SN74BCT540ADWIn StockTexas Instruments
SN74BCT540ADW is an octal buffer/driver with 3-state outputs and dual active-low output enable. Features 50pF load capacitance, BCT logic family, and unidirectional bus driving. From $1.25, in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Other
- Pin Count
- 20
- Lifecycle
- ACTIVE
- Datasheet
- SN74BCT540ADW Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $1.2500(MOQ 1)
- Temp Range
- ?°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Octal 3-state buffers/drivers with dual active-low output enable for flexible bus control
- BCT logic family offering high-speed performance with TTL-compatible inputs and CMOS-compatible outputs
- 50pF load capacitance support for driving heavy bus loads in backplane and memory applications
- 20-pin SOIC (R-PDSO-G20) package with Pb-free (e4) qualification for RoHS compliance
Applications
The SN74BCT540ADW is well-suited for bus interface and memory address/data buffering applications in desktop and server systems. Its unidirectional octal driver structure makes it ideal for isolating and driving high-capacitance backplane buses in industrial control and telecom equipment. The dual output-enable inputs allow straightforward multiplexing of multiple data sources onto a shared bus.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Additional Feature | WITH DUAL OUTPUT ENABLE |
| Control Type | ENABLE LOW |
| Count Direction | UNIDIRECTIONAL |
| Family | BCT/FBT |
| JESD-30 Code | R-PDSO-G20 |
| JESD-609 Code | e4 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | BUS DRIVER |
| Max I(ol) | 0.064A |
| 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,.4 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Packing Method | TUBE |
| Peak Reflow Temperature (Cel) | 260 |
| Power Supply Current-Max (ICC) | 21mA |
| Prop. Delay@Nom-Sup | 6.9ns |
| Propagation Delay (tpd) | 6.9ns |
| Qualification Status | Not Qualified |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 4.5V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | YES |
| Technology | BICMOS |
| 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 | Other |
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 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What logic family does the SN74BCT540ADW belong to, and what are its key electrical characteristics?
The SN74BCT540ADW belongs to the BCT (Bipolar CMOS Technology) logic family. It features TTL-compatible inputs, 3-state outputs, a 50pF load capacitance rating, and operates with an active-low dual output enable (OE) scheme, making it suitable for high-speed bus driving applications.
What package does the SN74BCT540ADW come in, and is it RoHS compliant?
The SN74BCT540ADW comes in a 20-pin wide SOIC package (JESD-30 code R-PDSO-G20). It carries a Pb-free code of 'Yes' and JESD-609 code e4, confirming it is RoHS compliant and suitable for use in environmentally regulated designs.
What are typical applications for the SN74BCT540ADW?
Typical applications include memory address and data bus buffering, backplane bus driving in servers and workstations, bidirectional bus isolation in industrial control systems, and general-purpose octal line driving where 3-state control and dual output enable are required.
What is the difference between the SN74BCT540ADW and other BCT540 variants?
The 'DW' suffix denotes the wide 20-pin SOIC package, whereas other suffixes (e.g., DW, N, PW) indicate different package styles such as PDIP or TSSOP. The core logic function — octal 3-state non-inverting buffer with dual active-low output enable — remains the same across variants.
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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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| 1+ | $1.9200 | $1.92 |
| 100+ | $1.4400 | $144.00 |
| 1000+ | $1.2500 | $1250.00 |
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