IDT54FCT521CTSOB [IDT]
FAST CMOS 8-BIT IDENTITY COMPARATOR; FAST的CMOS 8位身份比较器
| 型号： | IDT54FCT521CTSOB |
| 厂家： | 
INTEGRATED DEVICE TECHNOLOGY |
| 描述： | FAST CMOS 8-BIT IDENTITY COMPARATOR |
| 文件： | 总5页 (文件大小：104K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
IDT54/74FCT521T
IDT54/74FCT521AT
IDT54/74FCT521BT
IDT54/74FCT521CT
FAST CMOS 8-BIT
IDENTITY COMPARATOR
Integrated Device Technology, Inc.
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.)
DESCRIPTION:
The IDT54/74FCT521T/AT/BT/CT are 8-bit identity com-
parators built using an advanced dual metal CMOS technol-
ogy.Thesedevicescomparetwowordsofuptoeightbitseach
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.
– 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
FUNCTIONAL BLOCK DIAGRAM
PIN CONFIGURATIONS
IA=B
1
20
19
18
17
16
15
14
VCC
OA=B
B7
A0
B0
A0
B0
A1
2
3
4
P20-1
D20-1
SO20-2
SO20-7
SO20-8
&
A7
A1
B1
B6
B1
A2
5
6
A6
B5
A2
B2
B2
A3
7
A5
B4
A4
8
E20-1 13
A3
B3
B3
9
12
11
GND
10
OA=B
2572 drw 02
A4
B4
DIP/SOIC/SSOP/QSOP/CERPACK
TOP VIEW
A5
B5
INDEX
A6
B6
3
2
20 19
1
4
5
6
7
8
18
A1
A7
B7
B7
A7
17
16
15
14
B1
A2
IA=B
B6
A6
L20-2
2572 drw 01
B2
A3
B5
9 10 11 12 13
2572 drw 03
LCC
TOP VIEW
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
MILITARY AND COMMERCIAL TEMPERATURE RANGES
APRIL 1995
1995 Integrated Device Technology, Inc.
6.16
DSC-4210/4
1
IDT54/74FCT521T/AT/BT/CT
FAST CMOS 8-BIT IDENTITY COMPARATOR
MILITARY AND COMMERCIAL TEMPERATURE RANGES
PIN DESCRIPTION
ABSOLUTE MAXIMUM RATINGS(1)
Pin Names
Description
Symbol
Rating
Commercial
Military
Unit
(2)
VTERM
Terminal Voltage
with Respect to
GND
–0.5 to +7.0 –0.5 to +7.0
V
A
B
0
0
- A
- B
7
7
Word A Inputs
Word B Inputs
(3)
I
A
=
B
Expansion or Enable Input (Active LOW)
Identity Output (Active LOW)
VTERM
Terminal Voltage
with Respect to
GND
–0.5 to
VCC +0.5
–0.5 to
VCC +0.5
V
O
A
=
B
2572 tbl 01
TA
Operating
0 to +70
–55 to +125 °C
FUNCTION TABLE(1)
Temperature
Temperature
Under Bias
Storage
Temperature
Power Dissipation
Inputs
Output
TBIAS
TSTG
–55 to +125 –65 to +135 °C
–55 to +125 –65 to +150 °C
A=B
I
A, B
A=B
O
L
L
H
H
A = B*
A ≠ B
A = B*
A ≠ B
L
H
H
H
PT
0.5
0.5
W
IOUT
DC Output
Current
–60 to +120 –60 to +120 mA
NOTE:
1. H = HIGH Voltage Level
L = LOW Voltage Level
2572 tbl 02
2572 lnk 03
NOTES:
1. Stresses greater than those listed under ABSOLUTE MAXIMUM RAT-
INGS may cause permanent damage to the device. This is a stress rating
onlyandfunctionaloperationofthedeviceattheseoranyotherconditions
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.
*A0 = B0, A1 = B1, A2 = B2, etc.
CAPACITANCE (TA = +25°C, f = 1.0MHz)
Symbol
Parameter(1)
Conditions Typ. Max. Unit
CIN
Input
VIN = 0V
6
8
10
pF
Capacitance
Output
2. Input and VCC terminals only.
3. Outputs and I/O terminals only.
COUT
VOUT = 0V
12
pF
Capacitance
2572 lnk 04
NOTE:
1. This parameter is measured at characterization but not tested.
DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE
Following Conditions Apply Unless Otherwise Specified:
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)
Guaranteed Logic HIGH Level
Guaranteed Logic LOW Level
Min. Typ.(2) Max.
Unit
V
V
V
IH
IL
2.0
—
—
—
—
Input LOW Level
0.8
V
I
I
I
I H
I L
Input HIGH Current(4)
Input LOW Current(4)
Input HIGH Current(4)
Clamp Diode Voltage
Short Circuit Current
Output HIGH Voltage
V
V
V
V
V
CC = Max.
V
I
= 2.7V
= 0.5V
—
—
±
±
±
1
1
1
µ
µ
µ
A
A
A
CC = Max.
VI
—
—
I
CC = Max., V
I
= VCC (Max.)
—
—
V
IK
CC = Min., I
CC = Max.(3), V
N
= –18mA
—
–0.7
–1.2
V
IOS
O
= GND
–60
2.4
–120 –225
mA
V
V
OH
VCC = Min.
I
I
I
I
I
I
OH = –6mA MIL.
3.3
3.0
0.3
—
VIN = VIH or VIL
OH = –8mA COM'L.
