Texas Instruments SN74ALVCH16821
The SN74ALVCH16821 can be used as two 10-bit flip-flops or one 20-bit flip-flop. The 20 flip-flops are edge-triggered D-type flip-flops.FEATURES
● Member of the Texas Instruments Widebus™ Family● Bus Hold on Data Inputs Eliminates the Need for External Pullup/Pulldown Resistors
● Latch-Up Performance Exceeds 250 mA Per JESD 17
● ESD Protection Exceeds JESD 22 – 2000-V Human-Body Model (A114-A) – 200-V Machine Model (A115-A)
DESCRIPTION
/ORDERING INFORMATION This 20-bit bus-interface flip-flop is designed for 1.65-V to 3.6-V VCC operation. On the positive transition of the clock (CLK) input, the device provides true data at the Q outputs. A buffered output-enable (OE) input can be used to place the ten outputs in either a normal logic state (high or low logic levels) 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 need for 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.