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Texas Instruments SN74LVTH16244ADGGR

Name: SN74LVTH16244ADGGR
Brand: Texas Instruments
SKU: SN74LVTH16244ADGGR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SN74LVTH16244ADGGR

Manufacturer:: Texas Instruments

Category:: Buffers, Drivers, Receivers, Transceivers

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

Datasheet:: SN74LVTH16244ADGGR.pdf

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

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Product details

Overview

SN74LVTH16244ADGGR from Texas Instruments is a 3.3-V ABT 16-bit noninverting buffer/driver with 3-state outputs, designed for mixed-mode signal operation (5-V inputs/outputs with 3.3-V V_CC). It features bus-hold circuitry, I_off support for hot insertion, and operates down to 2.7 V. It is used in backplane interface, memory address buffering, and system-level data bus isolation.

For engineers reviewing the SN74LVTH16244ADGGR datasheet, SN74LVTH16244ADGGR pinout, SN74LVTH16244ADGGR application, or SN74LVTH16244ADGGR equivalent, key selection criteria include 3-state enable timing (t_PZH/t_PLZ ≤ 5.4 ns), bus-hold current (±750 µA), hot-insertion compatibility via I_off, and TSSOP-48 package thermal impedance (θ_JA = 70 °C/W).

Technical Context

The SN74LVTH16244ADGGR implements four independent 4-bit noninverting buffers, each with active-low output-enable (OE) control and symmetrical drive strength (I_OL = 64 mA, I_OH = –32 mA at V_CC = 3.3 V). Its ABT BiCMOS architecture enables TTL-compatible interfacing while operating from a 3.3-V supply.

Bus-hold circuitry actively maintains undriven inputs at valid logic levels without external resistors, and power-up 3-state ensures high-impedance outputs during V_CC ramp (Δt/ΔV_CC ≤ 200 µs/V). The device supports unregulated battery operation down to 2.7 V and meets JESD 17 latch-up >500 mA.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CC Range	2.7 V to 3.6 V - supports unregulated Li-ion or buck-regulated supplies without brownout risk
I_OL / I_OH	64 mA / –32 mA at V_CC = 3.3 V - drives 50-pF loads across 16 lines with <4.6 ns propagation delay
t_PLH/t_PHL	1.1–4.6 ns (V_CC = 3.3 V, CL = 50 pF) - enables high-speed bus buffering up to ~200 MHz toggle rate
Bus-Hold Current	±750 µA at V_CC = 3.6 V - eliminates need for external pullups on floating data/address lines
I_off	±100 µA at V_CC = 0 V - prevents backdrive current during hot-plug insertion into live backplanes
θ_JA	70 °C/W (TSSOP-48) - requires minimal PCB copper area for thermal management in industrial ambient
V_IL/V_IH	0.8 V / 2.0 V - compatible with 5-V TTL input thresholds while powered from 3.3 V

Pinout & Package

TSSOP-48 package (DGG), 12.6 mm × 6.2 mm × 1.2 mm max height, lead pitch 0.5 mm, RoHS-compliant NiPdAu finish, MSL Level-1.

Pin/Terminal	Circuit Role	Design Meaning
1OE, 2OE, 3OE, 4OE	Active-low output-enable control per 4-bit group	Independent gating of four 4-bit channels; OE tied to V_CC via pullup ensures high-Z during power-up
1A1–1A4, 2A1–2A4, 3A1–3A4, 4A1–4A4	Data inputs (16 total)	Accept 5-V-tolerant signals; bus-hold maintains state if left floating
1Y1–1Y4, 2Y1–2Y4, 3Y1–3Y4, 4Y1–4Y4	True buffered outputs (16 total)	3-state capable; drive 50-pF loads with VOL ≤ 0.55 V at I_OL = 64 mA
V_CC (Pins 7, 18, 31, 42)	Power supply	Four dedicated V_CC pins reduce IR drop and improve noise immunity across wide bus
GND (Pins 4, 10, 23, 34, 45)	Ground reference	Five GND pins provide low-inductance return paths for all 16 drivers

