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Texas Instruments SN74ABT16244ADGGR
- Part No.:
- SN74ABT16244ADGGR
- Manufacturer:
- Texas Instruments
- Package:
- 48-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
SN74ABT16244ADGGR.pdf
- Description:
- IC BUFF NON-INVERT 5.5V 48TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,491
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Product details
Overview
SN74ABT16244ADGGR from Texas Instruments is a 16-bit noninverting buffer/driver with 3-state outputs in a 48-pin TSSOP package, rated for –40°C to 85°C operation, delivering ±32-mA high-drive capability and 3.5-ns typical propagation delay at 5 V. It serves as a high-density bus interface for memory address, clock distribution, and data bus driving in industrial control backplanes.
For engineers reviewing the SN74ABT16244ADGGR datasheet, SN74ABT16244ADGGR pinout, SN74ABT16244ADGGR application, or SN74ABT16244ADGGR equivalent, key selection criteria include output drive strength (–32 mA IOH / 64 mA IOL), 3-state enable timing (tPZH = 1 ns min), thermal impedance (θJA = 89°C/W), and compatibility with 5-V TTL/CMOS logic systems requiring flow-through PCB layout support.
Technical Context
This device implements four independent 4-bit noninverting buffers, each with active-low 3-state output-enable (OE) control and symmetrical input/output thresholds. Its EPIC-IIB™ BiCMOS process enables low ground bounce (VOLP < 1 V) and latch-up immunity exceeding 500 mA per JESD 70.
The distributed VCC/GND pin architecture minimizes simultaneous switching noise, while the flow-through pinout-inputs on one side, outputs on the opposite-reduces trace crossovers. Each OE input controls four corresponding Y outputs, and all unused inputs must be tied to VCC or GND for stable operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V - Ensures robust operation across industrial 5-V rail tolerances without level-shifting. |
| Output Drive | –32 mA IOH / 64 mA IOL - Directly drives heavy capacitive loads (e.g., >100 pF buses) without external buffers. |
| Propagation Delay | tPLH/tPHL = 1–3.5 ns (CL = 50 pF) - Supports >200-MHz bus toggle rates in synchronous systems. |
| 3-State Enable Time | tPZH/tPZL = 1–4.8 ns - Enables fast bus arbitration and multiplexing in time-critical shared-data paths. |
| Input Thresholds | VIH = 2 V, VIL = 0.8 V - Fully compatible with standard TTL and 5-V CMOS logic families. |
| Thermal Impedance | θJA = 89°C/W (DGG) - Allows sustained full-output operation at ambient up to 70°C without heatsinking. |
| ESD Rating | ±2 kV HBM - Meets industrial I/O robustness requirements without external protection. |
Pinout & Package
SN74ABT16244ADGGR uses a 48-pin Thin Shrink Small-Outline Package (TSSOP, DGG), 12.6 mm × 6.2 mm × 1.2 mm body, with gull-wing leads on 0.5-mm pitch. Pin 1 is marked by a notch or dot in Quadrant Q1 per tape-and-reel orientation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OE, 2OE, 3OE, 4OE | Active-low output-enable inputs | Each controls 4 corresponding Y outputs; pulled high via resistor during power-up to ensure high-Z state. |
| 1A1–1A4, 2A1–2A4, 3A1–3A4, 4A1–4A4 | Buffer input terminals | Four groups of 4 inputs feeding respective 4-bit buffers; all TTL/CMOS-compatible. |
| 1Y1–1Y4, 2Y1–2Y4, 3Y1–3Y4, 4Y1–4Y4 | Noninverting 3-state outputs | True outputs with high-drive capability; enter high-impedance when OE = high. |
| VCC (Pins 7, 18, 31, 42) | Power supply | Distributed VCC pins reduce IR drop and switching noise across the 16-bit bus. |
| GND (Pins 4, 10, 15, 21, 27, 32, 37, 45) | Ground reference | Eight GND pins provide low-inductance return paths for all 16 outputs and enable signals. |
Key Features
| Feature | Design Value |
|---|---|
| High-Drive Outputs | –32 mA IOH / 64 mA IOL supports direct connection to unterminated transmission lines or multi-load buses. |
| Flow-Through Architecture | Inputs on left side, outputs on right side - eliminates layer jumps and vias in dense PCB routing. |
| Distributed Power/Ground | Four VCC and eight GND pins minimize simultaneous switching noise and improve signal integrity. |
| Low Ground Bounce | VOLP < 1 V at 5 V ensures clean logic thresholds even under full-output switching. |
| Widebus™ Compatibility | Pin- and function-compatible with TI's 16-bit Widebus family for scalable bus design. |
Applications
| Memory Address Buffering | Clock Distribution Network |
|---|---|
Use Scenario: Driving 16-bit address lines from a microcontroller to multiple SRAM or Flash devices on a shared bus. IC Role / Device Role / Timing Role: Noninverting 3-state buffer isolating address generation logic from load capacitance of parallel memory chips. Use Value: Delivers 64-mA sink current to charge/discharge bus capacitance rapidly, maintaining setup/hold margins at 20-ns address cycle times. |
Use Scenario: Fan-out of a system clock to multiple peripheral controllers (e.g., UARTs, SPI masters) with matched skew. IC Role / Device Role / Timing Role: Low-skew, high-drive clock driver ensuring monotonic edge transitions across all outputs. Use Value: 3.5-ns max tPLH/tPHL and <1-V VOLP prevent clock jitter accumulation and false triggering in synchronous peripherals. |
| Backplane Data Bus Interface | Industrial I/O Expansion Module |
Use Scenario: Bidirectional data buffering between CPU module and modular I/O carrier board over 16-bit parallel backplane. IC Role / Device Role / Timing Role: Direction-controlled bus transceiver (via OE grouping) enabling read/write isolation and hot-swap safe enable sequencing. Use Value: Four independent OE inputs allow staggered activation of bus segments, reducing inrush current and EMI during module insertion. |
Use Scenario: Interfacing PLC CPU to isolated digital input/output modules requiring robust 5-V logic level translation. IC Role / Device Role / Timing Role: Level-consistent buffer providing noise-immune signal conditioning between controller and field-side optocouplers. Use Value: 2-V VIH / 0.8-V VIL thresholds reject common-mode noise up to ±0.4 V on long I/O traces in electrically noisy factory 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 |
|---|---|---|---|
| SN74ABT16244ADGVR | Same electrical specs; TVSOP (DGV) package, 1.2-mm height, 16.4-mm width - 2.0 mm narrower than DGG. | Better suited for ultra-thin or space-constrained designs where PCB real estate is critical. | Select DGVR when board height ≤1.2 mm is mandatory and thermal margin allows θJA = 93°C/W. |
| SN74ABT16244ADLR | Same electrical specs; SSOP (DL) package, 32.4-mm reel width, higher θJA = 94°C/W, larger footprint. | Preferred for legacy assembly lines using SSOP feeders or where mechanical robustness outweighs density. | Select DLR when existing SMT tooling supports SSOP or when higher mechanical retention is required for vibration-prone environments. |
Compared with SN74ABT16244ADGVR and SN74ABT16244ADLR, the SN74ABT16244ADGGR offers optimal balance of thermal performance (lowest θJA), industry-standard TSSOP handling, and broad reflow compatibility (MSL Level-1), making it the default choice for new 5-V industrial bus designs.
