Overview
The SN74ABT245BPWR is an octal bus transceiver with 3-state outputs, manufactured by Texas Instruments. This device is designed for asynchronous communication between data buses, making it suitable for a variety of applications where data needs to be transmitted between different bus systems. The SN74ABT245BPWR features a TSSOP (Thin Shrink Small Outline Package) with 20 pins, ensuring compact and efficient use in modern electronic designs.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage Range (VCC) | 4.5 to 5.5 | V |
| Input Voltage Range (VI) | −0.5 to 7 | V |
| Operating Free-Air Temperature (TA) | −40 to 85 | °C |
| High-Level Input Voltage (VIH) | 2 | V |
| Low-Level Input Voltage (VIL) | 0.8 | V |
| High-Level Output Current (IOH) | −24 to −32 | mA |
| Low-Level Output Current (IOL) | 48 to 64 | mA |
| Input Transition Rise or Fall Rate (Δt/Δv) | 5 | ns/V |
| Power-Up Ramp Rate (Δt/ΔVCC) | 200 | μs/V |
Key Features
- 3-State Outputs: The device features 3-state outputs, which can be set to high, low, or high-impedance state, allowing for bus isolation and preventing driver conflict.
- Direction Control: The direction of data transmission can be controlled using the DIR input, enabling data to be transmitted from the A bus to the B bus or vice versa.
- Hot-Insertion Capability: The device is fully specified for hot-insertion applications, with Ioff and power-up 3-state circuitry to prevent damaging current backflow and ensure outputs are in the high-impedance state during power up and power down.
- Compact Packaging: Available in a TSSOP (PW) package with 20 pins, making it suitable for space-constrained designs.
Applications
The SN74ABT245BPWR is suitable for various applications requiring asynchronous communication between data buses, such as:
- Computer Systems: For data transmission between different bus systems within a computer.
- Embedded Systems: In microcontroller or microprocessor-based systems where data needs to be exchanged between different modules.
- Industrial Control Systems: For reliable data communication in industrial automation environments.
- Telecommunication Equipment: In devices that require robust and reliable data bus communication.
Q & A
- What is the primary function of the SN74ABT245BPWR?
The primary function is to act as an octal bus transceiver with 3-state outputs for asynchronous communication between data buses. - What is the operating temperature range of the SN74ABT245BPWR?
The operating temperature range is −40°C to 85°C. - What is the supply voltage range for the SN74ABT245BPWR?
The supply voltage range is 4.5 V to 5.5 V. - How many pins does the SN74ABT245BPWR have?
The device has 20 pins in a TSSOP (PW) package. - What is the purpose of the DIR input in the SN74ABT245BPWR?
The DIR input controls the direction of data transmission between the A and B buses. - Does the SN74ABT245BPWR support hot-insertion applications?
Yes, it is fully specified for hot-insertion applications with Ioff and power-up 3-state circuitry. - What are the high-level and low-level output currents for the SN74ABT245BPWR?
The high-level output current (IOH) is −24 to −32 mA, and the low-level output current (IOL) is 48 to 64 mA. - How does the 3-state output feature work in the SN74ABT245BPWR?
The 3-state outputs can be set to high, low, or high-impedance state, allowing for bus isolation and preventing driver conflict. - What is the recommended power-up ramp rate for the SN74ABT245BPWR?
The recommended power-up ramp rate is 200 μs/V. - Where can I find detailed specifications and datasheets for the SN74ABT245BPWR?
Detailed specifications and datasheets can be found on the Texas Instruments website or through distributors like Digi-Key and Mouser.
