DM74LS465 (DM81LS95A)/DM74LS466 (DM81LS96A)/ DM74LS467 (DM81LS97A)/DM74LS468 (DM81LS98A) TRI-STATEÉ Octal Buffer General Description These devices provide eight, two-input buffers in each package. All employ the newest low-power-Schottky TTL technology. One of the two inputs to each buffer is used as a control line to gate the output into the high-impedance state, while the other input passes the data through the buffer. The ’LS465 and ’LS467 present true data at the outputs, while the ’LS466 and ’LS468 are inverting. On the ’LS465 and ’LS466 versions, all eight TRI-STATE enable lines are common, with access through a 2-input NOR gate. On the ’LS467 and ’LS468 versions, four buffers are enabled from one common line, and the other four buffers are enabled from another common line. In all cases the outputs are placed in the TRI-STATE condition by applying a high logic level to the enable pins. These devices represent octal, low power-Schottky versions of the very popular DM54/74365, 366, 367, and 368 (DM8095, 96, 97, and 98) TRI-STATE hex buffers. Features Y Y Y Y Octal versions of popular DM74365, 366, 367, and 368 (DM8095, 96, 97 and 98) Typical power dissipation LS465, 467, (LS95A, 97A) 80 mW LS466, 468, (LS96A, 98A) 65 mW Typical propagation delay LS465, 467 (LS95A, 97A) 15 ns LS466, 468 (LS96A, 98A) 10 ns Low power-Schottky, TRI-STATE technology Connection Diagrams Dual-In-Line Packages TL/F/6435 – 1 TL/F/6435 – 2 TL/F/6435 – 3 TL/F/6435 – 4 Order Numbers DM74LS465WM/DM81LS95AWM, DM74LS465N/DM81LS95AN, DM74LS466WM/DM81LS96AWM, DM74LS466N/DM81LS96AN, DM74LS467WM/DM81LS97AWM, DM74LS467N/DM81LS97AN, DM74LS468WM/DM81LS98AWM or DM74LS468N/DM81LS98AN See NS Package Number M20B or N20A TRI-STATEÉ is a registered trademark of National Semiconductor Corporation. C1995 National Semiconductor Corporation TL/F/6435 RRD-B30M105/Printed in U. S. A. DM74LS465 (DM81LS95A)/DM74LS466 (DM81LS96A)/DM74LS467 (DM81LS97A)/ DM74LS468 (DM81LS98A) TRI-STATE Octal Buffer September 1991 Absolute Maximum Ratings (Note) Supply Voltage 7V Input Voltage 7V Operating Free Air Temperature Range DM74LS/DM81LS Storage Temperature Range Note: The ‘‘Absolute Maximum Ratings’’ are those values beyond which the safety of the device cannot be guaranteed. The device should not be operated at these limits. the parametric values defined in the ‘‘Electrical Characteristics’’ table are not guaranteed at the absolute maximum ratings. The ‘‘Recommended Operating Conditions’’ table will define the conditions for actual device operation. 0§ C to a 70§ C b 65§ C to a 150§ C Recommended Operating Conditions Symbol Parameter VCC Supply Voltage VIH High Level Input Voltage VIL Low Level Input Voltage IOH High Level Output Current IOL Low Level Output Current TA Free Air Operating Temperature Min Nom Max 4.75 5 5.25 Units V 2 V 0 0.8 V b 5.2 mA 24 mA 70 §C ’LS465 (’LS95A) and ’LS467 (’LS97A) Electrical Characteristics over recommended operating free air temperature range (unless otherwise noted) Symbol Parameter Conditions Min Typ (Note 1) Max Units b 1.5 V VI Input Clamp Voltage VCC e Min, II e b18 mA VOH High Level Output Voltage VCC e Min, IOH e Max VIL e Max, VIH e Min VOL Low Level Output Voltage VCC e Min, IOL e Max VIL e Max, VIH e Min 0.5 IOL e 12 mA, VCC e Min 0.4 0.1 mA 20 mA II Input Current @ Max Input Voltage VCC e Max, VI e 7V IIH High Level Input Current VCC e Max, VI e 2.7V IIL Low Level Input Current VCC e Max IOZH 2.7 V VI e 0.5V A (Note 3) b 20 VI e 0.4V A (Note 4) b 50 G b 50 V mA Off-State Output Current with High Level Output Voltage Applied VCC e Max, VO e 2.4V VIH e Min, VIL e Max 20 mA Off-State Output Current with Low Level Output Voltage Applied VCC e Max, VO e 0.4V VIH e