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IDT54/74FCT521/A/B/C FAST CMOS 8-BIT IDENTITY COMPARATOR
MILITARY AND COMMERCIAL TEMPERATURE RANGES
FAST CMOS 8-BIT IDENTITY COMPARATOR
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 (5 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 B0 A1 B1 A2 B2 A3 B3 A4 B4 A5 B5 A6 B6 A7 B7
2 3
4 5
6 7
8 9
19
11 12
OA=B
13 14
15 16
17 18 1
IA=B
MILITARY AND COMMERCIAL TEMPERATURE RANGES
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c 1999 Integrated Device Technology, Inc.
JUNE 2000
DSC-4617/2
IDT54/74FCT521/A/B/C FAST CMOS 8-BIT IDENTITY COMPARATOR
MILITARY AND COMMERCIAL TEMPERATURE RANGES
PIN CONFIGURATION
IA=B A0 B0 A1 B1 A2 B2 A3 B3 GND 1 2 3 4 5 6 7 8 9 10
D20-1 SO20-2 E20-1
B0
19 18 17 16 15 14 13 12 11
OA=B B7 A7 B6 A6 B5 A5 B4 A1 B1 A2 B2 A3
4 5 6 7 8 9 10 11 12 13 L20-2 3 2 1 20 19 18 17 16 15 14
A0
20
VCC
IND EX
VCC
IA=B
OA=B
B7 A7 B6 A6 B5
B3
A4
B4
A4
CERDIP/ SOIC/ CERPACK TOP VIEW
LCC TOP VIEW
ABSOLUTE MAXIMUM RATINGS(1)
Symbol VTERM(2) VTERM(3) TA TBIAS TSTG PT IOUT Rating Terminal Voltage with Respect to GND Terminal Voltage with Respect to GND Operating Temperature Temperature Under Bias Storage Temperature Power Dissipation DC Output Current Commercial -0.5 to +7 -0.5 to VCC 0 to +70 -55 to +125 -55 to +125 0.5 120 Military -0.5 to +7 -0.5 to VCC -55 to +125 -65 to +135 -65 to +150 0.5 120 Unit V V C C C W mA
8-link
PIN DESCRIPTION
Pin Names A0 - A7 B0 - B7 IA = B OA = B Description Word A Inputs Word B Inputs Expansion or Enable Input (Active LOW) Identity Output (Active LOW)
FUNCTION TABLE
INPUTS IA = B L L H H
NOTE: 1. H = HIGH Voltage Level L = LOW Voltage Level *A0 = B0, A1 = B1, A2 = B2, etc.
GND
(1) OUTPUT OA = B L H H H
A, B A = B* AB A = B* AB
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. 2. Input and VCC terminals only. 3. Outputs and I/O terminals only.
CAPACITANCE (TA = +25OC, f = 1.0MHz)
Symbol CIN COUT Parameter(1) Input Capacitance Output Capacitance Conditions VIN = 0V VOUT = 0V Typ. 6 8 Max. 10 12 Unit pF pF
8-link
NOTE: 1. This parameter is measured at characterization but not tested.
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A5
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 = 0C to +70C, VCC = 5.0V 5%; Military: TA = -55C to +125C, VCC = 5.0V 10%
Symbol VIH VIL IIH IIL VIK IOS VOH Parameter Input HIGH Level Input LOW Level Input HIGH Current Input LOW Current Clamp Diode Voltage Short Circuit Current Output HIGH Voltage VCC = Min., IN = -18mA VCC = Max.(3), VO = GND VCC = 3V, VIN = VLC or VHC, IOH = -32 A VCC = Min.
VIN = VIH or VIL
Test Conditions(1) Guaranteed Logic HIGH Level Guaranteed Logic LOW Level VCC = Max. VI = VCC VI = 2.7V VI = 0.5V VI = GND
Min. 2 -- -- -- -- -- -- -60 VHC VHC 2.4 2.4 -- -- -- --
Typ.(2) -- -- -- -- -- -- -0.7 -120 VCC VCC 4.3 4.3 GND GND 0.3 0.3
Max. -- 0.8 5 5(4) -5(4) -5 -1.2 -- -- -- -- -- VLC VLC(4) 0.5 0.5
Unit V V A
V mA V
IOH = -300 A IOH = -12mA MIL. IOH = -15mA COM'L.
