IDT54/74FCT521 IDT54/74FCT521A IDT54/74FCT521B IDT54/74FCT521C FAST CMOS 8-BIT IDENTITY COMPARATOR Integrated Device Technology, Inc. FEATURES: DESCRIPTION: The IDT54/74FCT521/A/B/C are 8-bit identity comparators 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 PIN CONFIGURATIONS A0 B0 A2 B2 A3 B3 20 A0 2 3 19 OA=B 18 B7 17 A7 16 B6 15 14 A6 B5 13 A5 4 P20-1 D20-1 SO20-2 & E20-1 VCC B1 A2 5 B2 A3 7 B3 GND 9 12 B4 10 11 A4 6 8 OA=B 2604 drw 01 DIP/SOIC/CERPACK TOP VIEW A5 B5 INDEX A6 B6 3 2 A7 B7 IA=B 1 B0 A1 A1 B1 A4 B4 IA=B A0 IA=B VCC • • • • • IDT54/74FCT521 equivalent to FAST 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 (5µA max.) B0 • • • • • • 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 TM 2604 drw 03 A1 4 B1 5 A2 6 B2 A3 7 1 OA=B 20 19 18 L20-2 8 17 B7 A7 16 B6 15 A6 14 B5 B4 A4 A5 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 1992 Integrated Device Technology, Inc. GND B3 9 10 11 12 13 7.16 MAY 1992 DSC-4617/2 1 IDT54/74FCT521/A/B/C FAST CMOS 8-BIT IDENTITY COMPARATOR MILITARY AND COMMERCIAL TEMPERATURE RANGES FUNCTION TABLE(1) PIN DESCRIPTION Pin Names A0 - A 7 Word A Inputs B0 - B 7 Word B Inputs IA OA INPUTS Description IA =B Expansion or Enable Input (Active LOW) =B Identity Output (Active LOW) =B L L H H 2604 tbl* 05 OUTPUT A, B OA A = B* A≠B A = B* A≠B NOTE: 1. H = HIGH Voltage Level L = LOW Voltage Level *A0 = B0, A1 = B1, A2 = B2, etc. ABSOLUTE MAXIMUM RATINGS(1) =B L H H H 2604 tbl* 06 CAPACITANCE (TA = +25°C, f = 1.0MHz) Symbol Rating Commercial Military Unit VTERM(2) Terminal Voltage with Respect to GND –0.5 to +7.0 –0.5 to +7.0 V VTERM(3) Terminal Voltage with Respect to GND –0.5 to VCC –0.5 to VCC V Symbol Parameter(1) Input CIN Capacitance COUT Output Capacitance Conditions VIN = 0V Typ. 6 Max. 10 Unit pF VOUT = 0V 8 12 pF NOTE: 2604 tbl* 02 1. This parameter is measured at characterization but not tested. TA Operating Temperature 0 to +70 –55 to +125 °C TBIAS Temperature Under Bias –55 to +125 –65 to +135 °C TSTG Storage Temperature –55 to +125 –65 to +150 °C PT Power Dissipation 0.5 0.5 W IOUT DC Output Current 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: V LC = 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% Parameter Input HIGH Level Test Conditions(1) Guaranteed Logic HIGH Level VIL Input LOW Level II H Input HIGH Current Symbol VIH II L Input LOW Current VIK Clamp Diode Voltage IOS Short Circuit Current VOH Output HIGH Voltage VOL Output LOW Voltage Min. 2.0 Typ.(2) — Max. — Unit V Guaranteed Logic LOW Level — — 0.8 V VCC = Max. µA VI = VCC — — 5 VI = 2.7V — — 5(4) VI = 0.5V — — –5(4) VI = GND — — –5 — –0.7 –1.2 V –60 –120 — mA V VCC = Min., IN = –18mA VCC = Max.(3) , VO = GND VCC = 3V, VIN = VLC or VHC, IOH = –32µA VHC VCC — VCC = Min. IOH = –300µA VHC VCC — VIN = VIH or VIL IOH = –12mA MIL. 2.4 4.3 — IOH = –15mA COM'L. 2.4 4.3 — — GND VLC VCC = 3V, VIN = VLC or VHC, IOL = 300µA VCC = Min. IOL = 300µA — GND VLC(4) VIN = VIH or VIL IOL = 32mA MIL. — 0.3 0.5 IOL = 48mA COM'L. — 0.3 0.5 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 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 V 2604 tbl* 03 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 Test Conditions(1) 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) VCC = Max. VIN ≥ VHC; VIN ≤ VLC VCC = Max. VIN = 3.4V(3) VCC = Max. Outputs Open One Input Toggling 50% Duty Cycle VCC = Max. Outputs Open fi = 10MHz One Bit Toggling 50% Duty Cycle Min. — Typ.(2) 0.2 Max. 1.5 Unit mA — 0.5 2.0 mA VIN ≥ VHC VIN ≤ VLC — 0.15 0.25 mA/ MHz VIN ≥ VHC VIN ≤ VLC (FCT) VIN = 3.4V VIN = GND — 1.7 4.0 mA — 2.0 5.0 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. 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. 2604 tbl* 04 SWITCHING CHARACTERISTICS OVER OPERATING RANGE IDT54/74FCT521 Com'l. Symbol Mil. IDT54/74FCT521A IDT54/74FCT521B IDT54/74FCT521C Com'l. Com'l. Com'l. Mil. Mil. Mil. 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. tPLH Propagation CL = 50pF tPHL Delay RL = 500Ω Unit 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 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 An or Bn to OA =B tPLH Propagation tPHL Delay 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 SWITCH POSITION TEST CIRCUITS FOR ALL OUTPUTS VCC 7.0V 500Ω V OUT VIN Pulse Generator D.U.T. 50pF RT 500Ω SET-UP, HOLD AND RELEASE TIMES Closed All Other Tests Open 3V 1.5V 0V tH TIMING INPUT 3V 1.5V 0V LOW-HIGH-LOW PULSE 3V 1.5V 0V HIGH-LOW-HIGH PULSE 1.5V tW t REM PRESET CLEAR ETC. SYNCHRONOUS CONTROL PRESET CLEAR CLOCK ENABLE ETC. Open Drain Disable Low Enable Low PULSE WIDTH DATA INPUT ASYNCHRONOUS CONTROL Switch DEFINITIONS: 2604 tbl 08 CL = Load capacitance: includes jig and probe capacitance. RT = Termination resistance: should be equal to ZOUT of the Pulse Generator. CL t SU Test t SU 1.5V 3V 1.5V 0V tH PROPAGATION DELAY ENABLE AND DISABLE TIMES ENABLE DISABLE 3V 3V 1.5V SAME PHASE INPUT TRANSITION t PLH t PHL CONTROL INPUT OUTPUT NORMALLY SWITCH LOW CLOSED t PZH VOL t PLH t PHL OUTPUT SWITCH NORMALLY OPEN HIGH 3V OPPOSITE PHASE INPUT TRANSITION 1.5V 0V t PLZ t PZL 0V VOH 1.5V OUTPUT 1.5V 3.5V 1.5V 3.5V 0.3V V OL t PHZ 0.3V 1.5V 0V V OH 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 Temp. Range FCT XXXX X X Device Type Package Process Blank B Commercial MIL-STD-883, Class B P D E L SO Plastic DIP CERDIP CERPACK Leadless Chip Carrier Small Outline IC 521 521A 521B 521C 8-Bit Comparator 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