Overview
The 74AHCT245D,112 is an 8-bit bus transceiver with 3-state outputs, produced by NXP Semiconductors (now part of Nexperia). This device is designed to facilitate bidirectional data transmission between two buses. It features an output enable (OE) and a direction control (DIR) pin, allowing for flexible control over data flow. The 74AHCT245D,112 is particularly useful in mixed voltage environments due to its overvoltage tolerant inputs and TTL-compatible logic levels.
Key Specifications
| Parameter | Value | Description |
|---|---|---|
| Type Number | 74AHCT245D,112 | Orderable part number |
| VCC (V) | 2.0 to 5.5 | Supply voltage range |
| Logic Switching Levels | TTL | Logic level compatibility |
| Output Drive Capability (mA) | ± 8 | Output current capability |
| tpd (ns) | 5.0 | Propagation delay |
| Number of Bits | 8 | Number of data bits |
| fmax (MHz) | 60 | Maximum clock frequency |
| Power Dissipation | Low | Power consumption characteristics |
| Tamb (°C) | -40 to +125 | Operating temperature range |
| Package | SO20 (SOT163-1) | Package type |
Key Features
- Output Enable and Direction Control: Features an output enable (OE) and send/receive (DIR) pin for controlling data flow direction.
- Overvoltage Tolerant Inputs: Inputs are tolerant up to 5.5 V, making it suitable for mixed voltage environments.
- Wide Supply Voltage Range: Operates from 2.0 V to 5.5 V.
- High Noise Immunity: All inputs have Schmitt-trigger action for improved noise immunity.
- Low Power Dissipation: CMOS low power dissipation characteristics.
- ESD Protection: Human Body Model (HBM) exceeds 2000 V and Charged Device Model (CDM) exceeds 1000 V.
Applications
- Data Transmission Systems: Ideal for bidirectional data transmission between two buses in various digital systems.
- Mixed Voltage Environments: Suitable for use in mixed voltage systems due to its overvoltage tolerant inputs.
- Embedded Systems: Used in embedded systems requiring low power consumption and high reliability.
- Industrial Automation: Applied in industrial automation for reliable and efficient data communication.
Q & A
- What is the primary function of the 74AHCT245D,112?
The primary function is to act as an 8-bit bus transceiver with 3-state outputs, enabling bidirectional data transmission between two buses.
- What are the logic switching levels of the 74AHCT245D,112?
The device is TTL-compatible.
- What is the supply voltage range of the 74AHCT245D,112?
The device operates from 2.0 V to 5.5 V.
- What is the propagation delay of the 74AHCT245D,112?
The propagation delay is approximately 5.0 ns.
- Is the 74AHCT245D,112 suitable for mixed voltage environments?
Yes, it is suitable due to its overvoltage tolerant inputs up to 5.5 V.
- What is the maximum clock frequency of the 74AHCT245D,112?
The maximum clock frequency is 60 MHz.
- What type of package does the 74AHCT245D,112 come in?
The device comes in an SO20 (SOT163-1) package.
- What are the operating temperature ranges for the 74AHCT245D,112?
The operating temperature range is from -40°C to +125°C.
- Does the 74AHCT245D,112 have ESD protection?
Yes, it has ESD protection exceeding 2000 V for HBM and 1000 V for CDM.
- Is the 74AHCT245D,112 still in production?
No, the 74AHCT245D,112 is withdrawn/end-of-life.
