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

Texas Instruments SN74ALVC16244ADLR

Name: SN74ALVC16244ADLR
Brand: Texas Instruments
SKU: SN74ALVC16244ADLR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SN74ALVC16244ADLR

Manufacturer:: Texas Instruments

Category:: Buffers, Drivers, Receivers, Transceivers

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

Datasheet:: SN74ALVC16244ADLR.pdf

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

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Product details

Overview

SN74ALVC16244ADLR from Texas Instruments is a 16-bit non-inverting buffer/driver with 3-state outputs, designed for 1.65-V to 3.6-V V_CC operation, delivering ±24-mA drive strength at 3.3 V and 3 ns max propagation delay. It supports memory-address, clock, and bus-oriented applications in industrial and embedded systems.

For engineers reviewing the SN74ALVC16244ADLR datasheet, SN74ALVC16244ADLR pinout, SN74ALVC16244ADLR application, or SN74ALVC16244ADLR equivalent, key selection criteria include 3-state output control timing (t_en = 4.4 ns, t_dis = 4.1 ns @ 3.3 V), rail-to-rail input compatibility, and SSOP-48 package thermal performance (θ_JA = 63°C/W).

Technical Context

The SN74ALVC16244ADLR implements four independent 4-bit buffers, each with symmetrical active-low output-enable (OE) inputs and true (non-inverting) outputs. Its CMOS design ensures compatibility across 1.65–3.6 V supply rails while maintaining TTL-level logic thresholds.

Each buffer section operates with input voltage thresholds scaled to V_CC (e.g., V_IL = 0.35×V_CC at 1.65 V; V_IH = 2.0 V at 3.0–3.6 V), and output drive capability remains stable across the full operating range - ±24 mA at 3.0 V, ±12 mA at 2.3 V, and ±4 mA at 1.65 V.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CC Range	1.65 V to 3.6 V - enables single-supply interoperability with 1.8-V, 2.5-V, and 3.3-V logic families
t_pd Max	3 ns @ 3.3 V - supports high-speed address/data buffering in memory and bus interfaces
I_OH/I_OL	±24 mA @ 3.0 V - drives heavy capacitive loads or multiple downstream inputs without external amplification
Input Thresholds	V_IH = 2.0 V min @ V_CC ≥ 2.7 V - ensures robust noise margin against 3.3-V TTL-compatible signals
3-State Enable/Disable	t_en = 4.4 ns, t_dis = 4.1 ns @ 3.3 V - enables fast bus arbitration and low-latency output control
ESD Rating	2000-V HBM - meets industrial I/O robustness requirements without external protection
Latch-Up Immunity	>250 mA per JESD 17 - prevents destructive current flow during supply transients or signal overvoltage

Pinout & Package

SN74ALVC16244ADLR uses a 48-pin SSOP (DL) package with 0.5-mm pitch, 12.6 mm × 6.2 mm body size, and 1.2 mm max height. Thermal resistance θ_JA = 63°C/W supports continuous operation at up to 85°C ambient under typical PCB layout conditions.

Pin/Terminal	Circuit Role	Design Meaning
1OE–4OE	Active-low output enable	Independent control of each 4-bit buffer group; must be pulled high via resistor during power-up to ensure Hi-Z state
1A1–4A4	Data inputs	16 total inputs grouped as four 4-bit channels; accept 1.65–3.6 V logic levels with rail-scaled thresholds
1Y1–4Y4	True buffered outputs	16 3-state outputs with ±24-mA drive; high-impedance when corresponding OE is high
V_CC (Pins 7, 21, 30, 44)	Power supply	Four dedicated V_CC pins reduce IR drop and improve noise immunity across wide bus traces
GND (Pins 4, 10, 15, 27, 32, 37, 42, 47)	Ground return	Eight GND pins provide low-inductance return paths and support simultaneous switching noise (SSN) mitigation

Key Features

Feature	Design Value
Rail-to-rail input compatibility	Accepts 0–3.6 V input voltages regardless of V_CC, enabling mixed-voltage system interfacing
Output drive symmetry	±24-mA sourcing/sinking at 3.0 V ensures matched rise/fall times and reduced signal distortion
Low-power 3-state control	IOZ ≤ ±10 µA in Hi-Z mode minimizes standby current in multi-driver bus architectures
Widebus™ architecture	Optimized pinout and internal routing reduce crosstalk and skew between adjacent 4-bit groups
Power-up safe enable logic	OE tied to V_CC via pullup ensures outputs remain Hi-Z until system initialization completes

