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Texas Instruments 74ACT16244DGGR
- Part No.:
- 74ACT16244DGGR
- Manufacturer:
- Texas Instruments
- Package:
- 48-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
74ACT16244DGGR.pdf
- Description:
- IC BUFF NON-INVERT 5.5V 48TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,947
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Product details
Overview
74ACT16244DGGR from Texas Instruments is a 16-bit non-inverting buffer/line driver with 3-state outputs, designed for memory address and bus driving in high-density digital systems. It operates from 4.5 V to 5.5 V, delivers ±24 mA output drive, supports TTL-compatible inputs, and features flow-through pinout for optimized PCB layout. Its 48-pin TSSOP (DGG) package enables compact placement in industrial control and data acquisition boards.
For engineers reviewing the 74ACT16244DGGR datasheet, 74ACT16244DGGR pinout, 74ACT16244DGGR application, or 74ACT16244DGGR equivalent, key selection criteria include 3-state timing (tPLH/tPHL ≤ 9.4 ns), latch-up immunity (500 mA at 125°C), distributed VCC/GND configuration, and compatibility with 5-V TTL logic families.
Technical Context
The 74ACT16244DGGR implements four independent 4-bit buffer sections, each with active-low OE control and true (non-inverted) outputs. Its EPIC™ CMOS process ensures rail-to-rail output swing and low input capacitance (4.5 pF).
Each section supports symmetrical enable logic, enabling flexible partitioning as one 16-bit, two 8-bit, or four 4-bit drivers. The distributed power/ground pin architecture minimizes switching noise during simultaneous 16-bit transitions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V - Ensures robust operation across industrial 5-V supply tolerances. |
| Output Drive | ±24 mA - Sufficient to drive 50-Ω transmission lines or multiple TTL loads without external buffering. |
| Propagation Delay | tPLH/tPHL ≤ 9.4 ns @ 5 V - Enables reliable operation in 100-MHz bus systems with margin. |
| Input Compatibility | TTL-voltage compatible (VIH = 2 V, VIL = 0.8 V) - Directly interfaces with legacy 74LS and microcontroller GPIOs. |
| 3-State Enable Time | tPZH/tPZL ≤ 10.3 ns - Fast output disable supports dynamic bus sharing in multiplexed architectures. |
| Latch-Up Immunity | 500 mA typical @ 125°C - Meets stringent reliability requirements for extended-temperature industrial deployments. |
| Power Dissipation | 0.85 W max @ TA = 55°C (DGG) - Compatible with standard FR-4 PCB thermal management without heatsinking. |
Pinout & Package
74ACT16244DGGR uses a 48-pin Thin Shrink Small-Outline Package (TSSOP-DGG), 12.6 mm × 6.2 mm × 1.2 mm, with 0.5-mm pitch and Q1 pin-1 orientation. Pin spacing and land pattern follow JEDEC MO-153 and IPC-7351 standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OE–4OE | Active-low output-enable inputs | Independent control per 4-bit section; enables partial bus isolation without full device disable. |
| 1A1–4A4 | Buffer inputs | True (non-inverting) inputs; TTL-compatible thresholds allow direct connection to 3.3-V or 5-V logic with pull-ups if needed. |
| 1Y1–4Y4 | 3-state buffered outputs | Drive bus lines or memory address registers; high-impedance state prevents contention during data arbitration. |
| VCC (Pins 7, 18, 31, 42) | Power supply | Distributed VCC pins reduce simultaneous switching noise and improve PSRR across all 16 outputs. |
| GND (Pins 4, 10, 15, 21, 28, 34, 39, 45) | Ground reference | Eight GND pins provide low-inductance return paths, critical for maintaining signal integrity at >50 MHz edge rates. |
Key Features
| Feature | Design Value |
|---|---|
| Flow-through architecture | Input and output pins arranged on opposite sides of package - eliminates layer jumps and reduces trace length in dense PCB layouts. |
| Distributed VCC/GND | Four VCC and eight GND pins - lowers ground bounce and improves transient response during 16-bit parallel switching. |
| EPIC™ CMOS process | 1-μm technology with enhanced latch-up immunity - enables reliable operation in noisy industrial environments up to 85°C ambient. |
| Widebus™ family compatibility | Pin- and function-compatible with other TI Widebus devices - simplifies design reuse across buffer, transceiver, and register families. |
| 3.3-V/5-V mixed-signal interface support | TTL-compatible inputs and rail-to-rail outputs - allows safe interfacing between 3.3-V controllers and 5-V legacy peripherals without level shifters. |
Applications
| Memory Address Buffering | Industrial Bus Interface |
|---|---|
Use Scenario: Driving 16-bit address buses for SRAM, Flash, or FPGA configuration memory in programmable logic controllers. IC Role / Device Role / Timing Role: Non-inverting 3-state buffer providing low-skew, high-drive address signals with fast enable/disable for memory bank selection. Use Value: Eliminates need for discrete transistor arrays; tPZH ≤ 10.3 ns ensures setup/hold timing compliance with 10-ns memory access cycles. | Use Scenario: Isolating and strengthening parallel control/data buses between microcontrollers and I/O expanders or DACs in factory automation systems. IC Role / Device Role / Timing Role: Bidirectional-capable line driver enabling clean signal propagation over 15-cm PCB traces with minimal reflection. Use Value: ±24 mA drive sustains logic levels under capacitive loading up to 100 pF; distributed GND suppresses crosstalk in multi-channel analog-digital hybrids. |
| Legacy System Upgrade | Test Equipment Signal Conditioning |
Use Scenario: Replacing obsolete 74F244 or 74AS244 in aging test fixtures requiring drop-in 5-V logic compatibility. IC Role / Device Role / Timing Role: Pin-compatible upgrade delivering lower power (ICC = 80 μA typical) and higher noise immunity than bipolar predecessors. Use Value: 500-mA latch-up rating exceeds MIL-STD-883 Class 3001 requirements, extending field life in unregulated power environments. | Use Scenario: Level-shifting and fan-out buffering for pattern generator outputs feeding multiple DUT inputs in automated test equipment. IC Role / Device Role / Timing Role: True-output buffer with independent OE per quadrant - enables synchronized stimulus delivery across four test channels. Use Value: Flow-through pinout allows straight routing on 2-layer test boards; 4.5-pF input capacitance preserves fast edge fidelity (>100 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 |
|---|---|---|---|
| SN74ACT16244DGGR | Same die, identical electrical specs; SN prefix denotes enhanced screening for extended temperature range (–55°C to 125°C). | Required for military/aerospace designs needing full-spec operation beyond 85°C ambient. | Select SN74ACT16244DGGR only when operating above 85°C or requiring MIL-PRF-38535 compliance. |
| 74LVC16244APAG | 3.3-V only (1.65–3.6 V), lower drive (±24 mA), smaller 48-pin TSSOP but different pinout and no TTL input compatibility. | Suitable for modern low-voltage embedded systems; incompatible with 5-V buses or legacy TTL inputs. | Choose 74LVC16244APAG only in new 3.3-V-only designs where voltage translation is already handled elsewhere. |
Compared with 74ACT16244DGGR, SN74ACT16244DGGR adds extended temperature capability without layout changes, while 74LVC16244APAG reduces power and size at the cost of 5-V interoperability and pin compatibility - making 74ACT16244DGGR the optimal choice for industrial 5-V bus consolidation.