OH = –12mA MIL.
OH = –15mA COM'L.
OL = 32mA MIL.
2.0
—
—
V
V
V
V
OL
H
Output LOW Voltage
VCC = Min.
0.5
VIN = VIH or VIL
OL = 48mA COM'L.
Input Hysteresis
—
—
—
200
—
1
mV
mA
ICC
Quiescent Power Supply Current
VCC = Max.
0.01
VIN = GND or VCC
NOTES:
2572 tbl 05
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. Not more than one output should be shorted at one time. Duration of the short circuit test should not exceed one second.
4. The test limit for this parameter is ±5µA at TA = -55°C.
6.16
2
IDT54/74FCT521T/AT/BT/CT
FAST CMOS 8-BIT IDENTITY COMPARATOR
MILITARY AND COMMERCIAL TEMPERATURE RANGES
POWER SUPPLY CHARACTERISTICS
Symbol
Parameter
Test Conditions(1)
Min. Typ.(2) Max.
Unit
Quiescent Power Supply
Current TTL
Inputs HIGH
VCC = Max.
VIN = 3.4V(3)
∆ICC
—
—
0.5
2.0
mA
ICCD
IC
Dynamic Power Supply Current(4) VCC = Max.
VIN = VCC
VIN = GND
0.15
0.25
mA/
MHz
Outputs Open
One Input Toggling
50% Duty Cycle
VCC = Max.
Outputs Open
fi = 10MHz
Total Power Supply Current(5)
VIN = VCC
VIN = GND
VIN = 3.4V
VIN = GND
—
—
1.5
1.8
3.5
4.5
mA
One Bit Toggling
50% Duty Cycle
2572 tbl 06
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 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
IDT54/74FCT521T
IDT54/74FCT521AT
IDT54/74FCT521BT
Com'l. Mil.
IDT54/74FCT521CT
Com'l. Mil.
Com'l. Mil.
Com'l. Mil.
Symbol
Parameter
Condition(1) Min.(2) Max. Min.(2) Max. Min.(2) Max. Min.(2) Max. Min.(2) Max. Min.(2) Max. Min.(2) Max. Min.(2) Max. Unit
t
t
PLH
PHL
Propagation
Delay
CL = 50pF
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
RL = 500
Ω
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.
2572 tbl 07
6.16
3
IDT54/74FCT521T/AT/BT/CT
FAST CMOS 8-BIT IDENTITY COMPARATOR
MILITARY AND COMMERCIAL TEMPERATURE RANGES
TEST CIRCUITS AND WAVEFORMS
TEST CIRCUITS FOR ALL OUTPUTS
SWITCH POSITION
Test
Switch
VCC
Open Drain
Disable Low
7.0V
Closed
500Ω
500Ω
Enable Low
VOUT
Open
VIN
All Other Tests
Pulse
Generator
2572 lnk 08
DEFINITIONS:
CL= Load capacitance: includes jig and probe capacitance.
RT = Termination resistance: should be equal to ZOUT of the Pulse
D.U.T.
50pF
C L
Generator.
T
R
2572 drw 04
SET-UP, HOLD AND RELEASE TIMES
PULSE WIDTH
3V
DATA
1.5V
INPUT
0V
3V
1.5V
0V
LOW-HIGH-LOW
PULSE
tH
tSU
1.5V
1.5V
TIMING
INPUT
ASYNCHRONOUS CONTROL
tW
tREM
PRESET
CLEAR
ETC.
3V
1.5V
0V
HIGH-LOW-HIGH
PULSE
SYNCHRONOUS CONTROL
PRESET
2572 drw 06
3V
1.5V
0V
CLEAR
tSU
tH
CLOCK ENABLE
ETC.
2572 drw 05
PROPAGATION DELAY
ENABLE AND DISABLE TIMES
ENABLE
DISABLE
3V
1.5V
0V
3V
SAME PHASE
CONTROL
INPUT
1.5V
0V
INPUT TRANSITION
tPLH
tPHL
tPHL
tPZL
tPLZ
VOH
1.5V
VOL
OUTPUT
3.5V
1.5V
3.5V
VOL
OUTPUT
NORMALLY
LOW
SWITCH
CLOSED
tPLH
0.3V
0.3V
3V
1.5V
0V
tPZH
tPHZ
OPPOSITE PHASE
INPUT TRANSITION
VOH
OUTPUT
NORMALLY
HIGH
SWITCH
OPEN
1.5V
0V
2572 drw 07
0V
2572 drw 08
NOTES:
1. Diagram shown for input Control Enable-LOW and input Control Disable-
HIGH
2. Pulse Generator for All Pulses: Rate ≤ 1.0MHz; tF ≤ 2.5ns; tR ≤ 2.5ns
6.16
4
IDT54/74FCT521T/AT/BT/CT
FAST CMOS 8-BIT IDENTITY COMPARATOR
MILITARY AND COMMERCIAL TEMPERATURE RANGES
ORDERING INFORMATION
IDT
XX
FCT
XXXX
X
X
X
Temp. Range
Device Type
Package
Process
Family
Blank
B
Commercial
MIL-STD-883, Class B
P
Plastic DIP
D
E
CERDIP
CERPACK
L
SO
P
Leadless Chip Carrier
Small Outline IC
Shrink Small Outline Package
Quarter-size Small Outline Package
Q
521T
8-Bit Comparator
521AT
521BT
521CT
Blank
High Drive
54
74
–55°C to +125°C
0°C to +70°C
2572 drw 09
6.16
5
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