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

onsemi 74LVT16240MTDX

Name: 74LVT16240MTDX
Brand: onsemi
SKU: 74LVT16240MTDX
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 74LVT16240MTDX

Manufacturer:: onsemi

Category:: Buffers, Drivers, Receivers, Transceivers

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

Datasheet:: 74LVT16240MTDX.pdf

Description:: IC BUFFER INVERT 3.6V 48TSSOP

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Product details

Overview

74LVT16240MTDX from Fairchild Semiconductor is a low-voltage 16-bit inverting buffer/line driver with 3-STATE outputs, designed for memory and address bus driving, clock distribution, and bidirectional bus interfacing in 3.3V systems with 5V-tolerant I/O. It features nibble-level (4-bit) output enable control, ±32 mA/±64 mA drive capability, and operates across –40°C to +85°C.

For engineers reviewing the 74LVT16240MTDX datasheet, pinout, applications, or equivalent options, key selection criteria include 3.3V supply compatibility, 5V-tolerant inputs, 3-STATE output timing (tPZH ≤ 4.9 ns), bushold-free operation, and TSSOP-48 package suitability for high-density PCB layouts.

Technical Context

The 74LVT16240MTDX implements sixteen independent inverting buffers grouped into four 4-bit nibbles, each controlled by a dedicated active-low Output Enable (OEn) input. Its BiCMOS process enables TTL-compatible speed at 3.3V while maintaining low power dissipation - typical ICCZ is 0.19 mA with all outputs disabled.

All inputs tolerate up to 5.5V regardless of VCC, enabling safe interfacing with legacy 5V logic. Outputs drive ±32 mA (HIGH) and ±64 mA (LOW) into loads, supporting robust signal integrity on terminated or unterminated buses without external termination.

Key Specifications

Parameter	Value and Actual Design Meaning
VCC Supply Range	2.7 V to 3.6 V - ensures stable operation in standard 3.3V ±10% rail environments
Input Voltage Range	0 V to 5.5 V - allows direct connection to 5V logic without level shifters
IOH / IOL Drive	–32 mA / +64 mA - supports driving multiple TTL loads or unterminated transmission lines
tPZH / tPLZ Max	4.9 ns / 4.4 ns - enables sub-5 ns enable/disable transitions for high-speed bus arbitration
Propagation Delay	1.0–4.2 ns - guarantees deterministic timing for synchronous address/data strobing
Operating Temperature	–40°C to +85°C - qualified for industrial-grade embedded and communications equipment
Input Capacitance	4 pF - minimizes capacitive loading on upstream drivers and reduces switching noise

Pinout & Package

74LVT16240MTDX is housed in a 48-pin Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153 compliant, 6.1 mm wide, with 0.5 mm lead pitch and exposed thermal pad (non-electrical). Pin numbering follows standard dual-row TSSOP convention, pin 1 marked by dot or bevel.

Pin/Terminal	Circuit Role	Design Meaning
OEn1–OEn4	Active-low output enable (nibble 1–4)	Independent 4-bit group control; shorting enables full 16-bit operation
I0–I15	Inverting data inputs	Accept 0–5.5V signals; no bushold - unused inputs must be externally terminated
O0–O15	3-STATE inverting outputs	Drive HIGH/LOW or enter high-Z when corresponding OEn is HIGH
VCC	Power supply	3.3V nominal; decoupling required within 10 mm of pins 24 and 48
GND	Ground reference	Two dedicated ground pins (pins 23 and 47) reduce ground bounce in fast switching

Key Features

Feature	Design Value
5V-tolerant inputs	Supports mixed-voltage system integration without level-shifting circuitry
Nibble-selectable 3-STATE	Enables partial bus isolation - e.g., disable only upper address nibble during refresh cycles
High-current drive (64 mA sink)	Drives 10+ TTL loads or 50 Ω transmission lines directly, reducing external buffering needs
Glitch-free power-up/down	Outputs remain high-Z until VCC stabilizes, preventing bus contention during power sequencing
Latch-up immunity >500 mA	Meets JEDEC JESD78 requirements for robustness in noisy industrial environments