Key Features

Feature	Design Value
Mixed-mode I/O	5-V input/output voltage tolerance with 3.3-V V_CC enables direct interfacing between legacy 5-V logic and modern 3.3-V systems
Bus-hold circuitry	Eliminates external pullup/pulldown resistors on data/address lines, reducing BOM count and board space
I_off protection	Prevents damaging current flow when device is powered down but connected to live 5-V buses, critical for hot-swap backplanes
Power-up 3-state	Guarantees outputs remain high-impedance during V_CC ramp, avoiding bus contention at power-on
Low ground bounce	V_OLP < 0.8 V at V_CC = 3.3 V ensures clean low-level signaling even under heavy simultaneous switching

Applications

Backplane Interface Buffering	Memory Address Latching
Use Scenario: Isolating CPU address/data buses from high-capacitance backplane traces in modular industrial controllers. IC Role / Device Role / Timing Role: 16-bit noninverting buffer with per-group OE control provides directionally isolated, slew-controlled signal transmission. Use Value: Bus-hold maintains valid states during slot insertion/removal; t_PLH/t_PHL ≤ 4.6 ns supports 100-MHz bus clocking.	Use Scenario: Driving 16-bit address lines from microcontroller GPIO to SRAM or Flash memory in embedded instrumentation. IC Role / Device Role / Timing Role: Level-shifting buffer translates 3.3-V MCU outputs to 5-V-tolerant memory inputs while providing drive strength. Use Value: I_OL = 64 mA ensures fast edge rates into 30-pF memory address capacitance; V_IL/V_IH thresholds match TTL memory requirements.
Hot-Swappable Module I/O	Industrial PLC Data Bus Isolation
Use Scenario: Enabling safe insertion/removal of I/O modules in programmable logic controller racks without powering down the main chassis. IC Role / Device Role / Timing Role: 3-state buffer with I_off and power-up 3-state prevents backdrive and bus contention during hot-swap events. Use Value: I_off ≤ ±100 µA protects upstream drivers; t_PZH/t_PLZ ≤ 6.2 ns ensures rapid enable/disable response during module detection.	Use Scenario: Segregating noisy digital I/O sections from sensitive analog or communication subsystems in factory automation controllers. IC Role / Device Role / Timing Role: Bidirectional bus isolator using OE-controlled 3-state outputs to break ground loops and suppress noise coupling. Use Value: Five GND pins minimize shared-impedance noise; low V_OLP (<0.8 V) preserves noise margin in electrically harsh environments.

Backplane Interface Buffering

Memory Address Latching

Use Scenario: Isolating CPU address/data buses from high-capacitance backplane traces in modular industrial controllers.

IC Role / Device Role / Timing Role: 16-bit noninverting buffer with per-group OE control provides directionally isolated, slew-controlled signal transmission.

Use Value: Bus-hold maintains valid states during slot insertion/removal; t_PLH/t_PHL ≤ 4.6 ns supports 100-MHz bus clocking.

Use Scenario: Driving 16-bit address lines from microcontroller GPIO to SRAM or Flash memory in embedded instrumentation.

IC Role / Device Role / Timing Role: Level-shifting buffer translates 3.3-V MCU outputs to 5-V-tolerant memory inputs while providing drive strength.

Use Value: I_OL = 64 mA ensures fast edge rates into 30-pF memory address capacitance; V_IL/V_IH thresholds match TTL memory requirements.

Hot-Swappable Module I/O

Industrial PLC Data Bus Isolation

Use Scenario: Enabling safe insertion/removal of I/O modules in programmable logic controller racks without powering down the main chassis.

IC Role / Device Role / Timing Role: 3-state buffer with I_off and power-up 3-state prevents backdrive and bus contention during hot-swap events.

Use Value: I_off ≤ ±100 µA protects upstream drivers; t_PZH/t_PLZ ≤ 6.2 ns ensures rapid enable/disable response during module detection.

Use Scenario: Segregating noisy digital I/O sections from sensitive analog or communication subsystems in factory automation controllers.

IC Role / Device Role / Timing Role: Bidirectional bus isolator using OE-controlled 3-state outputs to break ground loops and suppress noise coupling.

