IDT IDT74FCT521A Fast cmos 8-bit identity comparator Datasheet

IDT54/74FCT521/A/B/C
FAST CMOS 8-BIT IDENTITY COMPARATOR
MILITARY AND COMMERCIAL TEMPERATURE RANGES
FAST CMOS
8-BIT IDENTITY
COMPARATOR
FEATURES:
−
−
−
−
−
−
−
−
−
−
−
−
−
IDT54/74FCT521/A/B/C
DESCRIPTION:
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
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
19
IA=B
O A=B
1
MILITARY AND COMMERCIAL TEMPERATURE RANGES
JUNE 2000
1
c
1999 Integrated Device Technology, Inc.
DSC-4617/2
IDT54/74FCT521/A/B/C
FAST CMOS 8-BIT IDENTITY COMPARATOR
MILITARY AND COMMERCIAL TEMPERATURE RANGES
B0
3
18
B7
4
B1
5
A2
6
B2
17
A7
16
B6
15
A6
7
14
B5
A3
8
13
A5
B3
9
12
B4
10
11
A4
GND
D20-1
SO20-2
E20-1
A1
4
B1
5
A2
6
B2
7
A3
8
3
2
9
Commercial
–0.5 to +7
TSTG
Temperature Under
Bias
Storage Temperature
PT
IOUT
VTERM(3)
TA
TBIAS
10
11
12
18
B7
17
A7
16
B6
15
A6
14
B5
13
LCC
TOP VIEW
ABSOLUTE MAXIMUM RATINGS(1)
Rating
Terminal Voltage
with Respect to GND
Terminal Voltage
with Respect to GND
Operating Temperature
19
L20-2
CERDIP/ SOIC/ CERPACK
TOP VIEW
Symbol
VTERM(2)
20
1
B3
A1
IND EX
O A=B
O A=B
A5
19
V CC
2
B4
A0
IA =B
V CC
A4
20
A0
1
GND
IA=B
B0
PIN CONFIGURATION
Military
–0.5 to +7
PIN DESCRIPTION
Unit
V
–0.5 to VCC
–0.5 to VCC
V
0 to +70
–55 to +125
°C
–55 to +125
–65 to +135
°C
–55 to +125
–65 to +150
°C
Power Dissipation
0.5
0.5
W
DC Output Current
120
120
mA
3. Outputs and I/O terminals only.
CAPACITANCE (TA = +25OC, f = 1.0MHz)
Typ.
6
Max.
10
Unit
pF
COUT
Output
Capacitance
VOUT = 0V
8
12
pF
Word B Inputs
IA = B
Expansion or Enable Input (Active LOW)
OA = B
Identity Output (Active LOW)
(1)
IA = B
A, B
OUTPUT
OA = B
L
L
H
H
A = B*
A≠B
A = B*
A≠B
L
H
H
H
NOTE:
1. H = HIGH Voltage Level
L = LOW Voltage Level
*A0 = B0, A1 = B1, A2 = B2, etc.
2. Input and VCC terminals only.
Conditions
VIN = 0V
Word A Inputs
B0 - B7
INPUTS
NOTES:
1. Stresses greater than those listed under ABSOLUTE MAXIMUM
RATINGS may cause permanent damage to the device. This is a
stress rating only and functional operation of the device at these or
any other conditions above those indicated in the operational sections
of this specification is not implied. Exposure to absolute maximum
rating conditions for extended periods may affect reliability. No
terminal voltage may exceed VCC by +.5V unless otherwise noted.
Parameter(1)
Input Capacitance
Description
FUNCTION TABLE
8-link
Symbol
CIN
Pin Names
A0 - A7
8-link
NOTE:
1. This parameter is measured at characterization but not tested.
2
IDT54/74FCT521/A/B/C
FAST CMOS 8-BIT IDENTITY COMPARATOR
MILITARY AND COMMERCIAL TEMPERATURE RANGES
DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE
Following Conditions Apply Unless Otherwise Specified: VLC = 0.2V; VHC = VCC – 0.2V
Commercial: TA = 0°C to +70°C, VCC = 5.0V ± 5%; Military: TA = –55°C to +125°C, VCC = 5.0V ± 10%
Symbol
VIH
Parameter
Input HIGH Level
Test Conditions(1)
Guaranteed Logic HIGH Level
VIL
Input LOW Level
Guaranteed Logic LOW Level
IIH
Input HIGH Current
VCC = Max.