Applications

Memory Address Buffering	Clock Distribution
Use Scenario: Driving address lines from a microcontroller to multiple SRAM or Flash devices on a shared bus. IC Role / Device Role / Timing Role: 16-bit non-inverting buffer isolating MCU address outputs and driving parallel memory address inputs. Use Value: 3 ns propagation delay and ±24-mA drive maintain setup/hold timing margins across 10+ cm PCB traces at 50 MHz.	Use Scenario: Distributing a single system clock to multiple peripherals requiring synchronized enable/disable control. IC Role / Device Role / Timing Role: 4-channel clock buffer with independent OE inputs enabling per-peripheral clock gating. Use Value: Matched t_en/t_dis (4.1–4.4 ns) ensures sub-nanosecond skew between gated clock domains.
Bus Transceiver Interface	Industrial I/O Expansion
Use Scenario: Bidirectional data bus isolation between processor and legacy peripheral using discrete direction control. IC Role / Device Role / Timing Role: Four independent 4-bit buffers configured as unidirectional segments for half-duplex bus partitioning. Use Value: Rail-compatible inputs accept 3.3-V or 2.5-V peripheral signals; 3-state outputs prevent contention during bus arbitration.	Use Scenario: Expanding GPIO count on PLC or motor controller by buffering digital I/O signals to external modules. IC Role / Device Role / Timing Role: Level-shifting and fanout buffer for industrial digital outputs driving optocouplers or relay drivers. Use Value: 250 mA latch-up immunity and 2000-V HBM ESD rating withstand harsh factory electrical environments.

Memory Address Buffering

Clock Distribution

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

IC Role / Device Role / Timing Role: 16-bit non-inverting buffer isolating MCU address outputs and driving parallel memory address inputs.

Use Value: 3 ns propagation delay and ±24-mA drive maintain setup/hold timing margins across 10+ cm PCB traces at 50 MHz.

Use Scenario: Distributing a single system clock to multiple peripherals requiring synchronized enable/disable control.

IC Role / Device Role / Timing Role: 4-channel clock buffer with independent OE inputs enabling per-peripheral clock gating.

Use Value: Matched t_en/t_dis (4.1–4.4 ns) ensures sub-nanosecond skew between gated clock domains.

Bus Transceiver Interface

Industrial I/O Expansion

Use Scenario: Bidirectional data bus isolation between processor and legacy peripheral using discrete direction control.

IC Role / Device Role / Timing Role: Four independent 4-bit buffers configured as unidirectional segments for half-duplex bus partitioning.

Use Value: Rail-compatible inputs accept 3.3-V or 2.5-V peripheral signals; 3-state outputs prevent contention during bus arbitration.

Use Scenario: Expanding GPIO count on PLC or motor controller by buffering digital I/O signals to external modules.

IC Role / Device Role / Timing Role: Level-shifting and fanout buffer for industrial digital outputs driving optocouplers or relay drivers.

Use Value: 250 mA latch-up immunity and 2000-V HBM ESD rating withstand harsh factory electrical environments.

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
SN74LVC16244ADLR	Lower drive (±24 mA only at 3.3 V; drops to ±12 mA at 2.7 V); identical pinout and function	Suitable for 3.3-V-only systems; not recommended for 1.8-V or mixed-rail designs	Select when V_CC is fixed at 3.3 V and cost optimization is prioritized over rail flexibility
74ALVC16244MTCX	TSSOP-48 package (DGG); same electrical specs but different thermal profile (θ_JA = 70°C/W)	Better suited for space-constrained layouts; requires revalidation of thermal derating at 85°C	Choose for higher-density PCBs where SSOP footprint is prohibitive, accepting slightly higher junction temperature

Compared with SN74ALVC16244ADLR, SN74LVC16244ADLR sacrifices 1.65–2.5 V operation for lower cost, while 74ALVC16244MTCX retains full functionality in a smaller TSSOP package at the expense of thermal margin - making SN74ALVC16244ADLR optimal for mixed-voltage industrial bus buffering with proven thermal headroom.

