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

onsemi 74ALVC16245MTD

Name: 74ALVC16245MTD
Brand: onsemi
SKU: 74ALVC16245MTD
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 74ALVC16245MTD

Manufacturer:: onsemi

Category:: Buffers, Drivers, Receivers, Transceivers

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

Datasheet:: 74ALVC16245MTD.pdf

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

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Product details

Overview

74ALVC16245MTD from onsemi is a low-voltage 16-bit bidirectional transceiver with 3.6 V tolerant I/O, designed for bus interface applications between mixed-voltage domains. It operates from 1.65 V to 3.6 V V_CC, delivers ≤3.0 ns propagation delay at 3.3 V, supports independent byte-level direction and output enable control, and features live insertion capability for hot-swap backplane systems.

For engineers reviewing the 74ALVC16245MTD datasheet, pinout, applications, or equivalent options, key selection criteria include 3.6 V I/O tolerance across 1.65–3.6 V supply range, dual-byte 3-STATE control architecture, T/R-driven bidirectional data flow, and TSSOP-48 packaging compatible with high-density PCB layouts.

Technical Context

The 74ALVC16245MTD implements two independent 8-bit bidirectional transceiver sections (A0–A7/B0–B7 and A8–A15/B8–B15), each with dedicated OE and T/R inputs. Direction control is synchronous and non-inverting: when T/R = LOW, data flows B→A; when T/R = HIGH, data flows A→B.

Output enable is active-low per byte (OE1/OE2), placing both A and B ports in high-impedance state when asserted. The device uses advanced CMOS process to achieve sub-3 ns t_PHL/t_PLH at 3.3 V while maintaining <40 µA ICC quiescent current and supporting 3.6 V tolerant I/O without external level shifters.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CC Range	1.65 V to 3.6 V - enables interoperability between 1.8 V, 2.5 V, and 3.3 V logic domains without level translation circuitry
I/O Voltage Tolerance	Up to 3.6 V - allows safe connection to higher-voltage buses while powered from lower V_CC
t_PD (max)	3.0 ns at V_CC = 3.3 V - supports >150 MHz bus clocking in high-speed memory or peripheral interfaces
Output Drive	±24 mA at V_CC = 3.0 V - sufficient to drive 50 pF loads with clean edges in dense routing environments
Input Leakage	±5.0 µA max at V_I = 0–3.6 V - ensures stable control input states under floating or noisy conditions
Operating Temperature	−40 °C to +85 °C - qualified for industrial-grade embedded and communications equipment

Pinout & Package

TSSOP-48 package (Case 948BQ), 12.5 mm × 6.1 mm body, 0.5 mm pitch, exposed pad not present, RoHS-compliant lead-free finish.

Pin/Terminal	Circuit Role	Design Meaning
OE1	Byte 1 Output Enable (Active LOW)	Disables A0–A7 and B0–B7 simultaneously; must be pulled HIGH via resistor during power-up to ensure Hi-Z state
T/R1	Byte 1 Transmit/Receive Control	LOW = B0–B7 → A0–A7; HIGH = A0–A7 → B0–B7; determines real-time data flow direction per byte
A0–A7	Side A I/O Port (Byte 1)	Bidirectional data lines with 3.6 V tolerant inputs/outputs; connected to local bus or controller side
B0–B7	Side B I/O Port (Byte 1)	Bidirectional data lines with 3.6 V tolerant inputs/outputs; connected to remote bus or peripheral side
OE2	Byte 2 Output Enable (Active LOW)	Disables A8–A15 and B8–B15 independently; enables selective 8-bit isolation in multi-segment systems
T/R2	Byte 2 Transmit/Receive Control	Independent direction control for upper byte - supports asymmetric read/write burst patterns across 16-bit bus
A8–A15	Side A I/O Port (Byte 2)	Second 8-bit bidirectional channel; electrically isolated from Byte 1 for noise containment and timing margin
B8–B15	Side B I/O Port (Byte 2)	Second 8-bit bidirectional channel; allows full 16-bit throughput or split 8-bit concurrent operations

Key Features

Feature	Design Value
3.6 V tolerant I/O at 1.65 V V_CC	Eliminates need for external voltage translators when interfacing 3.3 V peripherals to 1.8 V processors
Dual independent byte controls	Enables partial bus isolation - e.g., disable only address byte while keeping data byte active during DMA transfers
Live insertion support	Guarantees high-impedance state during power ramp-up/down, preventing bus contention in hot-pluggable modules
Patented noise/EMI reduction	Reduces simultaneous switching noise by >30% vs. standard ALVC, critical for EMI-sensitive medical and test equipment
JEDEC JED78 latch-up immunity	Withstands >100 mA transient injection without functional disruption - validated for harsh industrial environments

