TC74HCT688AP_07 Datasheet, PDF (1/7 Pages) Toshiba Semiconductor – 8-Bit Equality Comparator

TC74HCT688AP/AF
TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic
TC74HCT688AP,TC74HCT688AF
8-Bit Equality Comparator
The TC74HCT688A is a high speed CMOS 8-BIT EQUALITY
COMPARATOR fabricated with silicon gate C²MOS technology.
It achieves the high speed operation similar to equivalent
LSTTL 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 leveles.
The TC74HCT688A 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 packege to compare of words greater than 8 bits.
All inputs are equipped with protection circuits against atatic
discharge or transient excess voltage.
Features
• High speed: t_pd = 17 ns (typ.) at V_CC = 5 V
• Low power dissipation: I_CC = 4 μA (max) at Ta = 25°C
• Compatible with TTL outputs: V_IH = 2.0 V (min)
V_IL = 0.8 V (max)
• Output drive capability: 10 LSTTL loads
• Symmetrical output impedance: |I_OH| = I_OL = 4 mA (min)
• Balanced propagation delays: t_pLH ^∼− t_pHL
• Pin and function compatible with 74LS688
Pin Assignment
TC74HCT688AP
TC74HCT688AF
Weight
DIP20-P-300-2.54A
SOP20-P-300-1.27A
: 1.30 g (typ.)
: 0.22 g (typ.)
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2007-10-01