74ACT16244DGGR-NG Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
74ACT16244DGGR-NG is a 16-channel bus buffer by Texas Instruments with TTL-compatible CMOS inputs and 3-state outputs operating from 4.5 V to 5.5 V. Key specs: 16 outputs, 3-state control, 4.5 V–5.5 V supply, SSOP package. Available from stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 48
- Lifecycle
- ACTIVE
- Datasheet
- 74ACT16244DGGR-NG Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 16-channel 3-state bus buffer drives large capacitive loads across 4.5 V to 5.5 V supply range
- TTL-compatible CMOS inputs accept mixed-logic-level signals without level-translation glue logic
- Dual independent output-enable controls allow flexible bus partitioning into two 8-bit groups
- ACT-family switching speed suits high-frequency bus applications up to hundreds of MHz
- SSOP small-outline package minimizes board area in dense digital bus expansion designs
Applications
The 74ACT16244DGGR-NG is used in address and data bus buffering on microprocessor and microcontroller boards where 16 signals must be driven simultaneously at 4.5 V to 5.5 V logic levels. Its 3-state outputs allow multiple drivers to share a common bus without contention, making it ideal for memory expansion, FPGA I/O isolation, and backplane bus interfaces. The device also finds application in industrial control systems and communications equipment where TTL-compatible signal driving over a shared 16-bit bus is required.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for 74ACT16244DGGR-NG:
Frequently Asked Questions
How many output channels does the 74ACT16244DGGR-NG provide, and how is output-enable controlled?
The device provides 16 3-state output channels organized into two independent 8-bit groups, each controlled by a dedicated active-low output-enable pin. This dual-OE architecture lets designers selectively enable or tri-state half the bus, supporting flexible 8-bit or 16-bit bus arbitration in microprocessor and memory systems.
What supply voltage does the 74ACT16244DGGR-NG require, and why is that significant for mixed 5 V/TTL designs?
The 74ACT16244DGGR-NG operates from 4.5 V to 5.5 V, placing it squarely in the 5 V TTL-compatible logic family. Its CMOS inputs accept TTL-level thresholds (V_IL up to 0.8 V, V_IH down to 2.0 V), allowing it to interface directly with older TTL devices or 5 V microcontrollers without additional level-translation components.
Which package does the 74ACT16244DGGR-NG use, and how does it compare to the DIP version for board density?
The 74ACT16244DGGR-NG ships in a 48-pin SSOP (Small Shrink Outline Package) with 0.635 mm pitch, occupying significantly less board area than an equivalent 48-pin DIP. This makes it attractive for high-density PCB layouts in communications equipment and industrial controllers where space is limited but through-hole is not required.
When is the 74ACT16244DGGR-NG a better choice than the 74LVC16244 for bus buffering?
If the entire system runs at 5 V and uses TTL-level signaling, the 74ACT16244DGGR-NG's optimized 4.5 V–5.5 V supply range and ACT-family output drive strength (capable of sinking and sourcing tens of milliamps per channel) outperform the 74LVC16244, which is designed for 1.65 V–3.6 V operation and would need level translation to drive 5 V bus loads reliably.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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