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Texas Instruments 74LVTH16245ADGGRG4
- Part No.:
- 74LVTH16245ADGGRG4
- Manufacturer:
- Texas Instruments
- Package:
- 48-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
74LVTH16245ADGGRG4.pdf
- Description:
- IC TXRX NON-INVERT 3.6V 48TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,822
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Product details
Overview
74LVTH16245ADGGRG4 from Texas Instruments is a 3.3-V ABT 16-bit noninverting bus transceiver with 3-state outputs, dual-octal architecture, and bus-hold inputs. It supports mixed-mode 5-V/3.3-V interfacing, operates down to 2.7 V, and delivers ±64 mA output drive at VCC = 3.3 V for high-noise-margin data routing in backplane and motherboard interconnects.
For engineers reviewing the 74LVTH16245ADGGRG4 datasheet, 74LVTH16245ADGGRG4 pinout, 74LVTH16245ADGGRG4 application, or 74LVTH16245ADGGRG4 equivalent, key selection criteria include its 48-pin TSSOP package, 3.3-V ABT logic family compatibility, hot-insertion support via Ioff and power-up 3-state, and flow-through pinout for optimized PCB layout in high-density digital systems.
Technical Context
The 74LVTH16245ADGGRG4 implements an advanced BiCMOS (ABT) process enabling low static power dissipation while maintaining TTL-compatible input thresholds and 5-V-tolerant I/Os. Its dual-octal structure allows independent direction control per 8-bit port via DIR pins and separate 3-state enable via OE pins.
It features distributed VCC/GND pins to suppress high-speed switching noise, active bus-hold circuitry eliminating external pull resistors, and guaranteed operation across –40°C to +85°C with supply voltage from 2.7 V to 3.6 V - supporting unregulated battery-powered and mixed-voltage system designs.
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 power rail conditions |
| IOL / IOH | 64 mA / –32 mA at VCC = 3.3 V - drives heavy capacitive loads and multiple TTL inputs without external buffers |
| tPLH / tPHL | 2.3 ns / 2.1 ns typical at VCC = 3.3 V, CL = 50 pF - supports >200 MHz data transfer rates in synchronous bus applications |
| Bus-Hold Current | ±75 µA minimum at VCC = 3.6 V - maintains valid logic state on floating data lines without external biasing |
| Ioff | ±100 µA max at VCC = 0 V - prevents backflow current during hot insertion or partial power-down |
| Input Voltage Tolerance | 0 V to 5.5 V - allows direct connection to 5-V logic without level-shifting components |
| Thermal Impedance θJA | 70 °C/W (DGG package) - defines maximum power dissipation limit under natural convection cooling |
Pinout & Package
TSSOP-48 (DGG) package: 12.6 mm × 6.2 mm × 1.2 mm body, 0.5 mm pitch, lead-free NiPdAu finish, JEDEC MO-153 compliant, moisture sensitivity level 1 (260°C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1DIR, 2DIR | Direction control input (active-high) | Selects data flow direction per 8-bit port: DIR = L → B→A; DIR = H → A→B |
| 1OE, 2OE | Output enable input (active-low) | Drives corresponding port into high-impedance when high; enables outputs when low |
| 1A1–1A8, 2A1–2A8 | A-port data I/O | Noninverting bidirectional data terminals for first and second octal bus segments |
| 1B1–1B8, 2B1–2B8 | B-port data I/O | Noninverting bidirectional data terminals paired with respective A-port channels |
| VCC, GND | Power supply and ground | Distributed across package (12× VCC, 12× GND) to minimize simultaneous switching noise |
Key Features
| Feature | Design Value |
|---|---|
| Mixed-mode I/O tolerance | 5-V input/output compatibility with 3.3-V VCC - eliminates external level shifters in 3.3/5-V hybrid systems |
| Flow-through pinout | Linear A/B port mapping (e.g., A1–B1 adjacent) - reduces trace crossovers and improves signal integrity in dense layouts |
| Bus-hold circuitry | Active on all A/B port inputs - removes need for external pullup/pulldown resistors and saves board space |
| Hot-insertion support | Ioff + power-up 3-state - prevents damaging current flow and bus contention during live card replacement |
| Distributed power delivery | 12 VCC and 12 GND pins - lowers impedance path for transient currents and reduces ground bounce (VOLP < 0.8 V) |
Applications
| Backplane Interconnect | Industrial PLC Backplane |
|---|---|
Use Scenario: Bidirectional data routing between CPU module and I/O expansion cards in modular rack systems. IC Role / Device Role / Timing Role: Level-translating bus transceiver managing asynchronous communication between 3.3-V controller and legacy 5-V peripheral modules. Use Value: Enables seamless integration of mixed-voltage subsystems without redesigning power domains or adding discrete level shifters. | Use Scenario: Isolating and buffering fieldbus data paths (e.g., Profibus DP) between processor and isolated I/O banks. IC Role / Device Role / Timing Role: High-drive 3-state transceiver providing robust signal integrity across long traces and noisy industrial environments. Use Value: Delivers 64 mA sink current to overcome cable capacitance and EMI-induced voltage drops, ensuring reliable bit-level transmission. |
| Memory Subsystem Buffer | Test Equipment Bus Interface |
Use Scenario: Driving address/data buses between FPGA-based memory controller and DDR SDRAM modules operating at 3.3-V logic levels. IC Role / Device Role / Timing Role: Low-propagation-delay (2.1 ns typ.) transceiver synchronizing parallel memory access with minimal timing skew. Use Value: Meets tight setup/hold windows for high-speed memory interfaces while suppressing ground bounce via distributed VCC/GND pins. | Use Scenario: Interfacing automated test equipment (ATE) mainframe with modular instrument cards requiring hot-swappable connectivity. IC Role / Device Role / Timing Role: Hot-plug-capable transceiver enabling live insertion/removal of measurement modules without system reset. Use Value: Ioff protection prevents backfeed into powered-down modules, and power-up 3-state avoids bus conflicts during card initialization. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC16245ADGGR | LVC family: lower drive (24 mA), no bus-hold, 1.65–3.6 V VCC range | Suitable for low-power, single-supply 3.3-V-only systems without 5-V tolerance requirements | Choose when cost and power efficiency outweigh 5-V interface needs and bus-hold functionality |
| 74ALVCH16245DLR | ALVCH family: 2.3–3.6 V VCC, higher speed (tPD = 1.9 ns), no Ioff or bus-hold | Optimized for high-speed, low-voltage-only applications where hot insertion is not required | Prefer when maximum propagation speed is critical and system supports controlled power sequencing |
Compared with SN74LVC16245ADGGR and 74ALVCH16245DLR, the 74LVTH16245ADGGRG4 uniquely combines 5-V-tolerant I/O, integrated bus-hold, and Ioff-enabled hot insertion - making it the only option among the three qualified for mixed-voltage, hot-swap, and resistorless-bus designs.
