Product Description
The PI74VCX16374 is particularly suitable for implementing buffer registers, I/O ports, bidirectional bus drivers, and working registers. This device can be used as two 8-bit Flip-Flops or one 16-bit flip flop. On the positive transition of the clock (CLK) input, the Q outputs of the flip-flop take on the logic levels set up at the date (D) inputs.
A buffered Output Enable (OE) input can be used to place the eight outputs in either a normal logic state (high or low logic levels) or a high-impedance state in which the outputs neither load nor drive the bus lines significantly. The high-impedance state and the increased drive provide the capability to drive bus lines without need for interface or pullup components. OE does not affect internal operations of the flip-flop. 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 VDD through a pullup resistor; the minimum value of the resistor is determined by the current sinking capability of the driver.
The PI74VCX family is I/O Tolerant, allowing it to operate in mixed 1.8V/3.6V systems.

Product Features
• The PI74VCX Family is designed for low voltage
   operation, VDD = 1.8V to 3.6V
• 3.6V I/O Tolerant Inputs and Outputs
• Supports Live Insertion
• Balanced Drive, ±24mA
• Uses patented Noise Reduction Circuitry
• Typical VOLP (Output Ground Bounce)
   < 0.6V at VDD = 2.5V, TA = 25ºC
• Typical VOHV (Output VOH Undershoot)
   < –0.6V at VDD= 2.5V, TA= 25ºC
• Power-Off high impedance inputs and outputs
• Industrial operation at –40°C to +85°C
• Packaging (Pb-free & Green available):
   – 48-pin 240 mil. wide plastic TSSOP (A)