Applications

Memory Address Buffering	PCI/ISA Bus Transceiver Interface
Use Scenario: Driving 16-bit address bus between 3.3V microcontroller and 5V SRAM or Flash memory. IC Role / Device Role / Timing Role: Inverting address buffer with per-nibble 3-STATE control to isolate memory banks during page mode access. Use Value: Eliminates need for discrete level shifters while ensuring sub-5 ns enable timing aligns with memory access strobes.	Use Scenario: Interfacing 3.3V host controller to legacy 5V PCI or ISA peripheral cards. IC Role / Device Role / Timing Role: Bidirectional bus driver translating control/address signals with direction managed via OE pin grouping. Use Value: 5V-tolerant inputs and 64 mA sink capability ensure reliable signaling across voltage domains without signal degradation.
Clock Distribution Network	Industrial I/O Expansion Module
Use Scenario: Distributing inverted clock signal to multiple 3.3V peripherals requiring synchronized edge timing. IC Role / Device Role / Timing Role: Low-skew (≤1.0 ns) inverting clock buffer with independent enable per 4-bit segment for dynamic clock gating. Use Value: Propagation delay matching and low output skew maintain <100 ps inter-channel jitter across 16 outputs.	Use Scenario: Expanding GPIO count on programmable logic controllers with isolated 3.3V logic and 5V field-side I/O. IC Role / Device Role / Timing Role: Level-translating buffer for digital input conditioning and output driving in DIN-rail mounted I/O modules. Use Value: ESD ratings (HBM ≥2000 V) and latch-up immunity support operation in electrically noisy factory floor environments.

Memory Address Buffering

PCI/ISA Bus Transceiver Interface

Use Scenario: Driving 16-bit address bus between 3.3V microcontroller and 5V SRAM or Flash memory.

IC Role / Device Role / Timing Role: Inverting address buffer with per-nibble 3-STATE control to isolate memory banks during page mode access.

Use Value: Eliminates need for discrete level shifters while ensuring sub-5 ns enable timing aligns with memory access strobes.

Use Scenario: Interfacing 3.3V host controller to legacy 5V PCI or ISA peripheral cards.

IC Role / Device Role / Timing Role: Bidirectional bus driver translating control/address signals with direction managed via OE pin grouping.

Use Value: 5V-tolerant inputs and 64 mA sink capability ensure reliable signaling across voltage domains without signal degradation.

Clock Distribution Network

Industrial I/O Expansion Module

Use Scenario: Distributing inverted clock signal to multiple 3.3V peripherals requiring synchronized edge timing.

IC Role / Device Role / Timing Role: Low-skew (≤1.0 ns) inverting clock buffer with independent enable per 4-bit segment for dynamic clock gating.

Use Value: Propagation delay matching and low output skew maintain <100 ps inter-channel jitter across 16 outputs.

Use Scenario: Expanding GPIO count on programmable logic controllers with isolated 3.3V logic and 5V field-side I/O.

IC Role / Device Role / Timing Role: Level-translating buffer for digital input conditioning and output driving in DIN-rail mounted I/O modules.

Use Value: ESD ratings (HBM ≥2000 V) and latch-up immunity support operation in electrically noisy factory floor environments.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74LVC16240ADGGR	Lower drive (24 mA sink), no 5V tolerance - requires external clamping diodes for 5V inputs	Suitable only in pure 3.3V systems; not drop-in for mixed-voltage buses	Prefer when cost sensitivity outweighs 5V interface need and layout space is constrained
74LVTH16240MTDX	Includes bushold inputs - eliminates external pull-ups on unused data lines	Better for systems with floating or intermittently driven inputs (e.g., hot-pluggable modules)	Select when input termination overhead must be minimized and board real estate is limited

Compared with SN74LVC16240ADGGR and 74LVTH16240MTDX, the 74LVT16240MTDX offers superior 5V-tolerant I/O without bushold complexity, making it optimal for fixed-function industrial bus interfaces where input stability is ensured by upstream logic.

