SEMICONDUCTOR TECHNICAL DATA The MC74VHC245 is an advanced high speed CMOS octal bus transceiver fabricated with silicon gate CMOS technology. It achieves high speed operation similar to equivalent Bipolar Schottky TTL while maintaining CMOS low power dissipation. It is intended for two-way asynchronous communication between data buses. The direction of data transmission is determined by the level of the DIR input. The output enable pin (OE) can be used to disable the device, so that the buses are effectively isolated. All inputs are equipped with protection circuits against static discharge. * * * * * * * * * * * DW SUFFIX 20-LEAD SOIC PACKAGE CASE 751D-04 High Speed: tPD = 4.0ns (Typ) at VCC = 5V Low Power Dissipation: ICC = 4A (Max) at TA = 25C High Noise Immunity: VNIH = VNIL = 28% VCC Power Down Protection Provided on Inputs Balanced Propagation Delays Designed for 2V to 5.5V Operating Range Low Noise: VOLP = 1.2V (Max) Pin and Function Compatible with Other Standard Logic Families Latchup Performance Exceeds 300mA ESD Performance: HBM > 2000V; Machine Model > 200V Chip Complexity: 308 FETs or 77 Equivalent Gates DT SUFFIX 20-LEAD TSSOP PACKAGE CASE 948E-02 M SUFFIX 20-LEAD SOIC EIAJ PACKAGE CASE 967-01 APPLICATION NOTES ORDERING INFORMATION MC74VHCXXXDW SOIC MC74VHCXXXDT TSSOP MC74VHCXXXM SOIC EIAJ 1. Do not force a signal on an I/O pin when it is an active output, damage may occur. 2. All floating (high impedence) input or I/O pins must be fixed by means of pull up or pull down resistors or bus terminator ICs. 3. A parasitic diode is formed between the bus and VCC terminals. Therefore, the VHC245 cannot be used to interface 5V to 3V systems directly. PIN ASSIGNMENT LOGIC DIAGRAM A1 A2 A3 A DATA PORT A4 A5 A6 A7 A8 DIR OE 2 18 3 17 4 16 5 15 6 14 7 13 8 12 9 11 B1 DIR 1 20 VCC B2 A1 2 19 OE A2 3 18 B1 A3 4 17 B2 A4 5 16 B3 A5 6 15 B4 A6 7 14 B5 A7 8 13 B6 A8 9 12 B7 10 11 B8 B3 B4 B5 B DATA PORT B6 B7 B8 1 19 GND FUNCTION TABLE Control Inputs O Operation i OE DIR L L Data Transmitted from Bus B to Bus A L H Data Transmitted from Bus A to Bus B H X Buses Isolated (High-Impedance State) 6/97 Motorola, Inc. 1997 1 REV 1 MC74VHC245 IIIIIIIIIIIIIIIIIIIIIII III IIIIIIIIIIIIII IIIIII III IIIIIIIIIIIIIIIIIIIIIII III IIIIIIIIIIIIII IIIIII III III IIIIIIIIIIIIII IIIIII III III IIIIIIIIIIIIII IIIIII III III IIIIIIIIIIIIII IIIIII III III IIIIIIIIIIIIII IIIIII III III IIIIIIIIIIIIII IIIIII III III IIIIIIIIIIIIII IIIIII III III IIIIIIIIIIIIII IIIIII III III IIIIIIIIIIIIII IIIIII III III IIIIIIIIIIIIII IIIIII III III IIIIIIIIIIIIII IIIIII III MAXIMUM RATINGS* Symbol Value Unit DC Supply Voltage - 0.5 to + 7.0 V Vin DC Input Voltage - 0.5 to + 7.0 V Vout DC Output Voltage - 0.5 