IIL
Input LOW Current
Min.
2
Typ.(2)
—
Max.
—
Unit
V
—
—
0.8
V
µA
VI = VCC
—
—
5
VI = 2.7V
—
—
5(4)
VI = 0.5V
—
—
–5(4)
VI = GND
—
—
–5
VIK
Clamp Diode Voltage
VCC = Min., IN = –18mA
—
–0.7
–1.2
V
IOS
Short Circuit Current
VCC = Max.(3), VO = GND
–60
–120
—
mA
VOH
Output HIGH Voltage
VCC = 3V, VIN = VLC or VHC, IOH = –32µ A
VHC
VCC
—
V
VCC = Min.
IOH = –300µ A
VHC
VCC
—
VIN = VIH or VIL
IOH = –12mA MIL.
2.4
4.3
—
IOH = –15mA COM'L.
2.4
4.3
—
VCC = 3V, VIN = VLC or VHC, IOL = 300µ A
—
GND
VLC
VCC = Min.
IOL = 300µ A
—
GND
VLC(4)
VIN = VIH or VIL
IOL = 32mA MIL.
—
0.3
0.5
IOL = 48mA COM'L.
—
0.3
0.5
VOL
Output LOW Voltage
NOTES:
1. For conditions shown as Max. or Min., use appropriate value specified under Electrical Characteristics for the applicable device type.
2. Typical values are at VCC = 5.0V, +25°C ambient and maximum loading.
3. Not more than one output should be shorted at one time. Duration of the short circuit test should not exceed one second.
4. This parameter is guaranteed but not tested.
3
V
IDT54/74FCT521/A/B/C
FAST CMOS 8-BIT IDENTITY COMPARATOR
MILITARY AND COMMERCIAL TEMPERATURE RANGES
POWER SUPPLY CHARACTERISTICS
VLC = 0.2V; VHC = VCC - 0.2V
Symbol
ICC
Parameter
Quiescent Power Supply Current
∆ICC
ICCD
Quiescent Power Supply Current TTL
Inputs HIGH
Dynamic Power Supply Current(4)
IC
Total Power Supply Current(5)
Test Conditions(1)
VCC = Max.
VIN ≥ VHC; VIN ≤ VLC
VCC = Max.
VIN = 3.4V(3)
VIN ≥ VHC
VCC = Max.
VIN ≤ VLC
Outputs Open
One Input Toggling
50% Duty Cycle
VIN ≥ VHC
VCC = Max.
VIN ≤ VLC (FCT)
Outputs Open
VIN = 3.4V
fi = 10MHz
One Bit Toggling
VIN = GND
50% Duty Cycle
Min.
—
Typ.(2)
0.2
Max.
1.5
Unit
mA
—
0.5
2
mA
—
0.15
0.25
mA/
MHz
—
1.7
4
mA
—
2
5
NOTES:
1. For conditions shown as Max. or Min., use appropriate value specified under Electrical Characteristics for the applicable device type.
2. Typical values are at VCC = 5.0V, +25°C ambient.
3. Per TTL driven input (VIN = 3.4V); all other inputs at VCC or GND.
4. This parameter is not directly testable, but is derived for use in Total Power Supply calculations.
5. Values for these conditions are examples of the ICC formula. These limits are guaranteed but not tested.
6. IC = IQUIESCENT + IINPUTS + IDYNAMIC
IC = ICC + ∆ICC DHNT + ICCD (fCP/2 + fiNi)
ICC = Quiescent Current
∆ICC = Power Supply Current for a TTL High Input (VIN = 3.4V)
DH = Duty Cycle for TTL Inputs High
NT = Number of TTL Inputs at DH
ICCD = Dynamic Current Caused by an Output Transition Pair (HLH or LHL)
fCP = Clock Frequency for Register Devices (Zero for Non-Register Devices)
fi = Input Frequency
Ni = Number of Inputs at fi
All currents are in milliamps and all frequencies are in megahertz.
