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Texas Instruments SN74ABT16240DGGR
- Part No.:
- SN74ABT16240DGGR
- Manufacturer:
- Texas Instruments
- Package:
- -
- Datasheet:
-
SN74ABT16240DGGR.pdf
- Description:
- BUFFER/LINE DRIVER 16-CH INVERTI
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Product details
Overview
SN74ABT16240 from Texas Instruments is a 16-bit inverting buffer/driver with 3-state outputs, designed for high-density bus interfacing in memory address, clock distribution, and data bus systems. It delivers –32 mA IOH and 64 mA IOL drive strength, operates from –40°C to 85°C, and features symmetrical active-low OE inputs for precise bus control in industrial and embedded applications.
For engineers reviewing the SN74ABT16240 datasheet, SN74ABT16240 pinout, SN74ABT16240 application, or SN74ABT16240 equivalent, key selection considerations include its 48-pin DL (SSOP) package, flow-through architecture for optimized PCB layout, distributed VCC/GND pins for noise reduction, and EPIC-II B BiCMOS process enabling low power dissipation with high-speed switching performance.
Technical Context
The SN74ABT16240 implements four independent 4-bit inverting buffers, each with dedicated active-low output-enable (OE) control. Its logic function follows standard positive-logic truth table: when OE = L, Y = NOT(A); when OE = H, Y = Hi-Z.
It uses Texas Instruments' EPIC-II B BiCMOS process for enhanced speed-power trade-off, includes integrated ESD protection exceeding 500 mA latch-up per JESD-17, and employs distributed VCC/GND pin placement across the 48-pin SSOP package to suppress ground bounce (VOLP < 1 V at 5 V, 25°C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Function | Inverting buffer with 3-state outputs; enables bidirectional bus isolation via OE control. |
| Drive Strength | –32 mA IOH / 64 mA IOL at VCC = 5 V; supports heavy capacitive loads and fast edge rates. |
| Operating Temperature | –40°C to +85°C; qualified for industrial-grade embedded and computing environments. |
| Supply Voltage | 4.5 V to 5.5 V; compatible with standard TTL/CMOS 5-V systems and tolerant of supply ripple. |
| Output Ground Bounce | VOLP < 1 V at VCC = 5 V, TA = 25°C; ensures signal integrity during simultaneous switching. |
| Package Type | 48-pin DL (Shrink Small-Outline Package, 300-mil width); doubles I/O density vs. standard SOIC. |
Pinout & Package
SN74ABT16240 is packaged in a 48-pin shrink small-outline package (DL), measuring 15.4 mm × 7.5 mm with 0.5-mm lead pitch. The DL package supports fine-pitch surface-mount assembly and provides optimized thermal and electrical performance for high-speed digital systems.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OE, 2OE, 3OE, 4OE | Active-low output-enable control | Each controls one 4-bit buffer section; all must be low to enable corresponding Y outputs. |
| 1A1–1A4, 2A1–2A4, etc. | Input terminals (16 total) | Non-inverted logic inputs feeding respective inverting buffer stages. |
| 1Y1–1Y4, 2Y1–2Y4, etc. | Inverting 3-state outputs (16 total) | Outputs reflect NOT(A) when OE = L; enter high-impedance state when OE = H. |
| VCC (Pins 7, 21, 31, 42) | Power supply | Distributed VCC pins reduce simultaneous switching noise and improve PDN stability. |
| GND (Pins 4, 15, 27, 38) | Ground reference | Distributed GND pins minimize ground bounce and enhance signal return path integrity. |
Key Features
| Feature | Design Value |
|---|---|
| Flow-through pin architecture | Input and output pins arranged on opposite sides of package to simplify layer routing and reduce trace crossovers. |
| EPIC-II B BiCMOS process | Combines bipolar speed and CMOS density to achieve high drive with low static power consumption. |
| Latch-up immunity | Exceeds 500 mA per JEDEC JESD-17, ensuring robust operation in noisy industrial environments. |
| High-drive 3-state outputs | –32 mA source / 64 mA sink capability enables direct interface with multiple TTL loads or long traces. |
| Widebus™ family compatibility | Pin- and function-compatible with other TI Widebus devices for scalable bus design and reuse. |
Applications
| Memory Address Buffering | Clock Distribution Network |
|---|---|
Use Scenario: Driving address lines from microcontroller or FPGA to multiple SRAM or Flash memory chips in a shared bus architecture. IC Role / Device Role / Timing Role: Inverting 3-state buffer isolating and amplifying address signals while enabling chip-select arbitration. Use Value: High drive strength ensures clean signal edges across loaded buses; flow-through layout minimizes skew between address bits. | Use Scenario: Distributing a single system clock to multiple synchronous peripherals (e.g., ADCs, DACs, FPGAs) with matched trace lengths. IC Role / Device Role / Timing Role: Low-skew, high-fanout clock driver with 3-state control for dynamic clock gating. Use Value: Distributed VCC/GND pins suppress ground bounce, preserving clock edge integrity at >50 MHz frequencies. |
| PCI Bus Interface | Industrial Backplane Interconnect |
