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| OCTAL BUFFER/LINE DRIVER WITH 3-STATE OUTPUTS The F240, F241 and F244 are octal buffers and line drivers designed to be employed as memory address drivers, clock drivers, and bus-oriented transmitters/receivers which provide improved PC board density. * 3-State Outputs Drive Bus Lines or Buffer Memory Address Registers * Outputs Sink 64 mA * 15 mA Source Current * Input Clamp Diodes Limit High-Speed Termination Effects * ESD > 4000 Volts MC54/74F240 MC54/74F241 MC54/74F244 OCTAL BUFFER/LINE DRIVER WITH 3-STATE OUTPUTS FASTTM SCHOTTKY TTL CONNECTION DIAGRAMS J SUFFIX CERAMIC CASE 732-03 1 MC54/74F240 VCC OEb Ya0 20 19 18 Ib0 17 Ya1 16 Ib1 15 Ya2 14 Ib2 13 Ya3 12 Ib3 11 20 N SUFFIX PLASTIC CASE 738-03 20 1 1 2 3 Yb0 4 Ia1 5 Yb1 6 Ia2 7 Yb2 8 Ia3 9 10 DW SUFFIX SOIC CASE 751D-03 OEa Ia0 Yb3 GND 20 1 VCC OEb Ya0 20 19 18 MC54/74F241 Ib0 Ya1 Ib1 Ya2 17 16 15 14 Ib2 13 Ya3 Ib3 12 11 ORDERING INFORMATION MC54FXXXJ Ceramic MC74FXXXN Plastic MC74FXXXDW SOIC 1 OEa 2 Ia0 3 Yb0 4 Ia1 5 Yb1 6 Ia2 7 Yb2 8 Ia3 9 10 Yb3 GND MC54/74F244 VCC OEb Ya0 Ib0 Ya1 Ib1 Ya2 20 19 18 17 16 15 14 Ib2 13 Ya3 12 Ib3 11 1 OEa 2 Ia0 3 Yb0 4 Ia1 5 Yb1 6 Ia2 7 Yb2 8 Ia3 9 10 Yb3 GND FAST AND LS TTL DATA 4-108 MC54/74F240 * MC54/74F241 * MC54/74F244 FUNCTION TABLE MC54/74F240 Inputs OEa L L H Ia L H X OEb L L H Ib L H X Outputs Ya H L Z Yb H L Z FUNCTION TABLE MC54/74F241 Inputs OEa L L H Ia L H X OEb H H L Ib L H X Outputs Ya L H Z Yb L H Z FUNCTION TABLE MC54/74F244 Inputs OEa Ia L L L H H X OEb Ib L L L H H X Outputs Ya L H Z Yb L H Z H = HIGH Voltage Level; L = LOW Voltage Level; X = Don't Care; Z = High Impedance GUARANTEED OPERATING RANGES Symbol VCC TA Supply Voltage Operating Ambient Temperature Range Parameter 54, 74 54 74 IOH IOL Output Current -- High 54 74 Output Current -- Low 54 74 Min 4.5 -55 0 Typ 5.0 25 25 Max 5.5 125 70 -12 -15 48 64 mA mA Unit V C FAST AND LS TTL DATA 4-109 MC54/74F240 * MC54/74F241 * MC54/74F244 DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified) Limits Symbol VIH VIL VIK VOH Parameter Input HIGH Voltage Input LOW Voltage Input Clamp Diode Voltage Output HIGH Voltage 54, 74 74 54 74 VOL Output LOW Voltage 54 74 IOZH IOZL IIH Output Off Current HIGH Output Off Current LOW Input HIGH Current 2.4 2.7 2.0 2.0 0.55 0.55 50 -50 20 100 IIL Input LOW Current Data Inputs F241, F244 Other IOS Output Short Circuit Current (Note 2) ICCH Power Supply Current