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| Product attributes | Property Value |
| Manufacturer | onsemi |
| Product Series | 74HCT |
| Packaging | Bulk | |
| Part Status | Active |
| Logic Type | Transceiver, Non-Inverting |
| Number of Elements | 1 |
| Number of Bits per Element | 8 |
| Input Type | - |
| Output Type | 3-State |
| Current - Output High, Low | 6mA, 6mA |
| Voltage - Supply | 4.5V ~ 5.5V |
| Operating Temperature | -55°C ~ 125°C (TA) |
| Grade | - |
| Qualification | - |
| Mounting Type | Surface Mount |
| Package / Case | 20-SOIC (0.209", 5.30mm Width) |
| Supplier Device Package | 20-SOIC |
| ROHS |  |
The MC74HCT245AF from onsemi is a non-inverting transceiver from the 74HCT logic family. It features a single channel of bidirectional data flow with 3-State outputs for bus isolation. Operating from 4.5V to 5.5V, it is designed for 5V TTL systems, with 6mA output drive capability. The device offers TTL-compatible inputs, making it a drop-in replacement for bipolar TTL transceivers. With a temperature range of -55°C to 125°C, it is suitable for military and automotive applications. Packaged in a 20-SOIC, this transceiver is ideal for 5V bus interfacing, data buffering, and signal routing.
- TTL-Compatible Inputs: Directly interfaces with 5V TTL logic without level shifting.
- Wide Temperature Range (-55°C to 125°C): Suitable for extreme environments like automotive and aerospace.
- 3-State Outputs: Enables bus sharing and prevents data corruption in multi-master systems.
- Bidirectional Data Flow: Simplifies bus design by allowing data transfer in both directions with a single IC.
5V TTL Bus Transceiving
In 5V digital systems, this transceiver enables bidirectional data flow between two buses, with 3-State control for bus isolation and multiplexing.
Microprocessor System Data Bus
It buffers the data bus between a microprocessor and memory or I/O devices, reducing loading on the CPU and improving signal integrity.
Industrial PLC I/O Modules
In programmable logic controllers, it interfaces between the main processor and I/O modules, providing robust 5V signal transfer in noisy industrial environments.
Legacy System Interfacing
For retrofitting older 5V TTL systems, this transceiver provides a reliable interface to modern components while maintaining 5V compatibility.
Test and Measurement Equipment
In bench instruments, it routes data between multiple measurement modules and a central controller, with 3-State outputs for selective access.
Automotive Body Control Modules
With a -55°C to 125°C range, it is suitable for automotive body control modules that require reliable 5V bus communication.
- Q: What logic family is the MC74HCT245AF?
- A: It belongs to the 74HCT family, which is High-Speed CMOS with TTL-compatible inputs, designed for 5V systems.
- Q: What is the function of this IC?
- A: It is a non-inverting transceiver with 1 channel, allowing bidirectional data transfer between two buses.
- Q: What is the output type?
- A: The outputs are 3-State, enabling the transceiver to be isolated from the bus when not active.
- Q: What is the operating voltage range?
- A: It operates from 4.5V to 5.5V, making it ideal for standard 5V TTL logic systems.
- Q: What is the output current capability?
- A: It can source and sink 6mA of current, suitable for driving standard TTL loads.
- Q: What package is available?
- A: It comes in a 20-SOIC package with a 5.30mm width.
MC74HCT245AF.pdf
- Q: What logic family is the MC74HCT245AF?
- A: It belongs to the 74HCT family, which is High-Speed CMOS with TTL-compatible inputs, designed for 5V systems.
- Q: What is the function of this IC?
- A: It is a non-inverting transceiver with 1 channel, allowing bidirectional data transfer between two buses.
- Q: What is the output type?
- A: The outputs are 3-State, enabling the transceiver to be isolated from the bus when not active.
- Q: What is the operating voltage range?
- A: It operates from 4.5V to 5.5V, making it ideal for standard 5V TTL logic systems.
- Q: What is the output current capability?
- A: It can source and sink 6mA of current, suitable for driving standard TTL loads.
- Q: What package is available?
- A: It comes in a 20-SOIC package with a 5.30mm width.