SWITCHING CHARACTERISTICS OVER OPERATING RANGE - COMMERCIAL
IDT74FCT521
Symbol
tPLH
tPHL
tPLH
tPHL
Parameter
Propagation Delay
An or Bn to OA = B
Propagation Delay
IA = B to OA = B
Condition(1)
CL = 50pF
RL = 500Ω
Min.(2)
IDT74FCT521A
Max.
Min.(2)
1.5
11
1.5
10
IDT74FCT521B
IDT74FCT521C
Max.
Min.(2)
Max.
Min.(2)
Max.
Unit
1.5
7.2
1.5
5.5
1.5
4.5
ns
1.5
6
1.5
4.6
1.5
4.1
ns
SWITCHING CHARACTERISTICS OVER OPERATING RANGE - MILITARY
IDT54FCT521
Symbol
tPLH
tPHL
tPLH
tPHL
Parameter
Propagation Delay
An or Bn to OA = B
Propagation Delay
IA = B to OA = B
Condition(1)
CL = 50pF
RL = 500Ω
Min.(2)
IDT54FCT521A
Max.
Min.(2)
1.5
15
1.5
9
NOTES:
1. See test circuit and waveforms.
2. Minimum limits are guaranteed but not tested on Propagation Delays.
4
IDT54FCT521B
IDT54FCT521C
Max.
Min.(2)
Max.
Min.(2)
Max.
Unit
1.5
9.5
1.5
7.3
1.5
5.1
ns
1.5
7.8
1.5
6
1.5
4.5
ns
IDT54/74FCT521/A/B/C
FAST CMOS 8-BIT IDENTITY COMPARATOR
MILITARY AND COMMERCIAL TEMPERATURE RANGES
TEST CIRCUITS AND WAVEFORMS
SWITCH POSITION
TEST CIRCUITS FOR ALL OUTPUTS
V CC
Test
7.0V
Switch
Open Drain
500 Ω
Disable Low
V OUT
V IN
Pulse
Generator
D.U.T.
All Other Tests
50pF
R
Closed
Enable Low
T
C
Open
8-link
500 Ω
DEFINITIONS:
CL = Load capacitance: includes jig and probe capacitance.
RT = Termination resistance: should be equal to ZOUT of the Pulse
Generator.
L
O ctal lin k
PULSE WIDTH
SET-UP, HOLD, AND RELEASE TIMES
3V
1.5V
0V
3V
1.5V
0V
DATA
INPUT
tH
t SU
TIM ING
INPUT
ASYNCHRONOUS C ONTROL
PRES ET
CLEAR
ETC.
SYNCHRO NOUS CONTRO L
PRES ET
CLEAR
CLOCK ENABLE
ETC.
t REM
t SU
LO W -HIGH-LOW
PULSE
1.5V
tW
3V
1.5V
0V
HIGH-LOW -HIGH
PULSE
1.5V
3V
1.5V
0V
tH
O ctal lin k
O ctal lin k
PROPAGATION DELAY
ENABLE AND DISABLE TIMES
ENAB LE
SAM E PHASE
INPUT TRANSITION
t PLH
t PH L
OUTPUT
t PLH
OPPOSITE P HASE
INPUT TRANSITION
t PH L
3V
1.5V
0V
DISA BLE
3V
CO NTROL
INPUT
1.5V
t PZL
V OH
1.5V
V OL
OUTPUT
NO RM A LLY
LO W
3V
1.5V
0V
SW ITCH
CLOSE D
O ctal lin k
SW ITCH
OPEN
3.5V
3.5V
1.5V
0.3V
t PZH
OUTPUT
NO RM A LLY
HIGH
0V
t PLZ
V OL
t PHZ
0.3V
V OH
1.5V
0V
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
IDT54/74FCT521/A/B/C
FAST CMOS 8-BIT IDENTITY COMPARATOR
MILITARY AND COMMERCIAL TEMPERATURE RANGES
ORDERING INFORMATION
ID T
XX
Tem p. R ange
FC T
XXXX
XX
X
Device Type
Package
Process
Blank
B
Com mercial
MIL-STD-883, C lass B
SO
Com mercial O ptions
Small O utline IC (SO 20-2)
D
E
L
Military O ptions
CER DIP (D20-1)
CER PAC K (E20-1)
Leadless Chip Carrier (L20-2)
521
521A
521B
521C
Fast C MO S 8-Bit Identity C om parator
54
74
– 55°C to +125°C
– 0°C to +70°C
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