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74F240
54F 74F240 54F 74F241 54F 74F244 Octal Buffers Line Drivers with TRI-STATE Outputs General Description Features The ’F240 ’F241 and ’F244 are octal buffers and line drivers designed to be employed as memory and address drivers clock drivers and bus-oriented transmitters receivers which provide improved PC and board density Y Y Y Y Military 74F240PC Package Number Package Description N20A 54F240DM (Note 2) 20-Lead (0 300 Wide) Molded Dual-In-Line J20A 20-Lead Ceramic Dual-In-Line et Commercial e Y TRI-STATE outputs drive bus lines or buffer memory address registers Outputs sink 64 mA (48 mA mil) 12 mA source current Input clamp diodes limit high-speed termination effects Guaranteed 4000V minimum ESD protection 74F240SC (Note 1) M20B 74F240SJ (Note 1) M20D 20-Lead (0 300 Wide) Molded Small Outline EIAJ W20A 20-Lead Cerpack 54F240FM (Note 2) 54F240LM (Note 2) 20-Lead (0 300 Wide) Molded Small Outline JEDEC 20-Lead Ceramic Leadless Chip Carrier Type C 20-Lead (0 300 Wide) Molded Dual-In-Line bs ol E20A N20A 74F241PC 54F241DM (Note 2) 74F241SJ (Note 1) J20A 20-Lead Ceramic Dual-In-Line M20B 74F241SC (Note 1) 20-Lead (0 300 Wide) Molded Small Outline JEDEC M20D 54F241FM (Note 2) 54F241LM (Note 2) 20-Lead (0 300 Wide) Molded Small Outline EIAJ W20A 20-Lead Cerpack E20A 20-Lead Ceramic Leadless Chip Carrier Type C N20A 20-Lead (0 300 Wide) Molded Dual-In-Line J20A 20-Lead Ceramic Dual-In-Line 74F244SC (Note 1) M20B 20-Lead (0 300 Wide) Molded Small Outline JEDEC 74F244SJ (Note 1) M20D 20-Lead (0 300 Wide) Molded Small Outline EIAJ 74F244MSA (Note 1) MSA20 20-Lead Molded Shrink Small Outline EIAJ Type II W20A 20-Lead Cerpack E20A 20-Lead Ceramic Leadless Chip Carrier Type C 74F244PC 54F244DM (Note 2) O 54F244FM (Note 2) 54F244LM (Note 2) Note 1 Devices also available in 13 reel Use Suffix e SCX SJX and MSAX Note 2 Military grade device with environmental and burn-in processing Use suffix e DMQB FMQB and LMQB TRI-STATE is a registered trademark of National Semiconductor Corporation C1995 National Semiconductor Corporation TL F 9501 RRD-B30M75 Printed in U S A 54F 74F240 54F 74F241 54F 74F244 Octal Buffers Line Drivers with TRI-STATE Outputs May 1995 Unit Loading Fan Out 54F 74F Pin Names Description UL HIGH LOW Input IIH IIL Output IOH IOL OE1 OE2 OE2 I 0 – I7 I0 – I 7 O0 – O7 O0 – O7 TRI-STATE Output Enable Input (Active LOW) TRI-STATE Output Enable Input (Active HIGH) Inputs (’F240) Inputs (’F241 ’F244) Outputs 1 0 1 667 1 0 1 667 1 0 1 667 1 0 2 667 600 106 6 (80) 20 mA b1 mA 20 mA b1 mA 20 mA b1 mA 20 mA b1 6 mA b 12 mA 64 mA (48 mA) Worst-case ’F240 enabled ’F241 ’F244 disabled Truth Tables ’F240 ’F244 D1n O1n OE2 D2n O2n OE1 D1n O1n OE2 D2n O2n H L L X H L Z L H H L L X H L Z L H H L L X H L Z H L H L L X H L Z H L H e HIGH Voltage Level L e LOW Voltage Level X e Immaterial Z e High Impedance ’F241 D1n O1n OE2 D2n O2n H L L X H L Z H L L H H X H L Z H L O bs ol et OE1 e OE1 3
TI
Texas Instruments Incorporated
U.S.A
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