Overview
The SN74LVT245BPWRG4 is a 3.3-V ABT (Advanced BiCMOS Technology) octal bus transceiver produced by Texas Instruments. This device is designed for low-voltage operation, specifically at 3.3 V, but it also supports interface with 5-V systems. It is used for asynchronous communication between data buses, allowing data transmission from the A bus to the B bus or vice versa, controlled by the direction-control (DIR) input. The output-enable (OE) input allows the device to be disabled, effectively isolating the buses.
Key Specifications
| Parameter | Description | Value |
|---|---|---|
| Supply Voltage Range | VCC | 2.7 V to 3.6 V |
| Operating Temperature Range | -40°C to 85°C | |
| Package Type | 20-TSSOP (Thin Shrink Small Outline Package) | |
| Pin Count | 20 pins | |
| Output Type | 3-State Outputs | |
| Propagation Delay Time (tPLH/tPHL) | A or B to B or A | 1.2 ns to 3.5 ns (typical at VCC = 3.3 V, TA = 25°C) |
| Peak Reflow Temperature | 260°C | |
| Terminal Pitch | 0.65 mm |
Key Features
- Low-Voltage Operation: Designed for 3.3-V VCC operation with compatibility for 5-V system environments.
- Direction Control: Data transmission direction controlled by the DIR input, allowing data to be transmitted from A bus to B bus or vice versa.
- Output Enable: OE input allows the device to be disabled, isolating the buses and placing the outputs in a high-impedance state.
- Hot-Insertion Capability: Fully specified for hot-insertion applications with Ioff and power-up 3-state circuitry to prevent damaging current backflow and driver conflict.
- High-Speed Operation: Fast propagation delay times, making it suitable for high-speed data transmission applications.
Applications
- Data Bus Communication: Ideal for asynchronous communication between data buses in various digital systems.
- Mixed Voltage Systems: Suitable for use in systems that require interface between 3.3-V and 5-V logic levels.
- Embedded Systems: Used in embedded systems that require fast and reliable data transmission.
- Industrial Automation: Applied in industrial automation systems where robust and reliable data communication is essential.
Q & A
- What is the primary function of the SN74LVT245BPWRG4?
The primary function is to act as an octal bus transceiver, enabling data transmission between two data buses (A and B) in either direction.
- What is the operating voltage range of the SN74LVT245BPWRG4?
The device operates within a supply voltage range of 2.7 V to 3.6 V.
- What type of package does the SN74LVT245BPWRG4 come in?
The device is available in a 20-TSSOP (Thin Shrink Small Outline Package).
- How many pins does the SN74LVT245BPWRG4 have?
The device has 20 pins.
- What is the purpose of the DIR input in the SN74LVT245BPWRG4?
The DIR input controls the direction of data transmission between the A and B buses.
- What is the function of the OE input in the SN74LVT245BPWRG4?
The OE input allows the device to be disabled, placing the outputs in a high-impedance state and isolating the buses.
- Is the SN74LVT245BPWRG4 suitable for hot-insertion applications?
Yes, it is fully specified for hot-insertion applications with Ioff and power-up 3-state circuitry.
- What is the peak reflow temperature for the SN74LVT245BPWRG4?
The peak reflow temperature is 260°C.
- What are the typical propagation delay times for the SN74LVT245BPWRG4?
The typical propagation delay times (tPLH/tPHL) are 1.2 ns to 3.5 ns at VCC = 3.3 V and TA = 25°C.
- In what temperature range can the SN74LVT245BPWRG4 operate?
The device can operate in a temperature range of -40°C to 85°C.
