CY54/74FCT240T CY54/74FCT244T 8-Bit Buffers/Line Drivers SCCS017 - May 1994 - Revised February 2000 Features • Sink current Source current • Function, pinout, and drive compatible with FCT and F logic • FCT-D speed at 3.6 ns max. (Com’l FCT244 only), FCT-C speed at 4.1 ns max. (Com’l), FCT-A speed at 4.8 ns max. (Com’l) • Reduced VOH (typically = 3.3V) versions of equivalent FCT functions • Edge-rate control circuitry for significantly improved noise characteristics • Power-off disable feature • ESD > 2000V • Matched rise and fall times • Fully compatible with TTL input and output logic levels • Extended commercial range of −40˚C to +85˚C 64 mA (Com’l), 48 mA (Mil) 32 mA (Com’l), 12 mA (Mil) Functional Description The FCT240T and FCT244T are octal buffers and line drivers designed to be employed as memory address drivers, clock drivers, and bus-oriented transmitters/receivers. The devices provide speed and drive capabilities equivalent to their fastest bipolar logic counterparts while reducing power consumption. The input and output voltage levels allow direct interface with TTL, NMOS, and CMOS devices without external components. The outputs are designed with a power-off disable feature to allow for live insertion of boards. Logic Block Diagram FCT240T FCT244T OEA OEA OEB DA0 OA0 OB0 DB0 DA1 OA1 OB1 DB1 DA2 OA2 OB2 DB2 DA3 OA3 OB3 DB3 OEB DA0 OA0 OB0 DB0 DA1 OA1 OB1 DB1 DA2 OA2 OB2 DB2 DA3 OA3 DB3 OB3 FCT240T–1 FCT240T–4 Pin Configurations DIP/SOIC/QSOP Top View OA3 DB2 12 13 GND 7 6 5 4 FCT240T 3 2 1 20 19 OB0 DA0 OEA VCC OEB 14 1516 17 18 OA2 DB 1 OA1 DB 0 OA0 DB3 9 10 11 FCT240T–2 1 20 VCC DA0 2 19 OEB OB0 3 18 OA0 DA1 4 17 DB0 OB3 OB1 5 FCT240T 16 OA1 GND DA2 6 15 DB1 DB3 OB2 7 14 OA2 DA3 8 13 DB2 OB3 9 12 OA3 GND 10 11 DB3 OEA 1 20 VCC DA0 2 19 OEB OB0 3 18 OA0 OB0 DA1 4 17 DB0 DA0 OB1 5 FCT244T 16 OA1 OEA DA2 6 15 DB1 VCC OB2 7 14 OA2 OEB DA3 8 13 DB2 OB3 9 12 OA3 GND 10 11 DB3 DA3 OB 2 DA2 OB 1 DA1 OEA FCT240T–3 DIP/SOIC/QSOP Top View LCC Top View 8 OA3 DB2 9 10 11 7 6 5 4 3 2 1 20 19 FCT244T 12 13 14 1516 17 18 OA2 DB1 OA1 DB0 OA0 8 OB3 OB 1 DA1 DA3 OB 2 DA2 LCC Top View FCT240T–5 Copyright FCT240T–6 © 2000, Texas Instruments Incorporated CY54/74FCT240T CY54/74FCT244T ] ] Function Table FCT240T[1] Function Table FCT244T[1] Inputs Inputs OEA OEB D Output OEA OEB D Output L L H L L H L H X H L Z L L H L L H L H X L H Z Maximum Ratings[2, 3] Power Dissipation .......................................................... 0.5W Static Discharge Voltage............................................>2001V (per MIL-STD-883, Method 3015) (Above which the useful life may be impaired. For user guidelines, not tested.) Operating Range Storage Temperature .................................–65°C to +150°C Ambient Temperature with Power Applied .............................................–65°C to +135°C Range Supply Voltage to Ground Potential ............... –0.5V to +7.0V DC Input Voltage............................................ –0.5V to +7.0V DC Output Voltage ......................................... –0.5V to +7.0V DC Output Current (Maximum Sink Current/Pin).......120 mA Speed Ambient Temperature VCC 0°C to +70°C 5V ± 5% Commercial DT Commercial T, AT, CT –40°C to +85°C 5V ± 5% Military[4] All –55°C to +125°C 5V ± 10% Electrical Characteristics Over the Operating Range Parameter VOH Description Output HIGH Voltage Test Conditions Min. Typ.