FAST CMOS 8-BIT IDENTITY COMPARATOR
FAST CMOS 8-BIT IDENTITY COMPARATOR
Integrated Device Technology, Inc.
IDT54/74FCT521T IDT54/74FCT521AT IDT54/74FCT521B...
Description
FAST CMOS 8-BIT IDENTITY COMPARATOR
Integrated Device Technology, Inc.
IDT54/74FCT521T IDT54/74FCT521AT IDT54/74FCT521BT IDT54/74FCT521CT
FEATURES:
Std., A, B and C speed grades Low input and output leakage ≤1µA (max.) CMOS power levels True TTL input and output compatibility – VOH = 3.3V (typ.) – VOL = 0.3V (typ.) High drive outputs (-15mA IOH, 48mA IOL) Meets or exceeds JEDEC standard 18 specifications Product available in Radiation Tolerant and Radiation Enhanced versions Military product compliant to MIL-STD-883, Class B and DESC listed (dual marked) Available in DIP, SOIC, SSOP, QSOP, CERPACK and LCC packages
DESCRIPTION:
The IDT54/74FCT521T/AT/BT/CT are 8-bit identity comparators 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
PIN CONFIGURATIONS
IA=B 1 2 3 4 5 6 7 8 9 10 20 19 P20-1 D20-1 SO20-2 SO20-7 SO20-8 & E20-1 18 17 16 15 14 13 12 11 VCC OA=B B7 A7 B6 A6 B5 A5 B4 A4
2572 drw 02
A0 B0 A1 B1 A2 B2 A3 B3 A4 B4 A5 B5 A6 B6 A7 B7 IA=B
2572 drw 01
A0 B0 A1 B1 A2 B2 A3 B3 GND
OA=B
DIP/SOIC/SSOP/QSOP/CERPACK TOP VIEW
3 2 A1 B1 A2 B2 A3 4 5 6 7 8
I A=B VCC
B0
A0
INDEX
1
20 19 18 17 16 15 14
OA=B
B7 A7 B6 A6 B5
L20-2
9 10 11 12 13
B3 GND A4 B4 A5
2572 drw 03
LCC TOP VIEW
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