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Texas Instruments 74LVTH162245GRDR
- Part No.:
- 74LVTH162245GRDR
- Manufacturer:
- Texas Instruments
- Package:
- 54-TFBGA
- Datasheet:
-
74LVTH162245GRDR.pdf
- Description:
- IC TXRX NON-INVERT 3.6V 54BGA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
74LVTH162245GRDR 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 motherboard interconnects requiring bidirectional data flow control.
For engineers reviewing the 74LVTH162245GRDR datasheet, 74LVTH162245GRDR pinout, 74LVTH162245GRDR application, or 74LVTH162245GRDR equivalent, key selection considerations include its 54-ball VFBGA (GRD) 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 74LVTH162245GRDR implements a dual-octal transceiver architecture with independent direction-control (DIR) and output-enable (OE) inputs per 8-bit section. Its ABT logic family delivers TTL-compatible input thresholds (VIH = 2.0 V, VIL = 0.8 V) while operating at 3.3-V VCC, enabling seamless interfacing with legacy 5-V buses.
It features distributed VCC/GND pins and flow-through pinout to minimize switching noise and optimize PCB layout. The device enters high-impedance state during power-up/down when VCC is below 1.5 V, and includes Ioff circuitry to block reverse current during hot insertion.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Supply Range | 2.7 V to 3.6 V - supports unregulated battery operation and tolerates supply droop without functional loss |
| A-Port Output Drive | ±12 mA - integrated 22-Ω series resistors reduce signal integrity issues without external termination |
| B-Port Output Drive | ±64 mA - enables direct driving of heavier capacitive loads or multiple TTL inputs |
| Propagation Delay (A→B) | 2.2 ns (min) to 3.3 ns (max) at VCC = 3.3 V - ensures sub-4 ns timing for high-speed synchronous bus transfers |
| Bus-Hold Current | ±75 µA (min) at VCC = 3.6 V - actively holds unused inputs at valid logic levels, removing need for external pullup/pulldown resistors |
| Ioff Leakage | ±100 µA max at VCC = 0 V - prevents damaging backflow current during hot-plug events or partial power-down |
| Input Voltage Tolerance | 0 V to 5.5 V - allows direct connection to 5-V logic without level-shifting circuitry |
Pinout & Package
74LVTH162245GRDR uses a 54-ball Very Thin Fine-Pitch Ball Grid Array (VFBGA) package designated GRD, measuring 7.1 mm × 6.9 mm × 1.0 mm max height, with ball pitch of 0.65 mm and A1 ball located at top-left corner (Q1 quadrant). The package is RoHS-compliant, lead-free, and moisture-sensitive level 1 (260°C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1B1–1B8, 2B1–2B8 | B-port data I/O terminals | Bi-directional data lines for first and second 8-bit bus segments; internally terminated with bus-hold |
| 1A1–1A8, 2A1–2A8 | A-port data I/O terminals | Bi-directional data lines with 22-Ω series resistance on outputs to damp reflections |
| 1DIR, 2DIR | Direction control inputs | Active-HIGH logic selects data flow direction: DIR = H enables A→B; DIR = L enables B→A |
| 1OE, 2OE | Output enable inputs | Active-LOW logic disables corresponding port outputs into high-impedance state for bus isolation |
| VCC | Power supply | Distributed across multiple balls (C3/C4, D3/D4, G3/G4, H3/H4, J3/J4) to reduce simultaneous switching noise |
| GND | Ground reference | Distributed across 12 balls (B3/B4, C5/C6, D5/D6, E3/E4, F3/F4, G5/G6, H5/H6, J5/J6) for low-inductance return path |
| NC | No internal connection | Balls A2, A3, A4, A5, A6, B2, B5, B6, H2, H7, J2, J7 - must be left unconnected on PCB |
Key Features
| Feature | Design Value |
|---|---|
| Mixed-mode voltage interface | Accepts 5-V inputs and drives 5-V loads while powered from 3.3-V supply - eliminates external level shifters in 3.3/5-V hybrid systems |
| Integrated bus-hold circuitry | Holds all A/B-port data inputs at valid logic states without external resistors - reduces BOM count and board space |
