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

onsemi 74LVT16245MTDX

Name: 74LVT16245MTDX
Brand: onsemi
SKU: 74LVT16245MTDX
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 74LVT16245MTDX

Manufacturer:: onsemi

Category:: Buffers, Drivers, Receivers, Transceivers

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

Datasheet:: 74LVT16245MTDX.pdf

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

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Product details

Overview

74LVT16245MTDX from Fairchild Semiconductor is a low-voltage 16-bit non-inverting bidirectional transceiver with 3-STATE outputs, designed for bus-oriented applications operating at 3.3 V V_CC. It features byte-level control (two independent 8-bit sections), TTL-compatible 5 V input/output interface capability, and supports bidirectional data flow via T/R inputs. Its OE inputs disable both A and B ports into high-impedance state, enabling clean bus sharing in embedded and industrial backplane systems.

For engineers reviewing the 74LVT16245MTDX datasheet, pinout, applications, or equivalent options, key selection considerations include its 3.3 V supply operation with 5 V tolerant I/O, 32 mA/64 mA output drive strength, byte-selectable direction control, and compatibility with legacy 74-series 16245 logic families in mixed-voltage system interconnects.

Technical Context

The 74LVT16245MTDX implements two independent 8-bit bidirectional buffer sections, each controlled by dedicated T/R and OE pins-enabling selective 8-bit or full 16-bit operation. Its BiCMOS fabrication delivers ABT-class speed (t_PLH/t_PHL ≤ 3.9 ns @ 3.3 V) while maintaining low static current (I_CCZ = 0.19 mA in 3-STATE).

It operates within 2.7–3.6 V V_CC, supports –40°C to +85°C ambient temperature, and provides 5 V-tolerant inputs (VI up to 5.5 V) and outputs capable of driving 32 mA high / 64 mA low-critical for interfacing between 3.3 V logic and legacy 5 V buses without level shifters.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CC Range	2.7 V to 3.6 V - Ensures stable operation across industrial-grade 3.3 V supply tolerances.
I/O Voltage Tolerance	Up to 5.5 V - Allows direct connection to 5 V buses without external level translation.
Output Drive	32 mA HIGH / 64 mA LOW - Sufficient to drive multiple TTL loads or stubbed backplane traces.
Propagation Delay	≤ 3.9 ns (max, @ 3.3 V, CL = 50 pF) - Enables reliable timing in high-speed 32–66 MHz parallel bus designs.
3-STATE Enable/Disable Time	t_PZH/t_PHZ ≤ 5.3 ns / 6.1 ns - Minimizes bus contention during direction switching in multiplexed data paths.
Input/Output Capacitance	C_I/O = 8 pF - Low capacitive loading preserves signal integrity on shared bus lines.
Operating Temperature	–40°C to +85°C - Qualified for industrial and extended-temperature embedded control environments.

Pinout & Package

74LVT16245MTDX is packaged in a 48-lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 6.1 mm wide, with 0.5 mm lead pitch. Pin assignments are identical to the SSOP variant (MS48A) per Fairchild DS500152.

Pin/Terminal	Circuit Role	Design Meaning
A0–A15	Side A bidirectional I/O	Connects to local bus or microcontroller data port; direction controlled by T/R1/T/R2.
B0–B15	Side B bidirectional I/O	Connects to peripheral or memory bus; electrically isolated from Side A when OE active.
OE1, OE2	Active-low output enable (per byte)	Disables A/B ports independently; enables byte-granular bus arbitration.
T/R1, T/R2	Transmit/Receive direction control (per byte)	L = B→A data flow; H = A→B data flow; allows simultaneous dual-direction operation.
V_CC	Power supply	3.3 V nominal; decoupling required at each V_CC pin per layout guidelines.
GND	Ground reference	Multiple GND pins reduce ground bounce; must be connected to low-impedance plane.

Key Features

Feature	Design Value
5 V-tolerant I/O	Supports direct interfacing with 5 V peripherals or legacy controllers without level-shifting circuitry.
Byte-selectable control	Independent OE/T/R per 8-bit section enables flexible partitioning of 16-bit data paths (e.g., address vs. data).
Glitch-free power-up/down	Outputs remain in high-impedance during V_CC ramp-up/down, preventing bus contention at power cycle.
High drive strength	64 mA sink capability ensures robust low-state signaling across noisy industrial bus environments.
Low static power	0.19 mA supply current in 3-STATE mode reduces standby power in always-on subsystems.

