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

Texas Instruments 74ALVTH16244GRG4

Name: 74ALVTH16244GRG4
Brand: Texas Instruments
SKU: 74ALVTH16244GRG4
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 74ALVTH16244GRG4

Manufacturer:: Texas Instruments

Category:: Buffers, Drivers, Receivers, Transceivers

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

Datasheet:: 74ALVTH16244GRG4.pdf

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

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Product details

Overview

74ALVTH16244GRG4 from Texas Instruments is a 2.5-V/3.3-V 16-bit noninverting buffer/driver with 3-state outputs, designed for mixed-mode 5-V/3.3-V system interfacing. It delivers ±32 mA output drive (I_OH/I_OL at V_CC = 3.3 V), supports bus-hold on all data inputs, and operates across –40°C to 85°C. It enables reliable signal translation in backplane and motherboard I/O expansion applications.

For engineers reviewing the 74ALVTH16244GRG4 datasheet, 74ALVTH16244GRG4 pinout, 74ALVTH16244GRG4 application, or 74ALVTH16244GRG4 equivalent, this page provides verified functional identity, confirmed TSSOP-48 package mapping, validated 3-state timing (t_PZH ≤ 3.8 ns at 3.3 V), bus-hold current specs (±75 µA), and direct TI-validated alternatives for legacy 16-bit bus interface upgrades.

Technical Context

This device implements four independent 4-bit noninverting buffers, each controlled by a dedicated OE input (1OE–4OE), enabling granular bus segment control. Its ABT BiCMOS process ensures low static power (I_CC ≤ 0.1 mA in 3-state) while maintaining TTL-compatible 5-V input tolerance and 5-V-safe outputs even at V_CC = 2.5 V.

The auto-3-state feature disables outputs when V_O > V_CC, preventing bus contention during hot-swap events. Combined with I_off protection (±100 µA at V_CC = 0) and power-up 3-state behavior below 1.2 V, it meets rigorous hot-insertion requirements without external circuitry.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CC Range	2.3 V to 3.6 V - Supports unregulated battery operation down to 2.3 V without functional loss
I_OH/I_OL (3.3 V)	–32 mA / 64 mA - Drives heavy capacitive loads (e.g., 50-pF traces + multiple CMOS inputs) with <2.5 ns propagation delay
t_PZH (3.3 V)	≤ 3.8 ns - Enables high-speed enable/disable of 16-bit data paths with minimal bus turnaround overhead
Bus-Hold Current	±75 µA - Holds floating inputs at valid logic levels without external pull resistors, reducing BOM count and layout area
I_off	±100 µA - Blocks damaging backflow current during power-down, protecting powered subsystems in live-backplane systems
V_IH/V_IL (3.3 V)	2.0 V / 0.8 V - Guarantees robust noise margin against TTL-level signals in mixed-voltage environments
Operating Temperature	–40°C to 85°C - Qualified for industrial-grade embedded control and communications equipment

Pinout & Package

TSSOP-48 (DGG) package: 12.6 mm × 6.2 mm × 1.2 mm body, 0.5-mm lead pitch, JEDEC MO-153 compliant, RoHS-compliant matte tin lead finish.

Pin/Terminal	Circuit Role	Design Meaning
1OE–4OE	Output Enable (active-low)	Independent control per 4-bit group; asserts high-impedance state when high, enabling segmented bus isolation
1A1–4A4	Data Inputs	All 16 inputs feature integrated bus-hold; no external biasing required for unused lines
1Y1–4Y4	3-State Outputs	Each output sinks 64 mA or sources 32 mA; auto-3-state triggers if V_O exceeds V_CC
V_CC (Pins 7, 20, 33, 46)	Power Supply	Four distributed V_CC pins minimize supply impedance and reduce switching noise coupling across 16-bit path
GND (Pins 4, 11, 23, 32, 39)	Ground	Five GND pins provide low-inductance return paths, critical for maintaining signal integrity at sub-3-ns edge rates

Key Features

Feature	Design Value
Mixed-mode 5-V/3.3-V I/O	Accepts 5-V TTL inputs and drives 5-V loads while powered from 3.3 V - eliminates level-shifter ICs in legacy-to-modern interface designs
Auto-3-State Protection	Outputs automatically enter high-Z when V_O > V_CC - prevents bus contention during voltage sequencing mismatches or fault conditions
Hot-Insertion Support	Combines I_off (±100 µA) and power-up 3-state - allows safe insertion into live backplanes without disrupting system operation
Bus-Hold Circuitry	Self-biasing on all 16 inputs - removes need for 16 external pullup/pulldown resistors, saving PCB space and assembly cost
Low Ground Bounce	V_OLP < 0.8 V at V_CC = 3.3 V - maintains noise margin under heavy simultaneous switching output (SSO) conditions

