SN74ALVCH16524
18-BIT REGISTERED BUS TRANSCEIVER
WITH 3-STATE OUTPUTS


SCES080 - JULY 1996


 

 

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features

description

This 18-bit universal bus transceiver is designed for 2.3-V to 3.6-V VCC operation.

Data flow in each direction is controlled by output-enable (and ) and clock enable () inputs. For the A-to-B data flow, the data flows through a single register. The B-to-A data can flow through a four-stage pipeline register path, or through a single register path, depending on the state of .

Data is stored in the internal registers on the low-to-high transition of the CLK input, provided that the appropriate input is low. The B-to-A data transfer is synchronized with the CLK input.

To ensure the high-impedance state during power up or power down, should be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.

Active bus-hold circuitry is provided to hold unused or floating data inputs at a valid logic level.

The SN74ALVCH16524 is available in TI's shrink small-outline (DL) and thin shrink small-outline (DGG) packages, which provide twice the I/O pin count and functionality of standard small-outline packages in the same printed-circuit-board area.

The SN74ALVCH16524 is characterized for operation from -40°C to 85°C.