Low-Voltage 1.8/2.5/3.3V 16-Bit Buffer

With 26Ω Series Resistors 3.6V-Tolerant Input and Output (3-State, Non-Inverting)

The MC74VCX162244 is an advanced performance, non–inverting 16–bit buffer. It is designed for very high–speed, very low–power operation in 1.8V, 2.5V or 3.3V systems.

When operating at 2.5V (or 1.8V) the part is designed to tolerate voltages it may encounter on either inputs or outputs when interfacing to 3.3V busses. It is guaranteed to be over–voltage tolerant to 3.6V.

The MC74VCX162244 is nibble controlled with each nibble functioning identically, but independently. It is designed with 26Ω series resistors in each of the outputs to reduce noise. The control pins may be tied together to obtain full 16–bit operation. The 3–state outputs are controlled by an Output Enable (OEn) input for each nibble. When OEn is LOW, the outputs are on. When OEn is HIGH, the outputs are in the high impedance state.

• Designed for Low Voltage Operation: VCC = 1.8–3.6V

• 3.6V Tolerant Inputs and Outputs

• High Speed Operation: 3.3ns max for 3.0 to 3.6V

3.8ns max for 2.3 to 2.7V

5.7ns max for 1.8V

• Static Drive: ±12mA Drive at 3.0V

±8mA Drive at 2.3V

±4mA Drive at 1.8V

• Supports Live Insertion and Withdrawal

• IOFF Specification Guarantees High Impedance When VCC = 0V

• Near Zero Static Supply Current in All Three Logic States (20µA)

Substantially Reduces System Power Requirements

• Latchup Performance Exceeds ±300mA

• ESD Performance: Human Body Model >2000V; Machine Model >200V