Overview
The SN74LS245DBR is a non-inverting octal bus transceiver produced by Texas Instruments. This component is designed to facilitate asynchronous two-way data communication between data buses, ensuring signal integrity and efficient data transmission. It is part of the 74LS series and features surface mount technology, making it suitable for compact and densely populated boards.
Key Specifications
| Parameter | Value |
|---|---|
| Logic Type | Transceiver, Non-Inverting |
| Number of Elements | 1 |
| Number of Bits per Element | 8 |
| Current Output High, Low | 15mA, 24mA |
| Voltage Supply | 4.75V ~ 5.25V |
| Operating Temperature | 0°C ~ 70°C |
| Output Type | 3-State |
| Package | 20-SSOP (0.209", 5.30mm Width) |
Key Features
- 3-State Outputs Drive Bus Lines Directly: This feature allows the device to drive bus lines directly, enhancing signal integrity.
- PNP Inputs Reduce DC Loading on Bus Lines: Reduces the DC loading on bus lines, improving overall system efficiency.
- Hysteresis at Bus Inputs Improves Noise Margins: Enhances noise immunity by providing hysteresis at the bus inputs.
- Typical Propagation Delay Times Port to Port: 8 ns, ensuring high-speed data transmission.
- Low Power Consumption: Operates within a specific voltage supply range, minimizing power consumption.
- Stable Functionality: Maintains stable functionality within a wide operational temperature range of 0°C to 70°C.
Applications
The SN74LS245DBR is typically used in computing and telecommunications systems where data bus management and interface logic are critical. It is ideal for applications requiring asynchronous two-way data communication between different voltage buses.
Q & A
- What is the primary function of the SN74LS245DBR?
The primary function is to facilitate asynchronous two-way data communication between data buses. - What type of logic does the SN74LS245DBR use?
It uses non-inverting logic. - What is the operating temperature range of the SN74LS245DBR?
The operating temperature range is from 0°C to 70°C. - What is the voltage supply range for the SN74LS245DBR?
The voltage supply range is from 4.75V to 5.25V. - What type of outputs does the SN74LS245DBR have?
The device has 3-state outputs. - What is the typical propagation delay time for the SN74LS245DBR?
The typical propagation delay time is 8 ns. - How many bits per element does the SN74LS245DBR have?
It has 8 bits per element. - What type of package does the SN74LS245DBR use?
The device uses a 20-SSOP package. - What are the key advantages of using the SN74LS245DBR?
The key advantages include optimized high-speed data transmission, reduced signal loss, low power consumption, and stable functionality within a wide operational temperature range. - Is the SN74LS245DBR suitable for long-term use?
Yes, it is an active product with long-term availability and support.
