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PDF IDT54FCT521 Data sheet ( Hoja de datos )

Número de pieza IDT54FCT521
Descripción FAST CMOS 8-BIT IDENTITY COMPARATOR
Fabricantes Integrated Device Technology 
Logotipo Integrated Device Technology Logotipo



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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 FASTTM 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
c 1999 Integrated Device Technology, Inc.
1
19 OA=B
JUNE 2000
DSC-4617/2

1 page




IDT54FCT521 pdf
IDT54/74FCT521/A/B/C
FAST CMOS 8-BIT IDENTITY COMPARATOR
MILITARY AND COMMERCIAL TEMPERATURE RANGES
TEST CIRCUITS AND WAVEFORMS
TEST CIRCUITS FOR ALL OUTPUTS
V CC
7.0V
Pulse
Generator
V IN
D.U.T.
RT
V OUT
50pF
CL
500
500
O ctal lin k
SWITCH POSITION
Test
Open Drain
Disable Low
Enable Low
All Other Tests
Switch
Closed
Open
DEFINITIONS:
CL = Load capacitance: includes jig and probe capacitance.
RT = Termination resistance: should be equal to ZOUT of the Pulse
Generator.
8-link
SET-UP, HOLD, AND RELEASE TIMES
DATA
INPUT
TIMING
INPUT
tSU tH
ASYNCHRONOUS CONTROL
PRESET
tREM
CLEAR
ETC.
SYNCHRONOUS CONTROL
PRESET
CLEAR
CLOCK ENABLE
tSU tH
ETC.
3V
1.5V
0V
3V
1.5V
0V
3V
1.5V
0V
3V
1.5V
0V
O ctal lin k
PULSE WIDTH
LO W -HIGH-LOW
PULSE
H IG H -L O W -H IG H
PULSE
1.5V
tW
1.5V
O ctal lin k
PROPAGATION DELAY
SAME PHASE
INPUT TRANSITION
OUTPUT
OPPOSITE PHASE
INPUT TRANSITION
tPLH
tPLH
tPHL
tPHL
3V
1.5V
0V
VOH
1.5V
VOL
3V
1.5V
0V
O ctal lin k
ENABLE AND DISABLE TIMES
ENABLE
DISABLE
3V
CONTROL
INPUT
tPZL
tPLZ
1.5V
0V
OUTPUT
NORMALLY
LOW
S W IT C H
CLOSED
tPZH
3.5V
1.5V
tPHZ
3.5V
0.3V VOL
OUTPUT
NORMALLY
HIGH
S W IT C H
OPEN
1.5V
0V
0.3V VOH
0V
O ctal lin k
NOTES:
1. Diagram shown for input Control Enable-LOW and input Control
Disable-HIGH.
2. Pulse Generator for All Pulses: Rate 1.0MHz; Zo 50Ω; tF 2.5ns;
tR 2.5ns.
5

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