SN74AHC540PW-P Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The SN74AHC540PW-P is an 8-bit inverting buffer and line driver with 3-state outputs, operating from a 2 V to 5.5 V supply, housed in a 20-pin TSSOP package. It delivers 8 mA output drive strength and offers high-speed AHC-family performance. Suitable for bus driving, level shifting, and signal buffering in industrial and consumer applications.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 20
- Lifecycle
- ACTIVE
- Datasheet
- SN74AHC540PW-P Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 8-bit inverting buffer with 3-state outputs for bus isolation
- Wide supply voltage range: 2 V to 5.5 V for multi-rail designs
- High output drive strength: ±8 mA for driving bus lines
- Advanced High-Speed CMOS (AHC) technology with low propagation delay
- 20-pin TSSOP package for compact PCB footprint
- RoHS compliant lead-free construction
Applications
The SN74AHC540PW-P is widely used for bus driving and signal buffering in microprocessor systems, memory interfaces, and logic level translation circuits. It suits industrial control boards, data acquisition systems, and any design requiring reliable 8-bit inverted signal routing with output enable control.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for SN74AHC540PW-P:
Bus Driver, AHC/VHC/H/U/V Series, 8-Func, 8-Bit, Inverted Output, CMOS, PDSO20
Bus Driver, AHC/VHC/H/U/V Series, 1-Func, 8-Bit, Inverted Output, CMOS, PDSO20
Bus Driver, AHC/VHC/H/U/V Series, 8-Func, 8-Bit, Inverted Output, CMOS, PDSO20
Frequently Asked Questions
What is the supply voltage range supported by SN74AHC540PW-P, and can it interface with 3.3 V and 5 V logic simultaneously?
SN74AHC540PW-P operates over a supply voltage range of 2 V to 5.5 V, making it compatible with both 3.3 V and 5 V logic families. The 8 outputs each support ±8 mA drive strength, enabling reliable bus interface between mixed-voltage logic in embedded and industrial systems.
How does the 3-state output feature of SN74AHC540PW-P benefit shared-bus architectures?
The 3-state outputs allow SN74AHC540PW-P to be electrically disconnected from a shared bus when its output-enable pins are deasserted, preventing bus contention. This is critical in designs with multiple bus drivers sharing 8 data lines, such as memory-mapped I/O boards operating at up to 5.5 V.
Which package does SN74AHC540PW-P use, and what are typical PCB layout considerations for this package?
SN74AHC540PW-P is housed in a 20-pin TSSOP package with a 0.65 mm pin pitch. The compact body suits high-density PCB layouts; designers should keep bypass capacitors (typically 100 nF) close to the VCC pin to maintain signal integrity at high switching frequencies.
How does SN74AHC540PW-P compare to SN74ABT540 for high-speed bus driving applications?
SN74AHC540PW-P uses AHC CMOS technology with a supply range of 2 V to 5.5 V and ±8 mA drive, suitable for moderate-speed bus tasks. SN74ABT540 is an ABT-family device with higher drive current (±32 mA) and lower output impedance, better suited for heavily loaded backplane buses operating at 5 V.
Is SN74AHC540PW-P RoHS compliant, and what is its operating temperature range for industrial designs?
Yes, SN74AHC540PW-P is RoHS compliant and lead-free. It is rated for an operating temperature range of -40°C to 85°C, qualifying it for industrial-grade applications such as factory automation, test equipment, and rugged embedded controller boards.
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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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