0 High-Speed CMOS 8-Bit QuaLiry Buffers/Line Drivers SEMICONDUCTOR, INC. QS54/74FCT240T QS54/74FCT244T QS54/74FCT2240T QS54/74FCT2244T FEATURES/BENEFITS Pin and function compatible to the 74F240/4 74FCT240/4 and 74ABT240/4 Industrial temperature -40C to 85C * CMOS power levels: <7.5mW static * Available in DIP, SOIC, QSOP, ZIP, HQSOP Undershoot clamp diodes on all inputs TTL-compatible input and output levels Ground bounce controlled outputs * Reduced output swing of 0-3.5V * Military product compliant to MIL-STD-883, Class B FCT-T 240T, 244T JEDEC-FCT spec compatible * Std. thru D speed grades with 3.8ns tpp for D * Io, =64mA Ind., 48mA Mil. FCT-T 2240T, 2244T * Built-in 25Q series resistor outputs.reduce reflection and other system noi Std. thru C speed grades with * Io = 12mA Ind. DESCRIPTION The FCT240T and FCT244T are 8-bit buffers/line drivers with three-state outputs that are ideal for driving high-capacitance loads as in memory ad- dress anddata buses. The FCT2240T and FCT2244T are 250 resistor output versions useful for driving transmission lines and reducing system noise. The 2240 and 2244 series parts can replace the 240/244 series to reduce noise in an existing design. All inputs have clamp diodes for undershoot noise suppres- sion. All outputs have ground bounce suppression (see QSI Application Note AN-001), and outputs will not load an active bus when Vgc, is rem rom the device. Figure.1. Fur ck Diagram FCT240 TEi1) FCT244 TEt1) FCT2240 FCT2244 4A1(2) 41(18) 4A1(2) 41(18) 4A2(4) 4Y2(16) 4A2(4) 42(16) 1A3(6) 43(14) 1A3(6) 43(14) 4A4(8) 44(12) 1A4(8) 44(12) 2G(19) 2G(19) 2A1(11) 2Y1(9) 2A1(11) 2Y1(9) 2A2(13) 2Y2(7) 2A2(13) 2Y2(7) 2A3(15) 2Y3(5) 2A3(15) 2Y3(5) 2A4(17) 2Y4(3) 2A4(17) 2Y4(3) Note: Pin 19 is 2G on the FCT244. MDSL-0001 1-04 QUALITY SEMICONDUCTOR, INC. 1 DECEMBER 28, 1998QS54/74FCT240T, 244T, 2240T, 2244T Figure 2. Pin Configurations (All Pins Top View) PDIP, SOIC, @SOP, HQSOP ZIP __ a iG 1G 1 201] Voc GG? ob tat 1A1 Of2 19] 2G 2V4d3 ab ta2 ova [3 18] 1Y1 2V395 gh 13 1A2 [14 171] 204 vide sb 1A4 2v3 5 1601 1Y2 10> GND 1A3 [6 151] 2A3 2G tt oh aya eye 7 14] 173 2A2 q 18 14D 1Y3 1A4 8 13 2A2 203015 seh tye 2v1 Ha 20 1v4 2nd ish ty1 GND Ef 10 117 2A1 26419 0b Voc Table 1. Pin Description Name VO | Description xA4-xA0 | Data Inputs . xY4-xY0 | O 1G/2G | Table 2. Function Tables FCT240/FCT2240 1G/2G | Input A | Output Y H xX Z L L H L H L FCT244/FCT2244 1G/2G | Input A | Output Y H xX Z L L L L H H 2 QUALITY SEMICONDUCTOR, INC. MDSL-0001 1-04 DECEMBER 28, 1998QS54/74FCT240T, 244T, 2240T, 2244T Table 3. Absolute Maxuimum Ratings Note: Stresses greater than Supply Voltage to Ground 00.0... eee eee ee ereereneees 0.5V to 7.0V those listed under ABSOLUTE DC Output Voltage Voyy .ncccccccccseccsettscesetsceeteceeees -0.5V to 7.0V | MAXIMUM RATINGS may DG Input Voltage Vij ....eccecceeccececcecceeceeeeceeeeeeeeeeeeesereeeaeenaes -0.5V to 7.0V | cause permanent damage to AC Input Voltage (for a pulse width < 20S) .......0.cccceeeeeeees -3.0V | QS! devices that result in func- DC Input Diode Current with Vi < 0 ......ceeeeceeeceeereeeeeeeeeeteeeetnees 20mA tional or reliability type failures. DC Output Diode Current with Voyp < 0.0... ee eeeeeeeereeeeteteees 50mA DC Output Current Max. Sink Current/Pin .........cc cc cceeeeeeeees 120mA Maximum Power Dissipation ............ccccccceeeceeteeeeeseeeeeeeeneees 0.5 watts Tstg Storage Temperature ..0.... eee eeeeeeeneeeees 65 to 150C Table 4. Capacitance Ta = 25C, f = 1MHz, Vin = OV, Vout = OV Pins SOIC Q@soP PDIP ZIP Unit 1,19 4 4 2-9,11-18 8 8 Notes: 1. Capacitance is characterized but not tested. 2. Pin reference for 20-pin package. Table 5. Power Suppl ( haracteristics Syn eter Test Conditions Min | Max | Unit Quiescent Power Voc = Max., freq = 0 _ 1.5 | mA Supply Current OV < Viy S$ 0.2V oF Voc-0.2V < Vin S$ Voc Alec Supply Current per Voc = Max., Viy = 3.4V, freq = 0@ _ 2.0 | mA Input @ TTL HIGH Qeep Supply Current per Voc = Max., Outputs Open and Enabled 0.25 | mA/ Input per MHz One BitToggling @ 50% Duty Cycle MHz Other Inputs at GND or Ve 84) Notes: 1. For conditions shown as Min. or Max., use the appropriate values specified under DC specifications. 