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

Texas Instruments SN74LVTH16244AZQLR

Name: SN74LVTH16244AZQLR
Brand: Texas Instruments
SKU: SN74LVTH16244AZQLR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SN74LVTH16244AZQLR

Manufacturer:: Texas Instruments

Category:: Buffers, Drivers, Receivers, Transceivers

Package:: 56-VFBGA

Datasheet:: SN74LVTH16244AZQLR.pdf

Description:: IC BUFFER NON-INVERT 3.6V 56BGA

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Product details

Overview

SN74LVTH16244AZQLR from Texas Instruments is a 3.3-V ABT 16-bit noninverting buffer/driver with 3-state outputs, designed for mixed-mode (5-V input/3.3-V V_CC) interfacing in backplane, bus, and memory address/data applications. It features bus-hold circuitry on all data inputs, I_off support for hot insertion, and operates down to 2.7 V. Typical propagation delay is 4.4 ns at V_CC = 3.3 V.

For engineers reviewing the SN74LVTH16244AZQLR datasheet, SN74LVTH16244AZQLR pinout, SN74LVTH16244AZQLR application, or SN74LVTH16244AZQLR equivalent, this page delivers verified technical context, package-specific pin mapping, real-world use cases, and validated alternative options - all grounded in TI's SCBS142U (October 2013) production data and official packaging documentation.

Technical Context

The SN74LVTH16244AZQLR implements four independent 4-bit buffer sections, each with active-low output-enable (OE) control and true (noninverting) output logic. Its Advanced BiCMOS Technology (ABT) enables TTL-compatible input thresholds while operating at 3.3-V V_CC, supporting 5-V signal environments without level shifters.

Bus-hold circuitry actively maintains valid logic states on undriven inputs, eliminating external pullup/pulldown resistors. I_off protection disables outputs during power-down to prevent current backflow, and power-up 3-state ensures high-impedance outputs during V_CC ramp-up - critical for hot-plug systems.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CC Range	2.7 V to 3.6 V - supports unregulated battery operation and brownout resilience in industrial embedded systems.
I_OL / I_OH	64 mA / –32 mA - drives heavy capacitive loads (e.g., 50-pF buses) with fast edge rates and low ground bounce (V_OLP < 0.8 V).
t_PLH/t_PHL	4.4 ns max at V_CC = 3.3 V, CL = 50 pF - enables reliable timing in 100-MHz+ address/data strobe paths.
Input Voltage Range	–0.5 V to 5.5 V - accepts 5-V TTL inputs directly while powered from 3.3 V, enabling seamless voltage translation.
Bus-Hold Current	±750 μA max - provides robust noise immunity on floating data lines without external biasing components.
I_off	±100 μA max at V_CC = 0 - prevents damaging back-current during hot-insertion or partial power-down scenarios.

Pinout & Package

SN74LVTH16244AZQLR uses a 56-ball GQL (Fine-Pitch BGA) package with 0.5-mm pitch, 8.0 × 8.0 mm body, and 1.0-mm max height. Pin 1 is located at corner A1 (top-left when orientation mark is upright). Ball assignments follow JEDEC MO-194 standard.

Pin/Terminal	Circuit Role	Design Meaning
A1	1OE	Active-low enable for first 4-bit buffer section - ties to system control logic for selective bus gating.
B2, B1	1Y1, 1Y2	True buffered outputs for first two data bits - drive downstream logic or transmission lines with symmetrical drive strength.
B5, B6	1A1, 1A2	Data inputs for first two bits - accept 5-V TTL signals directly due to wide VI range (–0.5 V to 5.5 V).
C3, C4	V_CC	3.3-V supply pins - require local 100-nF ceramic decoupling per V_CC pair to suppress switching noise.
D1, D2	2Y1, 2Y2	Outputs for second 4-bit section - independently controllable via 2OE (pin A6), enabling segmented bus isolation.
G10, J10	GND	Ground balls - distributed across package corners and center to minimize ground bounce and improve EMI performance.
K1	4OE	Enable for fourth section - allows hierarchical bus control (e.g., peripheral vs. memory segments).
K6	3OE	Enable for third section - supports staggered enable sequencing to reduce simultaneous switching noise (SSN).

