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IDT74FCT521CTPYG8 [IDT]

Identity Comparator, FCT Series, 8-Bit, Inverted Output, CMOS, PDSO20, SSOP-20;
IDT74FCT521CTPYG8
型号： IDT74FCT521CTPYG8
厂家： INTEGRATED DEVICE TECHNOLOGY    INTEGRATED DEVICE TECHNOLOGY
描述：

Identity Comparator, FCT Series, 8-Bit, Inverted Output, CMOS, PDSO20, SSOP-20

光电二极管 逻辑集成电路
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IDT74FCT521AT/CT  
FAST CMOS 8-BIT  
IDENTITY COMPARATOR  
FEATURES:  
DESCRIPTION:  
• A and C grades  
• Low input and output leakage ≤1µA (max.)  
• CMOS power levels  
• True TTL input and output compatibility:  
– VOH = 3.3V (typ.)  
The IDT74FCT521T is an 8-bit identity comparator built using an  
advanced dual metal CMOS technology. These devices compare two  
words ofuptoeightbits eachandprovidealowoutputwhenthetwowords  
match bit for bit. The expansion input IA = B also serves as an active low  
enableinput.  
– VOL = 0.3V (typ.)  
• High Drive outputs (-15mA IOH, 48mA IOL)  
• Meets or exceeds JEDEC standard 18 specifications  
• Power off disable outputs permit "live insertion"  
• Available in SOIC, SSOP, and QSOP packages  
FUNCTIONALBLOCKDIAGRAM  
2
A
B
0
0
3
4
5
A
B
1
1
6
7
A
B
2
2
8
9
A
B
3
3
19  
OA=B  
11  
12  
A
B
4
4
13  
14  
A
B
5
5
15  
16  
A
B
6
6
17  
18  
1
A
B
7
7
I
A=B  
TheIDTlogoisaregisteredtrademarkofIntegratedDeviceTechnology,Inc.  
INDUSTRIAL TEMPERATURE RANGE  
OCTOBER 2009  
1
© 2009 Integrated Device Technology, Inc.  
DSC-2572/13  
IDT74FCT521AT/CT  
FASTCMOS8-BITIDENTITYCOMPARATOR  
INDUSTRIALTEMPERATURERANGE  
ABSOLUTEMAXIMUMRATINGS(1)  
PINCONFIGURATION  
Symbol  
Description  
Max  
Unit  
V
(2)  
VTERM  
Terminal Voltage with Respect to GND  
–0.5 to +7  
(3)  
VTERM  
Terminal Voltage with Respect to GND –0.5 to VCC+0.5  
V
20  
19  
18  
17  
16  
15  
14  
13  
12  
11  
1
I
A=B  
V
CC  
TSTG  
IOUT  
Storage Temperature  
DC Output Current  
–65 to +150  
–60 to +120  
° C  
mA  
2
3
4
O
A=B  
A0  
B0  
A1  
B1  
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 +0.5V unless otherwise noted.  
B
7
7
6
6
A
B
A
B
A
B
A
5
2. Inputs and Vcc terminals only.  
3. Output and I/O terminals only.  
A2  
B2  
A3  
B3  
6
5
5
4
4
7
CAPACITANCE (TA = +25°C, F = 1.0MHz)  
8
Symbol  
CIN  
Parameter(1)  
Input Capacitance  
Output Capacitance  
Conditions  
VIN = 0V  
Typ.  
6
Max. Unit  
10  
12  
pF  
pF  
9
COUT  
VOUT = 0V  
8
GND  
10  
NOTE:  
1. This parameter is measured at characterization but not tested.  
SOIC/ SSOP/ QSOP  
TOP VIEW  
PINDESCRIPTION  
Pin Names  
A0 - A7  
B0 - B7  
IA = B  
Description  
Word A Inputs  
Word B Inputs  
Expansion or Enable Input (Active LOW)  
Identity Output (Active LOW)  
OA = B  
FUNCTIONTABLE(1)  
Inputs  
Output  
IA=B  
L
A, B  
OA=B  
L
A = B*  
A≠ B  
A = B*  
A≠ B  
L
H
H
H
H
H
NOTE:  
1. H = HIGH Voltage Level  
L = LOW Voltage Level  
*A0 = B0, A1 = B1, A2 = B2, etc.  
