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Texas Instruments 74LVTH162245GRE4
- Part No.:
- 74LVTH162245GRE4
- Manufacturer:
- Texas Instruments
- Package:
- 48-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
74LVTH162245GRE4.pdf
- Description:
- 3.3-V ABT 16-BIT BUS TRANSCEIVER
- Quantity:
- Payment:
- Shipping:
Inventory:3,601
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Product details
Overview
74LVTH162245GRE4 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 integrated 22-Ω series resistors on A-port outputs, and operates across –40°C to 85°C. It enables bidirectional data flow between A and B buses in industrial backplanes and memory interface subsystems.
For engineers reviewing the 74LVTH162245GRE4 datasheet, 74LVTH162245GRE4 pinout, 74LVTH162245GRE4 application, or 74LVTH162245GRE4 equivalent, this page delivers verified technical context, real-world timing behavior (tPLH/tPHL ≤ 3.9 ns at VCC = 3.3 V), bus-hold input logic, and validated alternatives for 3.3-V/5-V level translation in high-density PCB layouts.
Technical Context
The 74LVTH162245GRE4 implements a dual-octal transceiver architecture with independent DIR/OE controls per 8-bit section, enabling flexible A↔B or B↔A data routing. Its ABT (Advanced BiCMOS Technology) core integrates bus-hold circuitry on all A/B inputs and 22-Ω series termination on A-port outputs to suppress overshoot without external components.
It supports unregulated battery operation down to 2.7 V, exhibits <0.8 V typical output ground bounce (VOLP), and guarantees hot-insertion safety via Ioff (±100 µA at VCC = 0) and power-up 3-state. The device remains in high-impedance state when VCC is below 1.5 V, and OE must be pulled up externally above that threshold for guaranteed isolation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Supply Range | 2.7 V to 3.6 V - supports wide-input battery rails and tolerates supply droop during system startup |
| IOH/IOL (A port) | –12 mA / 12 mA - sufficient drive strength for TTL-compatible loads without external buffers |
| IOH/IOL (B port) | –32 mA / 64 mA - higher sink capability for driving legacy 5-V logic or terminated lines |
| tPLH/tPHL (A→B) | ≤3.9 ns at VCC = 3.3 V, CL = 50 pF - enables sub-250-MHz bus operation in synchronous interfaces |
| Bus-Hold Current | ±75 µA minimum at VCC = 3 V - actively holds floating inputs at valid logic levels, eliminating pullup/pulldown resistors |
| VIL/VIH Thresholds | 0.8 V / 2.0 V - compatible with both 3.3-V LVTTL and 5-V TTL input thresholds |
| ESD Protection | 2000-V HBM, 200-V MM, 1000-V CDM - meets industrial handling requirements without additional protection circuitry |
Pinout & Package
TSSOP-48 package (DGG), 12.6 mm × 6.1 mm × 1.2 mm max height, lead-free NiPdAu finish, MSL Level-1, 2000-piece tape-and-reel.
| 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; enables independent bidirectional control of each octal bank |
| 1OE, 2OE | Output-enable input (per 8-bit section) | Low = enable outputs; High = force 3-state isolation; supports partial bus shutdown without affecting other channels |
| 1A1–1A8, 2A1–2A8 | A-port data I/Os | Noninverting inputs/outputs with 22-Ω series resistance - reduce EMI and eliminate need for external termination |
| 1B1–1B8, 2B1–2B8 | B-port data I/Os | Noninverting inputs/outputs with full 5-V tolerant input structure - interface directly to legacy 5-V buses |
| VCC, GND | Power and ground terminals | Distributed across package (12× VCC, 12× GND) - minimizes simultaneous switching noise and improves signal integrity |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 22-Ω A-port series resistors | Eliminates external termination components and reduces PCB layout complexity for high-speed traces |
| Mixed-mode 5-V input tolerance | Accepts 5-V signals on all A/B inputs while operating at 3.3-V VCC - enables seamless interfacing with older 5-V logic families |
| Hot-insertion support (Ioff + power-up 3-state) | Prevents backdrive current and bus contention during live board insertion - critical for modular backplane systems |
| Active bus-hold on all data inputs | Maintains valid logic states on unused or undriven pins - removes need for external pullup/pulldown resistors and saves board space |
| Flow-through pinout architecture | Input and output pins aligned on opposite sides - simplifies layer routing and reduces trace crossovers in dense PCB designs |
Applications
| Industrial Backplane Interface | Memory Subsystem Translation |
|---|---|
Use Scenario: Bidirectional data transfer between 3.3-V FPGA controller and 5-V legacy peripheral cards in modular PLC chassis. IC Role / Device Role / Timing Role: Dual-octal transceiver managing A↔B direction per slot, with DIR/OE controlled by FPGA GPIO for per-slot arbitration. Use Value: Eliminates discrete level shifters and termination resistors; bus-hold prevents floating inputs during card hot-swap; tPLH ≤ 3.9 ns sustains 200+ MHz backplane clocking. |
Use Scenario: Interfacing 3.3-V SoC memory controller to 5-V SRAM modules in embedded test equipment. IC Role / Device Role / Timing Role: 16-bit unidirectional translator (A→B mode) with 22-Ω A-port series resistors damping edge rates on address/data lines. Use Value: Reduces signal reflections and EMI without external RC networks; 64-mA B-port sink drives SRAM inputs reliably; VOL ≤ 0.55 V ensures TTL logic low margin. |
| Automotive Diagnostic Gateway | Communications Module Bus Isolation |
Use Scenario: Isolating CAN/FlexRay microcontroller I/O from 5-V sensor interface ICs in vehicle diagnostic tools. IC Role / Device Role / Timing Role: 3-state enabled transceiver acting as programmable buffer between MCU and external sensor bus, with OE tied to MCU reset signal. Use Value: Power-up 3-state prevents bus conflict during MCU boot; Ioff blocks leakage when MCU is powered down; –40°C to 85°C rating matches automotive ambient range. |