[5] Max. Unit VCC=Min., IOH=–32 mA Com’l 2.0 VCC=Min., IOH=–15 mA Com’l 2.4 3.3 V V VCC=Min., IOH=–12 mA Mil 2.4 3.3 V VCC=Min., IOL=64 mA Com’l VCC=Min., IOL=48mA Mil VOL Output LOW Voltage 0.3 0.55 V VIH Input HIGH Voltage 0.3 0.55 V VIL Input LOW Voltage VH Hysteresis[6] All inputs 0.2 VIK Input Clamp Diode Voltage VCC=Min., IIN=–18 mA –0.7 –1.2 V II Input HIGH Current VCC=Max., VIN=VCC 5 µA IIH Input HIGH Current VCC=Max., VIN=2.7V ±1 µA IIL Input LOW Current VCC=Max., VIN=0.5V ±1 µA IOZH Off State HIGH-Level Output Current VCC = Max., VOUT = 2.7V 10 µA IOZL Off State LOW-Level Output Current VCC = Max., VOUT = 0.5V –10 µA IOS Output Short Circuit Current[7] VCC=Max., VOUT=0.0V –225 mA IOFF Power-Off Disable VCC=0V, VOUT=4.5V ±1 µA 2.0 V 0.8 –60 –120 V V Notes: 1. H = HIGH Voltage Level. L = LOW Voltage Level. X = Don’t Care. 2. Unless otherwise noted, these limits are over the operating free-air temperature range. 3. Unused inputs must always be connected to an appropriate logic voltage level, preferably either VCC or ground. 4. TA is the “instant on” case temperature. 5. Typical values are at VCC=5.0V, TA=+25˚C ambient. 6. This parameter is specified but not tested. 7. Not more than one output should be shorted at a time. Duration of short should not exceed one second. The use of high-speed test apparatus and/or sample and hold techniques are preferable in order to minimize internal chip heating and more accurately reflect operational values. Otherwise prolonged shorting of a high output may raise the chip temperature well above normal and thereby cause invalid readings in other parametric tests. In any sequence of parameter tests, IOS tests should be performed last. 2 CY54/74FCT240T CY54/74FCT244T ] Capacitance[6] Parameter Description Typ.[5] Max. Unit CIN Input Capacitance 5 10 pF COUT Output Capacitance 9 12 pF Power Supply Characteristics Parameter Description Test Conditions Typ.[5] Max. Unit ICC Quiescent Power Supply Current VCC=Max., VIN≤0.2V, VIN≥VCC–0.2V 0.1 0.2 mA ∆ICC Quiescent Power Supply Current VCC=Max., VIN=3.4V,[8] (TTL inputs) f1=0, Outputs Open 0.5 2.0 mA ICCD Dynamic Power Supply Current[9] VCC=Max., One Input Toggling, 50% Duty Cycle, Outputs Open, OE1=OE2=GND, VIN≤0.2V or VIN≥VCC–0.2V 0.06 0.12 mA/MHz IC Total Power Supply Current[10] VCC=Max., 50% Duty Cycle, Outputs Open, One Bit Toggling at f1=10 MHz, OE1=OE2=GND, VIN≤0.2V or VIN≥VCC–0.2V 0.7 1.4 mA VCC=Max., 50% Duty Cycle, Outputs Open, One Bit Toggling at f1=10 MHz, OE1=OE2=GND, VIN=3.4V or VIN=GND 1.0 2.4 mA VCC=Max., 50% Duty Cycle, Outputs Open, Eight Bits Toggling at f1=2.5 MHz, OE1=OE2=GND, VIN≤0.2V or VIN≥VCC–0.2V 1.3 2.6[11] mA VCC=Max., 50% Duty Cycle, Outputs Open, Eight Bits Toggling at f1=2.5 MHz, OE1=OE2=GND, VIN=3.4V or VIN=GND 3.3 10.6[11] mA Notes: 8. Per TTL driven input (VIN=3.4V); all other inputs at VCC or GND. 9. This parameter is not directly testable, but is derived for use in Total Power Supply calculations. = IQUIESCENT + IINPUTS + IDYNAMIC 10. IC IC = ICC+∆ICCDHNT+ICCD(f0/2 + f1N1) ICC = Quiescent Current with CMOS input levels ∆ICC = Power Supply Current for a TTL HIGH input (VIN=3.4V) = Duty Cycle for TTL inputs HIGH DH = Number of TTL inputs at DH NT ICCD = Dynamic Current caused by an input transition pair (HLH or LHL) = Clock frequency for registered devices, otherwise zero f0 = Input signal frequency f1 = Number of inputs changing at f1 N1 All currents are in milliamps and all frequencies are in megahertz. 11. Values for these conditions are examples of the ICC formula. These limits are specified but not tested. 3 CY54/74FCT240T CY54/74FCT244T Switching Characteristics Over the Operating Range FCT240T Military Parameter Description [12] Min. FCT240AT Commercial Max. [12] Min. Max. Military [12] Min. Commercial Max. Min.[12] Max. Unit Fig. No.