to VCC + 0.5 V IIK Input Diode Current - 20 mA IOK Output Diode Current 20 mA Iout DC Output Current, per Pin 25 mA ICC DC Supply Current, VCC and GND Pins 75 mA PD Power Dissipation in Still Air 500 450 mW Tstg Storage Temperature - 65 to + 150 _C VCC Parameter SOIC Packages TSSOP 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 V CC ). Unused outputs must be left open. v v * Absolute maximum continuous ratings are those values beyond which damage to the device may occur. Exposure to these conditions or conditions beyond those indicated may adversely affect device reliability. Functional operation under absolute-maximum-rated conditions is not implied. Derating -- SOIC Packages: - 7 mW/_C from 65_ to 125_C TSSOP Package: - 6.1 mW/_C from 65_ to 125_C IIII IIIIIIIIIIIIII III III III IIII IIIIIIIIIIIIII III III III IIII IIIIIIIIIIIIII III III III IIII IIIIIIIIIIIIII III III III IIII IIIIIIIIIIIIII III III III IIII IIIIIIIIIIIIII III III III IIII IIIIIIIIIIIIII III III III IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII IIII IIIIII IIIIIIII III IIIIIIIII IIIIIII II IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII IIII IIIIII IIIIIIII III IIII III IIII IIII IIII II IIIIIIIII IIIIIII IIII IIIIII IIIIIIII III IIII III IIII IIII IIII II III IIII IIIIII IIIIIIII IIII III IIII IIII IIII II II IIII IIIIII IIIIIIII III IIII III IIII IIII IIII III IIII IIIIII IIIIIIII IIII III IIII IIII IIII II III II IIII IIIIII IIIIIIII IIII III IIII IIII IIII IIII IIIIII IIIIIIII III IIII III IIII IIII IIII II III IIII IIIIII IIIIIIII IIII III IIII IIII IIII II II IIII IIIIII IIIIIIII III IIII III IIII IIII IIII IIIIIIIIIIIIIIIIIIIIIIII IIII IIIIII IIIIIIII II IIII IIIIII IIIIIIII III IIII III IIII IIII IIII III IIII IIIIII IIIIIIII IIII III IIII IIII IIII II III II IIII IIIIII IIIIIIII IIII III IIII IIII IIII III IIII IIIIII IIIIIIII IIII III IIII IIII IIII II III IIII IIIIII IIIIIIII IIII III IIII IIII IIII II II IIII IIIIII IIIIIIII III IIII III IIII IIII IIII IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII RECOMMENDED OPERATING CONDITIONS Symbol VCC Parameter Min Max Unit 2.0 5.5 V 0 5.5 V V DC Supply Voltage Vin DC Input Voltage Vout DC Output Voltage TA Operating Temperature tr, tf Input Rise and Fall Time 0 VCC - 40 + 85 _C 0 0 100 20 ns/V VCC = 3.3V 0.3V VCC =5.0V 0.5V DC ELECTRICAL CHARACTERISTICS S b l Symbol P Parameter T Test C Conditions di i VCC V VIH Minimum High-Level Input Voltage 2.0 3.0 to 5.5 VIL Maximum Low-Level Input Voltage 2.0 3.0 to 5.5 VOH Minimum High-Level Output Voltage VOL Iin Maximum Low-Level Output Voltage Maximum Input Leakage Current MOTOROLA TA = 25C Min Max 1.50 VCC x 0.7 Min 2.0 3.0 4.5 1.9 2.9 4.4 Vin = VIH or VIL IOH = - 