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

Texas Instruments 74ALVTH16240DLG4

Name: 74ALVTH16240DLG4
Brand: Texas Instruments
SKU: 74ALVTH16240DLG4
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 74ALVTH16240DLG4

Manufacturer:: Texas Instruments

Category:: Buffers, Drivers, Receivers, Transceivers

Package:: 48-BSSOP (0.295", 7.50mm Width)

Datasheet:: 74ALVTH16240DLG4.pdf

Description:: IC BUFFER INVERT 3.6V 48SSOP

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Product details

Overview

74ALVTH16240DLG4 from Texas Instruments is a 16-bit inverting buffer/driver with 3-state outputs, designed for 2.5-V or 3.3-V V_CC operation and TTL-level 5-V system interfacing. It delivers ±32/64 mA drive at 3.3 V, supports mixed-mode signaling (5-V inputs with 2.3–3.6-V V_CC), and features bus-hold circuitry to eliminate external pullup/pulldown resistors - used in memory address buffering and high-density bus transceivers.

For engineers reviewing the 74ALVTH16240DLG4 datasheet, 74ALVTH16240DLG4 pinout, 74ALVTH16240DLG4 application, or 74ALVTH16240DLG4 equivalent, key selection criteria include its 3.3-V-compatible 3-state output control, auto-3-state behavior above V_CC + 0.5 V, power-off output disable for live insertion, and flow-through pinout optimized for PCB layout in space-constrained embedded bus systems.

Technical Context

This device implements four independent 4-bit inverting buffers, each with symmetrical active-low output-enable (OE) inputs and integrated bus-hold on all data inputs. Its Advanced BiCMOS Technology (ABT) architecture enables low static power dissipation while maintaining high-speed switching performance.

It operates across –40°C to 85°C, supports distributed V_CC/GND pinning to suppress high-speed noise, and enters high-impedance state during power-up/down when V_CC ≤ 1.5 V - eliminating bus contention without external sequencing logic.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CC Range	2.3 V to 3.6 V - supports dual-voltage system interfacing with 5-V TTL inputs
Output Drive (3.3 V)	–32 mA / 64 mA - sufficient to drive heavy capacitive loads and multiple CMOS/TTL inputs
t_PHL/t_PLH (CL = 50 pF)	≤3.3 ns - enables sub-300-MHz bus timing in high-speed digital backplanes
Bus-Hold Current	±75 µA at 3.3 V - maintains valid logic levels on floating inputs without external resistors
I_OFF (V_CC = 0)	±100 µA - ensures safe live insertion and hot-swap capability
Power-Up High-Z	Active below 1.5 V V_CC - prevents output conflict during supply ramp-up
V_OLP (Ground Bounce)	<0.8 V at 3.3 V - reduces signal integrity risk in dense multi-driver layouts

Pinout & Package

74ALVTH16240DLG4 uses a 48-pin TSSOP package (DL suffix per TI documentation), measuring 12.5 mm × 6.1 mm × 1.2 mm max height, with 0.5-mm pitch and JEDEC MO-153 compliance. Pin 1 marked via corner chamfer; gull-wing leads for surface-mount reflow assembly.

Pin/Terminal	Circuit Role	Design Meaning
1A1–1A4, 2A1–2A4, 3A1–3A4, 4A1–4A4 (Pins 47,46,44,43,41,40,38,37,36,35,33,32,30,29,27,26)	Data Inputs (Grouped as 4×4-bit banks)	Inverting input terminals for respective 4-bit buffer sections; accept 5-V tolerant signals
1Y1–1Y4, 2Y1–2Y4, 3Y1–3Y4, 4Y1–4Y4 (Pins 2,3,5,6,8,9,11,12,13,14,16,17,19,20,22,23)	Inverting Outputs (Grouped as 4×4-bit banks)	3-state outputs with bus-hold; driven low when corresponding OE active and A high
1OE–4OE (Pins 1,48,25,24)	Active-Low Output Enables	Independent enable controls per 4-bit section; assert low to activate output; high-Z when high
V_CC (Pins 7,21,34,45)	Supply Voltage	Distributed power pins minimize switching noise; must be decoupled locally per bank
GND (Pins 4,10,15,18,28,31,39,42)	Ground Reference	Eight dedicated ground pins provide low-inductance return paths for high-speed switching

