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Part Manufacturer: Toshiba

Part Description: 8-Bit Equality Comparator

Part Details:

TC74ACT521P/F TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic TC74ACT521P,TC74ACT521F 8-Bit Equality Comparator TC74ACT521P The TC74ACT521 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. This device may be used as a level converter for interfacing TTL or NMOS to High Speed CMOS. The inputs are compatible with TTL, NMOS and CMOS output voltage levels. TC74ACT521F 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 Weight · High speed: tpd = 6.4 ns (typ.) at VCC = 5 V DIP20-P-300-2.54A : 1.30 g (typ.) · Low power dissipation: ICC = 8 A (max) at Ta = 25°C SOP20-P-300-1.27A : 0.22 g (typ.) · Compatible with TTL outputs: VIL = 0.8 V (max) VIH = 2.0 V (min) · Symmetrical output impedance: |IOH| = IOL = 24 mA (min) Capability of driving 50 transmission lines. · Balanced propagation delays: tpLH - tpHL · Pin and function compatible with 74F521 Pin Assignment 1 2007-10-01 TC74ACT521P/F IEC Logic Symbol Truth Table Inputs Output P, Q G P = Q P = Q L L P Q L H

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