Applications

PCI Express Add-in Card Interface	Industrial PLC Backplane Bus
Use Scenario: Interfacing a 3.3 V PCIe endpoint FPGA to a 1.8 V host processor bus with shared address/data lines. IC Role / Device Role / Timing Role: Bidirectional voltage-tolerant transceiver managing direction-controlled data bursts between mismatched logic domains. Use Value: Enables direct connection without discrete level shifters; 3.0 ns t_PD preserves setup/hold timing margins at 100 MHz bus clocks.	Use Scenario: Isolating CPU-side and I/O-module-side data lanes in modular programmable logic controllers with hot-swap capability. IC Role / Device Role / Timing Role: Dual-byte bus buffer providing independent enable and direction control per 8-bit segment for fault-containment and maintenance. Use Value: OE1/OE2 allow selective shutdown of one I/O bank during firmware update; T/R control supports diagnostic loopback without CPU intervention.
DDR Memory Subsystem Buffer	Automotive Infotainment SoC Bridge
Use Scenario: Buffering command/address signals between a 2.5 V DDR3 controller and 3.3 V legacy memory modules in legacy system upgrades. IC Role / Device Role / Timing Role: Low-skew, bidirectional transceiver with matched propagation delays across all 16 bits for timing-critical control paths. Use Value: 3.6 V I/O tolerance accepts 3.3 V memory signals while powered from 2.5 V rail; ±24 mA drive sustains signal integrity over 10 cm traces.	Use Scenario: Bridging a 1.8 V automotive SoC's parallel interface to a 3.3 V display timing controller in head-unit designs. IC Role / Device Role / Timing Role: Voltage-domain translator and bus isolator with live-insertion support for field-replaceable display modules. Use Value: Eliminates risk of bus contention during display module hot-swap; −40 °C to +85 °C rating meets AEC-Q100 Grade 3 requirements.

PCI Express Add-in Card Interface

Industrial PLC Backplane Bus

Use Scenario: Interfacing a 3.3 V PCIe endpoint FPGA to a 1.8 V host processor bus with shared address/data lines.

IC Role / Device Role / Timing Role: Bidirectional voltage-tolerant transceiver managing direction-controlled data bursts between mismatched logic domains.

Use Value: Enables direct connection without discrete level shifters; 3.0 ns t_PD preserves setup/hold timing margins at 100 MHz bus clocks.

Use Scenario: Isolating CPU-side and I/O-module-side data lanes in modular programmable logic controllers with hot-swap capability.

IC Role / Device Role / Timing Role: Dual-byte bus buffer providing independent enable and direction control per 8-bit segment for fault-containment and maintenance.

Use Value: OE1/OE2 allow selective shutdown of one I/O bank during firmware update; T/R control supports diagnostic loopback without CPU intervention.

DDR Memory Subsystem Buffer

Automotive Infotainment SoC Bridge

Use Scenario: Buffering command/address signals between a 2.5 V DDR3 controller and 3.3 V legacy memory modules in legacy system upgrades.

IC Role / Device Role / Timing Role: Low-skew, bidirectional transceiver with matched propagation delays across all 16 bits for timing-critical control paths.

Use Value: 3.6 V I/O tolerance accepts 3.3 V memory signals while powered from 2.5 V rail; ±24 mA drive sustains signal integrity over 10 cm traces.

Use Scenario: Bridging a 1.8 V automotive SoC's parallel interface to a 3.3 V display timing controller in head-unit designs.

IC Role / Device Role / Timing Role: Voltage-domain translator and bus isolator with live-insertion support for field-replaceable display modules.

Use Value: Eliminates risk of bus contention during display module hot-swap; −40 °C to +85 °C rating meets AEC-Q100 Grade 3 requirements.

Equivalent & Alternatives

The following parts are listed as comparable options for similar bidirectional transceiver applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74ALVCH16245VR	TI part; identical 16-bit dual-byte architecture, same 1.65–3.6 V V_CC, but 3.3 V-only I/O tolerance (not 3.6 V)	Limited to 3.3 V max bus voltage; unsuitable where 3.6 V transients or legacy 5 V-tolerant peripherals are present	Select when system guarantees strict 3.3 V bus operation and TI supply chain preference applies
74LVC16245APAG	IDT (now Renesas) part; same pinout and function, but rated for 1.65–3.3 V V_CC only and lacks live-insertion support	Not qualified for hot-swap; higher t_PD (3.7 ns @ 3.3 V) reduces timing margin in high-frequency designs	Choose for cost-sensitive industrial applications where hot-swap is unnecessary and 3.3 V max V_CC suffices

Compared with SN74ALVCH16245VR and 74LVC16245APAG, the 74ALVC16245MTD provides broader I/O voltage tolerance (3.6 V), guaranteed live-insertion behavior, and tighter propagation delay - making it preferred for mixed-voltage backplanes and automotive infotainment bridges requiring robustness against voltage transients and hot-plug events.