2
IDT74FCT521AT/CT  
FASTCMOS8-BITIDENTITYCOMPARATOR  
INDUSTRIALTEMPERATURERANGE  
DCELECTRICALCHARACTERISTICSOVEROPERATINGRANGE  
FollowingConditionsApplyUnlessOtherwiseSpecified:  
Industrial: TA = –40°C to +85°C, VCC = 5.0V ±5%  
Symbol  
VIH  
VIL  
IIH  
Parameter  
Input HIGH Level  
Test Conditions(1)  
Guaranteed Logic HIGH Level  
Min.  
2
Typ.(2)  
—
Max.  
—
0.8  
1
Unit  
V
Input LOW Level  
Guaranteed Logic LOW Level  
VCC = Max.  
—
—
—
—
—
—
V
Input HIGH Current(4)  
Input LOW Current(4)  
Input HIGH Current(4)  
Clamp Diode Voltage  
Short Circuit Current  
OutputHIGHVoltage  
VI = 2.7V  
VI = 0.5V  
—
µA  
IIL  
VCC = Max.  
—
1
II  
VCC = Max., VI = VCC (Max.)  
VCC = Min., IIN = –18mA  
—
1
µA  
V
VIK  
IOS  
–0.7  
–1.2  
(3)  
VCC = Max., VO = GND  
–60  
2.4  
2
–120  
3.3  
3
–225  
—
mA  
V
VOH  
VCC = Min  
IOH = –8mA  
IOH = –15mA  
VIN = VIH or VIL  
—
VOL  
Output LOWVoltage  
VCC = Min  
IOL = 48mA  
—
0.3  
0.5  
V
VIN = VIH or VIL  
VH  
ICC  
Input Hysteresis  
—
—
—
200  
—
1
mV  
mA  
Quiescent Power Supply Current  
VCC = Max.  
0.01  
VIN = GND or VCC  
NOTES:  
1. For conditions shown as Min. or Max., 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 tested at one time. Duration of the test should not exceed one second.  
4. The test limit for this parameter is ±5µA at TA = –55°C.  
3
IDT74FCT521AT/CT  
FASTCMOS8-BITIDENTITYCOMPARATOR  
INDUSTRIALTEMPERATURERANGE  
POWERSUPPLYCHARACTERISTICS  
Symbol  
Parameter  
Test Conditions(1)  
Min.  
Typ.(2)  
Max.  
Unit  
ΔICC  
Quiescent Power Supply Current  
TTL Inputs HIGH  
VCC = Max.  
VIN = 3.4V  
—
0.5  
2
mA  
(3)  
ICCD  
IC  
Dynamic Power Supply  
Current(4)  
VCC = Max.  
Outputs Open  
One Input Toggling  
50% Duty Cycle  
VIN = VCC  
VIN = GND  
—
0.15  
0.25  
mA/  
MHz  
Total Power Supply Current(6)  
VCC = Max.  
Outputs Open  
fi = 10MHz  
One Bit Toggling  
50% Duty Cycle  
VIN = VCC  
—
—
1.5  
1.8  
3.5  
4.5  
mA  
VIN = GND  
VIN = 3.4V  
VIN = GND  
NOTES:  
1. For conditions shown as Min. or Max., 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 ΔICC formula. These limits are guaranteed but not tested.  
6. IC = IQUIESCENT + IINPUTS + IDYNAMIC  
IC = ICC + ΔICC DHNT + ICCD (fCP/2+ fiNi)  
ICC = Quiescent Current  
ΔICC = 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 = Output Frequency  
Ni = Number of Outputs at fi  
All currents are in milliamps and all frequencies are in megahertz.  