Availability
74ACT16244DGGR is available at Aetrix Electronics and suitable for industrial control systems, programmable logic controller (PLC) backplanes, and legacy system upgrades requiring stable component supply and long-term lifecycle assurance.
Supply support for 74ACT16244DGGR 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 decades of experience in high-reliability industrial and automotive ICs.
The 74ACT16244DGGR belongs to TI's Widebus™ family of high-speed CMOS logic, engineered specifically for dense, noise-sensitive bus interface and memory addressing applications in industrial automation and instrumentation.
FAQ
What is the maximum operating temperature for the 74ACT16244DGGR?
The 74ACT16244DGGR is characterized for operation from –40°C to +85°C ambient temperature. This range is validated per TI's recommended operating conditions and supports deployment in industrial enclosures without forced cooling. Exceeding 85°C ambient may degrade timing margins and increase ICC leakage; for extended-temperature use, consider the SN74ACT16244DGGR variant rated to 125°C.
Does the 74ACT16244DGGR support 3.3-V input logic levels?
The 74ACT16244DGGR has TTL-compatible inputs (VIH = 2.0 V min, VIL = 0.8 V max), so it reliably accepts 3.3-V logic HIGH signals. However, its minimum VIH threshold means 3.3-V CMOS outputs (typically 2.4 V min at VCC = 3.3 V) may not guarantee consistent recognition - use a pull-up resistor to 5 V or level translator if interfacing with unbuffered 3.3-V CMOS sources.
Can the 74ACT16244DGGR be used in place of the 74F244?
Yes, the 74ACT16244DGGR is a functional and pin-compatible replacement for the 74F244 in 5-V systems. It offers superior performance: lower power (ICC = 80 μA vs. ~50 mA), faster propagation (≤9.4 ns vs. ~10 ns), and higher latch-up immunity (500 mA vs. ~100 mA). No PCB changes are required, but verify timing closure due to reduced delay skew.
What is the purpose of the multiple VCC and GND pins on the 74ACT16244DGGR?
The 74ACT16244DGGR features four VCC and eight GND pins to minimize simultaneous switching noise and improve power integrity. Distributed power/ground connections reduce inductance in high-frequency current loops, suppress ground bounce during 16-bit parallel transitions, and maintain stable VOH/VOL across all outputs - critical for maintaining signal integrity in high-speed bus applications.
Is the 74ACT16244DGGR RoHS compliant and lead-free?
Yes, the 74ACT16244DGGR is RoHS compliant and uses NiPdAu (NIPDAU) lead finish. Per TI's packaging addendum, it carries MSL Level-1 rating (unlimited floor life at ≤30°C/60% RH) and is qualified for peak reflow at 260°C. The part marking "ACT16244" appears on the top surface, and full compliance documentation is available via TI's Quality & Environmental page.
74ACT16244DGGR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74ACT
- Package/Case:
- 48-TFSOP (0.240", 6.10mm 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:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-TSSOP
74ACT16244DGGR FAQ
1.How can I place an order for 74ACT16244DGGR through Aetrix?
Please submit a Request for Quotation (RFQ) for 74ACT16244DGGR 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 74ACT16244DGGR reliable?
The price and inventory of 74ACT16244DGGR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74ACT16244DGGR is usually 5 days.
3.What payment methods are accepted for 74ACT16244DGGR?
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Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74ACT16244DGGR?
74ACT16244DGGR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74ACT16244DGGR 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 74ACT16244DGGR?
For technical support, including 74ACT16244DGGR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74ACT16244DGGR requirements.
6.How does Aetrix verify that 74ACT16244DGGR is sourced from the original manufacturer or authorized distributors?
All 74ACT16244DGGR 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 74ACT16244DGGR meets industry standards.
7.What is the process for return or replacement of 74ACT16244DGGR?
All 74ACT16244DGGR units undergo pre-shipment inspection (PSI). If there is an issue with 74ACT16244DGGR, 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 74ACT16244DGGR part is unused and in its original packaging.
Return procedure for 74ACT16244DGGR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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