Applications

Industrial Backplane Interconnect	Embedded Microcontroller Bus Expansion
Use Scenario: Connecting a 3.3 V ARM-based controller to legacy 5 V ISA-style peripheral cards in programmable logic controllers. IC Role / Device Role / Timing Role: Bidirectional voltage-tolerant transceiver managing data flow between mismatched voltage domains on a shared 16-bit data bus. Use Value: Eliminates need for discrete level shifters while maintaining <3.9 ns propagation delay for real-time I/O response.	Use Scenario: Expanding GPIO bandwidth between an FPGA and external SRAM or flash memory in a test equipment front-end. IC Role / Device Role / Timing Role: 16-bit bidirectional buffer providing controlled direction switching and bus isolation during memory read/write cycles. Use Value: Byte-selectable OE enables concurrent access to separate memory banks without bus contention.
Automotive Diagnostic Interface	Communications Protocol Bridge
Use Scenario: Isolating diagnostic ECU's 3.3 V CAN controller from 5 V J1939 physical layer transceivers in heavy-duty vehicle networks. IC Role / Device Role / Timing Role: Voltage-translating transceiver handling command/response data packets between protocol layers. Use Value: 5 V-tolerant inputs withstand load-dump transients; 64 mA drive sustains signal integrity over long harness runs.	Use Scenario: Bridging a 3.3 V UART-to-parallel converter IC with a 5 V legacy printer controller in point-of-sale terminals. IC Role / Device Role / Timing Role: Direction-controlled data shuttle synchronizing asynchronous host commands with parallel printer handshaking. Use Value: Independent T/R control per byte allows interleaved status polling and data transfer without full bus reconfiguration.

Industrial Backplane Interconnect

Embedded Microcontroller Bus Expansion

Use Scenario: Connecting a 3.3 V ARM-based controller to legacy 5 V ISA-style peripheral cards in programmable logic controllers.

IC Role / Device Role / Timing Role: Bidirectional voltage-tolerant transceiver managing data flow between mismatched voltage domains on a shared 16-bit data bus.

Use Value: Eliminates need for discrete level shifters while maintaining <3.9 ns propagation delay for real-time I/O response.

Use Scenario: Expanding GPIO bandwidth between an FPGA and external SRAM or flash memory in a test equipment front-end.

IC Role / Device Role / Timing Role: 16-bit bidirectional buffer providing controlled direction switching and bus isolation during memory read/write cycles.

Use Value: Byte-selectable OE enables concurrent access to separate memory banks without bus contention.

Automotive Diagnostic Interface

Communications Protocol Bridge

Use Scenario: Isolating diagnostic ECU's 3.3 V CAN controller from 5 V J1939 physical layer transceivers in heavy-duty vehicle networks.

IC Role / Device Role / Timing Role: Voltage-translating transceiver handling command/response data packets between protocol layers.

Use Value: 5 V-tolerant inputs withstand load-dump transients; 64 mA drive sustains signal integrity over long harness runs.

Use Scenario: Bridging a 3.3 V UART-to-parallel converter IC with a 5 V legacy printer controller in point-of-sale terminals.

IC Role / Device Role / Timing Role: Direction-controlled data shuttle synchronizing asynchronous host commands with parallel printer handshaking.

Use Value: Independent T/R control per byte allows interleaved status polling and data transfer without full bus reconfiguration.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74LVC16245ADGGR	Lower drive (24 mA/24 mA), 1.65–3.6 V V_CC, no 5 V tolerance - requires external clamping for 5 V I/O.	Suitable only in pure 3.3 V systems; not drop-in for mixed-voltage buses.	Select when cost and ultra-low power outweigh 5 V interface needs.
74ALVCH16245PAG	Higher speed (t_PD ≤ 2.8 ns), 1.65–3.6 V, 5 V tolerant, but lacks byte-level OE/T/R separation.	Full 16-bit control only; less granular bus arbitration than 74LVT16245MTDX.	Prefer when maximum throughput matters more than per-byte bus partitioning.