Key Features

Feature	Design Value
Auto-3-State Detection	Outputs automatically enter high-impedance when voltage exceeds V_CC + 0.5 V - prevents bus contention during hot-plug or level-shifting faults
Mixed-Mode Signal Interface	5-V-tolerant inputs with 2.3–3.6-V V_CC - enables direct connection to legacy 5-V logic without external level shifters
Flow-Through Pin Architecture	Input and output pins arranged on opposite sides of package - simplifies layer routing and reduces trace crossovers on 2-layer PCBs
Live Insertion Support	Outputs disabled when V_CC = 0 - allows safe board replacement in powered-backplane systems without disrupting bus operation
Distributed Power/Ground	Four V_CC and eight GND pins interleaved across package - lowers simultaneous switching noise (SSN) by >40% vs. single-rail alternatives

Applications

Memory Address Buffering	Industrial Bus Transceiver
Use Scenario: Driving 16-bit address lines from a microcontroller to multiple SRAM or Flash devices on a shared bus. IC Role / Device Role / Timing Role: Inverting 3-state buffer providing isolation, fanout expansion, and bus contention prevention during memory access arbitration. Use Value: Eliminates need for discrete pullups and reduces PCB component count by integrating bus-hold; 3.3-V compatibility avoids level-shifter ICs in modern MCU designs.	Use Scenario: Interfacing a 3.3-V FPGA I/O bank to a 5-V industrial fieldbus controller with bidirectional data exchange. IC Role / Device Role / Timing Role: Level-translating buffer enabling reliable 5-V signal reception and 3.3-V signal transmission with automatic 3-state fallback on overvoltage. Use Value: Auto-3-state behavior protects downstream logic during transient overvoltage events; ±64 mA drive ensures robust noise margin on long bus traces.
High-Density Clock Distribution	Hot-Swappable Module Interface
Use Scenario: Distributing a 100-MHz clock signal to four synchronous peripherals with matched trace lengths and minimal skew. IC Role / Device Role / Timing Role: Low-skew, inverting buffer with <3.3 ns propagation delay and <0.8 V ground bounce - preserving signal integrity across parallel loads. Use Value: Flow-through pinout allows straight-line routing; distributed V_CC/GND minimizes jitter induced by simultaneous switching.	Use Scenario: Enabling hot-swap capability in modular telecom line cards where daughterboards are inserted/removed under power. IC Role / Device Role / Timing Role: Isolation buffer that powers down outputs cleanly when V_CC ramps, preventing bus glitches during card insertion. Use Value: Power-off output disable and high-impedance state below 1.5 V V_CC ensure zero bus disturbance - critical for carrier-grade system uptime.

Memory Address Buffering

Industrial Bus Transceiver

Use Scenario: Driving 16-bit address lines from a microcontroller to multiple SRAM or Flash devices on a shared bus.

IC Role / Device Role / Timing Role: Inverting 3-state buffer providing isolation, fanout expansion, and bus contention prevention during memory access arbitration.

Use Value: Eliminates need for discrete pullups and reduces PCB component count by integrating bus-hold; 3.3-V compatibility avoids level-shifter ICs in modern MCU designs.

Use Scenario: Interfacing a 3.3-V FPGA I/O bank to a 5-V industrial fieldbus controller with bidirectional data exchange.

IC Role / Device Role / Timing Role: Level-translating buffer enabling reliable 5-V signal reception and 3.3-V signal transmission with automatic 3-state fallback on overvoltage.

Use Value: Auto-3-state behavior protects downstream logic during transient overvoltage events; ±64 mA drive ensures robust noise margin on long bus traces.

High-Density Clock Distribution

Hot-Swappable Module Interface

Use Scenario: Distributing a 100-MHz clock signal to four synchronous peripherals with matched trace lengths and minimal skew.

IC Role / Device Role / Timing Role: Low-skew, inverting buffer with <3.3 ns propagation delay and <0.8 V ground bounce - preserving signal integrity across parallel loads.

Use Value: Flow-through pinout allows straight-line routing; distributed V_CC/GND minimizes jitter induced by simultaneous switching.

Use Scenario: Enabling hot-swap capability in modular telecom line cards where daughterboards are inserted/removed under power.

IC Role / Device Role / Timing Role: Isolation buffer that powers down outputs cleanly when V_CC ramps, preventing bus glitches during card insertion.

Use Value: Power-off output disable and high-impedance state below 1.5 V V_CC ensure zero bus disturbance - critical for carrier-grade system uptime.

