SEMICONDUCTOR TECHNICAL DATA High–Performance Silicon–Gate CMOS The MC74HC242 is identical in pinout to the LS242. The device inputs are compatible with Standard CMOS outputs; with pullup resistors, they are compatible with LSTTL outputs. This quad bus transceiver is designed for asynchronous two–way communications between data buses. The states of the Output Enables (A–to–B Enable and B–to–A Enable) determine both the direction of data flow (from A to B or from B to A) and the modes of the Data Ports (input, output, or high–impedance). • • • • • • • N SUFFIX PLASTIC PACKAGE CASE 646–06 14 1 ORDERING INFORMATION MC74HCXXXN Plastic Output Drive Capability: 15 LSTTL Loads Outputs Directly Interface to CMOS, NMOS and TTL FUNCTION TABLE Operating Voltage Range: 2 to 6V Control Inputs Low Input Current: 1µA High Noise Immunity Characteristic of CMOS Devices In Compliance With the JEDEC Standard No. 7A Requirements A–to–B Enable B–to–A Enable A B H L H L H H L L O Z Z I I Z Z O Chip Complexity: 130 FETs or 32.5 Equivalent Gates LOGIC DIAGRAM A1 A Data Port A2 A3 A4 Output EnableS 3 11 4 10 5 9 6 8 A–TO–B ENABLE B–TO–A ENABLE 1 13 I = Input; O = Output, O = Inverting Output Z = High Impedance B1 B2 B Data Port B3 B4 Pin 14 = VCC Pin 7 = GND Pins 2, 12 = No Connection Pinout: 14–Lead Plastic Package (Top View) B–to–A VCC Enable NC 14 13 12 1 2 A–to–B NC Enable B1 B2 B3 B4 11 10 9 8 3 4 5 6 7 A1 A2 A3 A4 GND NC = No Connection 10/95 Motorola, Inc. 1995 Data Port Status 1 REV 6 ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎ ÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎ ÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ MC74HC242 MAXIMUM RATINGS* Symbol VCC Parameter DC Supply Voltage (Referenced to GND) Value Unit – 0.5 to + 7.0 V V Vin DC Input Voltage (Referenced to GND) – 1.5 to VCC + 1.5 VI/O DC Output Voltage (Referenced to GND) – 0.5 to VCC + 0.5 V Iin DC Input Current, per Pin ± 20 mA II/O DC Output Current, per Pin ± 35 mA ICC DC Supply Current, VCC and GND Pins ± 75 mA PD Power Dissipation in Still Air 750 mW Tstg Storage Temperature – 65 to + 150 _C TL Plastic DIP† _C Lead Temperature, 1 mm from Case for 10 Seconds Plastic DIP Package This device contains protection circuitry to guard against damage due to high static voltages or electric fields. However, precautions must be taken to avoid applications of any voltage higher than maximum rated voltages to this high–impedance circuit. For proper operation, Vin and Vout should be constrained to the range GND (Vin or Vout) VCC. Unused inputs must always be tied to an appropriate logic voltage level (e.g., either GND or VCC). Unused outputs must be left open. v v 260 * Maximum Ratings are those values beyond which damage to the device may occur. Functional operation should be restricted to the Recommended Operating Conditions. †Derating — Plastic DIP: – 10 mW/_C from 65_ to 125_C For high frequency or heavy load considerations, see Chapter 2 of the Motorola High–Speed CMOS Data Book (DL129/D). RECOMMENDED OPERATING CONDITIONS Symbol VCC Vin, Vout Parameter DC