[13] tPLH tPHL Propagation Delay Data to Input 1.5 9.0 1.5 8.0 1.5 5.1 1.5 4.8 ns 1, 2 tPZH tPZL Output Enable Time 1.5 10.5 1.5 10.0 1.5 6.5 1.5 6.2 ns 1, 7, 8 tPHZ tPLZ Output Disable Time 1.5 10.0 1.5 9.5 1.5 5.9 1.5 5.6 ns 1, 7, 8 FCT240CT Military Parameter Description Commercial Min.[12] Max. Min.[12] Max. Unit Fig. No.[13] tPLH tPHL Propagation Delay Data to Input 1.5 4.7 1.5 4.3 ns 1, 2 tPZH tPZL Output Enable Time 1.5 5.7 1.5 5.0 ns 1, 7, 8 tPHZ tPLZ Output Disable Time 1.5 4.6 1.5 4.5 ns 1, 7, 8 FCT244T Military Parameter Description Min.[12] FCT244AT Commercial Max. Min.[12] Military Commercial Max. Min.[12] Max. Min.[12] Max. Unit Fig. No.[13] tPLH tPHL Propagation Delay Data to Input 1.5 7.0 1.5 6.5 1.5 5.1 1.5 4.6 ns 1, 3 tPZH tPZL Output Enable Time 1.5 8.5 1.5 8.0 1.5 6.5 1.5 6.2 ns 1, 7, 8 tPHZ tPLZ Output Disable Time 1.5 7.5 1.5 7.0 1.5 5.9 1.5 5.6 ns 1, 7, 8 FCT244CT Military Parameter Description FCT244DT Commercial Commercial Min.[12] Max. Min.[12] Max. Min.[12] Max. Unit Fig. No.[13] tPLH tPHL Propagation Delay Data to Input 1.5 4.6 1.5 4.1 1.5 3.6 ns 1, 3 tPZH tPZL Output Enable Time 1.5 6.5 1.5 5.8 1.5 4.8 ns 1, 7, 8 tPHZ tPLZ Output Disable Time 1.5 5.7 1.5 5.2 1.5 4.0 ns 1, 7, 8 Notes: 12. Minimum limits are specified but not tested on Propagation Delays. 13. See “Parameter Measurement Information” in the General Information section. 4 CY54/74FCT240T CY54/74FCT244T Ordering Information—FCT240T Speed (ns) 4.3 4.8 5.1 8.0 9.0 Ordering Code Package Name Package Type CY74FCT240CTSOC/SOCT S5 20-Lead (300-Mil) Molded SOIC CY74FCT240CTQCT Q5 20-Lead (150-Mil) QSOP CY74FCT240ATSOC/SOCT S5 20-Lead (300-Mil) Molded SOIC CY74FCT240ATQCT Q5 20-Lead (150-Mil) QSOP CY54FCT240ATDMB D6 20-Lead (300-Mil) CerDIP CY54FCT240ATLMB L61 20-Pin Square Leadless Chip Carrier CY74FCT240TSOC/SOCT S5 20-Lead (300-Mil) Molded SOIC CY74FCT240TQCT Q5 20-Lead (150-Mil) QSOP CY54FCT240TDMB D6 20-Lead (300-Mil) CerDIP Operating Range Commercial Commercial Military Commercial Military Ordering Information—FCT244T Speed (ns) 3.6 Ordering Code Package Name Package Type Operating Range CY74FCT244DTQCT Q5 20-Lead (150-Mil) QSOP CY74FCT244DTSOC/SOCT S5 20-Lead (300-Mil) Molded SOIC CY74FCT244CTSOC/SOCT S5 20-Lead (300-Mil) Molded SOIC CY74FCT244CTQCT Q5 20-Lead (150-Mil) QSOP 4.6 CY54FCT244CTDMB D6 20-Lead (300-Mil) CerDIP Military 4.6 CY74FCT244ATPC P5 20-Lead (300-Mil) Molded DIP Commercial CY74FCT244ATSOC/SOCT S5 20-Lead (300-Mil) Molded SOIC CY74FCT244ATQCT Q5 20-Lead (150-Mil) QSOP CY54FCT244ATDMB D6 20-Lead (300-Mil) CerDIP CY54FCT244ATLMB L61 20-Pin Square Leadless Chip Carrier CY74FCT244TSOC/SOCT S5 20-Lead (300-Mil) Molded SOIC CY74FCT244TQCT Q5 20-Lead (150-Mil) QSOP CY54FCT244TDMB D6 20-Lead (300-Mil) CerDIP CY54FCT244TLMB L61 20-Pin Square Leadless Chip Carrier 4.1 5.1 6.5 7.0 Shaded areas contain preliminary information. Document #: 38-00259-B 5 Commercial Commercial Military Commercial Military CY54/74FCT240T CY54/74FCT244T Package Diagrams 20-Lead (300-Mil) CerDIP D6 MIL-STD-1835 20-Pin Square Leadless Chip Carrier L61 D- 8 Config.A MIL-STD-1835 C-2A 20-Lead (300-Mil) Molded DIP P5 6 CY54/74FCT240T CY54/74FCT244T Package Diagrams (continued) 20-Lead Quarter Size Outline Q5 20-Lead (300-Mil) Molded SOIC S5 7 IMPORTANT NOTICE Texas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue any product or service without notice, and advise customers to obtain the latest version of relevant information to verify, before placing orders, that information being relied on is current and complete. All products are sold subject to the terms and conditions of sale supplied at the time of order acknowledgement, including those pertaining to warranty, patent infringement, and limitation of liability. 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