S E M I C O N D U C T O R CD74HC157, CD74HCT157, CD74HC158, CD74HCT158 High Speed CMOS Logic Quad 2-Input Multiplexers September 1997 Features Description • Common Select Inputs The Harris CD74HC157, CD74HCT157, CD74HC158 and CD74HCT158 are quad 2-input multiplexers which select 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 in the 158, the inverting type, (1Y-4Y) are forced High and in the 157, the noninverting type, all of the outputs (1Y-4Y) are forced Low, regardless of all other input conditions. • Separate Enable Inputs • Buffered inputs and Outputs • Fanout (Over Temperature Range) - Standard Outputs . . . . . . . . . . . . . . . 10 LSTTL Loads - Bus Driver Outputs . . . . . . . . . . . . . 15 LSTTL Loads • Wide Operating Temperature Range . . . -55oC to 125oC Moving data from two groups of registers to four common output busses is a common use of these devices. The state of the Select input determines the particular register from which the data comes. They can also be used as function generators. • Balanced Propagation Delay and Transition Times • Significant Power Reduction Compared to LSTTL Logic ICs • HC Types - 2V to 6V Operation - High Noise Immunity: NIL = 30%, NIH = 30%of VCC at VCC = 5V Ordering Information PART NUMBER • HCT Types - 4.5V to 5.5V Operation - Direct LSTTL Input Logic Compatibility, VIL= 0.8V (Max), VIH = 2V (Min) - CMOS Input Compatibility, Il ≤ 1µA at VOL, VOH Pinout CD74HC157, CD74HCT157, CD74HC158, CD74HCT158 (PDIP, SOIC) TOP VIEW S 1 1I0 2 15 E 14 4I0 1Y 4 13 4I1 2I0 5 12 4Y 2I1 6 11 3I0 2Y 7 10 3I1 GND 8 9 3Y CD74HC157E -55 to 125 16 Ld PDIP E16.3 CD74HCT157E -55 to 125 16 Ld PDIP E16.3 CD74HC158E -55 to 125 16 Ld PDIP E16.3 CD74HCT158E -55 to 125 16 Ld PDIP E16.3 CD74HC157M -55 to 125 16 Ld SOIC M16.15 CD74HCT157M -55 to 125 16 Ld SOIC M16.15 CD74HC158M -55 to 125 16 Ld SOIC M16.15 1. When ordering, use the entire part number. Add the suffix 96 to obtain the variant in the tape and reel. 2. Wafer or die for this part number is available which meets all electrical specifications. Please contact your local sales office or Harris customer service for ordering information. CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures. Copyright © Harris Corporation 1997 PKG. NO. PACKAGE NOTES: 16 VCC 1I1 3 TEMP. RANGE (oC) 1 File Number 1642.2 CD74HC157, CD74HCT157, CD74HC158, CD74HCT158 Functional Diagram HC/HCT HC/HCT 157 158 1I0 1I1 2I0 2I1 3I0 3I1 4I0 4I1 2 4 3 5 1Y 1Y 2Y 2Y 3Y 3Y 4Y 4Y 7 6 11 9 10 14 12 13 1 15 S E TRUTH TABLE OUTPUT ENABLE SELECT INPUT E S I0 H X L DATA INPUTS 157 158 I1 Y Y X X L H L L X L H L L H X H L L H X L L H L H X H H L NOTE: H = High Voltage Level, L = Low Voltage Level, X = Don’t Care 2 CD74HC157, CD74HCT157, CD74HC158, CD74HCT158 Absolute Maximum Ratings Thermal Information DC Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to 7V DC Input Diode Current, IIK For VI < -0.5V or VI > VCC + 0.5V . . . . . . . . . . . . . . . . . . . . . .±20mA DC Output Diode Current, IOK For VO < -0.5V or VO > VCC + 0.5V . . . . . . . . . . . . . . . . . . . .±20mA DC Output Source or Sink Current per Output Pin, IO For VO > -0.5V or VO < VCC + 0.5V . . . . . . . . . . . . . . . . . . . .