Overview
The SN74HC245DW is an octal bus transceiver with 3-state outputs, manufactured by Texas Instruments. This integrated circuit is designed for asynchronous two-way communication between data buses, making it a versatile component in various digital systems. It features a wide operating voltage range and high-current outputs, making it suitable for driving bus lines directly or up to 15 LSTTL loads.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (VCC) | 2 | 5 | 6 | V |
| Operating Temperature Range | -40 | 85 | °C | |
| Propagation Delay (tpd) | 15 | 22 | 34 | ns |
| Output Current (Continuous) | ±35 | mA | ||
| Input Current (Max) | 1 | µA | ||
| Supply Current (Max) | 0.08 | mA | ||
| Package Type | SOIC (DW) | |||
| Number of Pins | 20 |
Key Features
- Wide operating voltage range of 2 V to 6 V
- High-current 3-state outputs drive bus lines directly or up to 15 LSTTL loads
- Low power consumption, with a maximum supply current of 80 µA
- Typical propagation delay of 12 ns
- ±6-mA output drive at 5 V
- Low input current of 1 µA maximum
- Direction control input to select data transmission direction
- Output enable input to isolate the buses
Applications
The SN74HC245DW is suitable for various applications requiring asynchronous two-way communication between data buses. These include:
- Microprocessor systems
- Data processing equipment
- Peripheral devices
- Automotive and industrial control systems
Q & A
- What is the operating voltage range of the SN74HC245DW?
The operating voltage range is from 2 V to 6 V. - What is the maximum propagation delay of the SN74HC245DW?
The maximum propagation delay is approximately 34 ns. - How many LSTTL loads can the SN74HC245DW drive?
The SN74HC245DW can drive up to 15 LSTTL loads. - What is the package type of the SN74HC245DW?
The package type is SOIC (DW) with 20 pins. - What is the operating temperature range of the SN74HC245DW?
The operating temperature range is from -40°C to 85°C. - Does the SN74HC245DW have direction control and output enable inputs?
Yes, it has both direction control and output enable inputs. - What is the maximum supply current of the SN74HC245DW?
The maximum supply current is 80 µA. - Is the SN74HC245DW RoHS and REACH compliant?
Yes, it is both RoHS and REACH compliant. - What is the typical output drive at 5 V for the SN74HC245DW?
The typical output drive at 5 V is ±6 mA. - What is the low input current maximum for the SN74HC245DW?
The low input current maximum is 1 µA.