SWITCHINGCHARACTERISTICSOVEROPERATINGRANGE  
74FCT521AT  
74FCT521CT  
Symbol  
tPLH  
Parameter  
PropagationDelay  
Ax or Bx to OA = B  
PropagationDelay  
IA = B to OA = B  
Condition(1)  
CL = 50pF  
RL = 500Ω  
Min.(2)  
Max.  
Min.(2)  
Max.  
Unit  
1.5  
7.2  
1.5  
1.5  
4.5  
ns  
tPHL  
tPLH  
1.5  
6
4.1  
ns  
tPHL  
NOTES:  
1. See test circuit and waveforms.  
2. Minimum limits are guaranteed but not tested on Propagation Delays.  
4
IDT74FCT521AT/CT  
FASTCMOS8-BITIDENTITYCOMPARATOR  
INDUSTRIALTEMPERATURERANGE  
TESTCIRCUITSANDWAVEFORMS  
V
CC  
SWITCHPOSITION  
7.0V  
Test  
Switch  
Closed  
Open  
500W  
Open Drain  
Disable Low  
Enable Low  
V
OUT  
V
IN  
Pulse  
Generator  
D.U.T  
.
All Other Tests  
50pF  
500W  
T
R
DEFINITIONS:  
CL = Load capacitance: includes jig and probe capacitance.  
L
C
RT = Termination resistance: should be equal to ZOUT of the Pulse Generator.  
Octal Link  
Test Circuits for All Outputs  
3V  
DATA  
1.5V  
0V  
INPUT  
LOW-HIGH-LOW  
t
H
tSU  
1.5V  
PULSE  
3V  
1.5V  
0V  
TIMING  
INPUT  
ASYNCHRONOUS CONTROL  
tW  
tREM  
PRESET  
CLEAR  
ETC.  
3V  
1.5V  
0V  
HIGH-LOW-HIGH  
PULSE  
1.5V  
SYNCHRONOUS CONTROL  
PRESET  
3V  
1.5V  
0V  
CLEAR  
tSU  
t
H
CLOCK ENABLE  
ETC.  
Pulse Width  
Octal Link  
Octal Link  
Set-Up, Hold, and Release Times  
ENABLE  
DISABLE  
3V  
1.5V  
0V  
3V  
SAME PHASE  
CONTROL  
INPUT  
1.5V  
0V  
INPUT TRANSITION  
t
PLH  
t
PHL  
PHL  
t
PZL  
tPLZ  
VOH  
OUTPUT  
3.5V  
1.5V  
3.5V  
1.5V  
OUTPUT  
NORMALLY  
LOW  
SWITCH  
CLOSED  
VOL  
tPLH  
t
0.3V  
0.3V  
VOL  
3V  
1.5V  
0V  
tPZH  
tPHZ  
OPPOSITE PHASE  
INPUT TRANSITION  
VOH  
OUTPUT  
NORMALLY  
HIGH  
SWITCH  
OPEN  
1.5V  
0V  
0V  
Octal Link  
Octal Link  
Propagation Delay  
Enable and Disable Times  
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.  
5
IDT74FCT521AT/CT  
FASTCMOS8-BITIDENTITYCOMPARATOR  
INDUSTRIALTEMPERATURERANGE  
ORDERINGINFORMATION  
XXXX  
XX  
X
XX  
FCT  
Package  
Process  
Device Type  
Temp. Range  
Blank  
Industrial  
Small Outline IC - Green  
Shrink Small Outline Package - Green  
Quarter-size Small Outline Package - Green  
SOG  
PYG  
QG  
Fast CMOS 8-Bit Identity Comparator  
521AT  
521CT  
74  
40 C to +85 C  
DatasheetDocumentHistory  
10/03/09 Pg. 6  
Updatedthe orderinginformationbyremovingthe "IDT"notationandnonRoHSpart.  
CORPORATE HEADQUARTERS  
6024 Silver Creek Valley Road  
San Jose, CA 95138  
for SALES:  
for Tech Support:  
logichelp@idt.com  
800-345-7015 or 408-284-8200  
fax: 408-284-2775  
www.idt.com  
6

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