Compared with SN74LVC16245ADGGR and 74ALVCH16245PAG, the 74LVT16245MTDX uniquely balances 5 V I/O tolerance, byte-selectable control, and ABT-class speed-making it optimal for industrial backplanes where voltage domain bridging and flexible bus segmentation are mandatory.

Availability

74LVT16245MTDX is available at Aetrix Electronics and suitable for industrial backplane interconnect, embedded microcontroller bus expansion, and automotive diagnostic interface applications requiring stable component supply and long-term lifecycle support.

Supply support for 74LVT16245MTDX 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

Fairchild Semiconductor was a leading designer of high-performance analog and mixed-signal ICs, acquired by ON Semiconductor in 2016; its legacy logic portfolio remains widely deployed in industrial and automotive systems.

The 74LVT16245MTDX belongs to Fairchild's LVT (Low-Voltage TTL) logic family, engineered specifically for 3.3 V systems requiring backward compatibility with 5 V TTL signaling and robust bus-driving capability.

FAQ

What voltage levels does the 74LVT16245MTDX support on its I/O pins?

The 74LVT16245MTDX accepts input voltages up to 5.5 V and drives outputs compatible with both 3.3 V and 5 V logic thresholds. Its V_CC supply must be 2.7–3.6 V, but I/O pins tolerate 5 V signals without damage or level-shifting components-enabling seamless integration between 3.3 V controllers and legacy 5 V peripherals in the 74LVT16245MTDX design.

Does the 74LVT16245MTDX have built-in bushold functionality?

No, the 74LVT16245MTDX does not include bushold inputs; that feature is exclusive to the LVTH variant (e.g., 74LVTH16245MTD). The 74LVT16245MTDX requires external pull-up or pull-down resistors on unused inputs to prevent floating states, unlike its bushold-equipped sibling.

Can the 74LVT16245MTDX be used for hot-plug or live-insertion applications?

Yes, the 74LVT16245MTDX supports live insertion/extraction per its datasheet. Its power-up/down high-impedance behavior ensures outputs remain in 3-STATE during supply ramping, eliminating bus glitches-a critical requirement for field-replaceable modules using the 74LVT16245MTDX in telecom or industrial rack systems.

What is the maximum data rate supported by the 74LVT16245MTDX?

The 74LVT16245MTDX does not specify a maximum data rate directly, but its AC characteristics-including t_PLH/t_PHL ≤ 3.9 ns and t_OSHL/t_OSLH ≤ 1.0 ns skew-support reliable operation in 32 MHz parallel bus systems (e.g., ISA-like interfaces). System-level timing margins must account for trace length and loading when deploying the 74LVT16245MTDX.

Is the 74LVT16245MTDX pin-compatible with standard 74-series 16245 devices?

The 74LVT16245MTDX is functionally compatible with the 74 series 16245 but not pin-compatible due to differing voltage requirements and I/O architecture. While logic function and pin numbering align, the 74LVT16245MTDX uses 3.3 V V_CC and 5 V-tolerant I/O, whereas classic 74AC/74ALS16245 require 5 V supply-requiring board redesign if replacing legacy parts with the 74LVT16245MTDX.

74LVT16245MTDX Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: 74LVT

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

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Logic Type:: Buffer, 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

74LVT16245MTDX FAQ

1.How can I place an order for 74LVT16245MTDX through Aetrix?

Please submit a Request for Quotation (RFQ) for 74LVT16245MTDX 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 74LVT16245MTDX reliable?

The price and inventory of 74LVT16245MTDX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVT16245MTDX is usually 5 days.

3.What payment methods are accepted for 74LVT16245MTDX?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVT16245MTDX transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 74LVT16245MTDX?

74LVT16245MTDX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 74LVT16245MTDX 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 74LVT16245MTDX?

For technical support, including 74LVT16245MTDX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVT16245MTDX requirements.

6.How does Aetrix verify that 74LVT16245MTDX is sourced from the original manufacturer or authorized distributors?

All 74LVT16245MTDX 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 74LVT16245MTDX meets industry standards.

7.What is the process for return or replacement of 74LVT16245MTDX?

All 74LVT16245MTDX units undergo pre-shipment inspection (PSI). If there is an issue with 74LVT16245MTDX, 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 74LVT16245MTDX part is unused and in its original packaging.

Return procedure for 74LVT16245MTDX:

1.Submit a request within 90 days.

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

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