MM54HCT688 - National Semiconductor

MM54HCT688 8-Bit Magnitude Comparator

This equality detector utilizes advanced silicon-gate CMOS technology to compare bit for bit two 8-bit words and indicate whether or not they are equal The PeQ output indicates equality when it is low A single active low enable is provided to facilitate cascading of several packages and enable comparison of words greater than 8 bits This device is useful in .

Features

Y TTL input compatible Y Typical propagation delay 20 ns Y Low quiescent current 80 mA maximum (74HCT Series) Y Large output current 4 mA Y Same as HCT521 Logic Diagrams C1995 National Semiconductor Corporation TL F 5371 TL F 5371
  – 2 RRD-B30M105 Printed in U S A Absolute Maximum Ratings (Notes 1 2) If Military Aerospace specified devices are required please contact the National Semiconductor Sales Office Distributors for availability and specifications Supply Voltage (VCC) DC Input Voltage (VIN) DC Output Voltage (VOUT) Clamp Diode Current (IIK IOK) DC Output Current per pin (IOUT) DC V.