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

onsemi 74ALVC16245DTR

Name: 74ALVC16245DTR
Brand: onsemi
SKU: 74ALVC16245DTR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 74ALVC16245DTR

Manufacturer:: onsemi

Category:: Buffers, Drivers, Receivers, Transceivers

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

Datasheet:: 74ALVC16245DTR.pdf

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

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Product details

Overview

74ALVC16245DTR from onsemi is a low-voltage, non-inverting 16-bit transceiver with 3.6 V-tolerant I/O, designed for bidirectional data flow control in 1.65–3.3 V digital systems. It features dual byte-control (OE1/T/R1 and OE2/T/R2), 3-state outputs, and supports live insertion/withdrawal in hot-swap applications such as backplane interfaces and modular computing systems.

For engineers reviewing the 74ALVC16245DTR datasheet, pinout, applications, or equivalent options, key selection criteria include voltage range compatibility (1.65–3.3 V), 3.6 V I/O tolerance, propagation delay ≤3.0 ns at 3.0–3.6 V, static drive capability (24 mA at 3.0 V), and TSSOP-48 package footprint constraints.

Technical Context

The 74ALVC16245DTR implements two independent 8-bit transceiver sections (A0–A7/B0–B7 and A8–A15/B8–B15), each controlled by dedicated OE and T/R inputs. Direction control is active-HIGH for transmit (A→B) and active-LOW for receive (B→A), enabling flexible bus arbitration without external logic.

It incorporates IOFF circuitry ensuring high-impedance outputs when VCC = 0 V, and achieves near-zero quiescent supply current (40 µA) in all logic states. Input and output structures are rated for 3.6 V absolute maximum, allowing safe interfacing with mixed-voltage subsystems while operating from 1.65–3.3 V supplies.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage Range	1.65 V to 3.3 V - Enables operation across 1.8 V, 2.5 V, and 3.3 V logic domains without level shifters.
Input/Output Voltage Tolerance	Up to 3.6 V - Permits safe connection to higher-voltage buses or legacy 3.3 V peripherals without clamping diodes.
Propagation Delay (max)	3.0 ns at 3.0–3.6 V - Supports >300 MHz data rates in point-to-point or stub-bus configurations.
Output Drive Strength	24 mA sink/source at 3.0 V - Drives standard 50 Ω transmission lines or multiple CMOS loads with minimal signal degradation.
IOFF Leakage Current	10 µA at VCC = 0 V - Guarantees true high-Z isolation during power sequencing or hot-plug events.
Quiescent Supply Current	40 µA - Reduces standby power in battery-backed or always-on system management controllers.
ESD Rating (HBM)	2000 V - Meets industrial-grade robustness requirements for board-level handling and field deployment.

Pinout & Package

TSSOP-48 package (Case 1201), 7.95 mm × 6.1 mm body, 0.5 mm pitch, lead-free and RoHS-compliant.

Pin/Terminal	Circuit Role	Design Meaning
OE1, OE2	Output Enable Inputs	Active-HIGH enables corresponding 8-bit transceiver section; HIGH disables both A and B ports into 3-state.
T/R1, T/R2	Transmit/Receive Control	Active-HIGH routes A→B; active-LOW routes B→A - enables full-duplex or half-duplex bus control per byte group.
A0–A15	Side A I/O Terminals	Bidirectional ports: driven by B-side when T/R = LOW; drive B-side when T/R = HIGH; high-Z when OE = HIGH.
B0–B15	Side B I/O Terminals	Complementary bidirectional ports mirroring A-side behavior under same OE/T/R control logic.
VCC (Pins 41, 30, 18)	Power Supply	Three dedicated VCC pins reduce IR drop and improve noise immunity across wide 48-pin layout.
GND (Pins 45, 39, 34, 28, 21)	Ground Reference	Five GND pins provide low-inductance return paths, critical for maintaining signal integrity at sub-4 ns switching speeds.

Key Features

Feature	Design Value
Byte-Control Architecture	Independent OE/T/R control of two 8-bit sections allows partial bus gating - e.g., isolate memory vs. peripheral lanes without disabling entire 16-bit path.
3.6 V-Tolerant I/O	Eliminates need for external voltage translators when interfacing with 3.3 V FPGA I/O banks or microcontroller peripherals operating at higher VIO.
Live Insertion Support	IOFF and 3-state behavior ensure no bus contention or back-powering during hot-swap of daughterboards or mezzanine modules.
Low Dynamic Power	CPD = 20 pF enables <1 mW per bit at 10 MHz - suitable for portable instrumentation and low-power industrial gateways.
Latch-Up Immunity	Exceeds 250 mA @ 125°C - meets stringent reliability requirements for automotive under-hood and industrial motor control environments.

