1 General description
The HEF4077B is a quad 2-input EXCLUSIVE-NOR gate. The outputs are fully buffered
for the highest noise immunity and pattern insensitivity to output impedance.
The HEF4077B operates over a recommended VDD power supply range of 3 V to 15 V
referenced to VSS (usually ground). Unused inputs must be connected to VDD, VSS, or
another input.

2 Features and benefits
• Fully static operation
• 5 V, 10 V, and 15 V parametric ratings
• Standardized symmetrical output characteristics
• Specified from -40 °C to +85 °C
• Complies with JEDEC standard JESD 13-B