54AC157,54ACT157 54ACT157, 54AC157 Quad 2-Input Multiplexer Literature Number: SNOS089A 54ACT157 * 54AC157 July 28, 2011 Quad 2-Input Multiplexer General Description Features The 'AC/'ACT157 is a high-speed quad 2-input multiplexer. Four bits of data from two sources can be selected using the common Select and Enable inputs. The four outputs present the selected data in the true (noninverted) form. The 'AC/'ACT157 can also be used as a function generator. ICC and IOZ reduced by 50% Outputs source/sink 24 mA 'ACT157 has TTL-compatible inputs Standard Microcircuit Drawing (SMD) --'AC157: 5962-89539 --'ACT157: 5962-89688 Logic Symbols IEEE/IEC 10027201 10027202 Pin Names Description I0a-I0d Source 0 Data Inputs I1a-I1d Source 1 Data Inputs E S Za-Zd Enable Input Select Input Outputs FACTTM is a trademark of Fairchild Semiconductor (c) 2011 National Semiconductor Corporation 100272 100272 Version 2 Revision 3 www.national.com Print Date/Time: 2011/07/28 22:22:43 54ACT157 * 54AC157 Quad 2-Input Multiplexer OBSOLETE 54ACT157 * 54AC157 Connection Diagrams Pin Assignment for DIP and Flatpak Pin Assignment for LCC 10027203 10027204 function generator. The 'AC/'ACT157 can generate any four of the sixteen different functions of two variables with one variable common. This is useful for implementing gating functions. Functional Description The 'AC/'ACT157 is a quad 2-input multiplexer. It selects four bits of data from two sources under the control of a common Select input (S). The Enable input (E) is active-LOW. When E is HIGH, all of the outputs (Z) are forced LOW regardless of all other inputs. The 'AC/'ACT157 is the logic implementation of a 4-pole, 2-position switch where the position of the switch is determined by the logic levels supplied to the Select input. The logic equations for the outputs are shown below: Za = E * (I1a * S + I0a * S) Zb = E * (I1b * S + I0b * S) Zc = E * (I1c * S + I0c * S) Zd = E * (I1d * S + I0d * S) A common use of the 'AC/ACT157 is the moving of data from two groups of registers to four common output busses. The particular register from which the data comes is determined by the state of the Select input. A less obvious use is as a www.national.com Truth Table Inputs Outputs E S I0 I1 Z H L L L L X H H L L X X X L H X L H X X L L H L H H = HIGH Voltage Level L = LOW Voltage Level X = Immaterial 2 100272 Version 2 Revision 3 Print Date/Time: 2011/07/28 22:22:43 54ACT157 * 54AC157 Logic Diagram 10027205 Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays. 3 100272 Version 2 Revision 3 Print Date/Time: 2011/07/28 22:22:43 www.national.com 54ACT157 * 54AC157 Absolute Maximum Ratings (Note 1) Recommended Operating Conditions If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Supply Voltage (VCC) DC Input Diode Current (IIK) VI = -0.5V VI = VCC + 0.5V DC Input Voltage (VI) DC Output Diode Current (IOK) VO = -0.5V VO = VCC + 0.5V DC Output Voltage (VO) DC Output Source or Sink Current (IO) DC VCC or Ground Current per Output Pin (ICC or IGND) Storage Temperature (TSTG) Junction Temperature (TJ) CDIP Supply Voltage (VCC) 'AC 'ACT Input Voltage (VI) Output Voltage (VO) Operating Temperature (TA) 54AC/ACT -0.5V to +7.0V -20 mA +20 mA -0.5V to VCC + 0.5V -20 mA +20 mA -0.5V to VCC + 0.5V 50 