54F/74F2244 Octal Buffer/Line Driver with 25X Series Resistors in Outputs General Description Features The ’F2244 is an octal buffer/line driver designed to drive the capacitive inputs of MOS memory drivers, address drivers, clock drivers and bus-oriented transmitters/receivers. The 25X series resistors in the outputs reduce ringing and eliminate the need for external resistors. Y Y Y Y Y Commercial Package Number Military 74F2244PC 54F2244DM (Note 2) 74F2244SC (Note 1) 74F2244MSA (Note 1) TRI-STATEÉ outputs drive bus lines or buffer memory address registers 12 mA source current 25X series resistors in outputs eliminate the need for external resistors. Designed to drive the capacitive inputs of MOS devices Guaranteed 4000V minimum ESD protection Package Description N20B 20-Lead (0.300× Wide) Molded Dual-In-Line J20A 20-Lead Ceramic Dual-In-Line M20B 20-Lead (0.300× Wide) Molded Small Outline JEDEC MSA20 20-Lead Molded Shrink Small Outline EIAJ Type II 54F2244FM (Note 2) W20A 20-Lead Cerpak 54F2244LM (Note 2) E20A 20-Lead Ceramic Leadless Chip Carier, Type C Note 1: Devices also available in 13× reel. Use suffix e SCX and MSAX. Note 2: Military grade device with environmental and burn-in processing. Use suffix e DMQB, FMQB and LMQB. Connection Diagrams Pin Assignment for LCC Pin Assignment for DIP, SOIC and SSOP ’F2244 ’F2244 TL/F/9499 – 3 TL/F/9499 – 4 TRI-STATEÉ is a registered trademark of National Semiconductor Corporation. C1995 National Semiconductor Corporation TL/F/9499 RRD-B30M105/Printed in U. S. A. 54F/74F2244 Octal Buffer/Line Driver with 25X Series Resistors in Outputs August 1995 Logic Symbol IEEE/IEC ’F2244 TL/F/9499 – 6 Unit Loading/Fan Out 54F/74F Pin Names OE1, OE2 OE2 Ian, Ibn Oan,Obn Description U.L. HIGH/LOW Input IIH/IIL Output IOH/IOL TRI-STATE Output Enable Input (Active LOW) TRI-STATE Output Enable Input (Active HIGH) Inputs Outputs 1.0/1.667 1.0/1.667 1.0/2.667* 750/20 20 mA/b1 mA 20 mA/b1 mA 20 mA/b1.6 mA b 15 mA/12 mA *Worst-case ’F2244 disabled Truth Table ’F2244 OE1 Ian Oan OE2 Ibn Obn 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 2 Absolute Maximum Ratings (Note 1) Recommended Operating Conditions If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/Distributors for availability and specifications. Storage Temperature b 65§ C to a 150§ C Ambient Temperature under Bias Junction Temperature under Bias Plastic b 55§ C to a 125§ C Free Air Ambient Temperature Military Commercial b 55§ C to a 125§ C 0§ C to a 70§ C Supply Voltage Military Commercial b 55§ C to a 175§ C b 55§ C to a 150§ C a 4.5V to a 5.5V a 4.5V to a 5.5V VCC Pin Potential to Ground Pin b 0.5V to a 7.0V b 0.5V to a 7.0V Input Voltage (Note 2) b 30 mA to a 5.0 mA Input Current (Note 2) Voltage Applied to Output in HIGH State (with VCC e 0V) b 0.5V to VCC Standard Output b 0.5V to a 5.5V TRI-STATE Output Current Applied to Output in LOW State (Max) twice the rated IOL (mA) ESD Last Passing Voltage (Min) 4000V Note 1: Absolute maximum ratings are values beyond which the device may be damaged or have its useful life impaired. Functional operation under these conditions is not implied. Note 