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| Product attributes | Property Value |
| Manufacturer | Harris Corporation |
| Product Series | 74ACT |
| Packaging | Bulk | |
| Part Status | Active |
| Logic Type | Buffer, Inverting |
| Number of Elements | 2 |
| Number of Bits per Element | 8 |
| Input Type | - |
| Output Type | 3-State |
| Current - Output High, Low | 75mA, 75mA |
| Voltage - Supply | 4.5V ~ 5.5V |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Grade | - |
| Qualification | - |
| Mounting Type | Surface Mount |
| Package / Case | 20-SOIC (0.295", 7.50mm Width) |
| Supplier Device Package | 20-SOIC |
The CD74ACT240EX128 is a dual-channel inverting buffer from Harris Corporation, part of the 74ACT logic family. It operates from a 4.5V to 5.5V supply and features 3-State outputs with a robust 75mA source and sink capability. This makes it an excellent choice for high-drive bus interfacing, memory driving, and signal conditioning in 5V systems. Its TTL-compatible inputs ensure easy integration with legacy logic.
- High Drive Current (75mA): Can drive low-impedance or high-capacitance loads effectively.
- Dual Channels: Provides two buffers in a single package, reducing component count.
- TTL-Compatible Inputs: Simplifies interfacing with 5V TTL logic.
- 3-State Outputs: Enables bus sharing and system isolation.
High-Drive Bus Buffering
Use the CD74ACT240EX128 to buffer data and address buses in 5V systems. Its 75mA source/sink capability can drive large bus capacitance and multiple loads.
Dual Signal Inversion
This device provides two inverting buffers in one package, saving board space when multiple signals need inversion.
Memory and Peripheral Driving
Drive memory arrays or peripheral interfaces that require high current. The 3-State outputs allow for easy bus sharing.
Level Shifting (5V to 5V TTL)
With TTL-compatible inputs, it can interface with older TTL logic while providing CMOS-level outputs, ensuring robust signal integrity.
Backplane and Card Edge Interfacing
In rack-mounted systems, this buffer can drive signals across a backplane, overcoming transmission line effects with its high drive strength.
Automotive ECU Signal Conditioning
In 5V automotive control units, it can buffer and invert sensor or control signals, providing the necessary drive for actuators or other ICs.
- Q: What is the logic family of the CD74ACT240EX128?
- A: It belongs to the 74ACT logic family, which combines advanced CMOS with TTL-compatible inputs.
- Q: What is the function of this IC?
- A: It is a dual-channel inverting buffer, providing two independent signal inversion paths.
- Q: What type of output does it have?
- A: It features 3-State outputs for bus-oriented applications.
- Q: What is the operating voltage range?
- A: The supply voltage range is 4.5V to 5.5V, compatible with standard 5V systems.
- Q: What is the output current capability?
- A: It can both source and sink 75mA, offering strong drive capability.
- Q: What package is available?
- A: It is available in a 20-SOIC (7.50mm width) package.
CD74ACT240EX128.pdf
- Q: What is the logic family of the CD74ACT240EX128?
- A: It belongs to the 74ACT logic family, which combines advanced CMOS with TTL-compatible inputs.
- Q: What is the function of this IC?
- A: It is a dual-channel inverting buffer, providing two independent signal inversion paths.
- Q: What type of output does it have?
- A: It features 3-State outputs for bus-oriented applications.
- Q: What is the operating voltage range?
- A: The supply voltage range is 4.5V to 5.5V, compatible with standard 5V systems.
- Q: What is the output current capability?
- A: It can both source and sink 75mA, offering strong drive capability.
- Q: What package is available?
- A: It is available in a 20-SOIC (7.50mm width) package.