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Texas Instruments SN74LVTH162245DLR
- Part No.:
- SN74LVTH162245DLR
- Manufacturer:
- Texas Instruments
- Package:
- 48-BSSOP (0.295", 7.50mm Width)
- Datasheet:
-
SN74LVTH162245DLR.pdf
- Description:
- IC TXRX NON-INVERT 3.6V 48SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,155
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Product details
Overview
SN74LVTH162245DLR 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 features 48-pin SSOP packaging, ±12 mA A-port drive capability, integrated 22-Ω series output resistors, and bus-hold circuitry eliminating external pullup/pulldown resistors. It enables bidirectional data flow between A and B buses in industrial backplane and memory interface applications.
For engineers reviewing the SN74LVTH162245DLR datasheet, SN74LVTH162245DLR pinout, SN74LVTH162245DLR application, or SN74LVTH162245DLR equivalent, this page delivers verified technical context, real-world timing performance (tPLH/tPHL ≤ 3.9 ns at VCC = 3.3 V), hot-insertion support via Ioff and power-up 3-state, and precise package-level design meaning for layout and thermal management.
Technical Context
The SN74LVTH162245DLR implements a dual-octal transceiver architecture with independent direction-control (DIR) and output-enable (OE) inputs per 8-bit section, enabling flexible A↔B or B↔A data routing. Its ABT (Advanced BiCMOS Technology) process delivers TTL-compatible input thresholds (VIH = 2 V, VIL = 0.8 V) while operating from 2.7 V to 3.6 V VCC.
It supports true mixed-mode interfacing: 5-V-tolerant inputs/outputs with 3.3-V supply, distributed VCC/GND pins to suppress high-speed switching noise, and flow-through pinout to minimize PCB trace crossovers. Bus-hold circuitry actively maintains valid logic states on undriven inputs without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.7 V to 3.6 V - supports unregulated battery operation down to 2.7 V without functional degradation |
| IOH/IOL (A port) | ±12 mA - sufficient to drive standard TTL loads directly without external buffers |
| IOH/IOL (B port) | –32 mA / +64 mA - higher drive strength for driving heavier capacitive loads on B-side buses |
| tPLH/tPHL (A→B) | ≤3.9 ns at VCC = 3.3 V, CL = 50 pF - enables >250 MHz data transfer in point-to-point links |
| VOL (B port, IOL = 64 mA) | ≤0.55 V - ensures robust low-state margin under full load across temperature range |
| Bus-Hold Current | ±75 µA min - provides reliable input state retention without external biasing components |
| Ioff (VCC = 0) | ±100 µA - prevents damaging backflow current during hot insertion or partial power-down |
Pinout & Package
SN74LVTH162245DLR uses a 48-pin SSOP (Shrink Small Outline Package) with 0.5-mm pitch, 12.6 mm × 6.1 mm body size, and 1.2 mm max height. The package includes distributed VCC and GND pins to reduce simultaneous switching noise and supports JEDEC MO-153 compliance.
| 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) | OE = L activates outputs; OE = H forces both A and B ports into high-impedance isolation |
| 1A1–1A8, 2A1–2A8 | A-port data inputs/outputs | Noninverting transceiver terminals with 22-Ω series resistance for overshoot suppression |
| 1B1–1B8, 2B1–2B8 | B-port data inputs/outputs | Noninverting transceiver terminals; B-port outputs support higher sink current (64 mA) |
| VCC, GND | Power and ground connections | Multiple distributed VCC/GND pairs minimize IR drop and ground bounce in high-speed switching |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 22-Ω series output resistors (A port) | Eliminates need for external termination resistors, reducing BOM count and PCB area in high-speed traces |
| Mixed-mode 5-V tolerant I/O with 3.3-V VCC | Enables direct interfacing between legacy 5-V logic and modern 3.3-V systems without level shifters |
| Active bus-hold on all data inputs | Maintains valid logic state on floating or undriven inputs, removing requirement for external pullup/pulldown resistors |
| Ioff and power-up 3-state support | Prevents current backflow and driver conflict during hot insertion or power sequencing in modular systems |
| Flow-through pinout architecture | Optimizes PCB layout by aligning A and B port signals on opposite sides, minimizing trace crossovers and layer count |
Applications
| Industrial Backplane Interface | Memory Subsystem Interconnect |
|---|---|
Use Scenario: Bidirectional data exchange between 3.3-V microcontroller and 5-V peripheral cards in modular PLC chassis. IC Role / Device Role / Timing Role: Level-translating bus transceiver managing A↔B data flow with independent DIR/OE control per octet. Use Value: Eliminates discrete level shifters and pull resistors while maintaining <4 ns propagation delay for deterministic cycle timing. |
Use Scenario: Isolating and translating address/data lines between 3.3-V SoC and 5-V SRAM or Flash memory modules. IC Role / Device Role / Timing Role: Dual-octal transceiver providing isolated, direction-controlled path with bus-hold for unused address bits. Use Value: Enables stable memory access under partial bus loading and hot-swap conditions without external biasing. |
| Test Equipment Signal Routing | Automated Test Fixture Interface |
Use Scenario: Reconfigurable signal path between 3.3-V FPGA controller and multiple 5-V DUT interfaces in ATE platforms. IC Role / Device Role / Timing Role: Programmable bus isolator with independent OE control per 8-bit segment for dynamic channel selection. Use Value: Supports sub-5 ns timing margins and hot-swappable module detection via Ioff-enabled safe power-down. |
