54LS253/DM54LS253/DM74LS253 TRI-STATEÉ Data Selectors/Multiplexers General Description Features Each of these Schottky-clamped data selectors/multiplexers contains inverters and drivers to supply fully complementary, on-chip, binary decoding data selection to the AND-OR gates. Separate output control inputs are provided for each of the two four-line sections. The TRI-STATE outputs can interface directly with data lines of bus-organized systems. With all but one of the common outputs disabled (at a high impedance state), the low impedance of the single enabled output will drive the bus line to a high or low logic level. Y Y Y Y Y Y Y Y Y Connection Diagram TRI-STATE version of LS153 with same pinout Schottky-diode-clamped transistors Permit multiplexing from N-lines to one line Performs parallel-to-serial conversion Strobe/output control High fanout totem-pole outputs Typical propagation delay Data to output 12 ns Select to output 21 ns Typical power dissipation 35 mW Alternate Military/Aerospace device (54LS253) is available. Contact a National Semiconductor Sales Office/ Distributor for specifications. Function Table Dual-In-Line Package Select Inputs Data Inputs Output Control Output B A C0 C1 C2 C3 G Y X L L L L H H H H X L L H H L L H H X L H X X X X X X X X X L H X X X X X X X X X L H X X X X X X X X X L H H L L L L L L L L Z L H L H L H L H Address Inputs A and B are common to both sections. H e High Level, L e Low Level, X e Don’t Care, Z e High Impedance (off). TL/F/6416 – 1 Order Number 54LS253DMQB, 54LS253FMQB, 54LS253LMQB, DM54LS253J, DM54LS253W, DM74LS253M or DM74LS253N See NS Package Number E20A, J16A, M16A, N16E or W16A TRI-STATEÉ is a registered trademark of National Semiconductor Corporation. C1995 National Semiconductor Corporation TL/F/6416 RRD-B30M105/Printed in U. S. A. 54LS253/DM54LS253/DM74LS253 TRI-STATE Data Selectors/Multiplexers June 1989 Absolute Maximum Ratings (Note) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/Distributors for availability and specifications. 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. Supply Voltage 7V Input Voltage 7V Operating Free Air Temperature Range b 55§ C to a 125§ C DM54LS and 54LS DM74LS 0§ C to a 70§ C Storage Temperature Range b 65§ C to a 150§ C Recommended Operating Conditions Symbol DM54LS253 Parameter DM74LS253 Units Min Nom Max Min Nom Max 4.5 5 5.5 4.75 5 5.25 V VCC Supply Voltage VIH High Level Input Voltage VIL Low Level Input Voltage 0.7 0.8 V IOH High Level Output Current b1 b 2.6 mA IOL Low Level Output Current 24 mA TA Free Air Operating Temperature 70 §C 2 2 V 12 b 55 125 0 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 Low Level Output Voltage VCC e Min, IOL e Max VIL e Max, VIH e Min DM54 DM74 0.5 IOL e 12 mA, VCC e Min DM74 0.4 VOL DM54 2.4 3.4 DM74 2.4 3.1 V 0.4 V II Input Current @ Max Input Voltage VCC e Max, VI e 7V IIH High Level Input Current VCC e Max, VI e 2.7V 20 mA IIL Low Level Input Current VCC e Max, VI e 0.4V b 0.4 mA IOZH Off-State Output Current with High Level Output Voltage Applied VCC e Max, VO e 2.7V VIH e Min, VIL e Max 20 mA Off-State Output Current with Low Level Output Voltage Applied VCC e Max, VO e 0.4 VIH e Min, VIL e Max b 20 mA Short Circuit Output Current VCC e Max (Note 2) ICC1 Supply Current VCC e Max (Note 3) 7 12 mA ICC2 Supply Current VCC e Max (Note 4) 8.5 14 mA IOZL IOS 0.1 DM54 b 20 b 100 DM74 b 20 b 100 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: ICC1 is measured with all outputs open, and all the inputs grounded. Note 4: ICC2 is measured with the outputs open, OUTPUT CONTROL at 4.5V and all other inputs grounded. 2 mA mA Switching Characteristics at VCC e 5V and TA e 25§ C (See Section 1 for Test Waveforms and Output Load) Symbol Parameter From (Input) To (Output) RL e 667X CL e 45 pF Min Max CL e 150 pF Min Units Max tPLH Propagation Delay Time Low to High Level Output Data to Y 25 35 ns tPHL Propagation Delay Time High to Low Level Output Data to Y 20 30 ns tPLH Propagation Delay Time Low to High Level Output Select to Y 45 54 ns tPHL Propagation Delay Time High to Low Level Output Select to Y 32 44 ns tPZH Output Enable Time to High Level Output Output Control to Y 18 32 ns tPZL Output Enable Time to Low Level Output Output Control to Y 23 35 ns tPHZ Output Disable Time from High Level Output (Note 1) Output Control to Y 41 ns tPLZ Output Disable Time from Low Level Output (Note 1) Output Control to Y 27 ns Note 1: CL e 5 pF. Logic Diagram TL/F/6416 – 2 3 Physical Dimensions inches (millimeters) Ceramic Leadless Chip Carrier Package (E) Order Number 54LS253LMQB NS Package Number E20A 16-Lead Ceramic Dual-In-Line Package (J) Order Number 54LS253DMQB or DM54LS253J NS Package Number J16A 4 Physical Dimensions inches (millimeters) (Continued) 16-Lead Small Outline Molded Package (M) Order Number DM74LS253M NS Package Number M16A 16-Lead Molded Dual-In-Line Package (N) Order Number DM74LS253N NS Package Number N16E 5 54LS253/DM54LS253/DM74LS253 TRI-STATE Data Selectors/Multiplexers Physical Dimensions inches (millimeters) (Continued) 16-Lead Ceramic Flat Package (W) Order Number 54LS253FMQB or DM54LS253W 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. As used herein: 1. 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