CD74AC540M Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The CD74AC540M is an octal inverting bus driver IC from Texas Instruments in a 20-pin SOIC package. It features dual active-low output enable controls, 24 mA output drive current, 50 pF load capacitance, and AC-family CMOS logic for high-speed bus driving. Available from stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 20
- Lifecycle
- OBSOLETE
- Datasheet
- CD74AC540M Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.5842(MOQ 1)
- Temp Range
- -55.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of CD74AC540M?
- Octal inverting bus driver with dual active-low output enable for flexible bus control
- High output drive current of 24 mA per channel for driving heavily loaded data buses
- AC-family CMOS logic in 20-pin SOIC package with 50 pF load capacitance for high-speed operation
What is CD74AC540M used for?
The CD74AC540M is designed for driving high-capacitance buses in microprocessor and digital system designs where multiple devices share a common data or address bus. It is commonly used in memory interface circuits, bus isolation, and signal buffering in industrial control systems and embedded computing. The dual output enable feature allows two independent control signals to gate the bus outputs, simplifying system arbitration logic.
What are the specifications of CD74AC540M?
| YTEOL | 0 |
| Additional Feature | WITH DUAL OUTPUT ENABLE |
| Control Type | ENABLE LOW |
| Count Direction | UNIDIRECTIONAL |
| Family | AC |
| 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 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) | 0.16mA |
| Prop. Delay@Nom-Sup | 9.5ns |
| Propagation Delay (tpd) | 77ns |
| Qualification Status | Not Qualified |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 1.5V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | MILITARY |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| 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 | 8542.39.00.60 |
| Country of Origin | Malaysia |
Where can I find the CD74AC540M datasheet?
CD74AC540M Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for CD74AC540M?
Compatible alternatives and drop-in replacements for CD74AC540M:
Frequently Asked Questions
What is the CD74AC540M and how does it differ from a non-inverting buffer?
The CD74AC540M is an octal inverting bus driver, meaning each of its 8 output channels inverts the logic state of the corresponding input. Unlike non-inverting buffers such as the CD74AC541, the CD74AC540M outputs a LOW when the input is HIGH and vice versa. It features 24 mA output drive current and dual active-low output enable controls.
What are the output enable pins on the CD74AC540M and how do they work?
The CD74AC540M has two active-low output enable pins (OE1 and OE2). Both must be driven LOW simultaneously to enable the outputs. If either enable pin is HIGH, all 8 outputs are placed in a high-impedance state, allowing multiple devices to share the same bus without contention.
What package does the CD74AC540M use?
The CD74AC540M comes in a 20-pin Small Outline Integrated Circuit (SOIC) package, identified by JESD-30 code R-PDSO-G20. This surface-mount package supports standard reflow soldering and is compatible with automated PCB assembly, offering a smaller footprint than equivalent through-hole DIP packages.
What is the load capacitance specification for the CD74AC540M?
The CD74AC540M is characterized with a 50 pF load capacitance per output. This specification is used during timing measurements and represents the typical bus loading encountered in real digital systems. Exceeding this capacitance will increase propagation delay and reduce maximum operating frequency.
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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+ | $1.0800 | $1.08 |
| 10+ | $0.8670 | $8.67 |
| 100+ | $0.8100 | $81.00 |
| 1000+ | $0.7000 | $700.00 |
| 10000+ | $0.6973 | $6973.00 |
| 100000+ | $0.5842 | $58420.00 |
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