74HC240 Octal Buffer Line Driver IC is a high-speed CMOS logic device designed to provide reliable signal buffering, isolation, and line driving in digital electronic systems. Featuring eight non-inverting buffer/line drivers with tri-state outputs, the 74HC240 is widely used in microcontroller-based circuits, data buses, memory interfaces, and industrial control applications. Its ability to control data flow efficiently makes it an essential component for modern digital designs.
Built using High-Speed CMOS (HC) technology, the 74HC240 delivers excellent performance with low power consumption, fast switching speeds, and high noise immunity. It is fully compatible with TTL logic levels, allowing seamless integration into mixed-logic environments. With dual active-low output enable pins, designers can selectively control groups of outputs, making this IC ideal for bus-oriented architectures.
Key Features of 74HC240 Octal Buffer IC
-
Eight non-inverting buffer/line drivers
-
Tri-state outputs for bus isolation and sharing
-
High-speed CMOS technology for fast switching
-
Low power dissipation compared to standard TTL ICs
-
Dual output enable control (OE1, OE2) for flexible operation
-
TTL-compatible input levels
-
Improved noise immunity and signal integrity
-
Wide operating voltage range (2V to 6V)
-
Available in DIP, SOIC, and TSSOP packages
-
ESD protection for improved reliability
The tri-state capability allows multiple devices to share a common data bus without interference, while the dual enable inputs provide grouped output control for enhanced design flexibility.
Specifications – 74HC240 Line Driver IC
| Parameter | Specification |
|---|---|
| Logic Type | Octal Buffer / Line Driver |
| Output Type | 3-State (Tri-State) |
| Number of Channels | 8 |
| Logic Family | High-Speed CMOS (HC) |
| Supply Voltage (Vcc) | 2V to 6V |
| Typical Operating Voltage | 5V |
| Input Logic Level | TTL Compatible |
| Output Drive Capability | ±7.8 mA (typical) |
| Propagation Delay | ~8 ns (typical at 5V) |
| Operating Temperature Range | -40°C to +85°C |
| Package Options | DIP-20, SOIC-20, TSSOP-20 |
| Pin Count | 20 Pins |
These specifications make the 74HC240 suitable for both low-voltage and standard 5V logic systems, ensuring consistent performance across a wide range of applications.
Applications of 74HC240 Octal Buffer Line Driver
The 74HC240 IC is widely used in applications where signal buffering, bus driving, or data isolation is required. Common applications include:
-
Microcontroller and Microprocessor Systems
Used to buffer address, data, and control buses, protecting sensitive processor pins from heavy loads. -
Memory Interface Circuits
Ideal for driving SRAM, EEPROM, and ROM address/data lines. -
Digital Communication Systems
Enhances signal strength and integrity in parallel data transmission. -
Industrial Control Systems
Provides reliable signal conditioning in noisy environments. -
Embedded Systems
Ensures stable logic levels between peripherals and processing units. -
Data Bus Management
Allows multiple devices to share a common bus without contention. -
FPGA and CPLD Interfacing
Used to isolate and buffer I/O lines for safe operation. -
Educational and Prototyping Projects
Commonly used in logic trainers, development boards, and lab experiments.
Why Choose the 74HC240 Buffer IC?
The 74HC240 Octal Buffer Line Driver IC stands out due to its high-speed operation, low power consumption, and tri-state functionality. Its compatibility with both CMOS and TTL logic families makes it highly versatile, while the dual output enable feature offers superior control in complex digital systems. Whether you are designing an embedded product, industrial controller, or academic project, this IC ensures robust signal performance and system reliability.
Package Includes:
1 x 74HC240 Octal Buffer Line Driver IC (DIP-20 Package)
FAQ
1. Where can we buy this 74HC240 Octal Buffer Line Driver IC?
This product is available online https://aiiottech.in/product/74hc240-octal-buffer-line-driver-ic/ and also available at our store in Pudupakkam/Kelambakkam, Chennai-603103
2. When can I get this 74HC240 Octal Buffer Line Driver IC after placing the order?
RGRJ AIIoT TECHNOLOGIES will immediately ship and deliver the product within 1-3 working days.
Video Link: Octal Buffer/Line Driver with 3-State Outputs




Reviews
Clear filtersThere are no reviews yet.