DM74LS253N

DM74LS253 3-STATE Data Selector/Multiplexer August 1986 Revised March 2000 DM74LS253 3-STATE Data Selector/Multiplexer 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. ■ 3-STATE version of DM74LS153 with same pinout The 3-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. ■ Strobe/output control ■ Schottky-diode-clamped transistors ■ Permit multiplexing from N-lines to one line ■ Performs parallel-to-serial conversion ■ High fanout totem-pole outputs ■ Typical propagation delay Data to output 12 ns Select to output 21 ns ■ Typical power dissipation 35 mW Ordering Code: Order Number Package Number Package Description DM74LS253M M16A 16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow DM74LS253N 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 Function Table Select Data Inputs Output Inputs Output Control B A C0 C1 C2 C3 G Y X X X X X X H Z L L L X X X L L L L H X X X L H L H X L X X L L L H X H X X L H H L X X L X L L H L X X H X L H H H X X X L L L H H X X X H L H Address Inputs A and B are common to both sections. H = HIGH Level L = LOW Level X = Don't Care Z = High Impedance (OFF) © 2000 Fairchild Semiconductor Corporation DS006416 www.fairchildsemi.com DM74LS253 Logic Diagram 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” table 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 0°C to +70°C Operating Free Air Temperature Range −65°C to +150°C 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 −2.6 mA IOL LOW Level Output Current 24 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 2.4 3.1 Units V V 0.5 IOL = 12 mA, VCC = Min 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 µA IIL LOW Level Input Current VCC = Max, VI = 0.4V −0.4 mA IOZH Off-State Output Current with VCC = Max, VO = 2.7V HIGH Level Output Voltage Applied VIH = Min, VIL = Max 20 µA −20 µA IOZL Off-State Output Current with VCC = Max, VO = 0.4 LOW Level Output Voltage Applied VIH = Min, VIL = Max −20 mA IOS Short Circuit Output Current VCC = Max (Note 3) −100 mA ICC1 Supply Current VCC = Max (Note 4) 7 12 mA ICC2 Supply Current VCC = Max (Note 5) 8.5 14 mA Note 2: All typicals are at VCC = 5V, TA = 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: ICC1 is measured with all outputs OPEN, and all the inputs grounded. Note 5: ICC2 is measured with the outputs OPEN, OUTPUT CONTROL at 4.5V and all other inputs grounded. 3 www.fairchildsemi.com DM74LS253 Absolute Maximum Ratings(Note 1) DM74LS253 Switching Characteristics at VCC = 5V and TA = 25°C RL = 667Ω From (Input) Symbol Parameter To (Output) CL = 45 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 tPZH Output Enable Time to HIGH Level Output tPZL Output Enable Time to LOW Level Output tPHZ Output Disable Time from HIGH Level Output (Note 6) tPLZ Output Disable Time from LOW Level Output (Note 6) CL = 150 pF Min Units Max Data to Y 25 35 ns Data to Y 20 30 ns Select to Y 45 54 ns Select to Y 32 44 ns 18 32 ns 23 35 ns Output Control to Y Output Control to Y Output Control to Y Output Control to Y Note 6: CL = 5 pF. www.fairchildsemi.com Max 4 41 ns 27 ns DM74LS253 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 DM74LS253 3-STATE 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 www.fairchildsemi.com 6