DM54367 Hex TRI-STATEÉ Buffers General Description This device contains six independent gates each of which performs a non-inverting buffer function. The outputs have the TRI-STATE feature. When enabled, the outputs exhibit the low impedance characteristics of a standard TTL output with additional drive capability to permit the driving of bus lines without external resistors. When disabled, both the output transistors are turned off presenting a high-impedance state to the bus line. Thus the output will act neither as a signficant load nor as a driver. To minimize the possibility that two outputs will attempt to take a common bus to opposite logic levels, the disable time is shorter than the enable time of the outputs. Connection Diagram Dual-In-Line Package TL/F/6572 – 1 Order Number DM54367J or DM54367W See NS Package Number J16A or W16A Function Table YeA Input Output G A Y L L H L H X L H Hi-Z H e High Logic Level L e Low Logic Level X e Either Low or High Logic Level Hi-Z e TRI-STATE (Outputs are disabled) TRI-STATEÉ is a registered trademark of National Semiconductor Corporation. C1995 National Semiconductor Corporation TL/F/6572 RRD-B30M105/Printed in U. S. A. DM54367 Hex TRI-STATE Buffers June 1989 Absolute Maximum Ratings (Note) 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. 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Supply Voltage Input Voltage Operating Free Air Temperature Range 7V b 55§ C to a 125§ C Storage Temperature Range b 65§ C to a 150§ C 5.5V Recommended Operating Conditions Symbol DM54367 Parameter Units Min Nom Max 4.5 5 5.5 VCC Supply Voltage VIH High Level Input Voltage V VIL Low Level Input Voltage 0.8 V IOH High Level Output Current b2 mA IOL Low Level Output Current 32 mA TA Free Air Operating Temperature 125 §C 2 V b 55 Electrical Characteristics over recommended operating free air temperature range (unless otherwise noted) Symbol Parameter Conditions Min VI Input Clamp Voltage VCC e Min, II e b12 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 VIH e Min, VIL e Max II Input Current @ Max Input Voltage VCC e Max, VI e 5.5V IIH High Level Input Current VCC e Max, VI e 2.4V IIL Low Level Input Current VCC e Max VI e 0.5V (Note 4) A VCC e Max VI e 0.4V (Note 5) A VCC e Max VI e 0.4V G IOZH 2.4 Typ (Note 1) Max Units b 1.5 V 3.1 0.2 V 0.4 V 1 mA 40 mA b 40 b 1.6 mA b 1.6 Off-State Output Current with High Level Output Voltage Applied VCC e Max, VO e 2.4V VIH e Min, VIL e Max 40 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 40 mA IOS Short Circuit Output Current VCC e Max (Note 2) b 115 mA ICC Supply Current VCC e Max (Note 3) 85 mA IOZL 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. Note 3: ICC is measured with the data inputs grounded and the output controls at 4.5V. Note 4: Both G inputs are at 2V. Note 5: Both G inputs are at 0.4V. 2 b 40 65 Switching Characteristics at VCC e 5V and TA e 25§ C (See Section 1 for Test Waveforms and Output Load) RL e 400X Symbol Parameter CL e 5 pF Min CL e 50 pF Max Min Units Max tPLH Propagation Delay Time Low to High Level Output 16 ns tPHL Propagation Delay Time High to Low Level Output 22 ns tPZH Output Enable Time to High Level Output 35 ns tPZL Output Enable Time to Low Level Output 37 ns tPHZ Output Disable Time from High Level Output 11 ns tPLZ Output Disable Time from Low Level Output 27 ns Physical Dimensions inches (millimeters) 16-Lead Ceramic Dual-In-Line Package (J) Order Number DM54367J NS Package Number J16A 3 DM54367 Hex TRI-STATE Buffers Physical Dimensions inches (millimeters) (Continued) 16-Lead Ceramic Flat Package (W) Order Number DM54367W NS Package Number W16A 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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