SCAS588D - MAY 1997 - REVISED JANUARY 1998
Series Resistors, So No External Resistors Are RequiredEPIC and Widebus are trademarks of Texas Instruments Incorporated.
This 1-bit to 4-bit address register/driver is designed for 2.3-V to 3.6-V VCC operation. This device is ideal for use in applications in which a single address bus is driving four separate memory locations. The SN74ALVCH162832 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\) controls. 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\ controls operate 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.
The outputs, which are designed to sink up to 12 mA, include equivalent 26- resistors to reduce overshoot and undershoot.
To ensure the high-impedance state during power up or power down, OE\ 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 SN74ALVCH162832 is characterized for operation from -40°C to 85°C.
View more information about generic part numbers:SN74ALVCH162832
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