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Texas Instruments SN74ABT16540ADL
- Part No.:
- SN74ABT16540ADL
- Manufacturer:
- Texas Instruments
- Package:
- 48-BSSOP (0.295", 7.50mm Width)
- Datasheet:
-
SN74ABT16540ADL.pdf
- Description:
- IC BUFFER INVERT 5.5V 48SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,035
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Product details
Overview
SN74ABT16540ADL from Texas Instruments is an inverting 16-bit buffer/driver with dual 8-bit sections, 3-state outputs, ±32-mA high-drive capability, and operation over –40°C to 85°C. It serves as a high-speed bus interface in wide-data-path systems such as backplane transceivers and memory expansion modules.
For engineers reviewing the SN74ABT16540ADL datasheet, SN74ABT16540ADL pinout, SN74ABT16540ADL application, or SN74ABT16540ADL equivalent, key selection criteria include output drive strength (–32 mA IOH / 64 mA IOL), 3-state enable logic (dual active-low AND-gated OE inputs), flow-through pin architecture for PCB layout optimization, and SSOP-48 package compatibility with industrial temperature requirements.
Technical Context
This device implements two independent 8-bit inverting buffer sections, each with separate 2-input AND-gated output-enable (OE1/OE2) control where either high input forces all corresponding outputs into high-impedance. The EPIC-IIB BiCMOS process enables low ground bounce (<1 V VOLP at 5 V) and latch-up immunity exceeding 500 mA per JESD-17.
It features distributed VCC/GND pinning to suppress high-speed switching noise, supports TTL-level inputs (VIL = 0.8 V, VIH = 2 V), and delivers propagation delays as low as 1 ns (tPLH/tPHL) at 5 V with 50-pF load - optimized for synchronous data bus buffering in legacy industrial controllers and test equipment.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Function | Inverting 16-bit buffer/driver with dual 8-bit sections and independent 3-state control |
| Supply Voltage | 4.5 V to 5.5 V - compatible with standard 5-V TTL/CMOS bus systems |
| Output Drive | –32 mA IOH / 64 mA IOL - sufficient to drive heavy capacitive loads or multiple TTL inputs |
| Propagation Delay | 1 ns (min) to 4.2 ns (max) at 5 V - ensures timing integrity in high-speed parallel buses |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade embedded applications |
| Input Logic Levels | VIL ≤ 0.8 V, VIH ≥ 2 V - fully compatible with standard TTL voltage thresholds |
| 3-State Enable | Active-low dual OE inputs with AND logic - enables flexible section-level bus isolation |
Pinout & Package
SN74ABT16540ADL uses a 48-pin Shrink Small-Outline Package (SSOP-DL), 300-mil body width, with 0.025-inch (0.635 mm) lead pitch and flow-through pin arrangement minimizing trace crossovers.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OE1, 1OE2, 2OE1, 2OE2 | Section output-enable inputs | Active-low AND-gated controls: any high input disables its 8-bit section's outputs |
| 1A1–1A8, 2A1–2A8 | Data inputs | Inverting inputs for respective 8-bit sections; drive complementary outputs |
| 1Y1–1Y8, 2Y1–2Y8 | Inverting buffered outputs | High-drive 3-state outputs; Y = NOT A when enabled |
| VCC (pins 7, 18, 29, 40) | Power supply | Distributed VCC pins reduce simultaneous switching noise across the bus |
| GND (pins 4, 11, 22, 33, 44) | Ground reference | Five dedicated GND pins ensure low-impedance return paths for all 16 outputs |
Key Features
| Feature | Design Value |
|---|---|
| EPIC-IIB BiCMOS process | Reduces dynamic power vs. pure bipolar while retaining TTL-compatible speed and drive |
| Flow-through pin architecture | Input and output pins aligned on opposite sides - simplifies layer routing and reduces vias |
| Distributed VCC/GND pinning | Minimizes ground bounce and supply rail collapse during full-bus switching events |
| High-current 3-state outputs | –32 mA IOH / 64 mA IOL supports driving >10 standard TTL loads per output |
| Latch-up immunity | Exceeds 500 mA per JESD-17 - robust against transient current faults in noisy environments |
Applications
| Backplane Data Bus Interface | Industrial PLC I/O Expansion |
|---|---|
Use Scenario: Bidirectional data transfer between CPU module and peripheral slots in modular automation chassis. IC Role / Device Role / Timing Role: Inverting 3-state buffer isolating and driving 16-bit parallel address/data bus lines between slots. Use Value: High drive strength ensures signal integrity across 150-mm backplane traces; flow-through pinout simplifies orthogonal routing. | Use Scenario: Extending digital I/O capacity of programmable logic controller mainframes via add-on carrier boards. IC Role / Device Role / Timing Role: Level-shifting and bus-driving interface between microcontroller GPIO and external relay/digital sensor banks. Use Value: Dual-section OE control allows independent enabling of input vs. output banks; industrial temp range ensures reliability in cabinet-mounted designs. |
| Memory Expansion Module | ATE Digital Pattern Generator |
Use Scenario: Adding SRAM or Flash memory banks to legacy embedded controllers with limited native bus width. IC Role / Device Role / Timing Role: Buffering and isolating 16-bit memory data/address lines during read/write cycles. Use Value: Low propagation delay (≤4.2 ns) meets tight setup/hold timing for 25-MHz memory access; 3-state enables shared bus arbitration. | Use Scenario: Driving high-fanout digital stimulus patterns to DUT pins in automated test equipment. IC Role / Device Role / Timing Role: High-current output stage translating FPGA-generated pattern signals to DUT interface levels. Use Value: –32 mA/64 mA drive sustains fast edge rates into 50-Ω terminated loads; latch-up immunity prevents fault-induced resets during test stress. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit inverting buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74ABT162244ADL | Non-inverting 16-bit buffer; identical pinout, drive strength, and temperature range | Used where signal polarity must be preserved (e.g., address bus buffering) | Select when inversion is not required and pin compatibility with SN74ABT16540ADL is critical |
| SN74LVC16244ADGGR | 3.3-V only operation; lower drive (–24 mA/24 mA); different input thresholds (VIH = 2 V min) | Suitable for mixed-voltage 3.3-V systems interfacing to 5-V peripherals via level shifters | Choose for modern low-power designs requiring 3.3-V compatibility and reduced ICC |
Compared with SN74ABT16540ADL, SN74ABT162244ADL preserves signal polarity with identical 5-V operation and drive, while SN74LVC16244ADGGR trades 5-V tolerance and higher drive for 3.3-V efficiency and lower static current - guiding selection based on voltage domain and inversion requirement.
