鈭?/div>
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
I
OL
= 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 (5碌 A max.)
JEDEC standard pinout for DIP and LCC
Military product compliant to MIL-STD-883, Class B
Available in the following packages:
鈥?/div>
Commercial: SOIC
鈥?/div>
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
I
A = B
also serves as an active low enable input.
FUNCTIONAL BLOCK DIAGRAM
A
0
B
0
A
1
B
1
A
2
B
2
A
3
B
3
A
4
B
4
A
5
B
5
A
6
B
6
A
7
B
7
2
3
4
5
6
7
8
9
19
11
12
O
A=B
13
14
15
16
17
18
1
I
A=B
MILITARY AND COMMERCIAL TEMPERATURE RANGES
1
c
1999 Integrated Device Technology, Inc.
JUNE 2000
DSC-4617/2
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