Overview
The SN74HCT245DWRG4 is an octal bus transceiver produced by Texas Instruments. It is designed for asynchronous two-way communication between data buses, making it a crucial component in various electronic systems. This device features a direction control and an active low output enable, allowing for flexible data transmission between two buses. The SN74HCT245DWRG4 is part of the HCT (High-Speed CMOS) family, which is compatible with TTL (Transistor-Transistor Logic) voltage levels, ensuring seamless integration into existing logic systems.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Operating Voltage Range | 4.5 | 5.5 | V | |
| High-Level Output Voltage (VOH) | 4.4 | 4.499 | V | |
| Low-Level Output Voltage (VOL) | 0.001 | 0.1 | V | |
| Output Drive at 5 V | ±6 | mA | ||
| Input Current (II) | ±0.1 | ±100 | nA | |
| Supply Current (ICC) | 8 | 80 | µA | |
| Propagation Delay (tpd) | 14 | 20 | 30 | ns |
| Operating Temperature Range | -40 | 85 | °C |
Key Features
- Operating voltage range of 4.5 V to 5.5 V, making it forgiving of 5-V power supply rail accuracy.
- High-Current 3-state outputs capable of driving bus lines directly or up to 15 LSTTL loads.
- Low power consumption with a maximum static supply current of 80 µA.
- Typical propagation delay of 14 ns and balanced output drive of ±6 mA at 5 V.
- Inputs are TTL-voltage compatible.
- Active low output enable and direction control for flexible data transmission.
- Center VCC and GND pin configurations to minimize high-speed switching noise.
Applications
- Factory Automation and Control
- Grid Infrastructure
- Electronic Point of Sale
- Multi-Function Printers
- Motor Drives
- Storage Systems
- Telecom Infrastructure
Q & A
- What is the operating voltage range of the SN74HCT245DWRG4?
The operating voltage range is from 4.5 V to 5.5 V.
- What is the typical propagation delay of the SN74HCT245DWRG4?
The typical propagation delay is 14 ns.
- How many LSTTL loads can the SN74HCT245DWRG4 drive?
The device can drive up to 15 LSTTL loads.
- What is the maximum static supply current of the SN74HCT245DWRG4?
The maximum static supply current is 80 µA.
- Are the inputs of the SN74HCT245DWRG4 TTL-voltage compatible?
- What is the purpose of the direction control and output enable inputs?
The direction control input determines the direction of data transmission between the two buses, and the output enable input can be used to disable the device, putting all ports in a high impedance state.
- What are some common applications of the SN74HCT245DWRG4?
Common applications include factory automation, grid infrastructure, electronic point of sale, multi-function printers, motor drives, storage systems, and telecom infrastructure.
- What is the operating temperature range of the SN74HCT245DWRG4?
The operating temperature range is from -40°C to 85°C.
- How does the SN74HCT245DWRG4 minimize high-speed switching noise?
The device minimizes high-speed switching noise through its center VCC and GND pin configurations.
- What is the significance of the 3-state outputs in the SN74HCT245DWRG4?
The 3-state outputs allow the device to drive bus lines directly or up to 15 LSTTL loads and can be put into a high impedance state when not active.
