Overview
The 74LCX245MTR is a Low Voltage Bidirectional Transceiver with 5V Tolerant Inputs and Outputs, produced by STMicroelectronics. Although this component is currently obsolete and no longer in production, it remains relevant for reference and legacy system maintenance. The device contains eight non-inverting bidirectional buffers with TRI-STATE outputs, making it suitable for bus-oriented applications. It is designed for low voltage (2.3V to 3.6V) VCC applications and can interface with a 5V signal environment, enhancing its versatility in mixed-voltage systems.
Key Specifications
| Parameter | Min. | Max. | Units |
|---|---|---|---|
| Supply Voltage (VCC) | 2.0 | 3.6 | V |
| Input Voltage (VI) | 0 | 5.5 | V |
| Output Voltage (VO) | 0 | 5.5 | V |
| Output Current (IO) at VCC = 3.0V - 3.6V | ±24 | mA | |
| Output Current (IO) at VCC = 2.7V - 3.0V | ±12 | mA | |
| Output Current (IO) at VCC = 2.3V - 2.7V | ±8 | mA | |
| Free-Air Operating Temperature (TA) | -40 | 85 | °C |
| Propagation Delay (tPD) at VCC = 3.3V | 7.0 | ns | |
| Input Capacitance (CIN) | 7.0 | pF | |
| Output Capacitance (COUT) | 8.0 | pF |
Key Features
- 5V tolerant inputs and outputs, allowing for compatibility with both 3.3V and 5V systems.
- Low voltage operation: 2.3V to 3.6V VCC supply range.
- High speed operation with a maximum propagation delay of 7.0ns at VCC = 3.3V.
- Low power consumption: maximum supply current (ICC) of 10µA.
- Power down high impedance inputs and outputs.
- Supports live insertion/withdrawal.
- ±24mA output drive capability at VCC = 3.0V.
- Latch-up performance exceeds 500mA.
- ESD performance: Human Body Model > 2000V, Machine Model > 200V.
- Leadless DQFN package option available.
Applications
The 74LCX245MTR is designed for bus-oriented applications, particularly in systems that require low voltage operation and the ability to interface with 5V signal environments. It is suitable for use in a variety of electronic systems, including:
- Computer peripherals and interfaces.
- Telecommunication equipment.
- Industrial control systems.
- Mixed-voltage system designs.
Q & A
- What is the primary function of the 74LCX245MTR?
The 74LCX245MTR is a low voltage bidirectional transceiver with 5V tolerant inputs and outputs, designed for bus-oriented applications.
- What is the operating voltage range for the 74LCX245MTR?
The operating voltage range is 2.3V to 3.6V.
- What is the maximum propagation delay of the 74LCX245MTR at VCC = 3.3V?
The maximum propagation delay is 7.0ns.
- Does the 74LCX245MTR support live insertion and withdrawal?
Yes, it supports live insertion and withdrawal.
- What is the output drive capability of the 74LCX245MTR at VCC = 3.0V?
The output drive capability is ±24mA.
- What is the ESD performance of the 74LCX245MTR?
The ESD performance exceeds 2000V for the Human Body Model and 200V for the Machine Model.
- Is the 74LCX245MTR still in production?
No, the 74LCX245MTR is obsolete and no longer manufactured.
- What package types are available for the 74LCX245MTR?
It is available in various packages, including a leadless DQFN package.
- What are the key applications for the 74LCX245MTR?
It is suitable for computer peripherals, telecommunication equipment, industrial control systems, and mixed-voltage system designs.
- How does the 74LCX245MTR handle power down conditions?
The device enters a high impedance state for both inputs and outputs during power down.