Applications

Backplane Data Routing	Modular PLC I/O Expansion
Use Scenario: Bidirectional data transfer between CPU module and field I/O carrier over parallel bus with hot-swap capability. IC Role / Device Role / Timing Role: Level-translating transceiver managing direction and enable timing for 16-bit parallel data path between isolated voltage domains. Use Value: 3.6 V I/O tolerance prevents damage during module insertion; 3.0 ns propagation delay maintains timing margin for 100+ MHz synchronous bus protocols.	Use Scenario: Extending programmable logic controller rack with additional analog/digital I/O cards via parallel backplane. IC Role / Device Role / Timing Role: Bus isolator and direction controller enabling master-slave communication between PLC CPU and expansion modules. Use Value: Dual-byte control allows independent enable/disable of analog vs. digital I/O groups; IOFF protects powered-backplane during card replacement.
FPGA-to-Microcontroller Interface	Industrial Memory Subsystem Buffer
Use Scenario: Interfacing Xilinx Artix-7 FPGA (3.3 V I/O) with ARM Cortex-M7 MCU (1.8 V core, 3.3 V I/O) using shared SRAM or register-mapped peripherals. IC Role / Device Role / Timing Role: Voltage-compatible bidirectional data bridge synchronizing read/write handshaking between heterogeneous logic families. Use Value: 1.65–3.3 V supply range matches both devices' VCCIO; 24 mA drive ensures clean edges driving FPGA input capacitance (≤10 pF).	Use Scenario: Buffering address/data bus between industrial-grade microcontroller and external parallel NOR flash or SRAM. IC Role / Device Role / Timing Role: High-speed bus repeater isolating MCU core from memory access noise and load variations. Use Value: 3.0 ns max tPLH/tPHL preserves setup/hold margins for 100 MHz memory access; 5-GND-pin layout minimizes ground bounce during burst reads.

Backplane Data Routing

Modular PLC I/O Expansion

Use Scenario: Bidirectional data transfer between CPU module and field I/O carrier over parallel bus with hot-swap capability.

IC Role / Device Role / Timing Role: Level-translating transceiver managing direction and enable timing for 16-bit parallel data path between isolated voltage domains.

Use Value: 3.6 V I/O tolerance prevents damage during module insertion; 3.0 ns propagation delay maintains timing margin for 100+ MHz synchronous bus protocols.

Use Scenario: Extending programmable logic controller rack with additional analog/digital I/O cards via parallel backplane.

IC Role / Device Role / Timing Role: Bus isolator and direction controller enabling master-slave communication between PLC CPU and expansion modules.

Use Value: Dual-byte control allows independent enable/disable of analog vs. digital I/O groups; IOFF protects powered-backplane during card replacement.

FPGA-to-Microcontroller Interface

Industrial Memory Subsystem Buffer

Use Scenario: Interfacing Xilinx Artix-7 FPGA (3.3 V I/O) with ARM Cortex-M7 MCU (1.8 V core, 3.3 V I/O) using shared SRAM or register-mapped peripherals.

IC Role / Device Role / Timing Role: Voltage-compatible bidirectional data bridge synchronizing read/write handshaking between heterogeneous logic families.

Use Value: 1.65–3.3 V supply range matches both devices' VCCIO; 24 mA drive ensures clean edges driving FPGA input capacitance (≤10 pF).

Use Scenario: Buffering address/data bus between industrial-grade microcontroller and external parallel NOR flash or SRAM.

IC Role / Device Role / Timing Role: High-speed bus repeater isolating MCU core from memory access noise and load variations.

Use Value: 3.0 ns max tPLH/tPHL preserves setup/hold margins for 100 MHz memory access; 5-GND-pin layout minimizes ground bounce during burst reads.

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit transceiver applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74ALVC16245DGGR	TSSOP-48, identical electrical specs; TI part uses different marking format and moisture sensitivity level (MSL 3 vs. onsemi MSL 1).	No functional difference in bus buffering; requires requalification if MSL-1 compliance is mandatory for long-term storage or high-reliability assembly.	Select SN74ALVC16245DGGR only if TI sourcing is preferred and MSL-3 handling procedures are in place.
74LVC16245ADGG	Same pinout, but LVC family: lower drive (24 mA @ 3.3 V only), no 1.65 V min support, and no IOFF guarantee at VCC = 0 V.	Suitable for fixed 3.3 V systems only; not recommended for multi-voltage or hot-swap designs requiring true power-off isolation.	Choose 74LVC16245ADGG only for cost-sensitive 3.3 V-only applications where IOFF and 1.65 V operation are unnecessary.

