Overview
The SN74HCT245PWRG4 is an octal bus transceiver produced by Texas Instruments, designed for asynchronous two-way communication between data buses. This device is part of the HCT (High-Speed CMOS) logic family and is known for its high-current 3-state outputs and low power consumption. The SN74HCT245PWRG4 allows data transmission from the A bus to the B bus or from the B bus to the A bus, depending on the logic level at the direction-control (DIR) input. The output-enable (OE) input can be used to disable the device, effectively isolating the buses. This feature minimizes external timing requirements, making it versatile for various applications.
Key Specifications
| Parameter | Description | Value |
|---|---|---|
| Operating Voltage Range | Voltage range for operation | 4.5 V to 5.5 V |
| Output Drive | Output current at 5 V | ±6 mA |
| Propagation Delay (tpd) | Typical propagation delay at 25°C | 14 ns |
| Input Current | Maximum input current | 1 µA |
| Static Supply Current (ICC) | Maximum static supply current | 80 µA |
| Operating Temperature Range | Temperature range for operation | -40°C to 85°C |
| Package Type | Type of package | TSSOP (PW) with 20 pins |
Key Features
- Operating voltage range of 4.5 V to 5.5 V, forgiving of 5-V power supply rail accuracy.
- High-Current 3-state outputs drive 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 at 25°C.
- ±6-mA output drive at 5 V.
- Low input current of 1 µA maximum.
- Inputs are TTL-voltage compatible.
- Active low output enable and direction control inputs for flexible data transmission.
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 SN74HCT245PWRG4?
The operating voltage range is from 4.5 V to 5.5 V.
- What is the typical propagation delay of the SN74HCT245PWRG4?
The typical propagation delay is 14 ns at 25°C.
- How much current can the outputs drive?
The outputs can drive up to ±6 mA at 5 V.
- What is the maximum static supply current?
The maximum static supply current is 80 µA.
- Are the inputs TTL-voltage compatible?
Yes, the inputs are TTL-voltage compatible.
- What is the purpose of the direction-control (DIR) input?
The DIR input determines the direction of data transmission between the A and B buses.
- How can the device be disabled?
The device can be disabled using the active low output-enable (OE) input.
- What type of package does the SN74HCT245PWRG4 come in?
The device comes in a TSSOP (PW) package with 20 pins.
- What is the operating temperature range of the SN74HCT245PWRG4?
The operating temperature range is from -40°C to 85°C.
- What are some common applications of the SN74HCT245PWRG4?
Common applications include factory automation, grid infrastructure, electronic point of sale, multi-function printers, motor drives, storage systems, and telecom infrastructure.
