IDT54/74FCT521T IDT54/74FCT521AT IDT54/74FCT521BT IDT54/74FCT521CT FAST CMOS 8-BIT IDENTITY COMPARATOR Integrated Device Technology, Inc. FEATURES: DESCRIPTION: • • • • The IDT54/74FCT521T/AT/BT/CT 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 1 20 VCC A0 2 3 19 OA=B 18 B7 17 A7 16 B6 15 14 A6 B5 B0 A1 A1 B1 A2 B2 A3 B3 4 P20-1 D20-1 SO20-2 SO20-7 SO20-8 & E20-1 B1 A2 5 B2 A3 7 13 A5 B3 GND 9 12 B4 10 11 A4 6 8 OA=B 2572 drw 02 DIP/SOIC/SSOP/QSOP/CERPACK TOP VIEW A5 B5 INDEX A6 B6 3 2 A7 B7 IA=B 2572 drw 01 A1 4 B1 5 A2 6 B2 A3 7 1 OA=B A4 B4 IA=B I A=B VCC • A0 • B0 • • • 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.) – 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 20 19 18 L20-2 8 17 B7 A7 16 B6 15 A6 14 B5 A5 B4 B3 GND A4 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 1995 Integrated Device Technology, Inc. 6.16 APRIL 1995 DSC-4210/4 1 IDT54/74FCT521T/AT/BT/CT FAST CMOS 8-BIT IDENTITY COMPARATOR MILITARY AND COMMERCIAL TEMPERATURE RANGES ABSOLUTE MAXIMUM RATINGS(1) PIN DESCRIPTION Pin Names Description A0 - A 7 Word A Inputs B0 - B 7 Word B Inputs IA OA =B Expansion or Enable Input (Active LOW) =B Identity Output (Active LOW) Symbol Rating Commercial VTERM(2) Terminal Voltage –0.5 to +7.0 with Respect to GND VTERM(3) Terminal Voltage –0.5 to with Respect to VCC +0.5 GND TA Operating 0 to +70 Temperature TBIAS Temperature –55 to +125 Under Bias TSTG Storage –55 to +125 Temperature PT Power Dissipation 0.5 2572 tbl 01 FUNCTION TABLE(1) Inputs Output IA=B A, B OA=B L L H H A = B* A≠B A = B* A≠B L H H H NOTE: 1. H = HIGH Voltage Level L = LOW Voltage Level *A0 = B0, A1 = B1, A2 = B2, etc. I OUT 2572 tbl 02 Conditions VIN = 0V Typ. 6 VOUT = 0V 8 Max. Unit 10 pF 12 –60 to +120 Unit V –0.5 to VCC +0.5 V –55 to +125 °C –65 to +135 °C –65 to +150 °C 0.5 W –60 to +120 mA 2572 lnk 03 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. 2. Input and VCC terminals only. 3. Outputs and I/O terminals only. CAPACITANCE (TA = +25°C, f = 1.0MHz) Symbol Parameter(1) CIN Input Capacitance COUT Output Capacitance DC Output Current Military –0.5 to +7.0 pF 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 Test Conditions(1) Parameter Min. Typ.(2) Max. Unit VIH Input HIGH Level Guaranteed Logic HIGH Level 2.0 — — V VIL Input LOW Level Guaranteed Logic LOW Level — — 0.8 V II H Input HIGH Current (4) VCC = Max. VI = 2.7V — — ±1 µA II L Input LOW Current (4) VCC = Max. VI = 0.5V — — ±1 µA — — ±1 µA Current (4) II Input HIGH VIK Clamp Diode Voltage VCC = Min., IN = –18mA IOS Short Circuit Current VCC = Max.