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| Product attributes | Property Value |
| Manufacturer | Texas Instruments |
| Product Series | 74ACT |
| Packaging | Bulk | |
| Part Status | Active |
| Logic Type | Buffer, Inverting |
| Number of Elements | 2 |
| Number of Bits per Element | 4 |
| Input Type | - |
| Output Type | 3-State |
| Current - Output High, Low | 24mA, 24mA |
| Voltage - Supply | 4.5V ~ 5.5V |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Grade | - |
| Qualification | - |
| Mounting Type | Surface Mount |
| Package / Case | 20-TSSOP (0.173", 4.40mm Width) |
| Supplier Device Package | 20-TSSOP |
The SN74ACT240PWLE is an octal inverting buffer/line driver from Texas Instruments, part of the 74ACT logic family. It operates from 4.5V to 5.5V, delivering 24mA output current per channel. The device features two groups of four inverting buffers with independent enable pins and 3-State outputs. Housed in a compact 20-pin TSSOP package, it is ideal for 5V TTL systems requiring high drive strength, such as microprocessor bus buffering, memory decoding, and industrial control. Its small footprint is perfect for space-constrained PCBs.
- Compact TSSOP-20 Package: Saves PCB space compared to SOIC alternatives.
- TTL-Compatible Inputs: Simplifies interfacing with 5V logic.
- High 24mA Output Drive: Ensures reliable operation in high-load conditions.
- 3-State Outputs: Enables bus sharing in multi-device systems.
- Inverting Function: Reduces need for external inverters.
5V Microprocessor Bus Buffering
Buffer address/data lines between a 5V CPU and memory. The 24mA drive ensures signal integrity across the bus.
Inverting Line Drivers for Communication
Use in RS-232 or CAN transceiver interfaces where inverted signals are needed. The 3-State outputs allow multiple nodes.
Industrial Control Systems
Drive control signals in factory automation. The TTL-compatible inputs interface directly with 5V PLCs.
Memory Bank Selection
Generate active-low chip select signals using the inverting buffers. The high drive current can enable multiple memory chips.
Backplane Data Transmission
Drive data across a backplane in telecom equipment. The TSSOP package saves board space in dense designs.
Test and Measurement
Buffer and invert trigger signals in oscilloscopes. The fast propagation delay of 74ACT logic preserves timing accuracy.
- Q: What logic family does the SN74ACT240PWLE belong to?
- A: It is part of the 74ACT family, offering TTL-compatible inputs and high-speed CMOS performance.
- Q: What is the function of this IC?
- A: It is an octal inverting buffer/line driver, ideal for 5V bus applications.
- Q: How many channels are there?
- A: It has 8 channels (2 groups of 4), each with independent enable inputs.
- Q: What is the output type?
- A: 3-State outputs allow connection to shared buses.
- Q: What is the voltage range?
- A: It operates from 4.5V to 5.5V, optimized for 5V systems.
- Q: What package is it in?
- A: It comes in a 20-pin TSSOP package (4.40mm width).
SN74ACT240PWLE.pdf
- Q: What logic family does the SN74ACT240PWLE belong to?
- A: It is part of the 74ACT family, offering TTL-compatible inputs and high-speed CMOS performance.
- Q: What is the function of this IC?
- A: It is an octal inverting buffer/line driver, ideal for 5V bus applications.
- Q: How many channels are there?
- A: It has 8 channels (2 groups of 4), each with independent enable inputs.
- Q: What is the output type?
- A: 3-State outputs allow connection to shared buses.
- Q: What is the voltage range?
- A: It operates from 4.5V to 5.5V, optimized for 5V systems.
- Q: What package is it in?
- A: It comes in a 20-pin TSSOP package (4.40mm width).