Use Scenario: Segmenting high-noise RF module data bus from baseband processor in cellular IoT gateways. IC Role / Device Role / Timing Role: Dual-section isolator using separate DIR/OE controls to decouple transmit/receive paths and prevent cross-talk. Use Value: Distributed VCC/GND pins suppress switching noise coupling; 0.8 V typical VOLP maintains signal fidelity; flow-through layout eases RF-sensitive routing separation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC162245DGGR | Lower drive (24 mA B-port sink), no bus-hold, 1.65–3.6 V VCC range | Suitable for cost-sensitive 3.3-V-only systems without 5-V interface needs | Select when 5-V tolerance and bus-hold are unnecessary and lower ICC is prioritized |
| 74ALVC162245DGG | Higher speed (tPLH ≤ 2.8 ns), same 3.3-V VCC, no bus-hold, 1.65–3.6 V range | Better for high-frequency memory interfaces where 5-V compatibility is not required | Choose when maximum propagation speed is critical and mixed-voltage operation is absent |
Compared with SN74LVC162245DGGR and 74ALVC162245DGG, the 74LVTH162245GRE4 uniquely combines 5-V input tolerance, active bus-hold, and hot-insertion support - making it the only option among the three qualified for legacy system upgrades requiring zero-layout changes and robust live-insert reliability.
Availability
74LVTH162245GRE4 is available at Aetrix Electronics and suitable for industrial backplanes, automotive diagnostic gateways, memory subsystems, and communications module isolation requiring stable component supply and long-term production continuity.
Supply support for 74LVTH162245GRE4 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 logic solutions, with over 50 years of innovation in high-reliability interface and power management ICs.
The 74LVTH162245GRE4 belongs to TI's Widebus™ family of advanced bus transceivers, engineered specifically for mixed-voltage system integration, hot-plug resilience, and high-density PCB layout optimization in industrial and automotive infrastructure.
FAQ
What is the maximum operating temperature range for the 74LVTH162245GRE4?
The 74LVTH162245GRE4 is rated for operation from –40°C to +85°C, matching industrial-grade environmental requirements. This range is confirmed in the Recommended Operating Conditions table of the official TI datasheet SCBS260Q, and applies specifically to the DGG-package variant including the 74LVTH162245GRE4 orderable part number.
Does the 74LVTH162245GRE4 support true 5-V tolerant inputs?
Yes, the 74LVTH162245GRE4 accepts input voltages up to 5.5 V on all A and B port pins while operating at VCC = 2.7–3.6 V. This is explicitly specified in the Recommended Operating Conditions table (VI = 5.5 V) and enables direct connection to 5-V TTL logic without external level-shifting circuitry.
How does the bus-hold feature function on the 74LVTH162245GRE4?
The 74LVTH162245GRE4 includes active bus-hold circuitry on all A and B port inputs, maintaining unused or undriven pins at valid logic HIGH or LOW states with ±75 µA minimum holding current. This eliminates the need for external pullup or pulldown resistors and prevents floating inputs from causing excess ICC or erratic behavior.
Can the 74LVTH162245GRE4 be used in hot-swap applications?
Yes, the 74LVTH162245GRE4 supports hot insertion via two dedicated features: Ioff circuitry limits current to ±100 µA when VCC = 0, preventing damaging backflow; and power-up 3-state forces outputs into high-impedance during power ramp-up/down, avoiding bus contention - both verified per JESD78 and TI application reports.
What package type and dimensions does the 74LVTH162245GRE4 use?
The 74LVTH162245GRE4 uses a TSSOP-48 (DGG) package measuring 12.6 mm × 6.1 mm × 1.2 mm max height, with 0.5-mm lead pitch and NiPdAu lead finish. Mechanical drawings confirm compliance with JEDEC MO-153, and tape-and-reel packaging supports automated SMT assembly with 2000 units per reel.
74LVTH162245GRE4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVTH
- Package/Case:
- 48-TFSOP (0.240", 6.10mm 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:
- 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-TSSOP
74LVTH162245GRE4 FAQ
1.How can I place an order for 74LVTH162245GRE4 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVTH162245GRE4 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 74LVTH162245GRE4 reliable?
The price and inventory of 74LVTH162245GRE4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVTH162245GRE4 is usually 5 days.
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We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVTH162245GRE4 transactions.
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4.How is shipping managed for 74LVTH162245GRE4?
74LVTH162245GRE4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVTH162245GRE4 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 74LVTH162245GRE4?
For technical support, including 74LVTH162245GRE4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVTH162245GRE4 requirements.
6.How does Aetrix verify that 74LVTH162245GRE4 is sourced from the original manufacturer or authorized distributors?
All 74LVTH162245GRE4 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 74LVTH162245GRE4 meets industry standards.
7.What is the process for return or replacement of 74LVTH162245GRE4?
All 74LVTH162245GRE4 units undergo pre-shipment inspection (PSI). If there is an issue with 74LVTH162245GRE4, 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 74LVTH162245GRE4 part is unused and in its original packaging.
Return procedure for 74LVTH162245GRE4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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