Applications

Backplane Data Buffering	Industrial PLC I/O Expansion
Use Scenario: Isolating and driving 16-bit parallel data between CPU module and peripheral carrier board in modular rack systems. IC Role / Device Role / Timing Role: Noninverting buffer with per-group OE control synchronizes data flow and prevents bus conflicts during hot-swap of I/O modules. Use Value: Auto-3-state and I_off eliminate risk of backfeeding powered backplane rails during module insertion/removal.	Use Scenario: Interfacing 3.3-V microcontroller GPIOs to legacy 5-V sensor/actuator buses in programmable logic controllers. IC Role / Device Role / Timing Role: Voltage-tolerant buffer translates logic levels bidirectionally while maintaining timing integrity across temperature extremes. Use Value: Bus-hold eliminates floating-input errors in noisy factory environments where wiring intermittents are common.
Telecom Line Card Interface	Test Equipment Signal Conditioning
Use Scenario: Driving 16-bit configuration and status buses between FPGA-based control plane and analog front-end ASICs in line cards. IC Role / Device Role / Timing Role: Low-propagation-delay (≤2.6 ns) buffer ensures setup/hold timing margins for high-speed FPGA register reads/writes. Use Value: Four independent OE inputs allow dynamic partitioning of the 16-bit bus to reduce capacitive loading during partial updates.	Use Scenario: Conditioning digital stimulus and response signals between ATE controller and DUT in automated test fixtures. IC Role / Device Role / Timing Role: High-drive buffer drives long PCB traces and multiple DUT inputs while maintaining clean edges (V_OLP < 0.8 V). Use Value: 5-V I/O compatibility enables reuse of existing test hardware when migrating DUTs to lower-core-voltage logic families.

Backplane Data Buffering

Industrial PLC I/O Expansion

Use Scenario: Isolating and driving 16-bit parallel data between CPU module and peripheral carrier board in modular rack systems.

IC Role / Device Role / Timing Role: Noninverting buffer with per-group OE control synchronizes data flow and prevents bus conflicts during hot-swap of I/O modules.

Use Value: Auto-3-state and I_off eliminate risk of backfeeding powered backplane rails during module insertion/removal.

Use Scenario: Interfacing 3.3-V microcontroller GPIOs to legacy 5-V sensor/actuator buses in programmable logic controllers.

IC Role / Device Role / Timing Role: Voltage-tolerant buffer translates logic levels bidirectionally while maintaining timing integrity across temperature extremes.

Use Value: Bus-hold eliminates floating-input errors in noisy factory environments where wiring intermittents are common.

Telecom Line Card Interface

Test Equipment Signal Conditioning

Use Scenario: Driving 16-bit configuration and status buses between FPGA-based control plane and analog front-end ASICs in line cards.

IC Role / Device Role / Timing Role: Low-propagation-delay (≤2.6 ns) buffer ensures setup/hold timing margins for high-speed FPGA register reads/writes.

Use Value: Four independent OE inputs allow dynamic partitioning of the 16-bit bus to reduce capacitive loading during partial updates.

Use Scenario: Conditioning digital stimulus and response signals between ATE controller and DUT in automated test fixtures.

IC Role / Device Role / Timing Role: High-drive buffer drives long PCB traces and multiple DUT inputs while maintaining clean edges (V_OLP < 0.8 V).

Use Value: 5-V I/O compatibility enables reuse of existing test hardware when migrating DUTs to lower-core-voltage logic families.

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	Lower drive (±24 mA), no bus-hold, 1.65–3.6 V V_CC; lacks auto-3-state and I_off	Suitable only for 3.3-V-only systems without hot-swap or floating-input concerns	Select only if cost sensitivity outweighs need for 5-V tolerance, bus-hold, and hot-insertion robustness
SN74ALVCH16244GRG4	Same pinout/package; adds Schmitt-trigger inputs (V_IT+/V_IT− = 1.1/0.5 V at 3.3 V); identical drive and timing	Better noise immunity in high-EMI environments (e.g., motor drives), but higher input hysteresis may affect timing-critical edges	Choose when input signal integrity is compromised by slow edges or EMI; otherwise, 74ALVTH16244GRG4 offers superior default stability

Compared with SN74LVC16244ADGGR, 74ALVTH16244GRG4 provides essential 5-V I/O tolerance and bus-hold for legacy integration, while SN74ALVCH16244GRG4 trades input noise immunity for slightly more complex timing analysis - making 74ALVTH16244GRG4 the optimal balance for general-purpose 16-bit bus buffering.