±25mA DC VCC or Ground Current, ICC or IGND . . . . . . . . . . . . . . . . . .±50mA Thermal Resistance (Typical, Note 3) θJA (oC/W) PDIP Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90 SOIC Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115 Maximum Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . 150oC Maximum Storage Temperature Range . . . . . . . . . .-65oC to 150oC Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . . 300oC (SOIC - Lead Tips Only) Operating Conditions Temperature Range (TA) . . . . . . . . . . . . . . . . . . . . . -55oC to 125oC Supply Voltage Range, VCC HC Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2V to 6V HCT Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4.5V to 5.5V DC Input or Output Voltage, VI, VO . . . . . . . . . . . . . . . . . 0V to VCC Input Rise and Fall Time 2V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1000ns (Max) 4.5V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 500ns (Max) 6V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 400ns (Max) CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. NOTE: 3. θJA is measured with the component mounted on an evaluation PC board in free air. DC Electrical Specifications TEST CONDITIONS PARAMETER 25oC -40oC TO 85oC -55oC TO 125oC SYMBOL VI (V) IO (mA) VCC (V) VIH - - 2 1.5 - - 1.5 4.5 3.15 - - 3.15 - 3.15 - V 6 4.2 - - 4.2 - 4.2 - V MIN TYP MAX MIN MAX MIN MAX UNITS - 1.5 - V HC TYPES High Level Input Voltage Low Level Input Voltage High Level Output Voltage CMOS Loads VIL VOH - VIH or VIL High Level Output Voltage TTL Loads Low Level Output Voltage CMOS Loads VOL VIH or VIL Low Level Output Voltage TTL Loads Input Leakage Current Quiescent Device Current - 2 - - 0.5 - 0.5 - 0.5 V 4.5 - - 1.35 - 1.35 - 1.35 V 6 - - 1.8 - 1.8 - 1.8 V -0.02 2 1.9 - - 1.9 - 1.9 - V -0.02 4.5 4.4 - - 4.4 - 4.4 - V -0.02 6 5.9 - - 5.9 - 5.9 - V - - - - - - - - - V -4 4.5 3.98 - - 3.84 - 3.7 - V -5.2 6 5.48 - - 5.34 - 5.2 - V 0.02 2 - - 0.1 - 0.1 - 0.1 V 0.02 4.5 - - 0.1 - 0.1 - 0.1 V 0.02 6 - - 0.1 - 0.1 - 0.1 V - - - - - - - - - V 4 4.5 - - 0.26 - 0.33 - 0.4 V 5.2 6 - - 0.26 - 0.33 - 0.4 V II VCC or GND - 6 - - ±0.1 - ±1 - ±1 µA ICC VCC or GND 0 6 - - 8 - 80 - 160 µA 3 CD74HC157, CD74HCT157, CD74HC158, CD74HCT158 DC Electrical Specifications (Continued) TEST CONDITIONS SYMBOL VI (V) IO (mA) High Level Input Voltage VIH - - Low Level Input Voltage VIL - High Level Output Voltage CMOS Loads VOH VIH or VIL PARAMETER VCC (V) 25oC -40oC TO 85oC -55oC TO 125oC MIN TYP MAX MIN MAX MIN MAX UNITS 4.5 to 5.5 2 - - 2 - 2 - V - 4.5 to 5.5 - - 0.8 - 0.8 - 0.8 V -0.02 4.5 4.4 - - 4.4 - 4.4 - V -4 4.5 3.98 - - 3.84 - 3.7 - V 0.02 4.5 - - 0.1 - 0.1 - 0.1 V 4 4.5 - - 0.26 - 0.33 - 0.4 V ±0.1 - ±1 - ±1 µA HCT TYPES High Level Output Voltage TTL Loads Low Level Output Voltage CMOS Loads VOL VIH or VIL Low Level Output Voltage TTL Loads Input Leakage Current Quiescent Device Current Additional Quiescent Device Current Per Input Pin: 1 Unit Load II VCC and GND 0 5.5 - ICC VCC or GND 0 5.5 - - 8 - 80 - 160 µA ∆ICC VCC -2.1 - 4.5 to 5.5 - 100 360 - 450 - 490 µA NOTE: For dual-supply systems theoretical worst case (VI = 2.4V, VCC = 5.5V) specification is 1.8mA. HCT Input Loading Table UNIT LOADS INPUT HCT157 HCT158 I (All) 0.95 0.4 E 0.6 0.6 S 3 2.8 NOTE: Unit Load is ∆ICC limit specified in DC Electrical Table, e.g., 360µA max at 25oC. Switching Specifications Input tr, tf = 6ns PARAMETER SYMBOL TEST CONDITIONS 25oC -40oC TO 85oC -55oC TO 125oC VCC (V) MIN TYP MAX MIN MAX MIN MAX UNITS 2 - - 125 - 155 - 190 ns HC/HCT157 TYPES Propagation Delay (Figure 1) tPLH, tPHL CL = 50pF Data to Output HC157 CL =15pF 4.5 - - 25 - 31 - 38 ns 5 - 10 - - - - - ns - 12 - - - - - ns - - 21 - 26 - 32 ns HCT157 CL = 50pF 6 4 CD74HC157, CD74HCT157, CD74HC158, CD74HCT158 Switching Specifications Input tr, tf = 6ns PARAMETER SYMBOL Enable to Output (Continued) TEST CONDITIONS tPLH, tPHL CL = 50pF HC157 CL =15pF 25oC Select to Output tPLH, tPHL CL = 50pF -55oC TO 125oC MIN TYP MAX MIN MAX MIN MAX UNITS 2 - - 135 - 170 - 205 ns 4.5 - - 27 - 34 - 41 ns 5 - 11 - - - - - ns - 12 - - - - - ns 6 - - 23 - 29 - 35 ns HCT157 CL = 50pF -40oC TO 85oC VCC (V) 2 - - 145 - 180 - 220 ns 4.5 - - 29 - 36 - 44 ns 5 - 12 - - - - - ns - 15 - - - - - ns - - 25 - 31 - 38 ns HC157 - 62 - - - - - pF HCT157 - 70 - - - - - pF 2 - - 140 - 175 - 210 ns 4.5 - - 28 - 35 - 42 CL =15pF 5 - 11 - - - - - - 13 - - - - - ns CL = 50pF 6 - - 24 - 30 - 36 ns tPLH, tPHL CL = 50pF 2 - - 160 - 200 - 240 ns 4.5 - - 32 - 40 - 48 ns 5 - 13 - - - - - ns - 15 - - - - - ns HC157 CL =15pF HCT157 CL = 50pF Power Dissipation Capacitance (Notes 4, 5) CPD - 6 5 HC/HCT158 TYPES Data to Output tPLH, tPHL CL = 50pF HC158 HCT 158 Enable to Output HC158 CL =15pF HCT 158 Select to Output CL = 50pF 6 - - 27 - 34 - 41 ns tPLH, tPHL CL = 50pF 2 - - 150 - 190 - 225 ns HC158 CL =15pF 4.5 - - 30 - 38 - 45 ns 5 - 12 - - - - - ns - 14 - - - - - ns 6 - - 26 - 33 - 38 ns HCT 158 CL = 50pF Output Transition Time 2 - - 75 - 95 - 110 ns 4.5 - - 15 - 19 - 22 ns 6 - - 13 - 16 - 19 ns HC158 - 35 - - - - - pF HCT 158 - 35 - - - - - pF - - 10 - 10 - 10 pF Power Dissipation Capacitance (Notes 4, 5) Input Capacitance ns tTLH, tTHL CPD CIN CL = 50pF - CL = 50pF 5 - NOTES: 4. CPD is used to determine the dynamic power consumption, per multiplexer. 5. PD = VCC2 fi (CPD + CL) where fi = input frequency, CL = output load capacitance, VCC = supply voltage. 5 CD74HC157, CD74HCT157, CD74HC158, CD74HCT158 Test Circuits and Waveforms tr = 6ns tf = 6ns 90% 50% 10% INPUT GND tTLH GND tTHL 90% 50% 10% INVERTING OUTPUT 3V 2.7V 1.3V 0.3V INPUT tTHL tPHL tf = 6ns tr = 6ns VCC tTLH 90% 1.3V 10% INVERTING OUTPUT tPHL tPLH FIGURE 1. HC AND HCU TRANSITION TIMES AND PROPAGATION DELAY TIMES, COMBINATION LOGIC tPLH FIGURE 2. HCT TRANSITION TIMES AND PROPAGATION DELAY TIMES, COMBINATION LOGIC All Harris Semiconductor products are manufactured, assembled and tested under ISO9000 quality systems certification. Harris Semiconductor products are sold by description only. Harris Semiconductor reserves the right to make changes in circuit design and/or specifications at any time without notice. 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