My Inquiry
My Account
Texas Instruments 74AC16244DL
- Part No.:
- 74AC16244DL
- Manufacturer:
- Texas Instruments
- Package:
- 48-BSSOP (0.295", 7.50mm Width)
- Datasheet:
-
74AC16244DL.pdf
- Description:
- IC BUFF NON-INVERT 5.5V 48SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,190
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
74AC16244DL from Texas Instruments is a 16-bit noninverting buffer/line driver with 3-state outputs, designed for memory address driving, bus interfacing, and clock distribution in high-density digital systems. It operates from 3 V to 5.5 V, delivers ±24 mA output drive at 5 V, features 7.1 ns typical propagation delay (VCC = 3.3 V), and supports industrial temperature range (–40°C to +85°C).
For engineers reviewing the 74AC16244DL datasheet, 74AC16244DL pinout, 74AC16244DL application, or 74AC16244DL equivalent, key selection criteria include 3-state bus-driving capability, flow-through pinout for PCB layout optimization, distributed VCC/GND for noise reduction, and compatibility with Widebus™-optimized system architectures.
Technical Context
The 74AC16244DL implements four independent 4-bit buffer sections, each with active-low output-enable (OE) control and true (noninverting) logic transfer. Its flow-through architecture places inputs on one side and outputs on the opposite side of the 48-pin SSOP package, minimizing trace crossovers.
Distributed VCC and GND pins across the package reduce simultaneous switching noise, while EPIC™ (Enhanced-Performance Implanted CMOS) 1-µm process ensures latch-up immunity of 500 mA at 125°C and rail-to-rail input/output voltage tolerance (–0.5 V to VCC + 0.5 V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Function | 16-bit noninverting buffer with 3-state outputs; enables bidirectional bus isolation |
| Supply Voltage Range | 3 V to 5.5 V - supports mixed-voltage system interfacing and legacy 5 V TTL compatibility |
| Output Drive | ±24 mA at VCC = 5 V - sufficient to drive 50-pF loads with controlled edge rates and minimal overshoot |
| Propagation Delay | 7.1 ns typical (A→Y, VCC = 3.3 V) - enables reliable operation in 100+ MHz address/data bus applications |
| Enable Propagation | 7.5 ns typical (OE→Y, VCC = 3.3 V) - ensures precise timing control for bus arbitration and multiplexing |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade embedded and computing equipment |
| Input/Output Voltage Range | –0.5 V to VCC + 0.5 V - allows safe interfacing with overvoltage-tolerant or hot-swap-capable subsystems |
Pinout & Package
74AC16244DL uses a 48-pin Shrink Small-Outline Package (SSOP, DL), 300-mil body width, 0.5 mm pitch, with gull-wing leads and exposed thermal pad not present. Pin 1 identifier is marked in top-left corner per JEDEC MO-153.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OE, 2OE, 3OE, 4OE | Active-low output-enable inputs | Independently disable each 4-bit section; all must be low for corresponding Y outputs to reflect A inputs |
| 1A1–1A4, 2A1–2A4, 3A1–3A4, 4A1–4A4 | Buffer input terminals | Noninverting data inputs grouped into four 4-bit lanes; flow-through layout aligns with output pin positions |
| 1Y1–1Y4, 2Y1–2Y4, 3Y1–3Y4, 4Y1–4Y4 | Buffer output terminals | True (noninverted) 3-state outputs; high-impedance when respective OE is high |
| VCC (Pins 7, 21, 34, 48) | Power supply | Distributed VCC pins minimize IR drop and supply noise coupling between sections |
| GND (Pins 4, 10, 15, 28, 31, 45) | Ground reference | Six dedicated GND pins provide low-inductance return paths and improve signal integrity for high-speed switching |
Key Features
| Feature | Design Value |
|---|---|
| Flow-through pinout | Input and output pins arranged on opposite sides of package - eliminates layer jumps and reduces PCB routing complexity |
