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Home > Products > Integrated Circuits (ICs) > Logic > Buffers, Drivers, Receivers, Transceivers

Texas Instruments SN74LVT16245BDGGR

Name: SN74LVT16245BDGGR
Brand: Texas Instruments
SKU: SN74LVT16245BDGGR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SN74LVT16245BDGGR

Manufacturer:: Texas Instruments

Category:: Buffers, Drivers, Receivers, Transceivers

Package:: 48-TFSOP (0.240", 6.10mm Width)

Datasheet:: SN74LVT16245BDGGR.pdf

Description:: IC TXRX NON-INVERT 3.6V 48TSSOP

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Product details

Overview

SN74LVT16245BDGGR from Texas Instruments is a 3.3-V ABT 16-bit dual-octal noninverting bus transceiver with 3-state outputs, designed for asynchronous bidirectional data transfer between two 16-bit buses. It supports mixed-mode operation (5-V inputs/outputs with 3.3-V V_CC), delivers ±64 mA output drive at 3.3 V, and features I_off and power-up 3-state for hot insertion in backplane or modular systems.

For engineers reviewing the SN74LVT16245BDGGR datasheet, SN74LVT16245BDGGR pinout, SN74LVT16245BDGGR application, or SN74LVT16245BDGGR equivalent, key selection considerations include its TSSOP-48 package, 2.7–3.6 V supply range, 3.3 ns typical propagation delay (t_PLH/t_PHL), and compatibility with TTL-level interfaces in 5-V legacy subsystems.

Technical Context

The SN74LVT16245BDGGR implements a flow-through architecture with distributed V_CC/GND pins to suppress high-speed switching noise. Its DIR and OE control logic enables independent direction selection per octal section: when 1DIR = LOW and 1OE = LOW, data flows from B-port to A-port; when 1DIR = HIGH and 1OE = LOW, data flows from A-port to B-port.

It integrates Advanced BiCMOS Technology (ABT) for low static power dissipation and robust ESD protection (2000-V HBM, 200-V MM). The device enters high-impedance state during power-up/down when V_CC is below 1.5 V, and supports unregulated battery operation down to 2.7 V.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CC Range	2.7 V to 3.6 V - Enables stable operation across industrial-grade voltage tolerances and battery droop scenarios.
I_OL / I_OH	64 mA / –32 mA - Sufficient drive strength to interface directly with multiple TTL loads without external buffers.
t_PLH/t_PHL	3.3 ns (typ, V_CC = 3.3 V) - Supports >150 MHz bus toggle rates in point-to-point or lightly loaded stubbed topologies.
V_IH/V_IL	2.0 V / 0.8 V - Compatible with standard 5-V TTL logic thresholds while powered from 3.3 V.
V_O Range	–0.5 V to 7 V - Allows safe interfacing with 5-V signal domains without level shifters or clamping diodes.
θ_JA	70 °C/W - Thermal performance suitable for continuous operation in compact PCB layouts with moderate airflow.
I_off	±100 µA (V_CC = 0) - Prevents backflow current during hot-swap events, protecting upstream drivers and power rails.

Pinout & Package

TSSOP-48 package (DGG), 12.6 mm × 6.1 mm × 1.2 mm max height, JEDEC MO-153 compliant, with exposed pad not connected internally.

Pin/Terminal	Circuit Role	Design Meaning
1DIR, 2DIR	Direction control input (per octal section)	Determines data flow direction: LOW = B→A, HIGH = A→B; enables independent control of each 8-bit channel.
1OE, 2OE	Output-enable input (active LOW)	Places corresponding 8-bit port outputs into high-impedance state when HIGH; supports isolation and bus sharing.
1A1–1A8, 2A1–2A8	A-port data inputs/outputs	Bi-directional I/O pins for first and second 8-bit bus segment; always active (no internal 3-state on inputs).
1B1–1B8, 2B1–2B8	B-port data inputs/outputs	Bi-directional I/O pins mirroring A-port functionality; electrically identical with symmetrical timing specs.
V_CC (Pins 7, 16, 25, 34, 43)	Power supply	Distributed supply connections minimize IR drop and ground bounce across high-speed switching events.
GND (Pins 4, 13, 22, 31, 40)	Ground reference	Multiple GND pins adjacent to V_CC reduce loop inductance and improve signal integrity at >100 MHz edges.