2: Either voltage limit or current limit is sufficient to protect inputs. DC Electrical Characteristics Symbol 54F/74F Parameter Min VIH Input HIGH Voltage VIL Input LOW Voltage VCD Input Clamp Diode Voltage VOH Output HIGH Voltage Typ Units 2.0 54F 10% VCC 54F 10% VCC 74F 10% VCC 74F 10% VCC 74F 5% VCC VCC Conditions Max V Recognized as a HIGH Signal 0.8 V Recognized as a LOW Signal b 1.2 V 2.4 2.0 2.4 2.0 2.7 Min IIN e b18 mA IOH IOH IOH IOH IOH e e e e e b 3 mA b 12 mA b 3 mA b 15 mA b 3 mA V Min 0.50 0.75 V Min IOL e 1 mA IOL e 12 mA VOL Output LOW Voltage IIH Input HIGH Current 54F 74F 20.0 5.0 mA Max VIN e 2.7V IBVI Input HIGH Current Breakdown Test 54F 74F 100 7.0 mA Max VIN e 7.0V ICEX Output HIGH Leakage Current 54F 74F 250 50 mA Max VOUT e VCC VID Input Leakage Test 74F V 0.0 IID e 1.9 mA All other pins grounded IOD Output Leakage Circuit Current 74F 3.75 mA 0.0 VIOD e 150 mV All other pins grounded IIL Input LOW Current b 1.0 b 1.6 mA Max VIN e 0.5V (OE1, OE2, OE2) VIN e 0.5V (In) IOZH Output Leakage Current 50 mA Max VOUT e 2.7V IOZL Output Leakage Current b 50 mA Max VOUT e 0.5V IOS Output Short-Circuit Current b 225 mA Max VOUT e 0V ICCH Power Supply Current 40 60 mA Max VO e HIGH ICCL Power Supply Current 60 90 mA Max VO e LOW ICCZ Power Supply Current 60 90 mA Max VO e HIGH Z 4.75 b 100 3 AC Electrical Characteristics Symbol Parameter Min 74F 54F 74F TA e a 25§ C VCC e a 5.0V CL e 50 pF TA, VCC e Mil CL e 50 pF TA, VCC e Com CL e 50 pF Max Min Max Min Max tPLH tPHL Propagation Delay Data to Output 1.5 2.5 Typ 7.0 8.0 2.0 2.0 6.5 7.0 1.5 2.0 7.0 8.0 tPZH tPZL Output Enable Time 1.5 2.5 9.0 11.5 2.0 2.0 7.0 8.5 1.0 2.5 9.5 12.0 tPHZ tPLZ Output Disable Time 1.5 1.5 9.0 8.5 2.0 2.0 7.0 7.5 1.0 1.5 9.5 9.5 Units ns ns Ordering Information The device number is used to form part of a simplified purchasing code where a package type and temperature range are defined as follows: 74F 2244 S Temperature Range Family 74F e Commercial 54F e Military C X Special Variations QB e Military grade device with environmental and burn-in processing X e Devices shipped in 13× reel Device Type Package Code P e Plastic DIP D e Ceramic DIP S e Small Outline Package (SOIC) MSA e Shrink Small Outline Package SOIC EIAJ Type II (74F244 only) L e Leadless Chip Carrier (LCC) F e Flatpak Temperature Range C e Commercial (0§ C to a 70§ C) M e Military (b55§ C to a 125§ C) 4 5 Physical Dimensions inches (millimeters) 20-Lead Ceramic Leadless Chip Carrier, Type C (L) NS Package Number E20A 20-Lead Ceramic Dual-In-Line Package (D) NS Package Number J20A 6 Physical Dimensions inches (millimeters) (Continued) 20-Lead Molded Shrink Small Outline Package, EIAJ Type II (MSA) NS Package Number MSA20 20-Lead (0.300× Wide) Molded Dual-In-Line Package (P) NS Package Number N20B 7 54F/74F2244 Octal Buffer/Line Driver with 25X Series Resistors in Outputs Physical Dimensions inches (millimeters) (Continued) 20-Lead Cerpak (F) NS Package Number W20A LIFE SUPPORT POLICY NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF NATIONAL SEMICONDUCTOR CORPORATION. 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