2. Per TTL driven input (Vj = 3.4V). 3. For flip-flops, Qacp is measured by switching one of the data input pins so that the output changes every clock cycle. This is ameasurementof device power consumption only and does notinclude power to drive load capacitance or tester capacitance. This parameter is guaranteed by design but not tested. 4. |, can be computed using the above parameters as explained in the Technical Overview section. MDSL-0001 1-04 QUALITY SEMICONDUCTOR, INC. 3 DECEMBER 28, 1998QS54/74FCT240T, 244T, 2240T, 2244T Table 6. DC Electrical Characteristics Over Operating Range Industrial T, = 40C to 85C, Vog = 5.0V +5% Military T, = 55C to 125C, Veg = 5.0V 410% Symbol | Parameter Test Conditions Min | Typ| Max | Unit Vin Input HIGH Voltage Logic HIGH for All Inputs 2.0 Vv Vie Input LOW Voltage Logic LOW for All Inputs 0.8 Vv AV Input Hysteresis Voi Vru for All Inputs 0.2 Vv | tin | Input Current Voc = Max., 0 < Vin < Voc 5 HA Ite | Input HIGH or LOW | loz | Off-State Output Voc = Max., 0 < Vin < Voc 5 HA Current (Hi-Z) los Short Circuit Current = | Vog = Max., Voy = GND@*) 60 mA (FCTXXX) lor Current Drive Voc = Min., Voyz = 2.0V 50 mA (FOT2XXX 250) Vic Input Clamp Voltage Voc = Min., ly =18MA, T, = 25C) Vou Output HIGH Voltage =| Veg = Min. Vo. Output LOW Voltage Vv (FCTXXX) ) 0.55 VoL Output LOW Voltage oe = 12mA (MIL) 0.50 Vv (FCT2XXX 25Q) Io. = 12mA (IND) 0.50 Rout | Output Resistarice cc = Min. Io, = 12mA (MIL) | 25 | | a XX = lo. = 12mA (IND) 20 28 40 s indicate Voc = 5.0V and T, = 25C. 2. Not more than one output should be shorted and the duration is <1 second. 3. These parameters are guaranteed by design but not tested. 4 QUALITY SEMICONDUCTOR, INC. MDSL-0001 1-04 DECEMBER 28, 1998QS54/74FCT240T, 244T, 2240T, 2244T Table 7. FCT240T, FCT2240T Switching Characteristics Over Operating Range Industrial T, = 40C to 85C, Veg = 5.0V +5% Croap = DOPF, Rioap = 5000 unless otherwise noted. Military T, = 55C to 125C, Vog = 5.0V +10% 240A 240C 2240 2240A 2240C 240D Symbol Description Min | Max | Min | Max | Min | Max| Min | Max] Unit teu. Propagation Delay IND 1.5 8 |}15)/48/15)41)15 )38) ns te Ai to Yi (FCT240) MIL 1.5 9 7/1.5)51 ),15) 47) | tp Propagation Delay IND 1.5 8 | 15)/48),15)41!)/ | ] ns tery Ai to Yi (FCT2240) MIL 1.5 9 7/1.5)51 ),15) 47) | tpzH Output Enable Time IND 15) 10 |}15})62;)15)58/15 )56] ns tpz, G to Yi (FCT240) MIL 15 )105)15)65)15)65;/ | tpzy Output Enable Time IND 15) 10 |}15)/62/15)]58)] | |} ns tpz, G to Yi (FCT2240) MIL 15 )105)15)65)15)65;/ | tpyz Output Disable Time IND? |}15 )95)1.5)56 )1.5 | 52 ns tp.z Gto Yi MIL 1.5 | 10 | 1.5] 5.9 | 1.5 ] 5. Table 8. FCT244T, FCT2244- -40C to 85C, Veg CLoap = 5OpF, Ri oap = 5000 unle Industrial T, teristics Over Operating Range Military T, = 55C to 125C, Vog = 5.0V 10% 244 244A 244C 2244 2244A 2244C 244D cription Min | Max | Min| Max | Min | Max] Min | Max] Unit 4 Propagation Delay IND 15 )/65/15)48)15)41)15)3.8) ns teLy Ai to Yi (FCT244) MIL 15 )75 1/15) 51 /15] 46); | tH. Propagation Delay IND 15 )/65 )15)/48/15]41)15)]38)] ns teLy Ai to Yi (FCT2244) MIL 15 )75 1/15) 51 /15] 46); | tpzH Output Enable Time IND 1.5 8 15|)62/)15]58)1.5 | 5.6] ns tpz. G to Yi (FCT244) MIL 15 |/85/15)65/15] 65]; | tpzy Output Enable Time IND 1.5 8 |}15)/62/15)]58)15)56)] ns tpz, G to Yi (FCT2244) MIL 15 |/85/15)65/15] 65]; | tpyz Output Disable Time IND@) 1.5 7 15)/56/1.5)]52)1.5 ) 521] ns tpiz Gto Yi MIL@) 15175115) 59 | 1.5] 5.7] _ Notes: 1. Minimums guaranteed but not tested. 2. This parameter is guaranteed by design but not tested. 3. See Test Circuit and Waveforms. MDSL-0001 1-04 QUALITY SEMICONDUCTOR, INC. 5 DECEMBER 28, 1998