SN74ALS29863DW

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Logic - Buffers, Drivers, Receivers, Transceivers

SN74ALS29863DW is a 3V-5V supply voltage Bidirectional Bus Transceiver circuit with Bi-directional control. It is used in many applications such as CPLD, FPGA, and other logic systems. It can reduce system power consumption and increase performance of low power design.

Application Field

SN74ALS29863DW has wide application range especially on peripheral circuits of CPLD / FPGA. It can be used for the buffer and switch of peripheral circuit, for example, transferring the data in and out of the low-voltage microcontroller. It is also applicable for driving shift registers, LED matrix, LCD, and other display modules. The multiplexing of this chip can reduce the I/O port number of CPLD / FPGA, which can significantly reduce the design difficulty and cost.

Working Principle

This circuit consists of bus transceivers, level conversion buffers, three-state drivers, and pull-ups. The bus transceiver can exchange data between two buses. The level conversion buffer can convert the TTL level to CMOS level, or convert the CMOS level to the TTL level; it also contains two sets of circuit. The three-state driver has the function of controlling the data direction (writing or reading). Pull-up can prevent the transmission of over-low level signals.

When data transmission happens, the A set of logic circuit runs firstly; its transceivers are used for transferring data from a bus to another bus. At the same time, the B set of logic circuit runs after the A set, Its transceivers transfer data from another bus. Two sets of logic circuit work concurrently and bidirectionally, so the data can be transferred between A bus and B bus.

SN74ALS29863DW is a cost-effective and power-saving data bus transceiver. It operates stably even at low voltage and has strong anti-jamming capability. Due to its wide application field, this chip is widely used in various fields.

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