Availability
SN74ABT16540ADL is available at Aetrix Electronics and suitable for industrial PLCs, backplane-based test equipment, and memory expansion modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for SN74ABT16540ADL 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 heritage in high-reliability industrial and automotive components.
The SN74ABT16540ADL belongs to TI's Widebus™ family of high-speed bus interface ICs, designed specifically for robust, low-noise data path expansion in industrial control, instrumentation, and legacy computing systems.
FAQ
What is the operating temperature range for SN74ABT16540ADL?
The SN74ABT16540ADL is characterized for operation from –40°C to +85°C, meeting industrial-grade environmental requirements. This range is confirmed in the recommended operating conditions table of the official datasheet (SCBS208C, April 1997 revision), and applies specifically to the SN74ABT16540A variant packaged in the DL (SSOP) format. The SN74ABT16540ADL does not support extended military temperature ranges.
Does SN74ABT16540ADL support 3.3-V operation?
No, SN74ABT16540ADL requires a 4.5-V to 5.5-V supply and is not rated for 3.3-V operation. Its input thresholds (VIL ≤ 0.8 V, VIH ≥ 2 V) and output drive specifications are defined only within the 5-V domain. Attempting 3.3-V supply will result in undefined logic behavior and failure to meet AC/DC specifications. For 3.3-V systems, consider SN74LVC16244ADGGR as an alternative.
How does the 3-state enable logic work on SN74ABT16540ADL?
The SN74ABT16540ADL uses dual active-low 2-input AND gates per 8-bit section: for Section 1, outputs go high-impedance if either 1OE1 or 1OE2 is high; similarly for Section 2 with 2OE1/2OE2. This design allows independent control of each 8-bit bank. To guarantee high-impedance during power-up, TI recommends tying OE inputs to VCC via a pullup resistor sized per the driver's sink capability - a requirement explicitly stated for SN74ABT16540ADL in the datasheet.
What package type is used by SN74ABT16540ADL?
SN74ABT16540ADL uses the DL package: a 48-pin Shrink Small-Outline Package (SSOP) with 300-mil body width and 0.025-inch lead pitch. This is confirmed in TI's official packaging addendum, where SN74ABT16540ADL is listed as "SSOP (DL) | 48" with tube packaging (25 units). It is distinct from the DGG (TSSOP) and DGV packages used by other variants in the same family.
Is SN74ABT16540ADL pin-compatible with SN74ABT162244ADL?
Yes, SN74ABT16540ADL and SN74ABT162244ADL share identical 48-pin DL (SSOP) package dimensions, pin count, and physical pinout - including matching VCC, GND, input, output, and OE locations. However, SN74ABT162244ADL is non-inverting, so functional replacement requires verifying signal polarity requirements in the target circuit. This pin compatibility is documented in TI's package drawings and confirmed across both devices' ordering information.
SN74ABT16540ADL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74ABT
- Package/Case:
- 48-BSSOP (0.295", 7.50mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Logic Type:
- Buffer, Inverting
- Number of Elements:
- 2
- Number of Bits per Element:
- 8
- 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-SSOP
SN74ABT16540ADL FAQ
1.How can I place an order for SN74ABT16540ADL through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74ABT16540ADL 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 SN74ABT16540ADL reliable?
The price and inventory of SN74ABT16540ADL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74ABT16540ADL is usually 5 days.
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SN74ABT16540ADL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74ABT16540ADL 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 SN74ABT16540ADL?
For technical support, including SN74ABT16540ADL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74ABT16540ADL requirements.
6.How does Aetrix verify that SN74ABT16540ADL is sourced from the original manufacturer or authorized distributors?
All SN74ABT16540ADL 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 SN74ABT16540ADL meets industry standards.
7.What is the process for return or replacement of SN74ABT16540ADL?
All SN74ABT16540ADL units undergo pre-shipment inspection (PSI). If there is an issue with SN74ABT16540ADL, 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 SN74ABT16540ADL part is unused and in its original packaging.
Return procedure for SN74ABT16540ADL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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