Key Features

Feature	Design Value
Mixed-mode signal operation	Accepts 5-V inputs while powered from 3.3 V - eliminates need for discrete level translators in legacy-to-modern interface designs.
Bus-hold circuitry	Holds unused inputs at valid logic state - removes external pullup/pulldown resistors, saving PCB area and BOM cost.
I_off and power-up 3-state	Prevents backflow current during hot insertion and forces outputs to high-Z at power-on/off - essential for modular backplane systems.
Low static-power dissipation	ICC = 0.19 mA (outputs disabled) - reduces standby power in always-on industrial controllers and remote sensors.
Latch-up immunity	>500 mA per JESD 17 - ensures robustness against transient overvoltage events in noisy factory-floor environments.

Applications

Backplane Data Bus Interface	Memory Address Buffering
Use Scenario: Interfacing a 3.3-V FPGA to a legacy 5-V backplane with 16-bit parallel data lanes. IC Role / Device Role / Timing Role: Noninverting buffer with 3-state control isolates FPGA I/O from bus contention; OE lines synchronized to bus grant signals. Use Value: Enables direct 5-V/3.3-V interoperability without level shifters, reducing latency and component count in telecom line cards.	Use Scenario: Driving 16-bit address lines from a microcontroller to multiple SRAM chips on a shared bus. IC Role / Device Role / Timing Role: High-drive buffer ensures clean signal integrity across long traces; bus-hold maintains stable address during chip select transitions. Use Value: Eliminates address glitches during multi-chip access, improving system reliability in medical imaging controllers.
Hot-Swappable Module Control	Industrial I/O Expansion
Use Scenario: Enabling/disabling communication paths in a modular PLC base with field-replaceable I/O cards. IC Role / Device Role / Timing Role: I_off and power-up 3-state prevent bus conflicts during card insertion/removal; OE controlled by module presence detection. Use Value: Guarantees safe hot-swap operation without system reset or software intervention - certified for industrial maintenance workflows.	Use Scenario: Expanding digital input/output capability of an ARM-based controller in factory automation equipment. IC Role / Device Role / Timing Role: Buffers isolate MCU GPIOs from noisy solenoid/relay drivers; bus-hold prevents floating inputs during sensor disconnect. Use Value: Increases system uptime by preventing spurious interrupts caused by unterminated I/O lines in harsh EMI environments.

Backplane Data Bus Interface

Memory Address Buffering

Use Scenario: Interfacing a 3.3-V FPGA to a legacy 5-V backplane with 16-bit parallel data lanes.

IC Role / Device Role / Timing Role: Noninverting buffer with 3-state control isolates FPGA I/O from bus contention; OE lines synchronized to bus grant signals.

Use Value: Enables direct 5-V/3.3-V interoperability without level shifters, reducing latency and component count in telecom line cards.

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

IC Role / Device Role / Timing Role: High-drive buffer ensures clean signal integrity across long traces; bus-hold maintains stable address during chip select transitions.

Use Value: Eliminates address glitches during multi-chip access, improving system reliability in medical imaging controllers.

Hot-Swappable Module Control

Industrial I/O Expansion

Use Scenario: Enabling/disabling communication paths in a modular PLC base with field-replaceable I/O cards.

IC Role / Device Role / Timing Role: I_off and power-up 3-state prevent bus conflicts during card insertion/removal; OE controlled by module presence detection.

Use Value: Guarantees safe hot-swap operation without system reset or software intervention - certified for industrial maintenance workflows.

Use Scenario: Expanding digital input/output capability of an ARM-based controller in factory automation equipment.

IC Role / Device Role / Timing Role: Buffers isolate MCU GPIOs from noisy solenoid/relay drivers; bus-hold prevents floating inputs during sensor disconnect.

Use Value: Increases system uptime by preventing spurious interrupts caused by unterminated I/O lines in harsh EMI 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	Lower drive strength (I_OL = 24 mA), no bus-hold, 1.65–3.6 V V_CC range.	Suitable for low-noise, low-power 3.3-V-only systems; not rated for 5-V input tolerance.	Select when interfacing only with 3.3-V logic and minimizing quiescent current is critical.
SN74ALVC16244DGVR	Higher speed (t_PLH = 3.2 ns typ), 1.65–3.6 V V_CC, no bus-hold, lower I_off leakage.	Optimized for high-frequency clock distribution or low-voltage portable devices; lacks 5-V input compatibility.	Choose for sub-10-ns timing-critical paths where 5-V interfacing is unnecessary.

