Overview
The 74HCT125DB118 is a quadruple 3-state buffer integrated circuit produced by NXP USA Inc. This component is part of the 74HCT series, which is known for its compatibility with TTL (Transistor-Transistor Logic) voltage levels and its wide supply voltage range. The 74HCT125 is designed to provide four independent buffer gates, each with a separate enable pin that allows the output to be placed in a high impedance state when driven with a high logic level.
Key Specifications
| Parameter | Description | Value |
|---|---|---|
| Supply Voltage Range | 4.5V to 5.5V | 4.5V to 5.5V |
| Input Compatibility | TTL Voltage Level Compatible | TTL |
| Output Current | Sinks or Sources | 4mA at VCC = 4.5V |
| Power Consumption | CMOS Low Power Consumption | - |
| ESD Protection | Human Body Model, Charged Device Model | 2000-V HBM, 1000-V CDM |
| Package Options | SO-14, TSSOP-14 | SO-14, TSSOP-14 |
| Propagation Delay | At VCC = 4.5V, CL = 50pF | 15 ns (min), 25 ns (typ), 31 ns (max) |
| Enable Time | OEN to YN | 15 ns (min), 28 ns (typ), 35 ns (max) |
| Disable Time | OEN to YN | 15 ns (min), 25 ns (typ), 31 ns (max) |
Key Features
- Wide Supply Voltage Range: Operates from 4.5V to 5.5V, making it versatile for various applications.
- TTL Compatibility: Inputs are TTL voltage level compatible, ensuring seamless integration with TTL-based systems.
- Low Power Consumption: Designed with CMOS technology for low power consumption.
- ESD Protection: Exceeds JESD 22 standards for Human Body Model and Charged Device Model, providing robust protection against electrostatic discharge.
- High Impedance State: Each buffer has a separate enable pin that can place the output in a high impedance state when driven with a high logic level.
- Multiple Package Options: Available in SO-14 and TSSOP-14 packages, offering flexibility in design and layout.
Applications
The 74HCT125DB118 is suitable for a variety of applications where buffer logic is required, including:
- Digital Logic Circuits: Used in digital logic circuits to buffer and isolate signals.
- Interface Circuits: Ideal for interfacing between different logic families or voltage levels.
- Industrial Control Systems: Can be used in industrial control systems to handle signal buffering and isolation.
- Automotive Electronics: Suitable for automotive applications due to its robust ESD protection and wide operating voltage range.
Q & A
- What is the supply voltage range of the 74HCT125DB118?
The supply voltage range is from 4.5V to 5.5V. - Is the 74HCT125DB118 compatible with TTL voltage levels?
Yes, the inputs are TTL voltage level compatible. - What is the maximum output current of the 74HCT125DB118 at VCC = 4.5V?
The maximum output current is 4mA. - Does the 74HCT125DB118 have ESD protection?
Yes, it exceeds JESD 22 standards for Human Body Model and Charged Device Model. - In what packages is the 74HCT125DB118 available?
It is available in SO-14 and TSSOP-14 packages. - What is the propagation delay of the 74HCT125DB118 at VCC = 4.5V and CL = 50pF?
The propagation delay is 15 ns (min), 25 ns (typ), and 31 ns (max). - Can the outputs of the 74HCT125DB118 be placed in a high impedance state?
Yes, each buffer has a separate enable pin that can place the output in a high impedance state when driven with a high logic level. - What are some common applications of the 74HCT125DB118?
Common applications include digital logic circuits, interface circuits, industrial control systems, and automotive electronics. - Is the 74HCT125DB118 suitable for use in industrial environments?
Yes, due to its robust ESD protection and wide operating voltage range. - Where can I find more detailed specifications for the 74HCT125DB118?
You can find detailed specifications on the official NXP website or through distributors like Digi-Key, Mouser, and Avnet.
