SN74ALS540NSR Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
SN74ALS540NSR is an octal bus driver/buffer IC with 3-state outputs from Texas Instruments, part of the ALS logic family with dual output enable and unidirectional data flow. Key specs: 8-bit bus driving, active-low enable control, 50 pF load capacitance in 20-pin SOIC package. Available in stock worldwide with fast shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 20
- Lifecycle
- ACTIVE
- Datasheet
- SN74ALS540NSR Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $3.3372(MOQ 1)
- Temp Range
- ?°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of SN74ALS540NSR?
- Octal 3-state bus driver with dual active-low output enable for flexible bus control and isolation
- ALS (Advanced Low-power Schottky) logic family delivering high speed with reduced power consumption
- 20-pin SOIC (R-PDSO-G20) surface-mount package for compact, automated PCB assembly in commercial applications
What is SN74ALS540NSR used for?
The SN74ALS540NSR is ideal for driving data buses in microprocessor systems, memory interfaces, and backplane bus architectures where 8-bit unidirectional buffering with 3-state control is required. It is commonly used in industrial controllers, communication cards, and embedded computing modules to isolate and drive address or data bus lines. The device also suits VME bus, ISA bus, and other parallel bus designs needing reliable high-current 3-state buffer stages.
What are the specifications of SN74ALS540NSR?
| Pbfree Code | Yes |
| YTEOL | 15 |
| Additional Feature | WITH DUAL OUTPUT ENABLE |
| Control Type | ENABLE LOW |
| Count Direction | UNIDIRECTIONAL |
| Family | ALS |
| JESD-30 Code | R-PDSO-G20 |
| JESD-609 Code | e4 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | BUS DRIVER |
| Max I(ol) | 0.024A |
| Number of Bits | 8 |
| Number of Functions | 8 |
| Number of Ports | 2 |
| Output Characteristics | 3-STATE |
| Output Polarity | INVERTED |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP20,.3 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Packing Method | TR, 13 INCH |
| Peak Reflow Temperature (Cel) | 260 |
| Power Supply Current-Max (ICC) | 25mA |
| Prop. Delay@Nom-Sup | 12ns |
| Propagation Delay (tpd) | 12ns |
| Qualification Status | Not Qualified |
| Screening Level | MIL-PRF-38535 |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 4.5V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | YES |
| Technology | TTL |
| Temperature Grade | COMMERCIAL |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
| Country of Origin | Malaysia |
Where can I find the SN74ALS540NSR datasheet?
SN74ALS540NSR Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for SN74ALS540NSR?
Compatible alternatives and drop-in replacements for SN74ALS540NSR:
Frequently Asked Questions
How many buffer channels does the SN74ALS540NSR provide?
The SN74ALS540NSR provides 8 independent buffer channels (octal) with 3-state outputs, suitable for driving full 8-bit data or address bus lines in microprocessor and embedded system designs.
What does the dual output enable feature of the SN74ALS540NSR provide?
The dual active-low output enable allows the 3-state outputs to be controlled by two separate enable signals, providing flexible bus sharing and isolation capability for multi-master or multi-source bus architectures.
What logic family does the SN74ALS540NSR belong to?
It belongs to the ALS (Advanced Low-power Schottky TTL) logic family, which offers faster switching speeds than standard LS TTL while consuming less power, making it suitable for high-performance digital bus applications.
What package is the SN74ALS540NSR available in?
The SN74ALS540NSR is housed in a 20-pin SOIC (Small Outline IC, JESD-30 code R-PDSO-G20) surface-mount package, enabling compact PCB designs and compatibility with automated pick-and-place assembly processes.
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Why Buy from FindMyChip
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.
More from Texas Instruments
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $3.5000 | $3.50 |
| 2000+ | $3.3372 | $6674.36 |
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