Compared with SN74ALVC16245DGGR and 74LVC16245ADGG, the 74ALVC16245DTR uniquely combines 1.65 V minimum operation, guaranteed IOFF at VCC = 0 V, and MSL-1 packaging - making it the only option qualified for industrial hot-swap and ultra-low-voltage embedded systems.

Availability

74ALVC16245DTR is available at Aetrix Electronics and suitable for industrial automation, programmable logic controller (PLC) expansion, and FPGA interface design requiring stable component supply, long-lifecycle support, and RoHS-compliant TSSOP packaging.

Supply support for 74ALVC16245DTR 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

onsemi (formerly ON Semiconductor) is a global semiconductor supplier specializing in energy-efficient power management, analog, logic, and sensor solutions for automotive, industrial, and cloud infrastructure markets.

The ALVC logic family, including the 74ALVC16245DTR, was engineered for high-speed, low-voltage bidirectional bus interfacing in mixed-supply systems - targeting applications demanding 3.6 V I/O tolerance, sub-4 ns timing, and robust hot-swap operation.

FAQ

What is the minimum supply voltage required for reliable operation of the 74ALVC16245DTR?

The 74ALVC16245DTR operates reliably down to 1.65 V, as specified in its Recommended Operating Conditions. At this voltage, propagation delay increases to 6.0 ns max and output drive reduces to 4 mA, but all logic functions remain fully compliant. This makes the 74ALVC16245DTR suitable for battery-powered or ultra-low-power industrial sensors where core voltage scaling is essential.

Does the 74ALVC16245DTR support hot-plug insertion while system power is active?

Yes, the 74ALVC16245DTR supports live insertion and withdrawal due to its IOFF specification, which guarantees high-impedance outputs when VCC = 0 V, and its 3.6 V-tolerant I/O structure. During hot-plug, unpowered 74ALVC16245DTR pins will not back-drive or latch up connected circuitry - a critical feature verified per JESD78 latch-up testing at 250 mA.

Can the 74ALVC16245DTR be used to interface a 1.8 V microcontroller with a 3.3 V FPGA?

Yes, the 74ALVC16245DTR is explicitly designed for this use case: its 1.65–3.3 V supply range aligns with 1.8 V logic levels, and its 3.6 V-tolerant inputs/outputs safely accept 3.3 V signals from the FPGA without clamping or damage. The 74ALVC16245DTR eliminates external level shifters while maintaining timing integrity via 3.0 ns max propagation delay at 3.0–3.6 V.

How many ground connections does the 74ALVC16245DTR have, and why is this important?

The 74ALVC16245DTR has five dedicated GND pins (pins 45, 39, 34, 28, and 21) distributed across the TSSOP-48 package. This multi-ground configuration minimizes ground loop inductance and suppresses simultaneous switching noise - essential for preserving signal integrity at sub-4 ns edge rates and preventing timing violations in high-speed parallel bus applications using the 74ALVC16245DTR.

Is the 74ALVC16245DTR pin-compatible with standard 74-series transceivers like the 74LS245?

No, the 74ALVC16245DTR is not pin-compatible with bipolar 74LS245 or older CMOS 74HC245 devices. It uses a 48-pin TSSOP footprint with dual OE/T/R controls and split VCC/GND distribution, whereas 74LS245 uses 20-pin DIP/SOIC with single-direction control. Migration requires PCB redesign, but the 74ALVC16245DTR offers superior speed, voltage flexibility, and I/O tolerance over legacy parts.

74ALVC16245DTR Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: 74ALVC

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

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:: 24mA, 24mA

Voltage - Supply:: 1.65V ~ 3.6V

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 48-TSSOP

74ALVC16245DTR FAQ

1.How can I place an order for 74ALVC16245DTR through Aetrix?

Please submit a Request for Quotation (RFQ) for 74ALVC16245DTR 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 74ALVC16245DTR reliable?

The price and inventory of 74ALVC16245DTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74ALVC16245DTR is usually 5 days.

3.What payment methods are accepted for 74ALVC16245DTR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74ALVC16245DTR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 74ALVC16245DTR?

74ALVC16245DTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 74ALVC16245DTR 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 74ALVC16245DTR?

For technical support, including 74ALVC16245DTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74ALVC16245DTR requirements.

6.How does Aetrix verify that 74ALVC16245DTR is sourced from the original manufacturer or authorized distributors?

All 74ALVC16245DTR 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 74ALVC16245DTR meets industry standards.

7.What is the process for return or replacement of 74ALVC16245DTR?

All 74ALVC16245DTR units undergo pre-shipment inspection (PSI). If there is an issue with 74ALVC16245DTR, 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 74ALVC16245DTR part is unused and in its original packaging.

Return procedure for 74ALVC16245DTR:

1.Submit a request within 90 days.

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

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