The 74ACT16543 from Texas Instruments is a high-performance, 16-bit registered transceiver that combines D-type latches and D-type flip-flops to allow data flow in transparent, latched, and clocked modes. This versatile component is part of the 74ACT family, known for its high-speed operation while maintaining the CMOS low power consumption.
Operating within a voltage range of 4.5V to 5.5V, the 74ACT16543 provides a robust interface for bidirectional communication between two buses. The device features two sets of eight D-type flip-flops with separate input and output control for use in bus-oriented applications where the data flow is managed by latch-enable (LE), output-enable (OE), and clock (CLK) inputs.
Key Features:
- Logic Type: Registered Transceiver
- Number of Bits per Element: 8
- Number of Elements: 2
- Input and Output Voltage Levels: Compatible with TTL input and output voltage levels
- High Drive: Capable of driving 15 LSTTL loads
- High On-Off Output Voltage Ratio: Ensures a high degree of noise immunity
- Low Pulse Skew: Provides reliable parallel data applications
The device's two 8-bit back-to-back registers allow for separate control during simultaneous read/write operations of each bus. The 74ACT16543's clear function is synchronous and is activated by a low-level input on the clear pin (CLR). This feature ensures that all outputs are in a low state when the clear function is in effect.
With its fast setup times and high-impedance outputs during power-up, this integrated circuit ensures that the device is suitable for interfacing with bus lines in a system during both power-up and power-down. The 74ACT16543 is characterized for operation from -40°C to 85°C, making it reliable for use in a wide range of industrial applications.
Whether you're designing high-speed data acquisition systems, communication interfaces, or need a reliable bus transceiver with storage capability, the 74ACT16543 is an excellent choice for your digital logic applications.