Use Value: Five GND pins minimize shared-impedance noise; low V_OLP (<0.8 V) preserves noise margin in electrically harsh environments.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74LVC16244ADGGR	No bus-hold; lower drive (I_OL = 24 mA); 1.65–3.6 V V_CC	Lacks hot-insertion support; unsuitable for undriven bus nodes or backplane use	Select when cost sensitivity outweighs bus-hold and hot-swap needs
SN74ALVCH16244DGGR	Higher speed (t_PLH ≤ 3.2 ns); no bus-hold; 1.65–3.6 V V_CC	Better timing margin for >150-MHz buses; requires external pullups on unused inputs	Select for maximum speed in controlled, fully driven environments

Compared with SN74LVC16244ADGGR and SN74ALVCH16244DGGR, the SN74LVTH16244ADGGR uniquely combines bus-hold, I_off, and 5-V-tolerant I/O-making it the only choice for robust hot-swap and mixed-voltage backplane designs where input floating cannot be guaranteed.

Availability

SN74LVTH16244ADGGR is available at Aetrix Electronics and suitable for industrial PLC backplane interfaces, memory subsystem buffering, hot-swappable I/O modules, and factory automation data bus isolation requiring stable component supply and long-term manufacturability.

Supply support for SN74LVTH16244ADGGR 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 delivering analog, embedded processing, and connectivity solutions for industrial, automotive, and communications markets.

The SN74LVTH16244ADGGR belongs to TI's Widebus™ ABT family, engineered specifically for robust 3.3-V-to-5-V mixed-signal interfacing in mission-critical industrial and telecom infrastructure.

FAQ

What is the recommended operating voltage range for the SN74LVTH16244ADGGR?

The SN74LVTH16244ADGGR is specified for V_CC = 2.7 V to 3.6 V. Operation within this range ensures compliance with all AC/DC specifications including propagation delay, drive strength, and bus-hold functionality. Below 2.7 V, VOL and VOH margins degrade; above 3.6 V risks absolute maximum rating violation.

Does the SN74LVTH16244ADGGR require external pullup resistors on its inputs?

No. The SN74LVTH16244ADGGR integrates bus-hold circuitry on all 16 data inputs, which actively maintains undriven inputs at valid logic states. External pullups are not required and are explicitly discouraged in the datasheet to avoid conflict with internal hold current.

Can the SN74LVTH16244ADGGR safely interface with 5-V logic systems?

Yes. The SN74LVTH16244ADGGR supports mixed-mode operation: inputs tolerate up to 5.5 V, and outputs drive 5-V-tolerant loads while powered from 3.3 V. This allows direct connection to legacy 5-V TTL buses without level shifters.

What thermal considerations apply to the SN74LVTH16244ADGGR in TSSOP-48 package?

The SN74LVTH16244ADGGR in DGG package has θ_JA = 70 °C/W. At full 16-bit drive (I_OL = 64 mA per output), worst-case power dissipation is ~5 mA ICC + 16 × (0.55 V × 0.064 A) ≈ 600 mW, resulting in ~42 °C rise above ambient-well within SOA for standard PCB layouts with 2 oz copper.

How does the SN74LVTH16244ADGGR support hot-insertion in backplane applications?

The SN74LVTH16244ADGGR supports hot insertion via two mechanisms: I_off limits current to ±100 µA when V_CC = 0 V, preventing backdrive into live buses; and power-up 3-state holds outputs high-impedance until V_CC exceeds 1.5 V, eliminating bus contention during ramp-up.

SN74LVTH16244ADGGR Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: 74LVTH

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

Packaging:: Tape & Reel (TR)

Product Status:: Active

Logic Type:: Buffer, Non-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 ~ 125°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 48-TSSOP

SN74LVTH16244ADGGR FAQ

1.How can I place an order for SN74LVTH16244ADGGR through Aetrix?

Please submit a Request for Quotation (RFQ) for SN74LVTH16244ADGGR 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 SN74LVTH16244ADGGR reliable?

The price and inventory of SN74LVTH16244ADGGR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVTH16244ADGGR is usually 5 days.

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SN74LVTH16244ADGGR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SN74LVTH16244ADGGR 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 SN74LVTH16244ADGGR?

For technical support, including SN74LVTH16244ADGGR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVTH16244ADGGR requirements.

6.How does Aetrix verify that SN74LVTH16244ADGGR is sourced from the original manufacturer or authorized distributors?

All SN74LVTH16244ADGGR 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 SN74LVTH16244ADGGR meets industry standards.

7.What is the process for return or replacement of SN74LVTH16244ADGGR?

All SN74LVTH16244ADGGR units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVTH16244ADGGR, 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 SN74LVTH16244ADGGR part is unused and in its original packaging.

Return procedure for SN74LVTH16244ADGGR:

1.Submit a request within 90 days.

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

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