Use Scenario: Interfacing 3.3-V test controller to legacy 5-V sensor array in production line fixtures. IC Role / Device Role / Timing Role: Robust transceiver with distributed power/ground pins suppressing noise in electrically noisy factory environments. Use Value: Delivers consistent VOL ≤ 0.55 V under full 64 mA B-port load, ensuring reliable logic recognition despite EMI. |
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 |
|---|---|---|---|
| SN74LVC162245DGGR | Lower drive strength (±24 mA B-port), no integrated 22-Ω resistors, 1.65–3.6 V VCC range | Better suited for lower-power, single-supply 3.3-V-only systems without 5-V tolerance requirements | Select when cost and power efficiency outweigh 5-V interface needs and external termination is acceptable |
| SN74ALVCH162245GRDR | Higher speed (tPLH ≤ 2.8 ns), 2.3–3.6 V VCC, no bus-hold, FBGA-56 package | Targeted at space-constrained, high-density PCBs requiring minimal propagation delay in 3.3-V-only designs | Select for ultra-high-speed applications where board area and thermal profile favor FBGA over SSOP |
Compared with SN74LVC162245DGGR and SN74ALVCH162245GRDR, the SN74LVTH162245DLR uniquely combines 5-V tolerance, integrated output resistors, and bus-hold in a through-hole-compatible SSOP package-making it optimal for mixed-voltage industrial backplanes requiring field-serviceability and noise resilience.
Availability
SN74LVTH162245DLR is available at Aetrix Electronics and suitable for industrial backplane interfaces, memory subsystem interconnects, and automated test equipment requiring stable component supply, long-term lifecycle support, and RoHS-compliant manufacturing.
Supply support for SN74LVTH162245DLR 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 experience in high-reliability logic and interface solutions.
The SN74LVTH162245DLR belongs to TI's Widebus™ family of advanced bus transceivers, engineered specifically for robust mixed-voltage system integration in industrial, telecom, and test equipment where signal integrity, hot-swap safety, and layout efficiency are critical.
FAQ
What is the maximum operating temperature range for SN74LVTH162245DLR?
The SN74LVTH162245DLR is rated for operation from –40°C to +85°C ambient temperature. This industrial-grade temperature range ensures reliable performance in demanding environments such as factory automation controllers, base station equipment, and programmable logic chassis where thermal stability is essential. The device maintains specified timing and drive characteristics across this full range.
Does SN74LVTH162245DLR support hot insertion?
Yes, SN74LVTH162245DLR supports hot insertion via two key features: Ioff circuitry disables outputs when VCC = 0, preventing damaging current backflow; and power-up 3-state places outputs in high-impedance during power ramp-up/down. These features are fully characterized per JESD78 and validated in TI's production testing for use in modular backplane systems.
Can SN74LVTH162245DLR interface between 3.3-V and 5-V logic without external level shifters?
Yes, SN74LVTH162245DLR supports mixed-mode operation: its inputs tolerate up to 5.5 V regardless of VCC, and its outputs drive 5-V logic levels while powered from 3.3 V. This eliminates the need for discrete level-shifting components in systems connecting 3.3-V processors to legacy 5-V peripherals or memory devices.
What is the purpose of the 22-Ω series resistors on the A-port outputs of SN74LVTH162245DLR?
The 22-Ω series resistors integrated into the A-port outputs of SN74LVTH162245DLR suppress transmission-line overshoot and undershoot in high-speed PCB traces. They provide controlled impedance matching without requiring external components, reducing EMI, improving signal integrity, and simplifying layout-especially in point-to-point or short-bus topologies.
How does bus-hold functionality work on SN74LVTH162245DLR, and when should it be used?
SN74LVTH162245DLR includes active bus-hold circuitry on all data inputs that maintains a valid logic state (HIGH or LOW) when inputs are floating or undriven. It sources/sinks ±75 µA to hold the last valid state, eliminating the need for external pullup/pulldown resistors-ideal for sparing I/O pins and reducing component count in systems with configurable or partially populated buses.
SN74LVTH162245DLR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVTH
- Package/Case:
- 48-BSSOP (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
- 48-SSOP
SN74LVTH162245DLR FAQ
1.How can I place an order for SN74LVTH162245DLR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVTH162245DLR 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 SN74LVTH162245DLR reliable?
The price and inventory of SN74LVTH162245DLR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVTH162245DLR is usually 5 days.
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SN74LVTH162245DLR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LVTH162245DLR 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 SN74LVTH162245DLR?
For technical support, including SN74LVTH162245DLR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVTH162245DLR requirements.
6.How does Aetrix verify that SN74LVTH162245DLR is sourced from the original manufacturer or authorized distributors?
All SN74LVTH162245DLR 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 SN74LVTH162245DLR meets industry standards.
7.What is the process for return or replacement of SN74LVTH162245DLR?
All SN74LVTH162245DLR units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVTH162245DLR, 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 SN74LVTH162245DLR part is unused and in its original packaging.
Return procedure for SN74LVTH162245DLR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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