Revised March 2000 DM74LS151 1-of-8 Line Data Selector/Multiplexer General Description Features This data selector/multiplexer contains full on-chip decoding to select the desired data source. The DM74LS151 selects one-of-eight data sources. The DM74LS151 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. Select one-of-eight data lines The DM74LS151 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 Typical power dissipation 30 mW Ordering Code: Order Number Package Number Package Description DM74LS151M M16A 16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow DM74LS151SJ M16D 16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide DM74LS151N N16E 16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide Devices also available in Tape and Reel. Specify by appending the suffix letter "X" to the ordering code. Connection Diagram Truth Table Inputs Outputs Select Strobe Y 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 (c) 2000 Fairchild Semiconductor Corporation DS006392 www.fairchildsemi.com DM74LS151 1-of-8 Line Data Selector/Multiplexer August 1986 DM74LS151 Logic Diagrams See Address Buffers Address Buffers www.fairchildsemi.com 2 Supply Voltage 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 tables are not guaranteed at the absolute maximum ratings. The "Recommended Operating Conditions" table will define the conditions for actual device operation. 7V Input Voltage 7V 0C to +70C Operating Free Air Temperature Range -65C to +150C Storage Temperature Range Recommended Operating Conditions Symbol Parameter Min Nom Max 4.75 5 5.25 Units VCC Supply Voltage VIH HIGH Level Input Voltage V VIL LOW Level Input Voltage 0.8 V IOH HIGH Level Output Current -0.4 mA IOL LOW Level Output Current 8 mA TA Free Air Operating Temperature 70 C 2 V 0 Electrical Characteristics over recommended operating free air temperature range (unless otherwise noted) Symbol Parameter Conditions VI Input Clamp Voltage VCC = Min, II = -18 mA VOH HIGH Level VCC = Min, IOH = Max Output Voltage VIL = Max, VIH = Min VOL LOW Level VCC = Min, IOL = Max Output Voltage VIL = Max, VIH = Min Min Typ (Note 2) Max -1.5 2.7 IOL = 4 mA, VCC = Min 3.4 Units V V 0.35 0.5 0.25 0.4 V II Input Current @ Max Input Voltage VCC = Max, VI = 7V 0.1 IIH HIGH Level Input Current VCC = Max, VI = 2.7V 20 A IIL LOW Level Input Current VCC = Max, VI = 0.4V -0.4 mA IOS Short Circuit Output Current VCC = Max (Note 3) -100 mA ICC Supply Current VCC = Max (Note 4) 10 mA -20 6 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. 3 www.fairchildsemi.com DM74LS151 Absolute Maximum Ratings(Note 1) DM74LS151 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 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 (4 Levels) to Y Select (4 Levels) to Y Select (3 Levels) to W Select (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 Max CL = 50 pF Min Units Max 43 46 ns 30 36 ns 23 25 ns 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 DM74LS151 Physical Dimensions inches (millimeters) unless otherwise noted 16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow Package Number M16A 5 www.fairchildsemi.com DM74LS151 Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide Package Number M16D www.fairchildsemi.com 6 DM74LS151 1-of-8 Line Data Selector/Multiplexer Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide Package Number N16E 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. 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 device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and (c) whose 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. www.fairchildsemi.com 7 www.fairchildsemi.com