Overview
The 74AHC245PW,112 is an octal bus transceiver with 3-state outputs, manufactured by Nexperia USA Inc. This device is part of the 74AHC245 and 74AHCT245 series, designed to facilitate bidirectional data transmission between two buses. It features an output enable (OE) and a send/receive (DIR) pin for direction control, allowing the outputs to assume a high-impedance OFF-state when OE is HIGH. This makes it suitable for use in mixed voltage environments as a translator.
Key Specifications
| Type number | VCC (V) | Logic switching levels | Output drive capability (mA) | tpd (ns) | Number of bits | fmax (MHz) | Power dissipation considerations | Tamb (°C) | Package name |
|---|---|---|---|---|---|---|---|---|---|
| 74AHC245PW | 2.0 - 5.5 | CMOS | ± 8 | 3.5 | 8 | 60 | Low | -40 to +125 | TSSOP20 |
Key Features
- Wide supply voltage range: From 2.0 V to 5.5 V, making it versatile for various applications.
- Balanced propagation delays: Ensures consistent signal timing.
- Schmitt-trigger action on all inputs: Improves noise immunity.
- Overvoltage tolerant inputs: Up to 5.5 V, allowing use in mixed voltage environments.
- CMOS low power dissipation: Reduces power consumption.
- ESD protection: HBM (Human Body Model) exceeds 2000 V and CDM (Charged Device Model) exceeds 1000 V.
- High noise immunity: Enhances reliability in noisy environments.
Applications
The 74AHC245PW,112 is suitable for a wide range of applications, including:
- Automotive electronics: For use in vehicle systems requiring reliable data transmission.
- Industrial control systems: For applications needing robust and reliable data transfer.
- Consumer electronics: In devices such as mobile phones, tablets, and other portable electronics.
- Power and computing systems: For use in power supplies, computing hardware, and other high-reliability applications.
Q & A
- What is the primary function of the 74AHC245PW,112?
The primary function is to act as an octal bus transceiver with 3-state outputs, enabling bidirectional data transmission between two buses.
- What is the voltage range for the VCC supply?
The VCC supply voltage range is from 2.0 V to 5.5 V.
- What is the significance of the OE and DIR pins?
The OE (output enable) pin controls the output state, and the DIR (direction) pin determines the direction of data transmission.
- What are the logic switching levels for the 74AHC245PW?
The logic switching levels are CMOS for the 74AHC245 and TTL for the 74AHCT245.
- What is the maximum frequency of operation?
The maximum frequency of operation is 60 MHz.
- What kind of ESD protection does the device have?
The device has ESD protection exceeding 2000 V for HBM and 1000 V for CDM.
- What is the operating temperature range?
The operating temperature range is from -40 °C to +125 °C.
- What package type is the 74AHC245PW available in?
The device is available in a TSSOP20 package.
- What are some key applications for this device?
Key applications include automotive electronics, industrial control systems, consumer electronics, and power and computing systems.
- How does the device handle overvoltage inputs?
The device has overvoltage tolerant inputs up to 5.5 V, making it suitable for mixed voltage environments.
