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Partname: | SN74ALVC162268DL |
Description: | 12-Bit To 24-Bit Registered Bus Exchanger With 3-State Outputs |
Manufacturer: | Texas Instruments |
Datasheet: | PDF (185K). Click here to download *) |
The device provides synchronous data exchange between the two ports. Data is stored in the internal registers on the low-to-high transition of the clock (CLK) input when the appropriate clock-enable (CLKEN) inputs are low. The select (SEL) line is synchronous with CLK and selects 1B or 2B input data for the A outputs. For data transfer in the A-to-B direction, a two-stage pipeline is provided in the A-to-1B path with a single storage register in the A-to-2B path. Proper control of these inputs allows two sequential 12-bit words to be presented synchronously as a 24-bit word on the B port. Data flow is controlled by the active-low output enables (OEA, OEB). These control terminals are registered so bus direction changes are synchronous with CLK. The B outputs, which are designed to sink up to 12 mA, include 26- resistors to reduce overshoot and undershoot. |
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