| Distributed VCC/GND | Four VCC and six GND pins strategically placed - suppresses ground bounce and improves noise margin in dense layouts |
| EPIC™ CMOS process | 1-µm fabrication with 500 mA latch-up immunity - ensures robustness in electrically noisy industrial environments |
| Widebus™ family compatibility | Pin- and function-compatible with TI's 74AC16240/16244/16373 family - simplifies design reuse and BOM consolidation |
| 3.3 V / 5 V dual-supply operation | Specified performance from 3 V to 5.5 V - supports migration from 5 V to 3.3 V systems without redesign |
Applications
| Memory Address Buffering | System Bus Interface |
|---|---|
|
Use Scenario: Driving 16-bit memory address lines from a microcontroller or FPGA to SRAM/Flash devices. IC Role / Device Role / Timing Role: Noninverting 3-state buffer isolating address bus during DMA cycles or multi-master arbitration. Use Value: Flow-through pinout reduces trace length by >40% vs. conventional packages; 7.1 ns propagation enables sub-100 MHz address setup timing. |
Use Scenario: Interfacing between processor local bus and peripheral I/O expansion bus. IC Role / Device Role / Timing Role: Bidirectional bus driver enabling time-multiplexed data/address sharing with precise OE-controlled enable timing. Use Value: Distributed VCC/GND pins limit simultaneous switching noise to <15 mV peak-to-peak, preserving signal integrity at 50+ MHz bus speeds. |
| Clock Distribution | Industrial Control Backplane |
|
Use Scenario: Fan-out and level-shifting of system clock signals to multiple synchronous peripherals. IC Role / Device Role / Timing Role: Low-skew, noninverting buffer with matched propagation delays across all 16 outputs. Use Value: ±0.7 ns inter-output skew (typical) ensures <1% duty-cycle distortion at 100 MHz, critical for synchronous sampling. |
Use Scenario: Isolating PLC I/O modules from central controller bus under EMI-prone factory conditions. IC Role / Device Role / Timing Role: Robust 3-state interface with 500 mA latch-up immunity and –40°C to +85°C operation. Use Value: EPIC™ process withstands repeated ESD events up to ±4 kV HBM, reducing field failure rate in unshielded backplane 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 |
|---|---|---|---|
| 74AC16244DGGR | TSSOP-48 (DGG) package; 1.2 mm max height vs. DL's 2.0 mm; identical electrical specs and pinout | Better thermal dissipation (0.85 W vs. 1.2 W max) and finer pitch for space-constrained designs | Select DGGR for automated SMT assembly with tighter board area budgets; DL remains viable where height clearance >2.0 mm is available |
| SN74LVC16244ADGGR | Lower VCC range (1.65–3.6 V); 24 mA drive at 3.3 V; 3.5 ns tPLH (VCC = 3.3 V); LVTTL-compatible inputs | Optimized for 3.3 V-only systems; not 5 V tolerant; higher speed but narrower voltage margin | Choose LVC version only if full 5 V operation is unnecessary and sub-5 ns timing is required; DL retains 5 V interoperability |
Compared with 74AC16244DGGR and SN74LVC16244ADGGR, the 74AC16244DL offers unique value in legacy 5 V industrial systems requiring mechanical compatibility with existing SSOP footprints and guaranteed 5 V drive strength, while maintaining identical logic behavior and timing margins.
Availability
74AC16244DL is available at Aetrix Electronics and suitable for industrial control backplanes, memory subsystems, and clock distribution networks requiring stable component supply across extended product lifecycles.
Supply support for 74AC16244DL 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 founded in 1930, specializing in analog, embedded processing, and logic solutions for industrial, automotive, and communications markets.
The 74AC16244DL belongs to TI's Widebus™ family of high-density bus-interface ICs, engineered specifically to maximize PCB layout efficiency and signal integrity in memory, bus, and clock-driven systems.