Use Scenario: Level-shifting and buffering PCI address/data strobes between legacy 5-V controllers and peripheral cards. IC Role / Device Role / Timing Role: Bidirectional bus transceiver buffer supporting PCI timing requirements and hot-swap isolation. Use Value: Symmetrical OE control allows precise timing of bus release; high IOL drives PCI's 60-Ω parallel termination. | Use Scenario: Interfacing modular I/O cards to a central PLC backplane with shared data/address/control lines. IC Role / Device Role / Timing Role: Robust 3-state buffer providing fault-isolated bus access and ESD-hardened signal conditioning. Use Value: 500 mA latch-up rating and –40°C to +85°C operation ensure reliability in harsh factory-floor environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buffer/driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVT16240DGGR | Lower voltage operation (2.7–3.6 V), reduced drive (–24 mA / 24 mA), LVT logic family. | Designed for mixed-voltage 3.3-V systems; not 5-V tolerant without level translation. | Select when migrating to lower-power 3.3-V bus architectures with compatible voltage rails. |
| 74ABT16244DGGR | Non-inverting output logic; otherwise identical pinout, drive, and package. | Used where signal polarity preservation is required (e.g., data bus drivers without inversion). | Choose when system logic requires true (non-inverted) buffering rather than complemented outputs. |
Compared with SN74ABT16240, SN74LVT16240DGGR offers lower power but reduced voltage range and drive, while 74ABT16244DGGR maintains identical performance and footprint with non-inverting functionality-making it a functional substitute where polarity alignment matters.
Availability
SN74ABT16240 is available at Aetrix Electronics and suitable for memory address buffering, clock distribution networks, PCI bus interfaces, and industrial backplane interconnects requiring stable component supply and long-term industrial temperature support.
Supply support for SN74ABT16240 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, delivering analog, embedded processing, and logic solutions for industrial, automotive, and communications markets.
The SN74ABT16240 belongs to TI's Widebus™ family of high-speed bus interface devices, engineered specifically to increase board density and signal integrity in memory, clock, and data bus systems operating at 5 V.
FAQ
What is the logic function of the SN74ABT16240?
The SN74ABT16240 is a 16-bit inverting buffer with 3-state outputs. Each of its four 4-bit sections performs Y = NOT(A) when the corresponding OE input is low; when OE is high, the outputs go to high-impedance. This behavior is confirmed in the device's function table and logic diagram in the official datasheet SCBS346.
What package type does the SN74ABT16240 use?
The SN74ABT16240 uses a 48-pin shrink small-outline package (DL), also referred to as SSOP, with 300-mil body width and 0.5-mm lead pitch. This package is explicitly specified in the datasheet's ordering information and mechanical drawings, and provides double the I/O density of standard SOIC packages.
How should OE be handled during power-up to ensure high-impedance state?
To guarantee high-impedance outputs during power-up or power-down, each OE input of the SN74ABT16240 must be tied to VCC through a pullup resistor. The minimum resistor value depends on the driver's current-sinking capability, as stated in the datasheet's application guidance - this prevents unintended output activation before system initialization completes.
Does the SN74ABT16240 support 3.3-V operation?
No, the SN74ABT16240 is specified only for 4.5 V to 5.5 V operation. It is not 3.3-V compatible, and applying 3.3 V to VCC will result in undefined or non-compliant operation. For 3.3-V systems, TI recommends alternatives such as the SN74LVT16240, which is explicitly characterized for 2.7–3.6 V supply.
What is the maximum operating temperature range for the SN74ABT16240?
The SN74ABT16240 is characterized for operation from –40°C to +85°C. This industrial temperature range is explicitly stated in the datasheet's "Recommended Operating Conditions" table and applies to all electrical specifications unless otherwise noted.
SN74ABT16240DGGR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Logic Type:
- -
- Number of Elements:
- -
- Number of Bits per Element:
- -
- Input Type:
- -
- Output Type:
- -
- Current - Output High, Low:
- -
- Voltage - Supply:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
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- Mounting Type:
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- Supplier Device Package:
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SN74ABT16240DGGR FAQ
1.How can I place an order for SN74ABT16240DGGR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74ABT16240DGGR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
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6.How does Aetrix verify that SN74ABT16240DGGR is sourced from the original manufacturer or authorized distributors?
All SN74ABT16240DGGR 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 SN74ABT16240DGGR meets industry standards.
7.What is the process for return or replacement of SN74ABT16240DGGR?
All SN74ABT16240DGGR units undergo pre-shipment inspection (PSI). If there is an issue with SN74ABT16240DGGR, 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 SN74ABT16240DGGR part is unused and in its original packaging.
Return procedure for SN74ABT16240DGGR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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