4mA IOH = - 8mA 3.0 4.5 2.58 3.94 Vin = VIH or VIL IOL = 50A 2.0 3.0 4.5 Vin = VIH or VIL IOL = 4mA IOL = 8mA Max 1.50 VCC x 0.7 0.50 VCC x 0.3 Vin = VIH or VIL IOH = - 50A Vin = 5.5 V or GND (DIR, OE) Typ TA = - 40 to 85C 2.0 3.0 4.5 V 0.50 VCC x 0.3 V V 1.9 2.9 4.4 2.48 3.80 0.1 0.1 0.1 0.1 0.1 0.1 3.0 4.5 0.36 0.36 0.44 0.44 0 to 5.5 0.1 1.0 2 U i Unit 0.0 0.0 0.0 V A VHC Data - Advanced CMOS Logic DL203 -- Rev 1 MC74VHC245 IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII IIII IIIIII IIIIIIII III IIIIIIIII IIIIIII II IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII IIII IIIIII IIIIIIII III IIII III IIII IIII IIII II IIIIIIIII IIIIIII IIII IIIIII IIIIIIII III IIII III IIII IIII IIII II III IIII IIIIII IIIIIIII IIII III IIII IIII IIII II II IIII IIIIII IIIIIIII III IIII III IIII IIII IIII III IIII IIIIII IIIIIIII IIII III IIII IIII IIII II IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII IIII IIIIII IIIIIIII III IIII III IIII IIII IIII II IIII IIIIIIII IIIIIIIII IIIIIIIII IIIIII II IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII IIII IIIIIIII IIIIIIIII IIII III IIII III IIII II IIIIIIIII IIIIII IIII IIIIIIII IIIIIIIII IIII III IIII III IIII II IIII IIIIIIII IIIIIIIII IIII III IIII III IIII II II IIII IIIIIIII IIIIIIIII IIII III IIII III IIII IIII IIIIIIII IIIIIIIII IIII III IIII III IIII II II IIII IIIIIIII IIIIIIIII IIII III IIII III IIII IIII IIIIIIII IIIIIIIII IIII III IIII III IIII II IIII IIIIIIII IIIIIIIII IIII III IIII III IIII II II IIII IIIIIIII IIIIIIIII IIII III IIII III IIII IIII IIIIIIII IIIIIIIII IIII III IIII III IIII II II IIII IIIIIIII IIIIIIIII IIII III IIII III IIII IIII IIIIIIII IIIIIIIII IIII III IIII III IIII II IIII IIIIIIII IIIIIIIII IIII III IIII III IIII II II IIII IIIIIIII IIIIIIIII IIII III IIII III IIII IIII IIIIIIII IIIIIIIII IIII III IIII III IIII II II IIII IIIIIIII IIIIIIIII IIII III IIII III IIII IIII IIIIIIII IIIIIIIII IIII III IIII III IIII II IIII IIIIIIII IIIIIIIII IIII III IIII III IIII II IIII IIIIIIII IIIIIIIII IIII III IIII III IIIIII DC ELECTRICAL CHARACTERISTICS Test Conditions VCC V Symbol Parameter IOZ Maximum Three-State Leakage Current Vin = VIL or VIH Vout = VCC or GND 5.5 ICC Maximum Quiescent Supply Current Vin = VCC or GND 5.5 TA = 25C Min Typ TA = - 40 to 85C Max Min Max Unit 0.25 2.5 A 4.0 40.0 A AC ELECTRICAL CHARACTERISTICS (Input tr = tf = 3.0ns) TA = 25C S b l Symbol tPLH, tPHL tPZL, tPZH tPLZ, tPHZ tOSLH, tOSHL P Parameter Maximum Propagation Delay, A to B or B to A Output Enable Time OE to A or B Output Disable Time OE to A or B Output to Output Skew T Test C Conditions di i Min TA = - 40 to 85C Typ Max Min Max U i Unit ns VCC = 3.3 0.3V CL = 15pF CL = 50pF 5.8 8.3 8.4 11.9 1.0 