SN74ABT540NS Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The SN74ABT540NS is an octal inverting buffer and line driver with 3-state outputs in a 20-pin SOIC package. Features ABT logic operating at 5V with high-speed switching and 64mA output current for driving heavy bus loads. Available from stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 20
- Lifecycle
- ACTIVE
- Datasheet
- SN74ABT540NS Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Octal inverting buffer with 3-state outputs provides complete 8-bit bus driving with polarity inversion
- ABT logic family delivers BiCMOS speed with CMOS power consumption for high-performance bus systems
- High output current up to 64mA per channel enables driving of heavily loaded or long bus lines
- 20-pin SOIC package offers compact surface-mount footprint compatible with standard PCB assembly
Applications
The SN74ABT540NS is suited for high-speed bus driving applications in microprocessor systems, memory interfaces, and backplane bus architectures where fast switching and high drive current are required. Its inverting output configuration makes it useful for active-low control signal distribution and bus isolation in complex digital systems. The device is commonly deployed in industrial computing, telecommunications infrastructure, and high-performance embedded systems requiring robust ABT-speed bus buffering.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for SN74ABT540NS:
Bus Driver, ABT Series, 8-Func, 4-Bit, Inverted Output, BICMOS, PDSO20
Bus Driver, ABT Series, 8-Func, 4-Bit, Inverted Output, BICMOS, PDSO20
Frequently Asked Questions
What logic family does the SN74ABT540NS belong to?
The SN74ABT540NS belongs to the ABT (Advanced BiCMOS Technology) logic family, which combines the high speed of bipolar transistors with the low power of CMOS logic, making it faster than standard HC logic while consuming less power than pure TTL devices.
How many bits does the SN74ABT540NS buffer?
The SN74ABT540NS is an 8-bit (octal) inverting buffer, providing eight independent inverting output channels in a single 20-pin SOIC package to drive a complete byte-wide bus or control signal bus.
What output type does the SN74ABT540NS use and why does it matter?
The SN74ABT540NS uses 3-state totem-pole outputs, which allow all outputs to be placed in a high-impedance state via the output enable pin, enabling multiple buffer devices to share the same bus without causing bus contention or signal conflicts.
Is the SN74ABT540NS compatible with 3.3V logic systems?
The SN74ABT540NS is designed as a 5V logic device with TTL-compatible input thresholds. Its outputs can partially interface with 3.3V devices when driven through resistor networks or level translators, but for full 3.3V compatibility a dedicated LVC or ABT family with 3.3V supply is recommended.
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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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