Availability

74LVT16240MTDX is available at Aetrix Electronics and suitable for memory subsystems, industrial bus interfaces, clock distribution networks, and embedded controller expansion requiring stable component supply and long-term industrial lifecycle support.

Supply support for 74LVT16240MTDX 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 communications infrastructure.

The 74LVT16240MTDX belongs to Fairchild's LVT (Low-Voltage TTL) family, engineered to deliver ABT-class speed at 3.3V while maintaining backward compatibility with 5V TTL systems - targeting memory, bus, and clock interface applications in telecom and industrial control.

FAQ

What is the maximum input voltage rating for 74LVT16240MTDX?

The 74LVT16240MTDX supports DC input voltages from 0 V to 5.5 V across its entire operating temperature range, independent of VCC. This 5V-tolerant capability allows direct interfacing with legacy 5V logic families without external level-shifting components, and is explicitly guaranteed in the Absolute Maximum Ratings and Recommended Operating Conditions tables of the Fairchild datasheet DS012025.

Does 74LVT16240MTDX include bushold circuitry on its inputs?

No, the 74LVT16240MTDX does not include bushold inputs. Bushold functionality is exclusive to the LVTH variant (e.g., 74LVTH16240MTDX). The 74LVT16240MTDX requires unused inputs to be externally terminated to VCC or GND to prevent floating states and potential noise-induced switching - a design consideration confirmed in the General Description and Features sections of DS012025.

What is the output drive strength of 74LVT16240MTDX at 3.3V supply?

At VCC = 3.3 V, the 74LVT16240MTDX delivers –32 mA (source) and +64 mA (sink) output current, as specified in the DC Electrical Characteristics table under IOH and IOL conditions. These values are measured with VOH ≥ VCC – 0.2 V and VOL ≤ 0.55 V respectively, enabling reliable driving of multiple TTL loads or 50 Ω transmission lines without additional buffering.

Is 74LVT16240MTDX compatible with standard 74-series 16240 logic functions?

Yes, the 74LVT16240MTDX is functionally compatible with the original 74 series 16240, as stated in the Features section of DS012025. It replicates the same inverting buffer behavior, 3-STATE control architecture, and pinout mapping - though electrical parameters (voltage levels, timing, drive strength) are optimized for 3.3V operation with 5V-tolerant I/O, not direct 5V supply use.

What package type is used for 74LVT16240MTDX, and what are its key mechanical dimensions?

The 74LVT16240MTDX uses a 48-pin Thin Shrink Small Outline Package (TSSOP), designated MTD48 per Fairchild's ordering code table. It conforms to JEDEC MO-153, measures 6.1 mm wide, has 0.5 mm lead pitch, and includes a non-electrical thermal pad. Physical dimensions are documented in Figure 6 of DS012025, confirming compatibility with standard TSSOP-48 footprints and reflow profiles.

74LVT16240MTDX 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, Inverting

Number of Elements:: 4

Number of Bits per Element:: 4

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

74LVT16240MTDX FAQ

1.How can I place an order for 74LVT16240MTDX through Aetrix?

Please submit a Request for Quotation (RFQ) for 74LVT16240MTDX 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 74LVT16240MTDX reliable?

The price and inventory of 74LVT16240MTDX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVT16240MTDX is usually 5 days.

3.What payment methods are accepted for 74LVT16240MTDX?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVT16240MTDX transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 74LVT16240MTDX?

74LVT16240MTDX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 74LVT16240MTDX 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 74LVT16240MTDX?

For technical support, including 74LVT16240MTDX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVT16240MTDX requirements.

6.How does Aetrix verify that 74LVT16240MTDX is sourced from the original manufacturer or authorized distributors?

All 74LVT16240MTDX 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 74LVT16240MTDX meets industry standards.

7.What is the process for return or replacement of 74LVT16240MTDX?

All 74LVT16240MTDX units undergo pre-shipment inspection (PSI). If there is an issue with 74LVT16240MTDX, 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 74LVT16240MTDX part is unused and in its original packaging.

Return procedure for 74LVT16240MTDX:

1.Submit a request within 90 days.

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

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