Overview
The MC74ACT245DTR2G, produced by onsemi, is an octal bidirectional transceiver with 3-state inputs/outputs. This component is designed for bus-oriented applications and features eight non-inverting bidirectional buffers. It is particularly useful in systems where data needs to be transmitted in both directions between two sets of buses. The device includes a Transmit/Receive (T/R) input to control the direction of data flow and an Output Enable input to disable the outputs by placing them in a High Z condition.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| DC Supply Voltage (VCC) | −0.5 to +5.5 | V |
| DC Input Voltage (VIN) | −0.5 to VCC + 0.5 | V |
| DC Output Voltage (VOUT) | −0.5 to VCC + 0.5 | V |
| Output Current - High (IOH) | −24 mA | mA |
| Output Current - Low (IOL) | 24 mA | mA |
| Operating Ambient Temperature Range (TA) | −40 to +85 | °C |
| Storage Temperature Range (TSTG) | −65 to +150 | °C |
| Propagation Delay (tPLH, tPHL) | 1.5 to 9.0 ns | ns |
| Output Enable Time (tPZH, tPZL) | 2.0 to 13.5 ns | ns |
| Output Disable Time (tPHZ, tPLZ) | 2.0 to 13.0 ns | ns |
| Maximum Quiescent Supply Current (ICC) | 80.0 μA | μA |
Key Features
- Non-inverting buffers
- Bidirectional data path
- A and B outputs source/sink 24 mA
- TTL compatible inputs for the MC74ACT245
- Pb-free devices
- 3-state outputs controlled by the Output Enable input
- Transmit/Receive input to control data flow direction
Applications
The MC74ACT245DTR2G is suitable for various bus-oriented applications, including:
- Data transmission and reception in computer systems
- Peripheral interfaces
- Microprocessor systems
- Memory interfaces
- Any application requiring bidirectional data transfer between two buses
Q & A
- What is the primary function of the MC74ACT245DTR2G?
The primary function is to act as an octal bidirectional transceiver with 3-state outputs, facilitating data transfer between two sets of buses.
- How is the direction of data flow controlled in the MC74ACT245DTR2G?
The direction of data flow is controlled by the Transmit/Receive (T/R) input. When T/R is HIGH, data flows from A ports to B ports, and when T/R is LOW, data flows from B ports to A ports.
- What is the purpose of the Output Enable input?
The Output Enable input, when HIGH, disables both A and B ports by placing them in a High Z condition.
- What are the operating temperature ranges for the MC74ACT245DTR2G?
The operating ambient temperature range is −40°C to +85°C, and the storage temperature range is −65°C to +150°C.
- What is the maximum output current capability of the MC74ACT245DTR2G?
The device can source or sink up to 24 mA at both the A and B ports.
- Is the MC74ACT245DTR2G Pb-free?
- What are the typical propagation delays for the MC74ACT245DTR2G?
The propagation delays (tPLH, tPHL) range from 1.5 to 9.0 ns depending on the operating conditions.
- What are the output enable and disable times for the MC74ACT245DTR2G?
The output enable times (tPZH, tPZL) and disable times (tPHZ, tPLZ) range from 2.0 to 13.5 ns.
- What is the maximum quiescent supply current for the MC74ACT245DTR2G?
The maximum quiescent supply current (ICC) is 80.0 μA.
- In what types of applications is the MC74ACT245DTR2G commonly used?