Key Features

Feature	Design Value
Mixed-mode 5-V/3.3-V interface	Accepts 5-V TTL inputs and drives 5-V loads while operating from 3.3-V V_CC, eliminating need for external level translators.
Hot-insertion support	I_off circuitry disables outputs at V_CC = 0, preventing damaging back-current during live board replacement.
Flow-through pinout	A- and B-port pins aligned linearly (e.g., A1/B1 adjacent) simplifies layer routing and reduces trace skew in parallel bus layouts.
Low ground bounce (V_OLP)	Typical <0.8 V at V_CC = 3.3 V - Maintains noise margin under simultaneous switching output (SSO) conditions.
Latch-up immunity	Exceeds 100 mA per JESD 78 Class II - Ensures robustness against transient overvoltage and ESD-induced latch-up.

Applications

Backplane Data Routing	Modular I/O Expansion
Use Scenario: Bidirectional data exchange between CPU module and peripheral carrier board in a 19-inch rack system with hot-swap capability. IC Role / Device Role / Timing Role: SN74LVT16245BDGGR acts as a voltage-translating bus buffer, isolating 3.3-V processor domain from 5-V legacy I/O cards while maintaining timing alignment across 16-bit data paths. Use Value: Eliminates discrete level-shifter ICs and reduces BOM count by enabling direct interconnection between mixed-voltage subsystems.	Use Scenario: Adding FPGA-based digital I/O expansion to an industrial PLC main controller via a mezzanine connector. IC Role / Device Role / Timing Role: SN74LVT16245BDGGR serves as a configurable transceiver, allowing the FPGA to read sensor data from legacy 5-V parallel interfaces and drive 5-V actuator outputs using a single 3.3-V supply rail. Use Value: Provides deterministic 3.3 ns propagation delay and 64 mA drive to meet real-time I/O response requirements without external buffering.
Memory Subsystem Bridging	Test Equipment Bus Interface
Use Scenario: Interfacing a 3.3-V SoC memory controller to a 5-V SRAM bank in embedded instrumentation with strict power budget constraints. IC Role / Device Role / Timing Role: SN74LVT16245BDGGR functions as a bi-directional address/data bus translator, enabling burst-mode memory access while maintaining setup/hold timing margins. Use Value: Delivers 64 mA sink current to drive heavy capacitive loads of long SRAM address traces, reducing signal rise/fall time degradation.	Use Scenario: Integrating a 3.3-V microcontroller-based test sequencer with legacy 5-V GPIB or parallel port peripherals in automated test equipment. IC Role / Device Role / Timing Role: SN74LVT16245BDGGR operates as a programmable bus coupler, dynamically reconfiguring data path direction during handshake sequences without firmware overhead. Use Value: Supports hot-plug detection via I_off and power-up 3-state, allowing safe insertion/removal of test modules during system runtime.

Backplane Data Routing

Modular I/O Expansion

Use Scenario: Bidirectional data exchange between CPU module and peripheral carrier board in a 19-inch rack system with hot-swap capability.

IC Role / Device Role / Timing Role: SN74LVT16245BDGGR acts as a voltage-translating bus buffer, isolating 3.3-V processor domain from 5-V legacy I/O cards while maintaining timing alignment across 16-bit data paths.

Use Value: Eliminates discrete level-shifter ICs and reduces BOM count by enabling direct interconnection between mixed-voltage subsystems.

Use Scenario: Adding FPGA-based digital I/O expansion to an industrial PLC main controller via a mezzanine connector.

IC Role / Device Role / Timing Role: SN74LVT16245BDGGR serves as a configurable transceiver, allowing the FPGA to read sensor data from legacy 5-V parallel interfaces and drive 5-V actuator outputs using a single 3.3-V supply rail.

Use Value: Provides deterministic 3.3 ns propagation delay and 64 mA drive to meet real-time I/O response requirements without external buffering.

Memory Subsystem Bridging

Test Equipment Bus Interface

Use Scenario: Interfacing a 3.3-V SoC memory controller to a 5-V SRAM bank in embedded instrumentation with strict power budget constraints.

IC Role / Device Role / Timing Role: SN74LVT16245BDGGR functions as a bi-directional address/data bus translator, enabling burst-mode memory access while maintaining setup/hold timing margins.

Use Value: Delivers 64 mA sink current to drive heavy capacitive loads of long SRAM address traces, reducing signal rise/fall time degradation.

Use Scenario: Integrating a 3.3-V microcontroller-based test sequencer with legacy 5-V GPIB or parallel port peripherals in automated test equipment.

IC Role / Device Role / Timing Role: SN74LVT16245BDGGR operates as a programmable bus coupler, dynamically reconfiguring data path direction during handshake sequences without firmware overhead.

Use Value: Supports hot-plug detection via I_off and power-up 3-state, allowing safe insertion/removal of test modules during system runtime.