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit 3-state buffer applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74LVC16244ADGGR	Non-inverting, 3.3-V only, no 5-V tolerance; lower drive (–24/24 mA); no bus-hold or auto-3-state	Suitable for pure 3.3-V systems without legacy interface needs; requires external pullups	Select when cost sensitivity outweighs mixed-voltage flexibility and bus-hold convenience
74ALVCH16244DLR	Inverting, 1.65–3.6-V range, 5-V tolerant inputs, but lacks auto-3-state and has higher ICC (5.5 mA vs. 0.1 mA disabled)	Better for ultra-low-voltage operation (1.65 V), but less robust for hot-swap and overvoltage scenarios	Prefer when operating below 2.3 V or needing wider V_CC range - not for live-insertion-critical systems

Compared with SN74LVC16244ADGGR and 74ALVCH16244DLR, the 74ALVTH16240DLG4 uniquely combines 5-V input tolerance, auto-3-state protection, bus-hold integration, and live-insertion support - making it the only choice for legacy-interfaced, hot-swap-capable, high-reliability bus systems.

Availability

74ALVTH16240DLG4 is available at Aetrix Electronics and suitable for memory subsystems, industrial fieldbus interfaces, high-density clock distribution networks, and hot-swappable module interconnects requiring stable component supply across extended product lifecycles.

Supply support for 74ALVTH16240DLG4 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 innovation in high-speed interface and bus technology.

The ALVTH family was engineered for high-density, mixed-voltage bus systems in telecommunications, computing, and industrial automation - prioritizing signal integrity, power efficiency, and system-level reliability over raw speed alone.

FAQ

What is the operating temperature range for the 74ALVTH16240DLG4?

The 74ALVTH16240DLG4 is characterized for operation from –40°C to 85°C, matching the commercial-grade SN74ALVTH16240 specification. This range supports deployment in industrial control panels, network infrastructure equipment, and automotive infotainment head units where ambient temperatures exceed consumer-grade limits.

Does the 74ALVTH16240DLG4 support 5-V input signals while powered from 3.3 V?

Yes, the 74ALVTH16240DLG4 accepts 5-V input signals with V_CC between 2.3 V and 3.6 V - a core feature confirmed in the Absolute Maximum Ratings and Recommended Operating Conditions tables. This eliminates external level shifters when interfacing with legacy 5-V logic families.

How does the bus-hold circuit function on the 74ALVTH16240DLG4 inputs?

The 74ALVTH16240DLG4 integrates active bus-hold circuitry on all data inputs, sinking or sourcing ±75 µA at 3.3 V to maintain valid logic states on unused or floating lines. This replaces external 10-kΩ pullup/pulldown resistors, reducing BOM count and PCB area without compromising noise immunity.

Can the 74ALVTH16240DLG4 be used in hot-swap applications?

Yes - the 74ALVTH16240DLG4 disables outputs when V_CC = 0 and enters high-impedance state during power-up/down below 1.5 V. These features, combined with I_OFF ≤ ±100 µA, make the 74ALVTH16240DLG4 suitable for live insertion in backplane and modular system architectures.

What is the maximum output current drive capability of the 74ALVTH16240DLG4 at 3.3 V?

At V_CC = 3.3 V, the 74ALVTH16240DLG4 delivers –32 mA (high-level sink) and 64 mA (low-level source) per output, as specified in the Recommended Operating Conditions table. This drive strength supports fanout to ≥10 standard TTL loads or ≥20 CMOS inputs under typical conditions.

74ALVTH16240DLG4 Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: 74ALVTH

Package/Case:: 48-BSSOP (0.295", 7.50mm Width)

Packaging:: Tube

Product Status:: Discontinued at Digi-Key

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:: 2.3V ~ 2.7V, 3V ~ 3.6V

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 48-SSOP

74ALVTH16240DLG4 FAQ

1.How can I place an order for 74ALVTH16240DLG4 through Aetrix?

Please submit a Request for Quotation (RFQ) for 74ALVTH16240DLG4 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 74ALVTH16240DLG4 reliable?

The price and inventory of 74ALVTH16240DLG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74ALVTH16240DLG4 is usually 5 days.

3.What payment methods are accepted for 74ALVTH16240DLG4?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74ALVTH16240DLG4 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 74ALVTH16240DLG4?

74ALVTH16240DLG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 74ALVTH16240DLG4 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 74ALVTH16240DLG4?

For technical support, including 74ALVTH16240DLG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74ALVTH16240DLG4 requirements.

6.How does Aetrix verify that 74ALVTH16240DLG4 is sourced from the original manufacturer or authorized distributors?

All 74ALVTH16240DLG4 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 74ALVTH16240DLG4 meets industry standards.

7.What is the process for return or replacement of 74ALVTH16240DLG4?

All 74ALVTH16240DLG4 units undergo pre-shipment inspection (PSI). If there is an issue with 74ALVTH16240DLG4, 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 74ALVTH16240DLG4 part is unused and in its original packaging.

Return procedure for 74ALVTH16240DLG4:

1.Submit a request within 90 days.

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

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