VOL
Output LOW Voltage
VCC = 3V, VIN = VLC or VHC, IOL = 300 A VCC = Min. VIN = VIH or VIL IOL = 300 A IOL = 32mA MIL. IOL = 48mA COM'L.
V
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, +25C 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.
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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 ICC ICCD Parameter Quiescent Power Supply Current Quiescent Power Supply Current TTL Inputs HIGH Dynamic Power Supply Current(4) 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 0.5 0.15 Max. 1.5 2 0.25 Unit mA mA mA/ MHz
IC
Total Power Supply Current(5)
-- --
1.7 2
4 5
mA
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, +25C 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 = 500 Min.(2) 1.5 1.5 Max. 11 10 IDT74FCT521A Min.(2) 1.5 1.5 Max. 7.2 6 IDT74FCT521B Min.(2) 1.5 1.5 Max. 5.5 4.6 IDT74FCT521C Min.(2) 1.5 1.5 Max. 4.5 4.1 Unit ns 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 = 500 Min.(2) 1.5 1.5 Max. 15 9 IDT54FCT521A Min.(2) 1.5 1.5 Max. 9.5 7.8 IDT54FCT521B Min.(2) 1.5 1.5 Max. 7.3 6 IDT54FCT521C Min.(2) 1.5 1.5 Max. 5.1 4.5 Unit ns ns
NOTES: 1. See test circuit and waveforms. 2. Minimum limits are guaranteed but not tested on Propagation Delays.
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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 500 V IN Pulse Generator D.U.T. 50pF R
T
SWITCH POSITION
Test Open Drain Disable Low Enable Low All Other Tests Open
8-link
Switch Closed
V OUT
500 C
L
DEFINITIONS: CL = Load capacitance: includes jig and probe capacitance. RT = Termination resistance: should be equal to ZOUT of the Pulse Generator.
O ctal lin k
SET-UP, HOLD, AND RELEASE TIMES
DATA INPUT tSU TIM ING INPUT ASYNCHRONOUS C ONTROL PRES ET CLEAR ETC. SYNCHRO NOUS CONTRO L PRES ET CLEAR CLOCK ENABLE ETC. tREM tH 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 tW HIGH-LOW -HIGH PULSE
O ctal lin k
1.5V
1.5V
tSU
tH
PROPAGATION DELAY
SAM E PHASE INPUT TRANSITION tPLH OUTPUT tPLH OPPOSITE P HASE INPUT TRANSITION tPHL tPHL 3V 1.5V 0V VOH 1.5V VOL 3V 1.5V 0V
O ctal lin k
ENABLE AND DISABLE TIMES
ENAB LE DISA BLE 3V CO NTROL INPUT tPZL OUTPUT NO RM A LLY LO W SW ITCH CLOSE D tPZH OUTPUT NO RM A LLY HIGH SW ITCH OPEN 3.5V 1.5V 0.3V tPHZ 0.3V 1.5V 0V 0V
O ctal lin k
1.5V tPLZ 0V 3.5V VOL VOH
NOTES: 1. Diagram shown for input Control Enable-LOW and input Control Disable-HIGH. 2. Pulse Generator for All Pulses: Rate 1.0MHz; Zo 50; tF 2.5ns; tR 2.5ns.
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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 Device Type XX Package X Process Blank B Com mercial MIL-STD-883, C lass B Com mercial O ptions Small O utline IC (SO 20-2) Military O ptions CER DIP (D20-1) CER PAC K (E20-1) Leadless Chip Carrier (L20-2)
SO
D E L
521 521A 521B 521C
Fast C MO S 8-Bit Identity C om parator
54 74
- 55C to +125C - 0C to +70C
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