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
SN74LVTH16245ADGGR	Lower drive (±32 mA), higher t_PD (5.5 ns typ), LVTH family - no I_off or hot-insertion support.	Suitable only for static, non-hot-swap 3.3-V-only systems with relaxed timing and lower fanout.	Select SN74LVTH16245ADGGR only if cost sensitivity outweighs hot-swap requirement and drive strength needs are ≤32 mA.
74ALVC16245PW,118	3.3-V only (no 5-V tolerance), smaller TSSOP-48 footprint (10.2 mm × 5.3 mm), ±24 mA drive.	Applicable in space-constrained, single-supply 3.3-V designs where 5-V interoperability is unnecessary.	Choose 74ALVC16245PW,118 when board area is critical and mixed-voltage operation is not required.

Compared with SN74LVTH16245ADGGR and 74ALVC16245PW,118, the SN74LVT16245BDGGR uniquely combines 5-V-tolerant I/O, 64 mA drive, and certified hot-insertion capability - making it the only option among the three qualified for dynamic backplane and modular system architectures.

Availability

SN74LVT16245BDGGR is available at Aetrix Electronics and suitable for industrial backplanes, modular I/O systems, and memory subsystem bridging requiring stable component supply, long-term lifecycle assurance, and full traceability.

Supply support for SN74LVT16245BDGGR 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 decades of heritage in high-reliability interface and bus technology.

The SN74LVT16245BDGGR belongs to TI's Widebus™ ABT family, engineered specifically for high-speed, low-noise bidirectional data transfer in mixed-voltage industrial and telecom infrastructure applications.

FAQ

What is the maximum operating temperature range for the SN74LVT16245BDGGR?

The SN74LVT16245BDGGR is rated for operation from –40°C to +85°C ambient temperature, meeting industrial-grade thermal requirements. This range is validated across all electrical parameters including propagation delay, output drive, and input threshold stability, and applies specifically to the DGG (TSSOP-48) package variant as documented in TI's SCBS715E datasheet revision November 2006.

Does the SN74LVT16245BDGGR support true 5-V input tolerance?

Yes, the SN74LVT16245BDGGR supports input voltages up to 5.5 V regardless of V_CC level, as confirmed by the Absolute Maximum Ratings table (VI = –0.5 V to 7 V) and Recommended Operating Conditions (VI = 5.5 V). This allows direct connection to 5-V TTL outputs without external clamping or level-shifting circuitry.

Can the SN74LVT16245BDGGR be used in hot-swap applications?

Yes, the SN74LVT16245BDGGR includes both I_off and power-up 3-state circuitry explicitly designed for hot-insertion. When V_CC = 0, I_off limits current to ±100 µA, and the power-up 3-state ensures outputs remain high-impedance until V_CC stabilizes above 1.5 V - fully supporting live board replacement in modular systems.

What is the pin-compatible alternative to the SN74LVT16245BDGGR in the same TSSOP-48 package?

No pin-compatible drop-in replacement exists for the SN74LVT16245BDGGR with identical 5-V-tolerant I/O, 64 mA drive, and hot-swap features. While SN74LVTH16245ADGGR shares the DGG package and pinout, it lacks I_off, has reduced drive (±32 mA), and does not support 5-V inputs - requiring redesign of protection and timing margins.

How does the flow-through architecture of the SN74LVT16245BDGGR improve PCB layout?

The flow-through architecture aligns complementary A- and B-port pins (e.g., A1 adjacent to B1) on opposite sides of the TSSOP-48 body, enabling straight-layer routing without vias or layer jumps. This reduces trace length mismatch, minimizes skew across the 16-bit bus, and simplifies controlled-impedance layout - directly improving signal integrity in high-speed parallel interfaces.

SN74LVT16245BDGGR Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: 74LVT

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

SN74LVT16245BDGGR FAQ

1.How can I place an order for SN74LVT16245BDGGR through Aetrix?

Please submit a Request for Quotation (RFQ) for SN74LVT16245BDGGR 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 SN74LVT16245BDGGR reliable?

The price and inventory of SN74LVT16245BDGGR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVT16245BDGGR is usually 5 days.

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Once your SN74LVT16245BDGGR 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 SN74LVT16245BDGGR?

For technical support, including SN74LVT16245BDGGR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVT16245BDGGR requirements.

6.How does Aetrix verify that SN74LVT16245BDGGR is sourced from the original manufacturer or authorized distributors?

All SN74LVT16245BDGGR 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 SN74LVT16245BDGGR meets industry standards.

7.What is the process for return or replacement of SN74LVT16245BDGGR?

All SN74LVT16245BDGGR units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVT16245BDGGR, 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 SN74LVT16245BDGGR part is unused and in its original packaging.

Return procedure for SN74LVT16245BDGGR:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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