Supply Voltage (Referenced to GND) Min Max Unit 2.0 6.0 V 0 VCC V – 55 + 125 _C 0 0 0 1000 500 400 ns DC Input Voltage, Output Voltage (Referenced to GND) TA Operating Temperature Range, All Package Types tr, tf Input Rise/Fall Time (Figure 1) VCC = 2.0 V VCC = 4.5 V VCC = 6.0 V DC CHARACTERISTICS (Voltages Referenced to GND) VCC V Guaranteed Limit Symbol Parameter –55 to 25°C ≤85°C ≤125°C Unit VIH Minimum High–Level Input Voltage Vout = 0.1V or VCC –0.1V |Iout| ≤ 20µA 2.0 4.5 6.0 1.50 3.15 4.20 1.50 3.15 4.20 1.50 3.15 4.20 V VIL Maximum Low–Level Input Voltage Vout = 0.1V or VCC – 0.1V |Iout| ≤ 20µA 2.0 4.5 6.0 0.3 0.9 1.2 0.3 0.9 1.2 0.3 0.9 1.2 V Minimum High–Level Output Voltage Vin = VIH or VIL |Iout| ≤ 20µA 2.0 4.5 6.0 1.9 4.4 5.9 1.9 4.4 5.9 1.9 4.4 5.9 V 4.5 6.0 3.98 5.48 3.84 5.34 3.70 5.20 2.0 4.5 6.0 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 4.5 6.0 0.26 0.26 0.33 0.33 0.40 0.40 VOH Condition Vin =VIH or VIL VOL Maximum Low–Level Output Voltage |Iout| ≤ 6.0mA |Iout| ≤ 7.8mA Vin = VIH or VIL |Iout| ≤ 20µA Vin = VIH or VIL |Iout| ≤ 6.0mA |Iout| ≤ 7.8mA V Iin Maximum Input Leakage Current Vin = VCC or GND 6.0 ±0.1 ±1.0 ±1.0 µA IOZ Maximum Three–State Leakage Current Output in High–Impedance State Vin = VIL or VIH Vout = VCC or GND 6.0 ±0.5 ±5.0 ±10.0 µA Vin = VCC or GND 6.0 8 80 160 µA Iout = 0µA NOTE: Information on typical parametric values can be found in Chapter 2 of the Motorola High–Speed CMOS Data Book (DL129/D). ICC MOTOROLA Maximum Quiescent Supply Current (per Package) 2 High–Speed CMOS Logic Data DL129 — Rev 6 MC74HC242 AC CHARACTERISTICS (CL = 50 pF, Input tr = tf = 6 ns) Symbol Parameter Guaranteed Limit VCC V –55 to 25°C ≤85°C ≤125°C Unit tPLH, tPHL Maximum Propagation Delay, A to B or B to A (Figures 2 and 4) 2.0 4.5 6.0 100 20 17 125 25 21 150 30 26 ns tPLZ, tPHZ Maximum Propagation Delay, Output Enable to Output A or B (Figures 3 and 5) 2.0 4.5 6.0 150 30 26 190 38 33 225 45 38 ns tPZL, tPZH Maximum Propagation Delay, Output Enable to Output A or B (Figures 3 and 5) 2.0 4.5 6.0 150 30 26 190 38 33 225 45 38 ns tTLH, tTHL Maximum Output Transition Time, Any Output (Figures 2 and 4) 2.0 4.5 6.0 60 12 10 75 15 13 90 18 15 ns Maximum Input Capacitance 10 10 10 pF Maximum Three–State Output Capacitance (Output in High Impedance State) 15 15 15 pF Cin Cout NOTE: For propagation delays with loads other than 50 pF, and information on typical parametric values, see Chapter 2 of the Motorola High– Speed CMOS Data Book (DL129/D). Typical @ 25°C, VCC = 5.0 V CPD Power Dissipation Capacitance (Per Transceiver)* pF 31 * Used to determine the no–load dynamic power consumption: PD = CPD VCC 2 f + ICC VCC . For load considerations, see Chapter 2 of the Motorola High–Speed CMOS Data Book (DL129/D). PIN DESCRIPTIONS DATA PORTS CONTROL INPUTS A1–A4 (Pins 3,4,5,6) and B1–B4 (Pins 11,10,9,8) A–to–B Enable (Pin 1) and B–to–A Enable (Pin 13) Data on these pins may be transferred between data buses. Depending upon the states of the Output Enables, these pins may be inputs, outputs or open circuits (high–impedance). Data