详细说明：

M74HC688 8 Bit Equality Comparator

The M74HC688 is an high speed CMOS 8 BIT EQUALITY COMPARATOR fabricated with silicon gate C2MOS technology.

The M74HC688 compares bit for bit two 8-bit words applied on inputs P0 - P7 and inputs Q0 - Q7 and indicates whether or not they are equal. A single active low enable is provided to facilitate cascading several packages to enable comparison of words greater than 8 bits.

All inputs are equipped with protection circuits against static discharge and transient excess voltage

技术特性

• High speed:
  • tPD= 17ns (TYP.) at VCC= 6V
• Low power dissipation:
  • ICC= 4µA(MAX.) at TA=25°C
• High noise immunity:
  • VNIH= VNIL= 28 % VCC(MIN.)
• Symmetrical output impedance:
  • |IOH| = IOL= 4mA (MIN)
• Balanced propagation delays:
  • tPLH tPHL
• Wide operating voltage range:
  • VCC(OPR) = 2V to 6V
• Pin and function compatible with
  • 74 series 688

M74HC688 订购信息

DATASHEET