Overview
The 74HCT240D,652 is an octal buffer/line driver produced by NXP Semiconductors. This integrated circuit is part of the 74HCT series, which is known for its high-speed CMOS technology. The device features inverting 3-state outputs, making it suitable for a variety of digital logic applications. It is designed to operate with a wide range of input voltage levels, including TTL, NMOS, and CMOS, and is particularly useful in systems requiring high-speed data transfer and low power consumption.
Key Specifications
| Product Attribute | Attribute Value |
|---|---|
| Manufacturer | NXP Semiconductors |
| Voltage - Supply | 4.5V ~ 5.5V |
| Supplier Device Package | 20-SO |
| Series | 74HCT |
| Package / Case | 20-SOIC (0.295", 7.50mm Width) |
| Package | Bulk |
| Output Type | 3-State |
| Operating Temperature | -40°C ~ 125°C (TA) |
| Number of Elements | 2 |
| Number of Bits per Element | 4 |
| Mounting Type | Surface Mount |
| Logic Type | Buffer, Inverting |
| Current - Output High, Low | 6mA, 6mA |
| Base Product Number | 74HCT240 |
| RoHs Status | Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| REACH Status | REACH Unaffected |
Key Features
- High-Speed Operation: The 74HCT240D achieves high-speed operation similar to equivalent LSTTL while maintaining the low power dissipation of CMOS technology, with a propagation delay of 13 ns (typ.) at VCC = 5.5 V.
- Wide Operating Temperature Range: The device operates over a temperature range of -40°C to 125°C, making it suitable for various environmental conditions.
- Low Power Dissipation: The device has a low quiescent supply current of 4.0 µA (max) at Ta = 25°C, contributing to energy efficiency.
- Compatibility with TTL Outputs: The inputs are compatible with TTL, NMOS, and CMOS output voltage levels, enhancing its interfacing capabilities.
- 3-State Outputs: The device features two active-low output enables, allowing for high impedance state, which is useful in bus-oriented systems.
- Static Discharge Protection: All inputs are equipped with protection circuits against static discharge or transient excess voltage.
Applications
The 74HCT240D is designed for use in various digital logic applications, including:
- Memory Address Drivers: Its 3-state outputs make it suitable for driving memory address lines.
- Bus-Oriented Systems: The high impedance state of the outputs is beneficial in bus-oriented systems where multiple devices need to share the same bus.
- High-Speed Data Transfer: The device's high-speed operation and low power consumption make it ideal for applications requiring fast data transfer and energy efficiency.
Q & A
- What is the supply voltage range for the 74HCT240D?
The supply voltage range is 4.5V to 5.5V.
- What is the operating temperature range of the 74HCT240D?
The operating temperature range is -40°C to 125°C.
- What type of logic does the 74HCT240D perform?
The 74HCT240D is an inverting buffer with 3-state outputs.
- What is the propagation delay of the 74HCT240D?
The propagation delay is typically 13 ns at VCC = 5.5 V.
- Is the 74HCT240D compatible with TTL outputs?
Yes, the inputs are compatible with TTL, NMOS, and CMOS output voltage levels.
- What is the package type of the 74HCT240D?
The package type is 20-SOIC (0.295", 7.50mm Width).
- Does the 74HCT240D have protection against static discharge?
Yes, all inputs are equipped with protection circuits against static discharge or transient excess voltage.
- What are the typical applications of the 74HCT240D?
Typical applications include memory address drivers, bus-oriented systems, and high-speed data transfer applications.
- What is the maximum output current of the 74HCT240D?
The maximum output current is 6 mA for both high and low states.
- Is the 74HCT240D RoHS compliant?
Yes, the 74HCT240D is RoHS compliant.
