(10pcs) SN74ALVCH162721GR Flip Flop D-Type Bus Interface Pos-Edge 3ST 1Element
Tax included.
This listing is for 10 pcs.
This 20-bit flip-flop is designed for low-voltage 1.65-V
to 3.6-V VCC operation.
The 20 flip-flops of the SN74ALVCH162721 are
edge-triggered D-type flip-flops with qualified clock
storage. On the positive transition of the clock (CLK)
input, the device provides true data at the Q outputs if
the clock-enable (CLKEN) input is low. If CLKEN is
high, no data is stored.
A buffered output-enable (OE) input places the 20
outputs in either a normal logic state (high or low
level) or the high-impedance state. In the
high-impedance state, the outputs neither load nor
drive the bus lines significantly. The high-impedance
state and increased drive provide the capability to drive bus lines without interface or pullup components. OE
does not 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 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 outputs, which are designed to sink up to 12 mA, include equivalent 26-Ω resistors to reduce overshoot and
undershoot.
The SN74ALVCH162721 is characterized for operation from -40°C to 85°C.