mA 50 mA -65C to +150C 2.0V to 6.0V 4.5V to 5.5V 0V to VCC 0V to VCC -55C to +125C Minimum Input Edge Rate (V/t) 'AC Devices VIN from 30% to 70% of VCC VCC @ 3.3V, 4.5V, 5.5V 125 mV/ns Minimum Input Edge Rate (V/t) 'ACT Devices VIN from 0.8V to 2.0V VCC @ 4.5V, 5.5V 125 mV/ns Note 1: Absolute maximum ratings are those values beyond which damage to the device may occur. The databook specifications should be met, without exception, to ensure that the system design is reliable over its power supply, temperature, and output/input loading variables. National does not recommend operation of FACTTM circuits outside databook specifications. 175C DC Characteristics for 'AC Family Devices 54AC Symbol Parameter VCC TA = (V) -55C to +125C Units Conditions Guaranteed Limits VIH VIL VOH Minimum High Level 3.0 2.1 Input Voltage 4.5 3.15 5.5 3.85 Maximum Low Level 3.0 0.9 Input Voltage 4.5 1.35 5.5 1.65 Minimum High Level 3.0 2.9 Output Voltage 4.5 5.5 4.4 5.4 VOUT = 0.1V V or VCC - 0.1V VOUT = 0.1V V or VCC - 0.1V IOUT = -50 A V (Note 2) VIN = VIL or VIH VOL 3.0 2.4 4.5 3.7 5.5 4.7 Maximum Low Level 3.0 0.1 Output Voltage 4.5 5.5 0.1 0.1 IOH = -12 mA V IOH = -24 mA IOH = -24 mA IOUT = 50 A V (Note 2) VIN = VIL or VIH IIN Maximum Input 3.0 0.50 4.5 0.50 5.5 0.50 5.5 1.0 IOL = 12 mA V IOL = 24 mA A Leakage Current www.national.com 4 100272 Version 2 Revision 3 IOL = 24 mA Print Date/Time: 2011/07/28 22:22:43 VI = VCC, GND Symbol Parameter VCC TA = (V) -55C to +125C Units Conditions Guaranteed Limits IOLD IOHD ICC Minimum Dynamic Output Current (Note 3) 5.5 50 mA VOLD = 1.65V Max 5.5 -50 mA VOHD = 3.85V Min Maximum Quiescent 5.5 80.0 A VIN = VCC Supply Current or GND Note 2: All outputs loaded; thresholds on input associated with output under test. Note 3: Maximum test duration 2.0 ms, one output loaded at a time. Note 4: IIN and ICC @ 3.0V are guaranteed to be less than or equal to the respective limit @ 5.5V VCC. ICC for 54AC @ 25C is identical to 74AC @ 25C. DC Characteristics for 'ACT Family Devices 54ACT Symbol Parameter VCC TA = (V) -55C to +125C Units Conditions Guaranteed Limits VIH VIL VOH Minimum High Level 4.5 2.0 Input Voltage 5.5 2.0 Maximum Low Level 4.5 0.8 Input Voltage 5.5 0.8 Minimum High Level 4.5 4.4 Output Voltage 5.5 5.4 V VOUT = 0.1V or VCC - 0.1V V VOUT = 0.1V or VCC - 0.1V V IOUT = -50 A (Note 5) VIN = VIL or VIH VOL 4.5 3.70 5.5 4.70 Maximum Low Level 4.5 0.1 Output Voltage 5.5 0.1 V IOH = -24 mA IOH = -24 mA V IOUT = 50 A (Note 5) VIN = VIL or VIH 4.5 IIN Maximum Input 0.50 V IOL = 24 mA 5.5 0.50 5.5 1.0 A IOL = 24 mA VI = VCC, GND 5.5 1.6 mA VI = VCC - 2.1V Leakage Current ICCT Maximum ICC/Input IOLD Minimum Dynamic 5.5 50 mA VOLD = 1.65V Max IOHD Output Current (Note 6) 5.5 -50 mA VOHD = 3.85V Min ICC Maximum Quiescent 5.5 80.0 A VIN = VCC Supply Current or GND Note 5: All outputs loaded; thresholds on input associated with output under test. Note 6: Maximum test duration 2.0 ms, one output loaded at a time. Note 7: ICC for 54ACT @ 25C is identical to 74ACT @ 25C. 5 100272 Version 2 Revision 3 Print Date/Time: 2011/07/28 22:22:43 www.national.com 54ACT157 * 54AC157 54AC 54ACT157 * 54AC157 AC Electrical Characteristics 54AC Symbol tPLH tPHL tPLH tPHL tPLH tPHL Parameter VCC TA = -55C (V) (Note 8) to +125C CL = 50 pF Fig. Units Min Max Propagation Delay 3.3 1.0 16.0 S to Zn 5.0 1.0 12.0 Propagation Delay 3.3 1.0 14.0 S to Zn 5.0 1.0 11.5 Propagation Delay 3.3 1.0 16.0 E to Zn 5.0 1.0 12.0 Propagation Delay 3.3 1.0 14.0 E to Zn 5.0 1.0 11.5 Propagation Delay 3.3 1.0 11.0 In to Zn 5.0 1.0 9.0 Propagation Delay 3.3 1.0 11.0 In to Zn 5.0 1.0 9.0 No. ns ns ns ns ns ns Note 8: Voltage Range 3.3 is 3.3V 0.3V Voltage Range 5.0 is 5.0V 0.5V AC Electrical Characteristics 54ACT Symbol tPLH Parameter Propagation Delay VCC TA = -55C (V) (Note 9) to +125C CL = 50 pF Fig. Units Min Max 5.0 1.0 11.5 ns 5.0 1.0 11.5 ns 5.0 1.0 12.0 ns 5.0 1.0 10.0 ns 5.0 1.0 8.5 ns 5.0 1.0 9.0 ns S to Zn tPHL Propagation Delay S to Zn tPLH Propagation Delay E to Zn tPHL Propagation Delay E to Zn tPLH Propagation Delay In to Zn tPHL Propagation Delay In to Zn Note 9: Voltage Range 5.0 is 5.0V 0.5V Capacitance Symbol Parameter Typ Units Conditions CIN Input Capacitance 4.5 pF VCC = OPEN CPD Power Dissipation 50.0 pF VCC = 5.0V Capacitance www.national.com 6 100272 Version 2 Revision 3 Print Date/Time: 2011/07/28 22:22:43 No. 54ACT157 * 54AC157 Physical Dimensions inches (millimeters) unless otherwise noted 20 Terminal Ceramic Leadless Chip Carrier (L) NS Package Number E20A 16-Lead Ceramic Dual-In-Line Package (D) NS Package Number J16A 7 100272 Version 2 Revision 3 Print Date/Time: 2011/07/28 22:22:43 www.national.com 54ACT157 * 54AC157 16-Lead Ceramic Flatpak (F) NS Package Number W16A www.national.com 8 100272 Version 2 Revision 3 Print Date/Time: 2011/07/28 22:22:43 54ACT157 * 54AC157 Notes 9 100272 Version 2 Revision 3 Print Date/Time: 2011/07/28 22:22:43 www.national.com 54ACT157 * 54AC157 Quad 2-Input Multiplexer Notes For more National Semiconductor product information and proven design tools, visit the following Web sites at: www.national.com Products Design Support Amplifiers www.national.com/amplifiers WEBENCH(R) Tools www.national.com/webench Audio www.national.com/audio App Notes www.national.com/appnotes Clock and Timing www.national.com/timing Reference Designs www.national.com/refdesigns Data Converters www.national.com/adc Samples www.national.com/samples Interface www.national.com/interface Eval Boards www.national.com/evalboards LVDS www.national.com/lvds Packaging www.national.com/packaging Power Management www.national.com/power Green Compliance www.national.com/quality/green Switching Regulators www.national.com/switchers Distributors www.national.com/contacts LDOs www.national.com/ldo Quality and Reliability www.national.com/quality LED Lighting www.national.com/led Feedback/Support www.national.com/feedback Voltage References www.national.com/vref Design Made Easy www.national.com/easy www.national.com/powerwise Applications & Markets www.national.com/solutions Mil/Aero www.national.com/milaero PowerWise(R) Solutions Serial Digital Interface (SDI) www.national.com/sdi Temperature Sensors www.national.com/tempsensors SolarMagicTM www.national.com/solarmagic PLL/VCO www.national.com/wireless www.national.com/training PowerWise(R) Design University THE CONTENTS OF THIS DOCUMENT ARE PROVIDED IN CONNECTION WITH NATIONAL SEMICONDUCTOR CORPORATION ("NATIONAL") PRODUCTS. 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