74ALVCH16245GRDR

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The 74ALVCH16245GRDR is a part of the general-purpose, low voltage advanced CMOS logic family ALVCH. It is a high-performance, 16-bit registered transceiver with 3-state output, used for data transmission and signal buffering applications. It has various features making it particularly suitable for automotive applications, including fast edges, excellent noise immunity, and low current draw. The versatile 74ALVCH16245GRDR is capable of being used as a 16-bit bidirectional buffer, or as a 4-bit bidirectional transceiver.

Application Field

The 74ALVCH16245GRDR is a very versatile device which can be used in a variety of applications, some of which include digital logic interface, signaling, and bridging applications. It is suitable for applications requiring both low-current draw and improved noise immunity such as automotive, medical, and industrial systems. Due to its 3-state output, it is suitable for data bus systems that require multiple data lines, where the 74ALVCH16245GRDR can be used to change the direction of data flow.

Moreover, the 74ALVCH16245GRDR can be used as a clock driver due to its fast edges, allowing for the propagation of a signal much faster than with some other transceiver options.

Working Principle

The 74ALVCH16245GRDR is a 16-bit registered transceiver with 3-state outputs, that functions as a bidirectional buffer or as a 4-bit bidirectional transceiver. It is composed of two sets of two 8-bit transceivers, the lower eight bits, A0-A7, are controlled by the control outputs UBO, UB1, UBE, LBE, LB1 and LBO, so that the direction of data transfer can be changed from the lower eight bits to the upper eight bits, or vice versa. The UBE and LBE control outputs select whether the upper or lower transceiver is to be enabled.

When the direction of data flow is changed, the 74ALVCH16245GRDR takes two clock cycles. During the two clock cycles, the data is stored in registers and then forwarded in the new direction, while the 3-state outputs are at high impedance, not affecting the correct output of the data.

The 74ALVCH16245GRDR also contains a Vcc enable control, which allows the device to operate with a voltage of up to 5V, and adds additional protection against noise. Additionally, the device comes with power-on reset and output enable control, allowing for further user control over the transceiver’s operation.

Conclusion

The 74ALVCH16245GRDR is a versatile registered transceiver with 3-state outputs, making it suitable for various data transmission and signal buffering applications. It is suitable for applications demanding both low-current draw and improved noise immunity, like automotive, medical, and industrial systems. It also has the added advantage of being able to change the direction of data flow in two clock cycles, and can even be used as a clock driver.

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