FAQ
What is the operating temperature range for the 74AC16244DL?
The 74AC16244DL is characterized for industrial operation from –40°C to +85°C. This range is explicitly specified in the "Recommended Operating Conditions" table of the SCAS120A datasheet and applies to all electrical and switching parameters unless otherwise noted. The 74AC16244DL does not support the military –55°C to +125°C range - that specification applies only to the 54AC16244 variant.
Does the 74AC16244DL support 3.3 V operation?
Yes, the 74AC16244DL fully supports 3.3 V operation. Its recommended supply voltage range is 3 V to 5.5 V, and switching characteristics (e.g., 7.1 ns tPLH typical) and DC parameters (VOH/VOL, II, IOZ) are explicitly tested and guaranteed at VCC = 3.3 V ± 0.3 V per the datasheet's "Switching Characteristics" tables.
Is the 74AC16244DL pin-compatible with other Widebus™ buffers?
Yes, the 74AC16244DL is functionally and pin-compatible with other members of TI's Widebus™ 16-bit buffer family, including the 74AC16240 (inverting) and 74AC16373 (latched). All share identical 48-pin DL/DGG footprint, flow-through pinout, and OE/A/Y terminal assignments - confirmed by the shared logic diagram and pinout diagrams in SCAS120A.
What is the maximum output current per pin for the 74AC16244DL?
The 74AC16244DL delivers ±24 mA per output pin at VCC = 4.5 V or 5.5 V, as specified in the "Recommended Operating Conditions" table under IOL and IOH. At VCC = 3 V, it provides ±12 mA. These values represent guaranteed steady-state drive capability into resistive loads, not transient pulse limits.
How many power and ground pins does the 74AC16244DL have?
The 74AC16244DL has four VCC pins (pins 7, 21, 34, 48) and six GND pins (pins 4, 10, 15, 28, 31, 45), as shown in the top-view pin diagram on page 1 of SCAS120A. This distributed configuration minimizes switching noise and improves power delivery integrity across all 16 buffer sections.
74AC16244DL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74AC
- Package/Case:
- 48-BSSOP (0.295", 7.50mm Width)
- Packaging:
- Bulk
- 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:
- 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
74AC16244DL FAQ
1.How can I place an order for 74AC16244DL through Aetrix?
Please submit a Request for Quotation (RFQ) for 74AC16244DL 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 74AC16244DL reliable?
The price and inventory of 74AC16244DL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74AC16244DL is usually 5 days.
3.What payment methods are accepted for 74AC16244DL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74AC16244DL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74AC16244DL?
74AC16244DL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74AC16244DL 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 74AC16244DL?
For technical support, including 74AC16244DL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74AC16244DL requirements.
6.How does Aetrix verify that 74AC16244DL is sourced from the original manufacturer or authorized distributors?
All 74AC16244DL 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 74AC16244DL meets industry standards.
7.What is the process for return or replacement of 74AC16244DL?
All 74AC16244DL units undergo pre-shipment inspection (PSI). If there is an issue with 74AC16244DL, 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 74AC16244DL part is unused and in its original packaging.
Return procedure for 74AC16244DL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
74AC16244DL Tags
-
SN74LVC1G17DBVR
Texas Instruments
-
SN74LVC1G07DCKR
Texas Instruments
-
SN74LVC1G17DCKR
Texas Instruments
-
SN74LVC1G07DBVR
Texas Instruments
-
SN74LVC1G125DCKR
Texas Instruments
-
SN74AHCT1G126DBVR
Texas Instruments
-
SN74LVC1G125DBVR
Texas Instruments
-
SN74AHCT1G125DBVR
Texas Instruments
-
SN74LVC2G17DBVR
Texas Instruments
-
SN74LVC2G07DCKR
Texas Instruments
-
SN74LVC1G34DCKR
Texas Instruments
-
SN74LVC2G17DCKR
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