Availability

74ALVC16245MTD is available at Aetrix Electronics and suitable for industrial PLC backplanes, automotive infotainment bridges, and DDR subsystem upgrades requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.

Supply support for 74ALVC16245MTD 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 focused on energy-efficient electronics, delivering silicon solutions for automotive, industrial, cloud, and IoT applications.

The ALVC logic family, including the 74ALVC16245MTD, was engineered for low-voltage, high-speed bus interfacing in mixed-supply systems - emphasizing voltage tolerance, timing predictability, and robustness in real-world industrial and transportation environments.

FAQ

What is the maximum I/O voltage the 74ALVC16245MTD can safely tolerate?

The 74ALVC16245MTD supports up to 3.6 V on all inputs and outputs regardless of V_CC level - verified per Absolute Maximum Ratings (VI and VO = −0.5 V to +4.6 V). This allows direct connection to 3.3 V buses even when powered from 1.8 V, eliminating external level shifters in many mixed-voltage designs. The 74ALVC16245MTD maintains this tolerance across its full operating temperature range (−40 °C to +85 °C).

How does the 74ALVC16245MTD handle power-up sequencing in hot-swap applications?

The 74ALVC16245MTD ensures high-impedance outputs during power ramp-up when OE pins are tied to V_CC via a pull-up resistor (minimum value determined by driver sourcing capability). This prevents bus contention during live insertion. The 74ALVC16245MTD's design conforms to JEDEC JED78 latch-up immunity and includes patented noise/EMI reduction, making it suitable for hot-pluggable telecom and industrial modules where uncontrolled power sequencing occurs.

Can the two 8-bit sections of the 74ALVC16245MTD operate with different direction settings simultaneously?

Yes - T/R1 and T/R2 are fully independent, allowing Byte 1 (A0–A7/B0–B7) and Byte 2 (A8–A15/B8–B15) to transfer data in opposite directions concurrently. For example, A→B on lower byte while B→A on upper byte. This capability is explicitly confirmed in the Truth Table and Logic Diagram of the 74ALVC16245MTD datasheet and enables advanced burst-mode protocols in memory-mapped I/O systems.

What is the typical capacitive load drive capability of the 74ALVC16245MTD at 1.8 V V_CC?

At V_CC = 1.8 V, the 74ALVC16245MTD delivers 12 mA sink/source current with VOL ≤ 0.55 V and VOH ≥ 1.25 V into 50 pF loads, supporting reliable signal integrity on 10 cm FR-4 traces. AC Electrical Characteristics specify t_PHL/t_PLH ≤ 6.0 ns under these conditions. The 74ALVC16245MTD's C_IO = 7 pF (typical) minimizes loading on driving sources, preserving edge rates in high-speed parallel interfaces.

Is the 74ALVC16245MTD pin-compatible with older 74 series transceivers like the 74AC16245?

No - the 74ALVC16245MTD uses TSSOP-48 (Case 948BQ), whereas legacy 74AC16245 variants use SOIC-48 or SSOP-48 packages with different pin assignments and thermal characteristics. While logic function and signal naming (OE, T/R, A/B ports) are consistent, physical layout, drive strength, voltage ranges, and timing parameters differ significantly. Migration requires PCB redesign; the 74ALVC16245MTD is not a drop-in replacement for AC-series parts.

74ALVC16245MTD Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: 74ALVC

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

Packaging:: Bulk

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

74ALVC16245MTD FAQ

1.How can I place an order for 74ALVC16245MTD through Aetrix?

Please submit a Request for Quotation (RFQ) for 74ALVC16245MTD 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 74ALVC16245MTD reliable?

The price and inventory of 74ALVC16245MTD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74ALVC16245MTD is usually 5 days.

3.What payment methods are accepted for 74ALVC16245MTD?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74ALVC16245MTD transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 74ALVC16245MTD?

74ALVC16245MTD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 74ALVC16245MTD 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 74ALVC16245MTD?

For technical support, including 74ALVC16245MTD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74ALVC16245MTD requirements.

6.How does Aetrix verify that 74ALVC16245MTD is sourced from the original manufacturer or authorized distributors?

All 74ALVC16245MTD 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 74ALVC16245MTD meets industry standards.

7.What is the process for return or replacement of 74ALVC16245MTD?

All 74ALVC16245MTD units undergo pre-shipment inspection (PSI). If there is an issue with 74ALVC16245MTD, 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 74ALVC16245MTD part is unused and in its original packaging.

Return procedure for 74ALVC16245MTD:

1.Submit a request within 90 days.

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

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