(3) , VO = GND VOH Output HIGH Voltage VCC = Min. VIN = VIH or VIL VOL Output LOW Voltage VH Input Hysteresis ICC Quiescent Power Supply Current VCC = Max., VI = VCC (Max.) IOH = –6mA MIL. IOH = –8mA COM'L. IOH = –12mA MIL. IOH = –15mA COM'L. IOL = 32mA MIL. IOL = 48mA COM'L. VCC = Min. VIN = VIH or VIL — VCC = Max. VIN = GND or VCC — –0.7 –1.2 V –60 –120 –225 mA 2.4 3.3 — V 2.0 3.0 — V — 0.3 0.5 V — 200 — mV — 0.01 1 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, +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 2572 tbl 05 2 IDT54/74FCT521T/AT/BT/CT FAST CMOS 8-BIT IDENTITY COMPARATOR MILITARY AND COMMERCIAL TEMPERATURE RANGES POWER SUPPLY CHARACTERISTICS Test Conditions(1) Symbol Parameter ∆ICC ICCD Quiescent Power Supply Current TTL Inputs HIGH Dynamic Power Supply Current (4) IC Total Power Supply Current (5) Min. Typ.(2) Max. Unit — 0.5 2.0 mA VIN = VCC VIN = GND — 0.15 0.25 mA/ MHz VIN VIN VIN VIN — 1.5 3.5 mA — 1.8 4.5 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 = VCC = GND = 3.4V = GND 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 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 = 500Ω IDT54/74FCT521T IDT54/74FCT521AT IDT54/74FCT521BT IDT54/74FCT521CT Com'l. Com'l. Com'l. Com'l. Mil. Mil. Mil. 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. 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 6.0 1.5 7.8 1.5 4.6 1.5 6.0 1.5 4.1 1.5 4.5 ns 9.0 1.5 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 SWITCH POSITION TEST CIRCUITS FOR ALL OUTPUTS V CC 7.0V 500Ω VIN Open Drain Disable Low Closed Open All Other Tests 2572 lnk 08 DEFINITIONS: CL= Load capacitance: includes jig and probe capacitance. RT = Termination resistance: should be equal to ZOUT of the Pulse Generator. D.U.T. 50pF RT Switch Enable Low V OUT Pulse Generator Test 500Ω CL 2572 drw 04 SET-UP, HOLD AND RELEASE TIMES DATA INPUT TIMING INPUT ASYNCHRONOUS CONTROL PRESET CLEAR ETC. SYNCHRONOUS CONTROL PRESET CLEAR CLOCK ENABLE ETC. tH tSU tREM tSU PULSE WIDTH 3V 1.5V 0V 3V 1.5V 0V LOW-HIGH-LOW PULSE 1.5V tW 3V 1.5V 0V HIGH-LOW-HIGH PULSE 1.5V 2572 drw 06 3V 1.5V 0V tH 2572 drw 05 PROPAGATION DELAY ENABLE AND DISABLE TIMES ENABLE SAME PHASE INPUT TRANSITION tPLH tPHL OUTPUT tPLH OPPOSITE PHASE INPUT TRANSITION tPHL 3V 1.5V 0V DISABLE 3V CONTROL INPUT 1.5V tPZL VOH 1.5V VOL OUTPUT NORMALLY LOW 3V 1.5V 0V SWITCH CLOSED 3.5V 1.5V tPZH OUTPUT NORMALLY HIGH 2572 drw 07 SWITCH OPEN 0V tPLZ 3.5V 0.3V VOL tPHZ 0.3V 1.5V 0V VOH 0V 2572 drw 08 NOTES: 1. Diagram shown for input Control Enable-LOW and input Control DisableHIGH 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 Temp. Range FCT X Family XXXX X X Device Type Package Process Blank B Commercial MIL-STD-883, Class B P D E L SO P Q Plastic DIP CERDIP CERPACK Leadless Chip Carrier Small Outline IC Shrink Small Outline Package Quarter-size Small Outline Package 521T 521AT 521BT 521CT 8-Bit Comparator Blank High Drive 54 74 –55°C to +125°C 0°C to +70°C 2572 drw 09 6.16 5