TC74ACT521P Datasheet, PDF (1/7 Pages) Toshiba Semiconductor – CMOS Digital Integrated Circuit Silicon Monolithic 8-Bit Equality Comparator

TC74ACT521P/F
TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic
TC74ACT521P,TC74ACT521F
8-Bit Equality Comparator
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.
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: t_pd = 6.4 ns (typ.) at V_CC = 5 V
• Low power dissipation: I_CC = 8 μA (max) at Ta = 25°C
• Compatible with TTL outputs: V_IL = 0.8 V (max)
V_IH = 2.0 V (min)
• Symmetrical output impedance: |I_OH| = I_OL = 24 mA (min)
Capability of driving 50 Ω
transmission lines.
• Balanced propagation delays: t_pLH ^∼− t_pHL
• Pin and function compatible with 74F521
Pin Assignment
TC74ACT521P
TC74ACT521F
Weight
DIP20-P-300-2.54A
SOP20-P-300-1.27A
: 1.30 g (typ.)
: 0.22 g (typ.)
1
2007-10-01