IDT54FCT521B [IDT]
FAST CMOS 8-BIT IDENTITY COMPARATOR; FAST的CMOS 8位身份比较器型号: | IDT54FCT521B |
厂家: | INTEGRATED DEVICE TECHNOLOGY |
描述: | FAST CMOS 8-BIT IDENTITY COMPARATOR |
文件: | 总6页 (文件大小:106K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
IDT54/74FCT521
IDT54/74FCT521A
IDT54/74FCT521B
IDT54/74FCT521C
FAST CMOS 8-BIT
IDENTITY COMPARATOR
Integrated Device Technology, Inc.
• Product available in Radiation Tolerant and Radiation
Enhanced versions
• JEDEC standard pinout for DIP and LCC
• Military product compliant to MIL-STD-883, Class B
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
DESCRIPTION:
TheIDT54/74FCT521/A/B/Care8-bitidentitycomparators
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.
• 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
(5µA max.)
FUNCTIONAL BLOCK DIAGRAM
PIN CONFIGURATIONS
IA=B
A0
1
20
19
18
17
16
15
14
13
12
11
VCC
OA=B
B7
A0
B0
2
3
4
B0
A1
A7
P20-1
D20-1
SO20-2
&
A1
B1
B6
B1
A2
5
6
A6
B5
A5
A2
B2
B2
A3
7
E20-1
8
A3
B3
B3
9
B4
A4
GND
10
OA=B
2604 drw 01
A4
B4
DIP/SOIC/CERPACK
TOP VIEW
A5
B5
INDEX
A6
B6
3
2
20 19
1
4
5
6
7
8
18
A1
B1
A2
B7
A7
17
16
15
14
A7
B7
B6
A6
L20-2
IA=B
B2
A3
2604 drw 03
B5
9 10 11 12 13
2604 drw 02
LCC
TOP VIEW
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
FAST is a trademark of National Semiconductor Co.
MILITARY AND COMMERCIAL TEMPERATURE RANGES
MAY 1992
1992 Integrated Device Technology, Inc.
7.16
DSC-4617/2
1
IDT54/74FCT521/A/B/C FAST CMOS
8-BIT IDENTITY COMPARATOR
MILITARY AND COMMERCIAL TEMPERATURE RANGES
PIN DESCRIPTION
FUNCTION TABLE(1)
Pin Names
Description
INPUTS
OUTPUT
A
B
0
- A
- B
7
Word A Inputs
Word B Inputs
A = B
A, B
A = B
O
I
0
7
L
L
H
H
A = B*
A ≠ B
A = B*
A ≠ B
L
H
H
H
IA
=
B
Expansion or Enable Input (Active LOW)
Identity Output (Active LOW)
O
A
=
B
2604 tbl* 05
NOTE:
2604 tbl* 06
1. H = HIGH Voltage Level
L = LOW Voltage Level
*A0 = B0, A1 = B1, A2 = B2, etc.
ABSOLUTE MAXIMUM RATINGS(1)
CAPACITANCE (TA = +25°C, f = 1.0MHz)
Symbol
Rating
Commercial
Military
Unit
Symbol
Parameter(1)
Input
Capacitance
Conditions
IN = 0V
Typ. Max. Unit
(2)
VTERM
Terminal Voltage
with Respect to
GND
–0.5 to +7.0
–0.5 to +7.0
V
C
IN
V
6
10
pF
C
OUT
Output
Capacitance
VOUT = 0V
8
12
pF
(3)
VTERM
Terminal Voltage
with Respect to
GND
–0.5 to VCC
–0.5 to VCC
V
NOTE:
2604 tbl* 02
1. This parameter is measured at characterization but not tested.
TA
Operating
Temperature
Temperature
Under Bias
Storage
0 to +70
–55 to +125
–55 to +125
0.5
–55 to +125
–65 to +135
–65 to +150
0.5
°C
°C
TBIAS
TSTG
PT
°C
Temperature
Power
W
Dissipation
DC Output
Current
IOUT
120
120
mA
NOTES:
2604 tbl* 01
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 +0.5V unless otherwise noted.
2. Input and VCC terminals only.
3. Outputs and I/O terminals only.
7.16
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
Parameter
Input HIGH Level
Test Conditions(1)
Min. Typ.(2) Max.
Unit
VIH
Guaranteed Logic HIGH Level
2.0
—
—
—
—
0.8
5
V
VIL
II H
Input LOW Level
Guaranteed Logic LOW Level
V
Input HIGH Current
VCC = Max.
VI = VCC
VI = 2.7V
VI = 0.5V
VI = GND
—
—
µA
—
—
5(4)
–5(4)
–5
II L
Input LOW Current
—
—
—
—
VIK
IOS
Clamp Diode Voltage
Short Circuit Current
Output HIGH Voltage
VCC = Min., IN = –18mA
VCC = Max.(3), VO = GND
—
–0.7
–120
VCC
VCC
4.3
4.3
GND
–1.2
—
V
mA
V
–60
VHC
VHC
2.4
2.4
—
VOH
VCC = 3V, VIN = VLC or VHC, IOH = –32µA
—
VCC = Min.
IOH = –300µA
—
VIN = VIH or VIL
IOH = –12mA MIL.
IOH = –15mA COM'L.
—
—
VOL
Output LOW Voltage
VCC = 3V, VIN = VLC or VHC, IOL = 300µA
VLC
V
(4)
VCC = Min.
