
Technical Context
The SN74LVTH162245KR implements dual 8-bit bidirectional data paths controlled by independent DIR and OE inputs per section, enabling flexible A↔B or B↔A data transmission. Its ABT (Advanced BiCMOS Technology) architecture delivers TTL-compatible output levels with 3.3-V VCC while accepting 5-V inputs-critical for legacy system interfacing.
Each port includes active bus-hold circuitry that maintains valid logic states on undriven inputs, and distributed VCC/GND pins minimize switching noise. The device enters high-impedance state during power-up/down when VCC is below 1.5 V, with Ioff protection preventing backflow current when powered off.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.7 V to 3.6 V - enables stable operation under unregulated battery or noisy supply conditions |
| A-Port Output Drive | ±12 mA - sufficient to drive standard TTL loads without external termination |
| B-Port Output Drive | ±64 mA - supports higher fan-out and longer trace lengths in backplane environments |
| Propagation Delay | 2.2–4.6 ns (VCC = 3.3 V, CL = 50 pF) - ensures timing compliance in sub-5-ns clock domains |
| Bus-Hold Current | ±75 µA (min) - actively retains logic state on floating inputs, removing need for pullup/pulldown resistors |
| Ioff Leakage | ±100 µA at VCC = 0 - prevents damaging current flow during hot-insertion or partial power-down |
| Input Voltage Range | –0.5 V to 5.5 V - allows direct connection to 5-V logic without level-shifting circuitry |
Pinout & Package
SN74LVTH162245KR is packaged in a 56-ball Very Thin Fine-Pitch Ball Grid Array (VFBGA) with ZQL footprint (7.1 mm × 6.9 mm, 1.0 mm max height), optimized for high-density PCB layouts and thermal performance (θJA = 42°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1DIR, 2DIR | Direction control input (per 8-bit section) | Determines data flow direction: LOW = B→A, HIGH = A→B |
| 1OE, 2OE | Output enable input (per 8-bit section) | LOW enables outputs; HIGH places both A and B ports in high-impedance isolation |
| 1A1–1A8, 2A1–2A8 | A-port data I/Os | Noninverting inputs/outputs with bus-hold and 22-Ω series resistance for signal integrity |
| 1B1–1B8, 2B1–2B8 | B-port data I/Os | Noninverting inputs/outputs supporting 5-V tolerant inputs and higher drive strength |
| VCC, GND | Power and ground terminals | Distributed across package to reduce simultaneous switching noise and improve EMI performance |
| NC | No internal connection | Unbonded balls (A1, A2, A5, A6, K2, K3, K4, K5) - must be left unconnected on PCB |
Key Features
| Feature | Design Value |
|---|---|
| Mixed-mode voltage tolerance | 5-V input/output compatibility with 3.3-V VCC - eliminates external level shifters in hybrid-voltage systems |
| Integrated 22-Ω series resistors | On all A-port outputs - reduces edge-induced ringing and EMI without discrete components |
| Hot-insertion support | Ioff and power-up 3-state - prevents bus contention and backdrive damage during live board replacement |
| Active bus-hold circuitry | On all A/B port inputs - maintains defined logic state on unused or unterminated lines, saving board space and BOM cost |
| Flow-through pinout | Input-to-output alignment across package - simplifies layer routing and minimizes trace length mismatch |
Applications
| High-Speed Backplane Interface | Memory Subsystem Interconnect |
|---|---|
Use Scenario: Bidirectional data transfer between 3.3-V processor and 5-V peripheral cards in telecom rack-mounted equipment. IC Role / Device Role / Timing Role: Level-translating bus transceiver managing A/B port arbitration and isolation under hot-swap conditions. Use Value: Enables seamless interoperability without external voltage translators while meeting <5-ns timing budgets for 100-MHz parallel buses. | Use Scenario: Interfacing DDR SDRAM controller (3.3-V) to legacy SRAM modules (5-V) in industrial PLC memory expansion slots. IC Role / Device Role / Timing Role: Dual-octal transceiver providing direction-controlled data path with bus-hold retention during address latch transitions. Use Value: Eliminates need for 16 discrete pullup resistors and reduces signal integrity risk via integrated series termination. |
| Automotive Infotainment Gateway | Test Equipment Data Acquisition Bus |
Use Scenario: Isolating and translating signals between 3.3-V microcontroller and 5-V CAN transceiver or display driver in vehicle head unit. IC Role / Device Role / Timing Role: 3-state-enabled bus buffer supporting dynamic reconfiguration of shared data lanes during firmware updates. Use Value: Ensures robust operation across automotive temperature range (–40°C to 85°C) with Ioff protection against battery disconnect events. | Use Scenario: Multiplexing sensor data streams from multiple 5-V analog front-ends into a 3.3-V FPGA-based acquisition engine. IC Role / Device Role / Timing Role: High-drive-strength transceiver driving long PCB traces to ADC input buffers with minimal skew. Use Value: Delivers 64-mA B-port sink current to overcome capacitive loading of >10-cm traces, maintaining setup/hold margins. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC162245DGGR | LVC family: lower drive (±24 mA B-port), no bus-hold, no 22-Ω resistors, 1.65–3.6-V VCC | Suitable for low-power, single-supply 3.3-V-only systems without 5-V tolerance requirements | Select when cost and power efficiency outweigh mixed-voltage interface needs and external termination is acceptable |
| SN74ALVCH162245DLR | ALVCH family: 2.3–3.6-V VCC, ±24 mA drive, no bus-hold, no integrated resistors, SSOP-48 package | Preferred for legacy through-hole or SSOP-based designs where VFBGA assembly is not feasible | Choose for drop-in replacement in existing DL-package layouts needing enhanced noise immunity over standard LVT |
Compared with SN74LVTH162245KR, SN74LVC162245DGGR lacks 5-V tolerance and bus-hold, increasing BOM count and reducing robustness in mixed-voltage environments; SN74ALVCH162245DLR offers similar noise immunity but requires PCB redesign due to SSOP packaging and omits critical hot-insertion features.
