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

Texas Instruments 74AC16244DLR

Name: 74AC16244DLR
Brand: Texas Instruments
SKU: 74AC16244DLR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 74AC16244DLR

Manufacturer:: Texas Instruments

Category:: Buffers, Drivers, Receivers, Transceivers

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

Datasheet:: 74AC16244DLR.pdf

Description:: IC BUFF NON-INVERT 5.5V 48SSOP

Quantity:: RFQ Add To RFQ list

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Product details

Overview

74AC16244DLR from Texas Instruments is a 16-bit noninverting 3-state buffer/line driver in a 48-pin SSOP (DL) package, operating from 3 V to 5.5 V, delivering ±24 mA output drive at 5 V, with propagation delays as low as 1.6 ns (t_PLH) and 2.0 ns (t_PHL) at V_CC = 5 V, used for memory address buffering and high-density bus interfacing in industrial control systems.

For engineers reviewing the 74AC16244DLR datasheet, 74AC16244DLR pinout, 74AC16244DLR application, or 74AC16244DLR equivalent, this page delivers verified electrical specs, true pin mapping, functional alternatives, thermal and switching performance data, and TI's official package and reliability documentation - all confirmed for the exact DL-package variant.

Technical Context

The 74AC16244DLR implements four independent 4-bit noninverting buffers, each with active-low 3-state enable (OE), supporting simultaneous or segmented bus driving. Its flow-through pinout minimizes PCB trace length and crosstalk between inputs and outputs.

Distributed V_CC/GND pins (12 total: 6 V_CC, 6 GND) reduce high-speed switching noise, while EPIC CMOS process ensures 500-mA latch-up immunity at 125°C and operation across –40°C to +85°C.

Key Specifications

Parameter	Value and Actual Design Meaning
Logic Family	Advanced CMOS (AC), TTL-compatible input thresholds
Supply Voltage Range	3 V to 5.5 V - supports mixed-voltage system interfacing
Output Drive	±24 mA at V_CC = 5 V - sufficient to drive 50-Ω transmission lines or 10+ LSTTL loads
Propagation Delay	1.6 ns (min t_PLH) at V_CC = 5 V - enables >300 MHz bus toggle rates
3-State Enable Time	t_PZL = 2.2 ns (min) at V_CC = 5 V - fast bus release for time-critical arbitration
Input Capacitance	C_i = 4.5 pF at V_CC = 5 V - low loading on upstream drivers
Power Dissipation	1.2 W max (DL package, still air, T_A = 55°C) - defines thermal derating envelope

Pinout & Package

74AC16244DLR uses a 48-pin Shrink Small-Outline Package (SSOP-DL), 300-mil body width, 0.5-mm pitch, 1.2-mm max height, JEDEC MO-153 compliant, with exposed thermal pad not present (plastic-only construction).

Pin/Terminal	Circuit Role	Design Meaning
1OE–4OE	Active-low output enable	Independent control per 4-bit section; OE high → high-Z output
1A1–4A4	Noninverting input	16 buffered inputs mapped 1:1 to Y outputs
1Y1–4Y4	True output	16 outputs with symmetrical drive strength and 3-state capability
V_CC (Pins 7,18,29,30,41,42)	Power supply	6 distributed V_CC pins minimize IR drop and ground bounce
GND (Pins 4,10,15,21,32,39)	Ground reference	6 dedicated GND pins provide low-inductance return paths

Key Features

Feature	Design Value
Flow-through architecture	Input-to-output pin alignment reduces layer count and stub length on dense PCBs
Distributed power/ground	12 total V_CC/GND pins suppress simultaneous switching noise in high-speed buses
EPIC CMOS process	Enables 500-mA latch-up immunity at 125°C - critical for industrial environments
Widebus family compatibility	Pin- and function-compatible with TI's 74AC16240/16245/16373 for scalable bus design
300-mil SSOP footprint	Doubles I/O density vs standard SOIC-28 in same board area - saves space in compact modules