HIGH 74 54 F240 F241, F244 ICCL Power Supply Current LOW F240 F241, F244 ICCZ Power Supply Current OFF F240 F241, F244 -100 -100 -1.6 -1.0 -225 -275 35 60 75 90 75 90 mA VCC = MAX mA mA VOUT = GND VCC = MAX mA 3.4 3.4 Min 2.0 0.8 -1.2 Typ Max Unit V V V V V V V V V A A A Test Conditions Guaranteed Input HIGH Voltage Guaranteed Input LOW Voltage IIN = -18 mA IOH = -3.0 mA IOH = -3.0 mA IOH = -12 mA IOH = -15 mA IOL = 48 mA IOL = 64 mA VOUT = 2.7 V VOUT = 0.5 V VIN = 2.7 V VIN = 7.0 V VIN = 0.5 V VCC = MAX VCC = MAX VCC = MAX VCC = MAX VCC = MIN VCC = 4.50 V VCC = 4.75 V VCC = 4.50 V VCC = 4.50 V VCC = MIN NOTES: 1. For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions for the applicable device type. 2. Not more than one output should be shorted at a time, nor for more than 1 second. FAST AND LS TTL DATA 4-110 MC54/74F240 * MC54/74F241 * MC54/74F244 AC CHARACTERISTICS - MC54/74F240 54/74F TA = +25C VCC = +5.0 V CL = 50 pF Symbol tPLH tPHL tPZH tPZL tPHZ tPLZ Output Disable Time Output Enable Time Parameter Propagation Delay, Data to Output Min 2.5 1.5 2.0 4.0 2.0 1.5 Typ 5.1 3.5 3.5 6.9 4.0 6.0 Max 7.0 4.7 5.2 9.0 5.3 8.0 54F TA = -55C to +125C VCC = 5.0 V 10% CL = 50 pF Min 2.5 1.5 2.0 4.0 2.0 2.0 Max 9.0 6.0 6.5 13.5 6.5 12.5 74F TA = 0C to +70C VCC = 5.0 V 10% CL = 50 pF Min 2.5 1.5 2.0 4.0 2.0 1.5 Max 8.0 5.7 5.7 10 6.3 9.5 ns ns Unit ns AC CHARACTERISTICS - MC54/74F241 54/74F TA = +25C VCC = +5.0 V CL = 50 pF Symbol tPLH tPHL tPZH tPZL tPHZ tPLZ Output Disable Time Output Enable Time Parameter Propagation Delay, Data to Output Min 2.5 2.5 2.0 2.0 2.0 2.0 Typ 4.0 4.0 4.3 5.4 4.5 4.5 Max 5.2 5.2 5.7 7.0 6.0 6.5 54F TA = -55C to +125C VCC = 5.0 V 10% CL = 50 pF Min 2.0 2.0 2.0 2.0 2.0 2.0 Max 6.5 7.0 7.0 8.5 7.0 12.5 74F TA = 0C to +70C VCC = 5.0 V 10% CL = 50 pF Min 2.5 2.5 2.0 2.0 2.0 2.0 Max 6.2 6.5 6.7 8.0 7.0 7.5 ns ns Unit ns AC CHARACTERISTICS - MC54/74F244 54/74F TA = +25C VCC = +5.0 V CL = 50 pF Symbol tPLH tPHL tPZH tPZL tPHZ tPLZ Output Disable Time Output Enable Time Parameter Propagation Delay, Data to Output Min 2.5 2.5 2.0 2.0 2.0 2.0 Typ 4.0 4.0 4.3 5.4 4.5 4.5 Max 5.2 5.2 5.7 7.0 6.0 6.0 54F TA = -55C to +125C VCC = 5.0 V 10% CL = 50 pF Min 2.5 2.5 2.0 2.0 2.0 2.0 Max 6.5 7.0 7.0 8.5 7.0 10.0 74F TA = 0C to +70C VCC = 5.0 V 10% CL = 50 pF Min 2.5 2.5 2.0 2.0 2.0 2.0 Max 6.2 6.5 6.7 8.0 7.0 7.0 ns ns Unit ns FAST AND LS TTL DATA 4-111 |
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