IOL = 300µA
—
GND VLC
VIN = VIH or VIL
IOL = 32mA MIL.
IOL = 48mA COM'L.
—
0.3
0.3
0.5
0.5
—
NOTES:
2604 tbl* 03
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.
7.16
3
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
Parameter
Test Conditions(1)
Min. Typ.(2) Max.
Unit
ICC
Quiescent Power Supply Current
VCC = Max.
VIN ≥ VHC; VIN ≤ VLC
Quiescent Power Supply Current VCC = Max.
TTL Inputs HIGH
VIN = 3.4V(3)
—
0.2
1.5
mA
∆ICC
—
—
0.5
2.0
mA
ICCD
Dynamic Power Supply Current(4) VCC = Max.
VIN ≥ VHC
VIN ≤ VLC
0.15
0.25
mA/
MHz
Outputs Open
One Input Toggling
50% Duty Cycle
VCC = Max.
Outputs Open
fi = 10MHz
One Bit Toggling
50% Duty Cycle
IC
Total Power Supply Current(5)
VIN ≥ VHC
—
—
1.7
2.0
4.0
5.0
mA
VIN ≤ VLC (FCT)
VIN = 3.4V
VIN = GND
NOTES:
2604 tbl* 04
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. 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 Input 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
IDT54/74FCT521
Com'l. Mil.
Min.(2) Max. Min.(2) Max. Min.(2) Max. Min.(2) Max. Min.(2) Max. Min.(2) Max. Min.(2) Max. Min.(2) Max.
IDT54/74FCT521A
IDT54/74FCT521B
IDT54/74FCT521C
Com'l. Mil.
Com'l. Mil.
Com'l. Mil.
Symbol Parameter Condition(1)
Unit
t
t
PLH
PHL
Propagation
Delay
C
L
= 50pF
= 500Ω
1.5 11.0 1.5 15.0 1.5
7.2
1.5
9.5
1.5
5.5
1.5
7.3
1.5
4.5
1.5
5.1
ns
R
L
An or Bn to
OA = B
t
t
PLH
PHL
Propagation
Delay
1.5 10.0 1.5
9.0
1.5
6.0
1.5
7.8
1.5
4.6
1.5
6.0
1.5
4.1
1.5
4.5
ns
IA = B to
OA = B
NOTES:
1. See test circuit and waveforms.
2. Minimum limits are guaranteed but not tested on Propagation Delays.
2604 tbl* 07
7.16
4
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
VCC
SWITCH POSITION
Test
Switch
Closed
Open
7.0V
Open Drain
Disable Low
Enable Low
500Ω
V OUT
VIN
Pulse
Generator
D.U.T.
All Other Tests
50pF
C L
500Ω
DEFINITIONS:
CL = Load capacitance: includes jig and probe capacitance.
2604 tbl 08
RT
RT = Termination resistance: should be equal to ZOUT of the Pulse
Generator.
SET-UP, HOLD AND RELEASE TIMES
PULSE WIDTH
3V
1.5V
0V
DATA
INPUT
tSU
t H
LOW-HIGH-LOW
1.5V
3V
1.5V
0V
TIMING
INPUT
PULSE
t W
ASYNCHRONOUS CONTROL
t REM
PRESET
CLEAR
ETC.
3V
1.5V
0V
HIGH-LOW-HIGH
PULSE
1.5V
SYNCHRONOUS CONTROL
PRESET
CLEAR
CLOCK ENABLE
ETC.
3V
1.5V
0V
tH
t SU
PROPAGATION DELAY
ENABLE AND DISABLE TIMES
ENABLE
DISABLE
3V
3V
CONTROL
INPUT
1.5V
0V
SAME PHASE
INPUT TRANSITION
1.5V
0V
tPZL
tPLZ
tPHL
tPLH
3.5V
1.5V
3.5V
OUTPUT
NORMALLY
LOW
VOH
SWITCH
CLOSED
OUTPUT
1.5V
0.3V
0.3V
VOL
VOH
tPZH
tPHZ
VOL
tPLH
tPHL
OUTPUT
NORMALLY
HIGH
SWITCH
OPEN
3V
1.5V
0V
OPPOSITE PHASE
INPUT TRANSITION
1.5V
0V
0V
NOTES
2604 drw 04
1. Diagram shown for input Control Enable-LOW and input Control
Disable-HIGH.
2. Pulse Generator for All Pulses: Rate ≤ 1.0 MHz; ZO ≤ 50Ω; tF ≤ 2.5ns;
tR ≤ 2.5ns.
7.16
5
IDT54/74FCT521/A/B/C FAST CMOS
8-BIT IDENTITY COMPARATOR
MILITARY AND COMMERCIAL TEMPERATURE RANGES
ORDERING INFORMATION
IDT
XX
FCT
XXXX
X
X
Temp. Range
Device Type
Package
Process
Blank
Commercial
B
MIL-STD-883, Class B
P
Plastic DIP
D
CERDIP
E
CERPACK
L
SO
Leadless Chip Carrier
Small Outline IC
521
8-Bit Comparator
521A
521B
521C
Fast 8-Bit Comparator
Very Fast 8-Bit Comparator
Super Fast 8-Bit Comparator
54
74
–55
°C to +125°C
0°
C to +70°C
2604 cnv* 09
7.16
6
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