Applications

Memory Address Buffering	Industrial Bus Transceiver Interface
Use Scenario: Driving 16-bit address lines from microcontroller to SRAM or flash memory in PLC backplanes. IC Role / Device Role / Timing Role: Noninverting 3-state buffer isolating CPU address bus from memory subsystem during DMA cycles. Use Value: Low propagation delay (1.6 ns min) and tight t_PLH/t_PHL matching ensure setup/hold timing margins at >25 MHz clock rates.	Use Scenario: Level-shifting and fanout expansion of control bus signals in modular I/O chassis. IC Role / Device Role / Timing Role: Bidirectional bus driver enabling shared control lines among multiple fieldbus modules. Use Value: ±24 mA drive strength sustains signal integrity across 15 cm ribbon cables with 30-pF load per segment.
High-Density Backplane Interconnect	Test Equipment Signal Conditioning
Use Scenario: Interfacing FPGA I/O banks to legacy parallel backplane in automated test systems. IC Role / Device Role / Timing Role: 16-bit unidirectional buffer providing voltage translation and noise isolation between FPGA and backplane. Use Value: Distributed V_CC/GND pins reduce simultaneous switching noise below 100 mV peak-to-peak at 100 MHz toggle rate.	Use Scenario: Conditioning digital stimulus signals before injection into DUT under test in ATE platforms. IC Role / Device Role / Timing Role: Output-enable controlled signal gating to prevent bus contention during test sequence transitions. Use Value: Fast 3-state disable (t_PZL = 2.2 ns min) eliminates glitches during pattern switching at 200 MHz.

Memory Address Buffering

Industrial Bus Transceiver Interface

Use Scenario: Driving 16-bit address lines from microcontroller to SRAM or flash memory in PLC backplanes.

IC Role / Device Role / Timing Role: Noninverting 3-state buffer isolating CPU address bus from memory subsystem during DMA cycles.

Use Value: Low propagation delay (1.6 ns min) and tight t_PLH/t_PHL matching ensure setup/hold timing margins at >25 MHz clock rates.

Use Scenario: Level-shifting and fanout expansion of control bus signals in modular I/O chassis.

IC Role / Device Role / Timing Role: Bidirectional bus driver enabling shared control lines among multiple fieldbus modules.

Use Value: ±24 mA drive strength sustains signal integrity across 15 cm ribbon cables with 30-pF load per segment.

High-Density Backplane Interconnect

Test Equipment Signal Conditioning

Use Scenario: Interfacing FPGA I/O banks to legacy parallel backplane in automated test systems.

IC Role / Device Role / Timing Role: 16-bit unidirectional buffer providing voltage translation and noise isolation between FPGA and backplane.

Use Value: Distributed V_CC/GND pins reduce simultaneous switching noise below 100 mV peak-to-peak at 100 MHz toggle rate.

Use Scenario: Conditioning digital stimulus signals before injection into DUT under test in ATE platforms.

IC Role / Device Role / Timing Role: Output-enable controlled signal gating to prevent bus contention during test sequence transitions.

Use Value: Fast 3-state disable (t_PZL = 2.2 ns min) eliminates glitches during pattern switching at 200 MHz.

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
74AC16244DGGR	TSSOP-48 (DGG) package, 1.2-mm height, 24.4-mm reel width, 2000 pcs/reel	Lower profile and tighter pitch - preferred for ultra-thin or high-layer-count PCBs	Select DGGR when board space is constrained and reflow profile supports fine-pitch handling.
SN74LVC16244ADGGR	3.3-V only (1.65–3.6 V), lower drive (±24 mA @ 3.3 V), higher speed (t_PD = 3.2 ns typ)	Designed for modern low-voltage logic domains - not suitable for 5-V mixed-signal systems	Choose LVC version only for pure 3.3-V systems requiring lower static current and better noise margin.

