TC74AC521FW

TC74AC521P/F TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic TC74AC521P,TC74AC521F 8-Bit Equality Comparator The TC74AC521 is an advanced high speed CMOS 8-BIT DIGITAL COMPARATOR fabricated with silicon gate and double-layer metal wiring C2MOS technology. It achieves the high speed operation similar to equivalent Bipolar Schottky TTL while maintaining the CMOS low power dissipation. It compares two 8-bit binary or BCD words applied inputs P0~P7, and inputs Q0~Q7, and indicates whether or not they are equal. A signal active low enable is provided to facilitate cascading of several packages to compare of words greater than 8 bits. All inputs are equipped with protection circuits against static discharge or transient excess voltage. Features High speed: tpd = 6.4 ns (typ.) at VCC = 5 V Low power dissipation: ICC = 8 μA (max) at Ta = 25°C High noise immunity: VNIH = VNIL = 28% VCC (min) Symmetrical output impedance: |IOH| = IOL = 24 mA (min) Capability of driving 50 Ω transmission lines. Balanced propagation delays: tpLH ∼− tpHL Wide operating voltage range: VCC (opr) = 2 to 5.5 V Pin and function compatible with 74F521 Pin Assignment TC74AC521P TC74AC521F Weight DIP20-P-300-2.54A SOP20-P-300-1.27A : 1.30 g (typ.) : 0.22 g (typ.) 1 2007-10-01 IEC Logic Symbol Truth Table Inputs P, Q G P=Q L P≠Q L XH Output P=Q L H H X: Don’t care System Diagram TC74AC521P/F 2 2007-10-01 Absolute Maximum Ratings (Note 1) TC74AC521P/F Characteristics Symbol...