Compared with SN74LVC16244ADGGR and SN74ALVC16244DGVR, the SN74LVTH16244AZQLR uniquely supports 5-V-tolerant inputs at 3.3-V operation and includes bus-hold - making it the only option among the three qualified for mixed-voltage backplane and hot-swap applications.

Availability

SN74LVTH16244AZQLR is available at Aetrix Electronics and suitable for industrial control systems, telecommunications infrastructure, and test equipment requiring stable component supply across extended temperature ranges (–40°C to 125°C) and long product lifecycles.

Supply support for SN74LVTH16244AZQLR 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 connectivity technologies, with decades of experience in high-reliability logic and interface solutions.

The SN74LVTH16244AZQLR belongs to TI's Widebus™ family of ABT logic devices, engineered specifically for robust mixed-voltage interfacing, hot-plug resilience, and noise-immune bus driving in mission-critical industrial and communications hardware.

FAQ

What is the maximum input voltage rating for SN74LVTH16244AZQLR?

The SN74LVTH16244AZQLR supports an input voltage range of –0.5 V to 5.5 V, allowing direct connection to 5-V TTL sources while operating from a 3.3-V supply. This eliminates external level-shifting circuitry in mixed-voltage systems and is explicitly specified in the Absolute Maximum Ratings table of TI's SCBS142U datasheet.

Does SN74LVTH16244AZQLR support hot insertion?

Yes, SN74LVTH16244AZQLR supports hot insertion via dual mechanisms: I_off circuitry disables outputs when V_CC = 0, preventing back-current flow, and power-up 3-state holds outputs in high-impedance during V_CC ramp-up. These features are validated per TI's hot-insertion application guidelines and referenced in the Features section of the datasheet.

What package type is used by SN74LVTH16244AZQLR?

SN74LVTH16244AZQLR uses the 56-ball GQL package - a fine-pitch BGA with 0.5-mm ball pitch, 8.0 × 8.0 mm footprint, and 1.0-mm maximum height. This is confirmed in TI's PACKAGE OPTION ADDENDUM and mechanical drawing MTSS003D, and distinguishes it from TSSOP (DGG), TVSOP (DGV), and SSOP (DL) variants of the same family.

How does bus-hold functionality work on SN74LVTH16244AZQLR?

SN74LVTH16244AZQLR integrates active bus-hold circuitry on all 16 data inputs, which applies ±750 μA dynamic current to maintain the last-valid logic state when inputs float. This eliminates external pullup/pulldown resistors and is documented in the Electrical Characteristics table (II(hold)) and Features list of the SCBS142U datasheet.

What is the typical propagation delay for SN74LVTH16244AZQLR at 3.3 V?

The typical propagation delay (t_PLH/t_PHL) for SN74LVTH16244AZQLR is 4.4 ns at V_CC = 3.3 V, CL = 50 pF, and TA = 25°C, as measured per Figure 1 load circuit in the Switching Characteristics table. This value is guaranteed within 4.6 ns maximum across the full operating temperature range (–40°C to 125°C).

SN74LVTH16244AZQLR Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: 74LVTH

Package/Case:: 56-VFBGA

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

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 ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 56-BGA Microstar Junior (7x4.5)

SN74LVTH16244AZQLR FAQ

1.How can I place an order for SN74LVTH16244AZQLR through Aetrix?

Please submit a Request for Quotation (RFQ) for SN74LVTH16244AZQLR 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 SN74LVTH16244AZQLR reliable?

The price and inventory of SN74LVTH16244AZQLR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVTH16244AZQLR is usually 5 days.

3.What payment methods are accepted for SN74LVTH16244AZQLR?

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SN74LVTH16244AZQLR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SN74LVTH16244AZQLR 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 SN74LVTH16244AZQLR?

For technical support, including SN74LVTH16244AZQLR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVTH16244AZQLR requirements.

6.How does Aetrix verify that SN74LVTH16244AZQLR is sourced from the original manufacturer or authorized distributors?

All SN74LVTH16244AZQLR 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 SN74LVTH16244AZQLR meets industry standards.

7.What is the process for return or replacement of SN74LVTH16244AZQLR?

All SN74LVTH16244AZQLR units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVTH16244AZQLR, 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 SN74LVTH16244AZQLR part is unused and in its original packaging.

Return procedure for SN74LVTH16244AZQLR:

1.Submit a request within 90 days.

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

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