IDT74FCT521 Datasheet, PDF (1/6 Pages) Integrated Device Technology – FAST CMOS 8-BIT IDENTITY COMPARATOR

IDT54/74FCT521/A/B/C
FAST CMOS 8-BIT IDENTITY COMPARATOR
FAST CMOS
8-BIT IDENTITY
COMPARATOR
MILITARY AND COMMERCIAL TEMPERATURE RANGES
IDT54/74FCT521/A/B/C
FEATURES:
− IDT54/74FCT521 equivalent to FAST^TM speed
− _{IDT54/74FCT521A 35% faster than FAST}
− _{IDT54/74FCT521B 50% faster than FAST}
− _{IDT54/74FCT521C 60% faster than FAST}
− Equivalent to FAST output drive over full temperature and voltage
supply extremes
− IOL = 48mA (commercial), and 32mA (military)
− CMOS power levels (1mW typ. static)
− TTL input and output level compatible
− CMOS output level compatible
− Substantially lower input current levels than FAST (5µ A max.)
− JEDEC standard pinout for DIP and LCC
− Military product compliant to MIL-STD-883, Class B
− Available in the following packages:
• Commercial: SOIC
• Military: CERDIP, LCC, CERPACK
DESCRIPTION:
The FCT521 is an 8-bit identity comparator built using an advanced dual
metal CMOS technology. These devices compare two words of up to eight
bits each and provide a low output when the two words match bit for bit. The
expansion input IA = B also serves as an active low enable input.
FUNCTIONAL BLOCK DIAGRAM
A0 ²
B0 ³
A1 ⁴
B1 ⁵
A2 ⁶
B2 ⁷
A3 ⁸
B3 ⁹
A4 ¹¹
B4 ¹²
A5 ¹³
B5 ¹⁴
A6 ¹⁵
B6 ¹⁶
A7 ¹⁷
B7 ¹⁸
IA=B ¹
MILITARY AND COMMERCIAL TEMPERATURE RANGES
1
c 1999 Integrated Device Technology, Inc.
19 _OA=B
JUNE 2000
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