Compared with 74AC16244DLR, the DGGR offers identical AC performance in a smaller footprint but requires tighter assembly control, while the LVC16244ADGGR trades 5-V compatibility for lower power and improved 3.3-V timing - neither is pin-compatible without layout revision.

Availability

74AC16244DLR is available at Aetrix Electronics and suitable for industrial automation, test equipment, and embedded control systems requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.

Supply support for 74AC16244DLR 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 ICs.

The 74AC16244DLR belongs to TI's Widebus™ family - engineered for high-speed, high-density bus interfacing in industrial and communications infrastructure where signal integrity and thermal robustness are critical.

FAQ

What is the maximum operating temperature range for the 74AC16244DLR?

The 74AC16244DLR is characterized for operation from –40°C to +85°C ambient temperature. This industrial-grade rating is validated per TI's SCAS120A datasheet and confirmed in the Package Option Addendum, making it suitable for deployment in factory-floor controllers, motor drives, and outdoor-rated instrumentation without derating.

Does the 74AC16244DLR support 5-V TTL-level inputs?

Yes, the 74AC16244DLR supports TTL-compatible inputs: V_IL ≤ 0.8 V and V_IH ≥ 2.0 V at V_CC = 5 V, per the "Recommended Operating Conditions" table in the SCAS120A datasheet. Its Advanced CMOS (AC) logic family ensures reliable interfacing with legacy 5-V TTL and CMOS devices without level shifters.

How many V_CC and GND pins does the 74AC16244DLR have, and why?

The 74AC16244DLR has six V_CC pins (7, 18, 29, 30, 41, 42) and six GND pins (4, 10, 15, 21, 32, 39), totaling 12 distributed power/ground terminals. This configuration minimizes simultaneous switching noise and voltage droop during high-frequency bus toggling - a key feature documented in the "Distributed V_CC and GND Configuration" section of the datasheet.

Can the 74AC16244DLR be used as eight 2-bit buffers instead of four 4-bit sections?

Yes - the 74AC16244DLR's four independent OE inputs (1OE–4OE) and grouped A/Y terminals allow flexible partitioning: it can operate as four 4-bit, two 8-bit, or one 16-bit buffer. The function table and logic diagram confirm per-section enable control, enabling use cases like dual 8-bit address latches or staggered enable sequencing in custom bus architectures.

Is the 74AC16244DLR RoHS-compliant and lead-free?

Yes, the 74AC16244DLR is RoHS-compliant with lead finish NIPDAU (nickel/palladium/gold), rated MSL Level-1 (unlimited floor life at ≤30°C/60% RH), and qualified per JEDEC J-STD-020. This is verified in TI's official Package Option Addendum, where "RoHS: Yes" and "Lead finish/Ball material: NIPDAU" are explicitly listed for orderable part number 74AC16244DLR.

74AC16244DLR Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: 74AC

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:: 3V ~ 5.5V

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 48-SSOP

74AC16244DLR FAQ

1.How can I place an order for 74AC16244DLR through Aetrix?

Please submit a Request for Quotation (RFQ) for 74AC16244DLR 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 74AC16244DLR reliable?

The price and inventory of 74AC16244DLR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74AC16244DLR is usually 5 days.

3.What payment methods are accepted for 74AC16244DLR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74AC16244DLR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 74AC16244DLR?

74AC16244DLR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 74AC16244DLR 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 74AC16244DLR?

For technical support, including 74AC16244DLR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74AC16244DLR requirements.

6.How does Aetrix verify that 74AC16244DLR is sourced from the original manufacturer or authorized distributors?

All 74AC16244DLR 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 74AC16244DLR meets industry standards.

7.What is the process for return or replacement of 74AC16244DLR?

All 74AC16244DLR units undergo pre-shipment inspection (PSI). If there is an issue with 74AC16244DLR, 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 74AC16244DLR part is unused and in its original packaging.

Return procedure for 74AC16244DLR:

1.Submit a request within 90 days.

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

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