Min, VIL e Max b 20 mA IOS Short Circuit Output Current VCC e Max (Note 2) b 100 mA ICC Supply Current VCC e Max (Note 3) 26 mA IOZL b 20 16 Note 1: All typicals are at VCC e 5V, TA e 25§ C. Note 2: Not more than one output should be shorted at a time, and the duration should not exceed one second. Note 3: Both G inputs are at 2V. Note 4: Both G inputs are at 0.4V. 2 ’LS465 and ’LS467 Switching Characteristics VCC e 5V, TA e 25§ C RL e 667X Symbol Parameter CL e 50 pF Min CL e 150 pF Max Min Units Max tPLH Propagation Delay Time Low to High Level Output 16 25 ns tPHL Propagation Delay Time High to Low Level Output 28 40 ns tPZH Output Enable Time to High Level Output 25 30 ns tPZL Output Enable Time to Low Level Output 30 42 ns tPHZ Output Disable Time from High Level Output (Note 1) 20 ns tPLZ Output Disable Time from Low Level Output (Note 1) 27 ns Note 1: CL e 5 pF. ’LS466 (’LS96A) and ’LS468 (’LS98A) Electrical Characteristics over recommended operating free air temperature range (unless otherwise noted) Symbol Parameter Conditions Min Typ (Note 2) Max Units b 1.5 V VI Input Clamp Voltage VCC e Min, II e b18 mA VOH High Level Output Voltage VCC e Min, IOH e Max VIL e Max, VIH e Min VOL Low Level Output Voltage VCC e Min, IOL e Max VIL e Max, VIH e Min 0.5 IOL e 12 mA, VCC e Min 0.4 VCC e Max, VI e 7V 0.1 mA 20 mA II Input Current Input Voltage IIH High Level Input Current VCC e Max, VI e 2.7V IIL Low Level Input Current VCC e Max IOZH @ Max 2.7 V VI e 0.5V A (Note 4) b 20 VI e 0.4V A (Note 5) b 50 G b 50 V mA Off-State Output Current with High Level Output Voltage Applied VCC e Max, VO e 2.4V VIH e Min, VIL e Max 20 mA Off-State Output Current with Low Level Output Voltage Applied VCC e Max, VO e 0.4V VIH e Min, VIL e Max b 20 mA IOS Short Circuit Output Current VCC e Max (Note 3) b 100 mA ICC Supply Current VCC e Max (Note 5) 21 mA IOZL b 20 13 Note 2: All typicals are at VCC e 5V, TA e 25§ C. Note 3: Not more than one output should be shorted at a time, and the duration should not exceed one second. Note 4: Both G inputs are at 2V. Note 5: Both G inputs are at 0.4V. 3 ’LS466 and ’LS468 Switching Characteristics for test waveforms and output load. VCC e 5V, TA e 25§ C RL e 667X Symbol Parameter CL e 50 pF Min CL e 150 pF Max Min Units Max tPLH Propagation Delay Time Low to High Level Output 10 16 ns tPHL Propagation Delay Time High to Low Level Output 17 30 ns tPZH Output Enable Time to High Level Output 15 30 ns tPZL Output Enable Time to Low Level Output 35 45 ns tPHZ Output Disable Time from High Level Output (Note 1) 20 ns tPLZ Output Disable Time from Low Level Output (Note 1) 27 ns Note 1: CL e 5 pF. Function Tables LS465 (LS95A) Inputs G1 G2 A H X L L X H L L X X H L LS466 (LS96A) Output Y Inputs Hi-Z Hi-Z H L G1 G2 A H X L L X H L L X X H L LS467 (LS97A) Inputs G A H L L X H L Output Y Hi-Z Hi-Z L H LS468 (LS98A) Output Y Inputs Hi-Z H L H e High Logic Level L e Low Logic Level X e Either High or Low Logic Level Hi-Z e High Impedance (Off) State 4 G A H L L X H L Output Y Hi-Z L H Physical Dimensions inches (millimeters) 20-Lead Wide Small Outline Molded Package (M) Order Numbers DM74LS465WM/DM81LS95AWM, DM74LS466WM/DM81LS96AWM, DM74LS467WM/DM81LS97AWM or DM74LS468WM/DM81LS98AWM NS Package Number M20B 5 DM74LS465 (DM81LS95A)/DM74LS466 (DM81LS96A)/DM74LS467 (DM81LS97A)/ DM74LS468 (DM81LS98A) TRI-STATE Octal Buffer Physical Dimensions inches (millimeters) (Continued) 20-Lead Molded Dual-In-Line Package (N) Order Numbers DM74LS465N/DM81LS95AN, DM74LS466N/DM81LS96AN, DM74LS467N/DM81LS97AN or DM74LS468N/DM81LS98AN NS Package Number N20A 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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