Availability

SN74ALVC16244ADLR is available at Aetrix Electronics and suitable for memory address buffering, clock distribution, and industrial I/O expansion requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.

Supply support for SN74ALVC16244ADLR 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 signal-path components.

The SN74ALVC16244ADLR belongs to TI's Widebus™ family - engineered specifically to increase density and performance of 3-state memory-address drivers, clock drivers, and bus-oriented receivers/transmitters in industrial and computing systems.

FAQ

What is the maximum operating frequency supported by the SN74ALVC16244ADLR?

The SN74ALVC16244ADLR does not specify a maximum clock frequency, as it is a non-clocked buffer. Its 3 ns max propagation delay at 3.3 V supports reliable operation in address/data paths up to 100 MHz with proper PCB layout and load management. System-level timing depends on external capacitance, trace length, and V_CC; actual usable frequency must be validated per application.

Can the SN74ALVC16244ADLR operate at 1.8 V, and what performance changes occur?

Yes, the SN74ALVC16244ADLR is fully specified for 1.65 V to 3.6 V operation. At 1.8 V, output drive reduces to ±4 mA, propagation delay increases to 3.7 ns, and input thresholds scale to V_IH = 0.65×V_CC ≈ 1.17 V and V_IL = 0.35×V_CC ≈ 0.63 V. All logic functions remain valid, and 3-state control timing is maintained.

How should unused inputs be handled on the SN74ALVC16244ADLR?

All unused inputs on the SN74ALVC16244ADLR must be tied to V_CC or GND to prevent floating nodes that cause increased ICC, noise susceptibility, or erratic output behavior. TI recommends connecting unused OE inputs to V_CC (via pullup) to keep associated outputs in high-impedance state, and unused A inputs to GND or V_CC depending on desired default output state.

Does the SN74ALVC16244ADLR support hot insertion or live insertion into a powered backplane?

No, the SN74ALVC16244ADLR is not designed for hot insertion. Its absolute maximum ratings do not cover powered-board insertion scenarios, and the absence of I_off protection means partial powering can cause excessive current flow through input clamps. For hot-plug applications, use purpose-built hot-swap buffers such as the SN74AVC16T245.

What is the thermal resistance (θ_JA) of the SN74ALVC16244ADLR in its SSOP-48 package?

The SN74ALVC16244ADLR in the DL (SSOP-48) package has a specified junction-to-ambient thermal resistance (θ_JA) of 63°C/W under standard JEDEC test conditions (1-layer 2-oz copper, 1-in² pad). Actual thermal performance improves with enhanced PCB copper area, thermal vias, and airflow - critical for sustained 24-mA output loading at 85°C ambient.

SN74ALVC16244ADLR Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: 74ALVC

Package/Case:: 48-BSSOP (0.295", 7.50mm 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:: 24mA, 24mA

Voltage - Supply:: 1.65V ~ 3.6V

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 48-SSOP

SN74ALVC16244ADLR FAQ

1.How can I place an order for SN74ALVC16244ADLR through Aetrix?

Please submit a Request for Quotation (RFQ) for SN74ALVC16244ADLR 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 SN74ALVC16244ADLR reliable?

The price and inventory of SN74ALVC16244ADLR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74ALVC16244ADLR is usually 5 days.

3.What payment methods are accepted for SN74ALVC16244ADLR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74ALVC16244ADLR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SN74ALVC16244ADLR?

SN74ALVC16244ADLR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SN74ALVC16244ADLR 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 SN74ALVC16244ADLR?

For technical support, including SN74ALVC16244ADLR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74ALVC16244ADLR requirements.

6.How does Aetrix verify that SN74ALVC16244ADLR is sourced from the original manufacturer or authorized distributors?

All SN74ALVC16244ADLR 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 SN74ALVC16244ADLR meets industry standards.

7.What is the process for return or replacement of SN74ALVC16244ADLR?

All SN74ALVC16244ADLR units undergo pre-shipment inspection (PSI). If there is an issue with SN74ALVC16244ADLR, 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 SN74ALVC16244ADLR part is unused and in its original packaging.

Return procedure for SN74ALVC16244ADLR:

1.Submit a request within 90 days.

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

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