on these Output Enables determine both the direction of the data flow (from A to B or from B to A) and the states of the outputs (standard or high impedance), according to the Function Table. High–Speed CMOS Logic Data DL129 — Rev 6 3 MOTOROLA MC74HC242 VCC One of Four Transceivers A (I/O) VCC B (I/O) A–to–B 1 Enable B–to–A 13 Enable Figure 1. Expanded Logic Diagram SWITCHING WAVEFORMS tf tr VCC 90% Input A or B Output Enable VCC 50% 50% GND 50% tPZL tPLZ 10% High Impedance GND tPHL Output A or B tPLH 50% 10% 90% Output A or B VOL tPZH tPHZ 50% 10% 90% Output A or B tTLH tTHL VOH 50% High Impedance Figure 2. Figure 3. TEST CIRCUITS TEST POINT TEST POINT OUTPUT DEVICE UNDER TEST OUTPUT DEVICE UNDER TEST CL* *Includes all probe and jig capacitance CL* *Includes all probe and jig capacitance Figure 4. MOTOROLA CONNECT TO VCC WHEN TESTING tPLZ AND tPZL. CONNECT TO GND WHEN TESTING tPHZ and tPZH. 1kΩ Figure 5. 4 High–Speed CMOS Logic Data DL129 — Rev 6 MC74HC242 OUTLINE DIMENSIONS N SUFFIX PLASTIC DIP PACKAGE CASE 646–06 ISSUE L 14 8 1 7 NOTES: 1. LEADS WITHIN 0.13 (0.005) RADIUS OF TRUE POSITION AT SEATING PLANE AT MAXIMUM MATERIAL CONDITION. 2. DIMENSION L TO CENTER OF LEADS WHEN FORMED PARALLEL. 3. DIMENSION B DOES NOT INCLUDE MOLD FLASH. 4. ROUNDED CORNERS OPTIONAL. B A F DIM A B C D F G H J K L M N L C J N H G D SEATING PLANE K M INCHES MIN MAX 0.715 0.770 0.240 0.260 0.145 0.185 0.015 0.021 0.040 0.070 0.100 BSC 0.052 0.095 0.008 0.015 0.115 0.135 0.300 BSC 0_ 10_ 0.015 0.039 MILLIMETERS MIN MAX 18.16 19.56 6.10 6.60 3.69 4.69 0.38 0.53 1.02 1.78 2.54 BSC 1.32 2.41 0.20 0.38 2.92 3.43 7.62 BSC 0_ 10_ 0.39 1.01 Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation consequential or incidental damages. “Typical” parameters can and do vary in different applications. All operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. Motorola does not convey any license under its patent rights nor the rights of others. Motorola products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the Motorola product could create a situation where personal injury or death may occur. Should Buyer purchase or use Motorola products for any such unintended or unauthorized application, Buyer shall indemnify and hold Motorola and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that Motorola was negligent regarding the design or manufacture of the part. Motorola and are registered trademarks of Motorola, Inc. Motorola, Inc. is an Equal Opportunity/Affirmative Action Employer. How to reach us: USA/EUROPE: Motorola Literature Distribution; P.O. Box 20912; Phoenix, Arizona 85036. 1–800–441–2447 JAPAN: Nippon Motorola Ltd.; Tatsumi–SPD–JLDC, Toshikatsu Otsuki, 6F Seibu–Butsuryu–Center, 3–14–2 Tatsumi Koto–Ku, Tokyo 135, Japan. 03–3521–8315 MFAX: [email protected] –TOUCHTONE (602) 244–6609 INTERNET: http://Design–NET.com HONG KONG: Motorola Semiconductors H.K. Ltd.; 8B Tai Ping Industrial Park, 51 Ting Kok Road, Tai Po, N.T., Hong Kong. 852–26629298 High–Speed CMOS Logic Data DL129 — Rev 6 ◊ CODELINE 5 *MC74HC242/D* MC74HC242/D MOTOROLA