SN74ALVCH16832

This  SN74ALVCH16832 1-bit to 4-bit address register/driver is designed for 1.65-V to 3.6-V V_CC operation. This device is ideal for use in applications in which a single address bus is driving four separate memory locations. The SN74ALVCH16832 can be used as a buffer or a register, depending on the logic level of the select (SEL) input.

When SEL is a logic high, the device is in the buffer mode. The outputs follow the inputs and are controlled by the two output-enable (OE) inputs. Each OE controls two groups of seven outputs.When SEL is a logic low, the device is in the register mode. The register is an edge-triggered D-type flip-flop. On the positive transition of the clock (CLK) input, data at the A inputs is stored in the internal registers. OE operates the same as in the buffer mode.When OE is a logic low, the outputs are in a normal logic state (high or low logic level). When OE is a logic high, the outputs are in the high-impedance state.Neither SEL nor OE affect the internal operation of the flip-flops. Old data can be retained or new data can be entered while the outputs are in the high-impedance state.To ensure the high-impedance state of SN74ALVCH16832  during power up or power down, OE should be tied to V_CC 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 SN74ALVCH16832 is characterized for operation from 40°C to 85°C.