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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, 12mA |
| Voltage - Supply | 4.75V ~ 5.25V |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Grade | - |
| Qualification | - |
| Mounting Type | Surface Mount |
| Package / Case | 24-SSOP (0.154", 3.90mm Width) |
| Supplier Device Package | 24-SSOP (0.154", 3.90mm Width) |
The IDT74FCT2543TQ is a high-speed, non-inverting transceiver from the FCT logic family. Designed for 5V systems (4.75V to 5.25V), it provides bidirectional data transfer with 3-State outputs to prevent bus contention. With a strong output current of 15mA/12mA, it can drive heavy capacitive loads, making it ideal for memory interfacing, backplane communication, and general bus buffering. Housed in a compact 24-SSOP package, it is a reliable choice for demanding digital systems.
- High-Speed FCT Logic: Optimized for fast propagation delays, critical for high-performance computing and communication systems.
- 3-State Outputs: Allows multiple devices to share a common bus safely, preventing data corruption.
- Strong Drive Capability (15mA/12mA): Ensures signal integrity when driving long traces or multiple loads.
- Wide 5V Supply Range (4.75V-5.25V): Compatible with standard 5V TTL systems, simplifying power design.
High-Speed Bus Interfacing
Use the IDT74FCT2543TQ to interface between two high-speed 5V data buses. The 3-State outputs prevent bus contention, and the FCT family's fast propagation delay ensures minimal signal latency.
Bidirectional Data Buffering
In systems where data flows in both directions, this transceiver provides the necessary buffering. Its non-inverting nature preserves signal polarity, simplifying logic design.
Memory Address/Data Driving
Drive memory address or data lines with the high current capability (15mA/12mA). This ensures reliable signal integrity even with multiple memory chips connected to the bus.
Backplane Communication
In rack-mounted systems, this transceiver can drive signals across a backplane. The 3-State outputs allow multiple boards to share the same bus without interference.
Level Shifting (5V to 5V TTL)
While not a level shifter, it regenerates and strengthens 5V TTL signals, ensuring clean logic levels over longer traces or cables.
Industrial Control I/O
For industrial controllers operating at 5V, this IC provides robust buffering for I/O modules, protecting the main controller from external noise and loading.
- Q: What is the logic family of the IDT74FCT2543TQ?
- A: This device is from the FCT (Fast CMOS TTL) logic family, designed for high-speed bus applications.
- Q: What is the function of this IC?
- A: It is a non-inverting transceiver, allowing bidirectional data flow between two buses.
- Q: How many channels does it have?
- A: It features 1 channel (8-bit wide, typically used as a byte-wide transceiver).
- Q: What is the output type?
- A: The outputs are 3-State, enabling connection to a shared bus without contention.
- Q: What is the operating voltage range?
- A: It operates from 4.75V to 5.25V, making it suitable for 5V systems.
- Q: What package is available?
- A: It comes in a 24-SSOP (0.154", 3.90mm Width) package.
IDT74FCT2543TQ.pdf
- Q: What is the logic family of the IDT74FCT2543TQ?
- A: This device is from the FCT (Fast CMOS TTL) logic family, designed for high-speed bus applications.
- Q: What is the function of this IC?
- A: It is a non-inverting transceiver, allowing bidirectional data flow between two buses.
- Q: How many channels does it have?
- A: It features 1 channel (8-bit wide, typically used as a byte-wide transceiver).
- Q: What is the output type?
- A: The outputs are 3-State, enabling connection to a shared bus without contention.
- Q: What is the operating voltage range?
- A: It operates from 4.75V to 5.25V, making it suitable for 5V systems.
- Q: What package is available?
- A: It comes in a 24-SSOP (0.154", 3.90mm Width) package.