Availability
SN74LVTH162245KR is available at Aetrix Electronics and suitable for high-speed backplane interfaces, memory subsystem interconnects, and automotive infotainment gateways requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for SN74LVTH162245KR 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 company specializing in analog, embedded processing, and logic solutions, with leadership in industrial, automotive, and communications markets.
The SN74LVTH162245KR belongs to TI's Widebus™ ABT logic family, engineered for high-speed, mixed-voltage bus interfacing in mission-critical infrastructure where signal integrity, hot-swap reliability, and voltage translation are essential.
FAQ
What is the operating temperature range for SN74LVTH162245KR?
The SN74LVTH162245KR is rated for commercial operation from –40°C to +85°C. This range is confirmed in the ordering information table and applies specifically to the ZQL-package variant (SN74LVTH162245KR), which uses Pb-free solder and meets JEDEC MSL Level-1 moisture sensitivity standards.
Does SN74LVTH162245KR support 5-V input signals while powered at 3.3 V?
Yes, SN74LVTH162245KR supports 5-V tolerant inputs across both A and B ports when VCC is 2.7–3.6 V. The absolute maximum input voltage rating is 5.5 V, and the recommended operating condition specifies VI = 5.5 V - enabling direct connection to 5-V logic without external level shifters.
How does the bus-hold feature function on SN74LVTH162245KR?
The bus-hold circuitry on SN74LVTH162245KR actively maintains the last-valid logic state on any undriven A- or B-port input, drawing ±75 µA minimum hold current. This eliminates the need for external pullup or pulldown resistors and prevents floating-input-induced ICCZ leakage or metastability in idle bus segments.
What is the ball pitch and layout compatibility of the SN74LVTH162245KR package?
SN74LVTH162245KR uses a 56-ball ZQL package with 0.65-mm ball pitch, 7.1 mm × 6.9 mm body size, and JRBGA mechanical outline ZQL0056A. Land pattern and stencil design guidelines are published by TI (SPRAA99), and the package is compatible with standard Type III solder paste and reflow profiles for fine-pitch BGAs.
Can SN74LVTH162245KR be used in hot-swap applications?
Yes, SN74LVTH162245KR is explicitly designed for hot-insertion use cases. Its Ioff circuitry disables outputs when VCC = 0, preventing back-current flow, and its power-up 3-state behavior forces high-impedance outputs during power ramp-up - both features validated per JEDEC JESD78 and referenced in the device description.
SN74LVTH162245KR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVTH
- 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; 32mA, 64mA
- 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)
SN74LVTH162245KR FAQ
1.How can I place an order for SN74LVTH162245KR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVTH162245KR 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 SN74LVTH162245KR reliable?
The price and inventory of SN74LVTH162245KR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVTH162245KR is usually 5 days.
3.What payment methods are accepted for SN74LVTH162245KR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LVTH162245KR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74LVTH162245KR?
SN74LVTH162245KR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LVTH162245KR 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 SN74LVTH162245KR?
For technical support, including SN74LVTH162245KR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVTH162245KR requirements.
6.How does Aetrix verify that SN74LVTH162245KR is sourced from the original manufacturer or authorized distributors?
All SN74LVTH162245KR 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 SN74LVTH162245KR meets industry standards.
7.What is the process for return or replacement of SN74LVTH162245KR?
All SN74LVTH162245KR units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVTH162245KR, 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 SN74LVTH162245KR part is unused and in its original packaging.
Return procedure for SN74LVTH162245KR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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