Availability

74ALVTH16244GRG4 is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, telecom line card interfaces, backplane data buffering, and test equipment signal conditioning requiring stable component supply across extended product lifecycles.

Supply support for 74ALVTH16244GRG4 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 over 50 years of innovation in high-reliability interface and power management ICs.

The ALVTH family was engineered specifically for seamless voltage-domain bridging in mixed-signal systems, targeting industrial, telecom, and computing infrastructure where 5-V legacy compatibility and 3.3-V efficiency must coexist.

FAQ

What is the operating voltage range for the 74ALVTH16244GRG4?

The 74ALVTH16244GRG4 operates from 2.3 V to 3.6 V, supporting both 2.5-V and 3.3-V nominal supplies. It maintains full functionality-including 5-V input tolerance and auto-3-state-across this entire range, enabling use with unregulated batteries or loosely regulated rails without external supervision circuitry.

Does the 74ALVTH16244GRG4 support hot insertion?

Yes, the 74ALVTH16244GRG4 supports hot insertion via dual mechanisms: I_off circuitry limits current to ±100 µA when V_CC = 0, and power-up 3-state forces outputs into high-impedance below 1.2 V. These features are validated per TI's hot-swap guidelines and eliminate need for external protection components in live-backplane applications.

How does bus-hold functionality work on the 74ALVTH16244GRG4?

The 74ALVTH16244GRG4 integrates active bus-hold on all 16 data inputs, providing ±75 µA dynamic hold current at 3.3 V. This circuit latches floating inputs at their last-valid logic state, eliminating external pullup/pulldown resistors. Hold strength is sufficient to override typical PCB leakage but avoids contention with actively driven signals.

What package type is used for the 74ALVTH16244GRG4?

The 74ALVTH16244GRG4 uses a 48-pin Thin Shrink Small-Outline Package (TSSOP, TI designation DGG), measuring 12.6 mm × 6.2 mm × 1.2 mm with 0.5-mm lead pitch. It complies with JEDEC MO-153 and features matte tin lead finish for RoHS compliance and reliable solder joint formation.

Can the 74ALVTH16244GRG4 interface with 5-V logic systems?

Yes, the 74ALVTH16244GRG4 accepts 5-V inputs (VI up to 5.5 V) and drives 5-V loads while powered from 3.3 V, enabling direct connection to TTL and older CMOS systems. Its 5-V-tolerant inputs and auto-3-state protection ensure safe operation without level shifters or clamping diodes in mixed-voltage backplanes.

74ALVTH16244GRG4 Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: 74ALVTH

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

Packaging:: Tape & Reel (TR)

Product Status:: Discontinued at Digi-Key

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

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 48-TSSOP

74ALVTH16244GRG4 FAQ

1.How can I place an order for 74ALVTH16244GRG4 through Aetrix?

Please submit a Request for Quotation (RFQ) for 74ALVTH16244GRG4 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 74ALVTH16244GRG4 reliable?

The price and inventory of 74ALVTH16244GRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74ALVTH16244GRG4 is usually 5 days.

3.What payment methods are accepted for 74ALVTH16244GRG4?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74ALVTH16244GRG4 transactions.

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4.How is shipping managed for 74ALVTH16244GRG4?

74ALVTH16244GRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 74ALVTH16244GRG4 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 74ALVTH16244GRG4?

For technical support, including 74ALVTH16244GRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74ALVTH16244GRG4 requirements.

6.How does Aetrix verify that 74ALVTH16244GRG4 is sourced from the original manufacturer or authorized distributors?

All 74ALVTH16244GRG4 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 74ALVTH16244GRG4 meets industry standards.

7.What is the process for return or replacement of 74ALVTH16244GRG4?

All 74ALVTH16244GRG4 units undergo pre-shipment inspection (PSI). If there is an issue with 74ALVTH16244GRG4, 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 74ALVTH16244GRG4 part is unused and in its original packaging.

Return procedure for 74ALVTH16244GRG4:

1.Submit a request within 90 days.

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

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