| Hot-insertion support | Ioff and power-up 3-state prevent backdrive current and bus contention during live card replacement - critical for telecom and server backplanes |
| Flow-through pinout | Input and output pins arranged to allow straight PCB trace routing - minimizes layer count and crosstalk in dense layouts |
| Distributed power/ground | Multiple VCC and GND balls interleaved across package - lowers impedance and suppresses ground bounce (VOLP < 0.8 V typical) |
Applications
| High-Speed Backplane Interconnect | Industrial PLC I/O Module |
|---|---|
Use Scenario: Bidirectional data transfer between 3.3-V FPGA controller and legacy 5-V peripheral cards in modular rack systems. IC Role / Device Role / Timing Role: Dual-octal transceiver providing isolated, direction-controlled data path with TTL-compatible signaling. Use Value: Enables drop-in integration of modern low-voltage logic into existing 5-V infrastructure without redesigning signal conditioning or power domains. |
Use Scenario: Level translation and bus isolation between microcontroller-based CPU module and field-side digital I/O expansion boards. IC Role / Device Role / Timing Role: Bus transceiver managing data flow between isolated 3.3-V control domain and 5-V industrial sensor/actuator interfaces. Use Value: Bus-hold eliminates floating inputs during hot-swap of I/O modules; Ioff protects against backfeed during partial system power-down. |
| Automotive Infotainment Gateway | Test Equipment Digital Pattern Generator |
Use Scenario: Signal bridging between 3.3-V SoC and 5-V CAN/LIN transceivers or display interface ICs in head-unit designs. IC Role / Device Role / Timing Role: Voltage-tolerant transceiver ensuring robust communication across mixed-supply subsystem boundaries. Use Value: Supports unregulated battery operation down to 2.7 V - maintains bus integrity during cold-crank conditions without brownout reset. |
Use Scenario: Programmable stimulus generation where FPGA outputs drive multiple 5-V logic families (TTL, LS, ALS) simultaneously. IC Role / Device Role / Timing Role: High-drive 16-bit buffer with precise propagation delay matching (<0.5 ns skew) for synchronized vector delivery. Use Value: ±64 mA B-port drive ensures fast edge rates into heavy capacitive loads; sub-4 ns tPLH/tPHL guarantees tight timing margins in high-frequency test patterns. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit bus transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVTH162245DLR | SSOP-48 package (15.4 mm × 7.5 mm), higher θJA (63°C/W), no integrated ball-grid array | Suitable for prototyping and low-volume PCBs with through-hole or wide-pitch SMT assembly | Select for manual soldering, debug boards, or legacy SSOP footprint compatibility |
| SN74LVTH162245DGGR | TSSOP-48 package (12.5 mm × 6.1 mm), same electrical specs, slightly higher propagation delay (max 4.6 ns A→B) | Better suited for space-constrained consumer electronics where fine-pitch BGA rework is impractical | Select when BGA reflow capability is unavailable but 3.3-V/5-V bridging and bus-hold remain required |
Compared with 74LVTH162245GRDR, the DLR variant offers easier assembly at the cost of thermal performance and board density, while the DGGR provides intermediate size and manufacturability trade-offs - the GRD package delivers optimal signal integrity and miniaturization for high-density automated production.
Availability
74LVTH162245GRDR is available at Aetrix Electronics and suitable for high-speed backplane interconnects, industrial PLC I/O modules, automotive infotainment gateways, and test equipment digital pattern generators requiring stable component supply and long-term lifecycle assurance.
Supply support for 74LVTH162245GRDR 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 high-reliability logic and interface solutions.