Availability
74LVTH16245ADGGRG4 is available at Aetrix Electronics and suitable for industrial PLC backplanes, test equipment bus interfaces, memory subsystem buffers, and backplane interconnects requiring stable component supply across extended temperature and mixed-voltage operation.
Supply support for 74LVTH16245ADGGRG4 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 and embedded processing solutions, with over 90 years of innovation in logic, power management, and signal chain technologies.
The 74LVTH16245ADGGRG4 belongs to TI's Widebus™ ABT logic family, engineered specifically for high-speed, low-noise, mixed-voltage bus interfacing in industrial, communications, and computing infrastructure.
FAQ
What is the maximum operating temperature range for the 74LVTH16245ADGGRG4?
The 74LVTH16245ADGGRG4 is rated for operation from –40°C to +85°C, meeting industrial-grade thermal requirements. This range is validated across all electrical specifications including propagation delay, output drive strength, and bus-hold performance - ensuring reliability in fanless enclosures and thermally constrained embedded systems where the 74LVTH16245ADGGRG4 serves as a critical bus interface component.
Does the 74LVTH16245ADGGRG4 support hot insertion, and how is it implemented?
Yes, the 74LVTH16245ADGGRG4 supports hot insertion via two integrated features: Ioff circuitry disables outputs when VCC = 0 V to block reverse current flow, and power-up 3-state holds outputs in high-impedance during power ramp-up/down. These mechanisms prevent bus contention and backfeeding - essential for safe live replacement of modules where the 74LVTH16245ADGGRG4 manages inter-card data paths.
Can the 74LVTH16245ADGGRG4 interface directly with 5-V logic devices?
Yes, the 74LVTH16245ADGGRG4 accepts 0 V to 5.5 V input voltages and tolerates 5-V signals on both A and B ports while operating at 3.3-V VCC. Its ABT input structure ensures TTL-compatible thresholds (VIH = 2.0 V, VIL = 0.8 V), allowing direct connection to legacy 5-V microcontrollers, FPGAs, or peripherals without external level shifters - a core capability leveraged by the 74LVTH16245ADGGRG4 in mixed-voltage system integration.
What is the purpose of the bus-hold feature on the 74LVTH16245ADGGRG4, and how does it affect design?
The bus-hold circuitry on the 74LVTH16245ADGGRG4 actively maintains unused or undriven A/B port inputs at their last-valid logic state using ±75 µA dynamic hold current. This eliminates the need for external pullup/pulldown resistors, reducing BOM count, PCB area, and potential signal integrity issues - a key advantage in compact, high-channel-count applications where the 74LVTH16245ADGGRG4 routes multiple parallel data buses.
How does the flow-through architecture of the 74LVTH16245ADGGRG4 improve PCB layout?
The 74LVTH16245ADGGRG4 uses a flow-through pinout (e.g., A1 adjacent to B1, A2 to B2) that enables straight-line trace routing between matched data pairs. This minimizes layer transitions, vias, and crosstalk - improving signal integrity and simplifying layout in high-density backplanes and motherboards where the 74LVTH16245ADGGRG4 serves as a primary bus bridge component.
74LVTH16245ADGGRG4 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:
- Discontinued at Digi-Key
- 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
74LVTH16245ADGGRG4 FAQ
1.How can I place an order for 74LVTH16245ADGGRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVTH16245ADGGRG4 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 74LVTH16245ADGGRG4 reliable?
The price and inventory of 74LVTH16245ADGGRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVTH16245ADGGRG4 is usually 5 days.
3.What payment methods are accepted for 74LVTH16245ADGGRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVTH16245ADGGRG4 transactions.
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4.How is shipping managed for 74LVTH16245ADGGRG4?
74LVTH16245ADGGRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVTH16245ADGGRG4 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 74LVTH16245ADGGRG4?
For technical support, including 74LVTH16245ADGGRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVTH16245ADGGRG4 requirements.
6.How does Aetrix verify that 74LVTH16245ADGGRG4 is sourced from the original manufacturer or authorized distributors?
All 74LVTH16245ADGGRG4 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 74LVTH16245ADGGRG4 meets industry standards.
7.What is the process for return or replacement of 74LVTH16245ADGGRG4?
All 74LVTH16245ADGGRG4 units undergo pre-shipment inspection (PSI). If there is an issue with 74LVTH16245ADGGRG4, 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 74LVTH16245ADGGRG4 part is unused and in its original packaging.
Return procedure for 74LVTH16245ADGGRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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