SN74ALVCH162268GR

The SN74ALVCH162268GR from Texas Instruments is a 12-bit to 24-bit registered bus exchanger designed for applications requiring data transfer from a narrow, high-speed bus to a wider, lower-frequency bus. This device operates over a wide voltage range of 1.65V to 3.6V, making it suitable for various system designs.

Key electrical characteristics include a maximum propagation delay of 4.8 ns at 3.3V and an output drive capability of ±24mA at 3.3V. The B-port outputs are equipped with equivalent 26-Ω series resistors, eliminating the need for external resistors and reducing overshoot and undershoot. Bus hold on data inputs negates the requirement for external pull-up or pull-down resistors.

This registered bus exchanger provides synchronous data exchange between its two ports. Data is registered on the low-to-high transition of the clock input when clock-enable inputs are low. The select line is synchronous with the clock and determines which input data is routed to the A outputs. Data flow is managed by active-low output enables (OEA, OEB), which are also registered for synchronous bus direction changes.

The SN74ALVCH162268GR is available in a 56-TSSOP package, suitable for surface mounting. Its operating temperature range is -40°C to 85°C.