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| Product attributes | Property Value |
| Manufacturer | IDT, Integrated Device Technology Inc |
| Product Series | |
| 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 | 15mA, 64mA |
| Voltage - Supply | 4.75V ~ 5.25V |
| Operating Temperature | 0°C ~ 70°C (TA) |
| Grade | - |
| Qualification | - |
| Mounting Type | Surface Mount |
| Package / Case | 20-SSOP (0.154", 3.90mm Width) |
| Supplier Device Package | 20-SSOP (0.154", 3.90mm Width) |
The IDT74FCT645ATQ is a high-speed non-inverting transceiver from IDT, designed for bidirectional data transfer in 5V systems. It features 1 channel with 3-State outputs, enabling flexible bus interfacing. Operating from 4.75V to 5.25V, it is compatible with standard TTL logic levels. The device can source 15mA and sink 64mA, providing robust drive for bus lines and capacitive loads. Housed in a 20-SSOP package, it is suitable for computing, telecommunications, and industrial applications requiring reliable bidirectional communication.
- Bidirectional Data Transfer: Simplifies bus design by allowing data flow in both directions with a single IC.
- High Sink Current (64mA): Ensures signal integrity on heavily loaded buses.
- 3-State Outputs: Prevents bus contention and supports multiple transceivers on the same bus.
- Fast FCT Logic: Provides low propagation delay for high-speed applications.
- Compact SSOP Package: Ideal for space-constrained designs.
Bidirectional Bus Transceiver
Use the IDT74FCT645ATQ to interface between two data buses in a microprocessor system. The direction control pin allows data flow in either direction, while 3-State outputs prevent bus contention.
Memory Data Bus Buffering
Buffer the data bus between a CPU and memory subsystem. The high sink current (64mA) ensures reliable data transfer even with many memory devices connected.
Peripheral Interface Adapter
Connect a microcontroller to external peripherals such as UARTs, timers, or I/O expanders. The transceiver allows bidirectional communication over a shared data bus.
Telecom Line Card Interface
Drive data between backplane and line card logic in telecom equipment. The 3-State outputs enable hot-swapping of line cards without disrupting the bus.
Industrial Control Data Exchange
Facilitate data exchange between PLC modules and central controllers. The robust drive capability handles long cable runs in industrial environments.
Test and Measurement Equipment
Route test data between multiple instruments and a central controller. The bidirectional capability simplifies wiring and reduces component count.
- Q: What is the logic family of the IDT74FCT645ATQ?
- A: It belongs to the FCT logic family, optimized for high-speed 5V operation.
- Q: What is the function of this IC?
- A: It is a non-inverting transceiver with 1 channel, enabling bidirectional data transfer.
- Q: What is the output type?
- A: The outputs are 3-State, allowing the transceiver to be isolated from the bus when not active.
- Q: What is the operating voltage range?
- A: It operates at 4.75V to 5.25V, standard for 5V logic systems.
- Q: What is the package type?
- A: It comes in a 20-SSOP package with a 3.90mm width.
- Q: What are the output current capabilities?
- A: It can source 15mA and sink 64mA, providing strong drive for bidirectional buses.
IDT74FCT645ATQ.pdf
- Q: What is the logic family of the IDT74FCT645ATQ?
- A: It belongs to the FCT logic family, optimized for high-speed 5V operation.
- Q: What is the function of this IC?
- A: It is a non-inverting transceiver with 1 channel, enabling bidirectional data transfer.
- Q: What is the output type?
- A: The outputs are 3-State, allowing the transceiver to be isolated from the bus when not active.
- Q: What is the operating voltage range?
- A: It operates at 4.75V to 5.25V, standard for 5V logic systems.
- Q: What is the package type?
- A: It comes in a 20-SSOP package with a 3.90mm width.
- Q: What are the output current capabilities?
- A: It can source 15mA and sink 64mA, providing strong drive for bidirectional buses.