Overview
The 74HCT240PW,112 is an octal buffer/line driver integrated circuit produced by Nexperia (formerly part of NXP Semiconductors). This device is part of the 74HCT series and features 3-state outputs, making it versatile for various digital logic applications. It can be used as two 4-bit buffers or one 8-bit buffer, with each buffer having inverting outputs. The device includes two output enable inputs (1OE and 2OE), each controlling four of the 3-state outputs, allowing for flexible control over the output states.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| VCC (Supply Voltage) | - | 4.5 | - | 5.5 | V |
| VIH (HIGH-level input voltage) | VCC = 4.5 V to 5.5 V | 2.0 | 1.6 | 2.0 | V |
| VIL (LOW-level input voltage) | VCC = 4.5 V to 5.5 V | - | 1.2 | 0.8 | V |
| VOH (HIGH-level output voltage) | IO = -6 mA | 3.98 | 4.32 | 3.7 | V |
| VOL (LOW-level output voltage) | IO = 6.0 mA | - | 0.16 | 0.4 | V |
| ICC (Supply Current) | VI = VCC or GND; IO = 0 A; VCC = 4.5 V | - | - | 80 | μA |
| tpd (Propagation Delay) | VCC = 4.5 V | - | 11 | 20 | ns |
| ten (Enable Time) | nOE to nYn; VCC = 4.5 V | - | 13 | 30 | ns |
| tdis (Disable Time) | nOE to nYn; VCC = 4.5 V | - | 13 | 25 | ns |
| Operating Temperature | - | -40 | - | 125 | °C |
| Package | - | - | - | 20-TSSOP (0.173", 4.40mm Width) | - |
Key Features
- Wide Supply Voltage Range: Operates from 4.5 V to 5.5 V, with compatibility to JEDEC standards JESD8C and JESD7A.
- CMOS Low Power Dissipation: Low power consumption, making it suitable for power-sensitive applications.
- High Noise Immunity: Ensures reliable operation in noisy environments.
- 3-State Outputs: Each output can be set to a high-impedance state, controlled by two output enable inputs (1OE and 2OE).
- Inverting Outputs: The device provides inverting buffers, useful for signal inversion in digital circuits).
- Latch-Up Performance: Exceeds 100 mA per JESD 78 Class II Level B, ensuring robust operation against latch-up conditions).
Applications
The 74HCT240PW,112 is suitable for a variety of digital logic applications, including:
- Buffering and Line Driving: Ideal for driving long lines or buffering digital signals in complex digital systems).
- Signal Inversion: Useful in applications where signal inversion is required, such as in digital logic circuits and data transmission systems).
- Interface Circuits: Can be used to interface between different logic families or voltage levels, thanks to its wide supply voltage range and 3-state outputs).
Q & A
- What is the primary function of the 74HCT240PW,112?
The primary function is to act as an octal buffer/line driver with 3-state outputs, providing inverting outputs and flexible control over output states).
- What is the supply voltage range for the 74HCT240PW,112?
The device operates from 4.5 V to 5.5 V).
- What type of outputs does the 74HCT240PW,112 have?
The device has 3-state outputs, which can be set to a high-impedance state).
- How many output enable inputs does the 74HCT240PW,112 have?
The device has two output enable inputs (1OE and 2OE), each controlling four of the 3-state outputs).
- What is the propagation delay of the 74HCT240PW,112?
The propagation delay is typically 11 ns to 20 ns at VCC = 4.5 V).
- What is the operating temperature range for the 74HCT240PW,112?
The device operates from -40°C to 125°C).
- What package type is the 74HCT240PW,112 available in?
The device is available in a 20-TSSOP package).
- Is the 74HCT240PW,112 still in production?
No, this product is no longer manufactured, but substitutes or alternative package types may be available).
- What are some common applications for the 74HCT240PW,112?
Common applications include buffering and line driving, signal inversion, and interface circuits).
- Does the 74HCT240PW,112 have any special features for noise immunity?
Yes, it has high noise immunity, ensuring reliable operation in noisy environments).