The 74LVTH162245GRDR belongs to TI's Widebus™ ABT logic family, engineered specifically for low-voltage, high-speed bidirectional bus interfacing in mixed-voltage systems where signal integrity, power efficiency, and hot-plug robustness are critical.
FAQ
What is the maximum operating temperature range for the 74LVTH162245GRDR?
The 74LVTH162245GRDR is rated for operation from –40°C to +85°C ambient temperature. This commercial-grade specification aligns with the SN74LVTH162245 product family and is validated across all electrical parameters in the datasheet under these conditions. The GRD package's thermal resistance (θJA = 36°C/W) supports reliable performance within this range when mounted on standard FR-4 PCBs with adequate copper pour.
Does the 74LVTH162245GRDR require external pull-up or pull-down resistors on its data inputs?
No, the 74LVTH162245GRDR does not require external pull-up or pull-down resistors on its A- or B-port data inputs because it includes active bus-hold circuitry. This internal feature maintains unused or undriven inputs at valid logic HIGH or LOW states with ±75 µA minimum holding current. Using external resistors with bus-hold enabled is explicitly discouraged in the datasheet as it may cause contention or excessive current draw.
Can the 74LVTH162245GRDR interface directly with 5-V logic while powered from a 3.3-V supply?
Yes, the 74LVTH162245GRDR supports direct 5-V interface while operating at 3.3-V VCC. Its inputs tolerate up to 5.5 V, and its outputs drive 5-V TTL loads with guaranteed VOH ≥ 2.4 V and VOL ≤ 0.55 V under full load. This mixed-mode capability eliminates external level shifters in systems integrating 3.3-V controllers with legacy 5-V peripherals - a core design objective of the ABT logic family.
What is the purpose of the NC (no-connect) balls on the 74LVTH162245GRDR GRD package?
The 74LVTH162245GRDR GRD package includes 12 NC (no internal connection) balls - specifically A2, A3, A4, A5, A6, B2, B5, B6, H2, H7, J2, and J7 - which have no silicon die connection. These balls must remain unconnected on the PCB layout. They serve mechanical stabilization, package symmetry, and manufacturing yield purposes but carry no electrical function. Connecting them risks short circuits or unintended coupling paths.
How does the 74LVTH162245GRDR support hot-insertion in backplane applications?
The 74LVTH162245GRDR supports hot-insertion via two integrated features: Ioff circuitry disables outputs when VCC = 0 V, blocking reverse current flow from live backplane traces into the unpowered device; and power-up 3-state forces outputs into high-impedance during power ramp-up (VCC < 1.5 V), preventing bus contention. Together, these ensure safe insertion/removal without disrupting other cards - a requirement verified per JESD78 latch-up and JESD22 ESD standards.
74LVTH162245GRDR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVTH
- Package/Case:
- 54-TFBGA
- 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:
- 54-BGA Microstar Junior (8x5.5)
74LVTH162245GRDR FAQ
1.How can I place an order for 74LVTH162245GRDR through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVTH162245GRDR 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 74LVTH162245GRDR reliable?
The price and inventory of 74LVTH162245GRDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVTH162245GRDR is usually 5 days.
3.What payment methods are accepted for 74LVTH162245GRDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVTH162245GRDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LVTH162245GRDR?
74LVTH162245GRDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVTH162245GRDR 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 74LVTH162245GRDR?
For technical support, including 74LVTH162245GRDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVTH162245GRDR requirements.
6.How does Aetrix verify that 74LVTH162245GRDR is sourced from the original manufacturer or authorized distributors?
All 74LVTH162245GRDR 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 74LVTH162245GRDR meets industry standards.
7.What is the process for return or replacement of 74LVTH162245GRDR?
All 74LVTH162245GRDR units undergo pre-shipment inspection (PSI). If there is an issue with 74LVTH162245GRDR, 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 74LVTH162245GRDR part is unused and in its original packaging.
Return procedure for 74LVTH162245GRDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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