Availability
SN74ABT16244ADGGR is available at Aetrix Electronics and suitable for industrial control backplanes, programmable logic controller (PLC) I/O modules, and embedded computing memory interfaces requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for SN74ABT16244ADGGR 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 expertise in high-speed interface ICs and industrial-grade reliability.
The SN74ABT16244A product line was designed for high-density, high-drive 3-state bus interfacing in industrial, computing, and communications equipment - emphasizing noise immunity, thermal efficiency, and layout-friendly pinouts.
FAQ
What is the operating temperature range for SN74ABT16244ADGGR?
The SN74ABT16244ADGGR is characterized for operation from –40°C to +85°C ambient temperature, meeting industrial-grade environmental requirements. This range is confirmed in the Recommended Operating Conditions table of the official TI datasheet SCBS073H, and applies specifically to the DGG-package variant. The military-grade SN54ABT16244 (WD package) supports –55°C to +125°C, but SN74ABT16244ADGGR does not extend beyond +85°C.
Does SN74ABT16244ADGGR support hot-insertion or live bus swapping?
SN74ABT16244ADGGR supports controlled hot-swap operation when OE inputs are held high (disabled) during insertion, ensuring all outputs remain in high-impedance state until power and control signals stabilize. Its Ioff specification (±100 µA at VCC = 0) prevents back-driving of powered bus segments, and the absolute maximum rating for VO (–0.5 V to 5.5 V) accommodates transient bus voltage mismatches during insertion.
What is the recommended pull-up resistor value for OE pins on SN74ABT16244ADGGR?
Texas Instruments recommends tying OE pins to VCC through a pull-up resistor to ensure high-impedance state during power-up or power-down. The minimum resistor value is determined by the current-sinking capability of the driver controlling OE - typically ≥10 kΩ for standard logic drivers. For direct connection to 5-V rails with no active control, a 4.7-kΩ resistor provides sufficient margin against leakage while minimizing quiescent current.
Can SN74ABT16244ADGGR be used with 3.3-V logic systems?
SN74ABT16244ADGGR is specified only for 4.5–5.5-V operation and is not 3.3-V tolerant. Its VIH = 2 V and VIL = 0.8 V thresholds are optimized for 5-V TTL/CMOS, and applying 3.3-V inputs risks marginal switching or increased static current due to internal clamp diode conduction. For 3.3-V systems, TI recommends SN74LVC16244A or SN74ALVC16244, which are explicitly rated for 3.3-V operation.
How many independent 3-state groups does SN74ABT16244ADGGR provide?
SN74ABT16244ADGGR provides four independent 3-state groups: OE1 controls Y1–Y4, OE2 controls Y5–Y8, OE3 controls Y9–Y12, and OE4 controls Y13–Y16. Each group contains four noninverting buffers with dedicated A-inputs and Y-outputs, enabling flexible partitioning as four 4-bit, two 8-bit, or one 16-bit buffer configuration based on system routing needs.
SN74ABT16244ADGGR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74ABT
- 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:
- 32mA, 64mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-TSSOP
SN74ABT16244ADGGR FAQ
1.How can I place an order for SN74ABT16244ADGGR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74ABT16244ADGGR 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 SN74ABT16244ADGGR reliable?
The price and inventory of SN74ABT16244ADGGR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74ABT16244ADGGR is usually 5 days.
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SN74ABT16244ADGGR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74ABT16244ADGGR 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 SN74ABT16244ADGGR?
For technical support, including SN74ABT16244ADGGR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74ABT16244ADGGR requirements.
6.How does Aetrix verify that SN74ABT16244ADGGR is sourced from the original manufacturer or authorized distributors?
All SN74ABT16244ADGGR 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 SN74ABT16244ADGGR meets industry standards.
7.What is the process for return or replacement of SN74ABT16244ADGGR?
All SN74ABT16244ADGGR units undergo pre-shipment inspection (PSI). If there is an issue with SN74ABT16244ADGGR, 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 SN74ABT16244ADGGR part is unused and in its original packaging.
Return procedure for SN74ABT16244ADGGR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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