DM74LS151 Data Selector/Multiplexer General Description This data selector/multiplexer contains full on-chip decoding to select the desired data source. The 'LS151 selects one-of-eight data sources. The 'LS151 has a strobe input which must be at a low logic level to enable these devices. A high level at the strobe forces the W output high, and the Y output low. The 'LS151 features complementary W and Y outputs. Performs parallel-to-serial conversion Permits multiplexing from N lines to one line Also for use as Boolean function generator Typical average propagation delay time data input to W output 12.5 ns n Typical power dissipation 30 mW n n n n Features n Select one-of-eight data lines Connection Diagram Dual-In-Line Package DS006392-1 Order Number 54LS151DMQB, 54LS151FMQB, 54LS151LMQB, DM54LS151J, DM54LS151W, DM74LS151M or DM74LS151N See Package Number E20A, J16A, M16A, N16E or W16A (c) 1998 Fairchild Semiconductor Corporation DS006392 www.fairchildsemi.com DM74LS151 Data Selector/Multiplexer March 1998 Truth Table Inputs Select Outputs Strobe W C B A S X X X H L H L L L L D0 D0 L L H L D1 D1 L H L L D2 D2 L H H L D3 D3 H L L L D4 D4 H L H L D5 D5 H H L L D6 D6 H H H L D7 D7 H = High Level, L = Low Level, X = Don't Care D0, D1...D7 = the level of the respective D input www.fairchildsemi.com Y 2 Absolute Maximum Ratings (Note 1) Supply Voltage Input Voltage Operating Free Air Temperature Range DM54LS and 54LS DM74LS Storage Temperature Range 7V 7V -55C to +125C 0C to +70C -65C to +150C Recommended Operating Conditions Symbol Parameter DM54LS151 DM74LS151 Units Min Nom Max Min Nom Max 4.5 5 5.5 4.75 5 5.25 VCC Supply Voltage VIH High Level Input Voltage VIL Low Level Input Voltage 0.7 0.8 V IOH High Level Output Current -0.4 -0.4 mA IOL Low Level Output Current 8 mA TA Free Air Operating Temperature 70 C 2 2 V 4 -55 125 V 0 Note 1: 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. Electrical Characteristics over recommended operating free air temperature range (unless otherwise noted) Symbol Parameter Conditions Min Typ Max Units (Note 2) VI Input Clamp Voltage VOH High Level Output Voltage VOL Low Level Output Voltage Input Current @ Max II VCC = Min, II = -18 mA VCC = Min, IOH = Max VIL = Max, VIH = Min VCC = Min, IOL = Max VIL = Max, VIH = Min IOL = 4 mA, VCC = Min -1.5 DM54 2.5 DM74 2.7 3.4 V V 3.4 DM54 0.25 DM74 0.35 0.4 0.5 DM74 0.25 0.4 V VCC = Max, VI = 7V 0.1 VCC = Max, VI = 2.7V VCC = Max, VI = 0.4V VCC = Max 20 A -0.4 mA mA mA Input Voltage IIH High Level Input Current IIL Low Level Input Current IOS Short Circuit Output Current ICC Supply Current (Note 3) VCC = Max (Note 4) DM54 -20 -100 DM74 -20 -100 6 10 mA Note 2: All typicals are at VCC = 5V, TA = 25C. Note 3: Not more than one output should be shorted at a time, and the duration should not exceed one second. Note 4: ICC is measured with all outputs open, strobe and data select inputs at 4.5V, and all other inputs open. Switching Characteristics at VCC = 5V and TA = 25C RL = 2 k From (Input) Symbol Parameter To (output) CL = 15 pF Min tPLH Propagation Delay Time Low to High Level Output tPHL Propagation Delay Time High to Low Level Output tPLH Propagation Delay Time Low to High Level Output Select Max CL = 50 pF Min Units Max 43 46 ns 30 36 ns 23 25 ns (4 Levels) to Y Select (4 Levels) to Y Select (3 Levels) to W 3 www.fairchildsemi.com Switching Characteristics (Continued) at VCC = 5V and TA = 25C RL = 2 k From (Input) Symbol Parameter To (output) CL = 15 pF Min tPHL Propagation Delay Time High to Low Level Output tPLH Propagation Delay Time Low to High Level Output tPHL Propagation Delay Time High to Low Level Output tPLH Propagation Delay Time Low to High Level Output tPHL Propagation Delay Time High to Low Level Output tPLH Propagation Delay Time Low to High Level Output tPHL Propagation Delay Time High to Low Level Output tPLH Propagation Delay Time Low to High Level Output tPHL Propagation Delay Time High to Low Level Output www.fairchildsemi.com Select Max CL = 50 pF Min Units Max 32 40 ns 42 44 ns 32 40 ns 24 27 ns 30 36 ns 32 35 ns 26 33 ns 21 25 ns 20 27 ns (3 Levels) to W Strobe to Y Strobe to Y Strobe to W Strobe to W D0 thru D7 to Y D0 thru D7 to Y D0 thru D7 to W D0 thru D7 to W 4 Logic Diagram LS151 DS006392-2 See Address Buffers to the Right Address Buffers for 54LS151/74LS151 DS006392-3 5 www.fairchildsemi.com Physical Dimensions inches (millimeters) unless otherwise noted Ceramic Leadless Chip Carrier Package (E) Order Number 54LS151LMQB Package Number E20A Ceramic Dual-In-Line Package (J) Order Number 54LS151DMQB or DM54LS151J Package Number J16A www.fairchildsemi.com 6 Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 16-Lead Small Outline Molded Package (M) Order Number DM74LS151M Package Number M16A 16-Lead Molded Dual-In-Line Package (N) Order Number DM74LS151N Package Number N16E 7 www.fairchildsemi.com DM74LS151 Data Selector/Multiplexer Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 16-Lead Ceramic Flat Package (W) Order Number 54LS151FMQB or DM54LS151W Package Number W16A LIFE SUPPORT POLICY FAIRCHILD'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 FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein: 2. A critical component in any component of a life support 1. Life support devices or systems are devices or sysdevice or system whose failure to perform can be reatems which, (a) are intended for surgical implant into sonably expected to cause the failure of the life support the body, or (b) support or sustain life, and (c) whose device or system, or to affect its safety or effectiveness. failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury to the user. Fairchild Semiconductor Corporation Americas Customer Response Center Tel: 1-888-522-5372 www.fairchildsemi.com Fairchild Semiconductor Europe Fax: +49 (0) 1 80-530 85 86 Email: europe.support@nsc.com Deutsch Tel: +49 (0) 8 141-35-0 English Tel: +44 (0) 1 793-85-68-56 Italy Tel: +39 (0) 2 57 5631 Fairchild Semiconductor Hong Kong Ltd. 13th Floor, Straight Block, Ocean Centre, 5 Canton Rd. Tsimshatsui, Kowloon Hong Kong Tel: +852 2737-7200 Fax: +852 2314-0061 National Semiconductor Japan Ltd. Tel: 81-3-5620-6175 Fax: 81-3-5620-6179 Fairchild does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and Fairchild reserves the right at any time without notice to change said circuitry and specifications.