1.0 10.0 13.5 VCC = 5.0 0.5V CL = 15pF CL = 50pF 4.0 5.5 5.5 7.5 1.0 1.0 6.5 8.5 VCC = 3.3 0.3V RL = 1 k CL = 15pF CL = 50pF 8.5 11.0 13.2 16.7 1.0 1.0 15.5 19.0 VCC = 5.0 0.5V RL = 1 k CL = 15pF CL = 50pF 5.8 7.3 8.5 10.6 1.0 1.0 10.0 12.0 VCC = 3.3 0.3V RL = 1 k CL = 50pF 11.5 15.8 1.0 18.0 VCC = 5.0 0.5V RL = 1 k CL = 50pF 7.0 9.7 1.0 11.0 VCC = 3.3 0.3V (Note 1.) CL = 50pF 1.5 1.5 pF VCC = 5.0 0.5V (Note 1.) CL = 50pF 1.0 1.0 ns 10 10 pF Cin Maximum Input Capacitance DIR, OE 4 CI/O Maximum Three-State I/O Capacitance 8 ns ns pF Typical @ 25C, VCC = 5.0V CPD P Power Dissipation Di i i C Capacitance i (N (Note 2 2.)) pF F 21 1. Parameter guaranteed by design. tOSLH = |tPLHm - tPLHn|, tOSHL = |tPHLm - tPHLn|. 2. CPD is defined as the value of the internal equivalent capacitance which is calculated from the operating current consumption without load. Average operating current can be obtained by the equation: ICC(OPR) = CPD VCC fin + ICC / 8 (per bit). CPD is used to determine the no-load dynamic power consumption; PD = CPD VCC2 fin + ICC VCC. NOISE CHARACTERISTICS (Input tr = tf = 3.0ns, CL = 50pF, VCC = 5.0V) TA = 25C S b l Symbol P Parameter Typ Max U i Unit VOLP Quiet Output Maximum Dynamic VOL 0.9 1.2 V VOLV Quiet Output Minimum Dynamic VOL -0.9 -1.2 V VIHD Minimum High Level Dynamic Input Voltage 3.5 V VILD Maximum Low Level Dynamic Input Voltage 1.5 V VHC Data - Advanced CMOS Logic DL203 -- Rev 1 3 MOTOROLA MC74VHC245 SWITCHING WAVEFORMS VCC 50% DIR GND VCC OE GND VCC A or B tPZL 50% GND tPLH 50% VCC 50% VCC tPHL A or B B or A A or B HIGH IMPEDANCE 50% VCC tPZH 50% VCC tPLZ VOL +0.3V tPHZ VOH -0.3V HIGH IMPEDANCE 50% VCC Figure 1. Figure 2. TEST CIRCUITS TEST POINT TEST POINT OUTPUT DEVICE UNDER TEST OUTPUT DEVICE UNDER TEST CL* * Includes all probe and jig capacitance CL* CONNECT TO VCC WHEN TESTING tPLZ AND tPZL. CONNECT TO GND WHEN TESTING tPHZ AND tPZH. * Includes all probe and jig capacitance Figure 3. MOTOROLA 1 k Figure 4. 4 VHC Data - Advanced CMOS Logic DL203 -- Rev 1 MC74VHC245 EXPANDED LOGIC DIAGRAM A1 2 18 A2 3 17 A3 B8 1 DIR 19 INPUT EQUIVALENT CIRCUIT BUS TERMINAL EQUIVALENT CIRCUIT DIR, OE A, B INPUT VHC Data - Advanced CMOS Logic DL203 -- Rev 1 B7 9 11 OE B6 8 12 A8 B5 7 13 A7 B4 6 14 A6 B3 5 15 A5 B2 4 16 A4 B1 I/O 5 MOTOROLA MC74VHC245 OUTLINE DIMENSIONS DW SUFFIX PLASTIC SOIC PACKAGE CASE 751D-04 ISSUE E NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: MILLIMETER. 3. DIMENSIONS A AND B DO NOT INCLUDE MOLD PROTRUSION. 4. MAXIMUM MOLD PROTRUSION 0.150 (0.006) PER SIDE. 5. DIMENSION D DOES NOT INCLUDE DAMBAR PROTRUSION. ALLOWABLE DAMBAR PROTRUSION SHALL BE 0.13 (0.005) TOTAL IN EXCESS OF D DIMENSION AT MAXIMUM MATERIAL CONDITION. -A- 20 11 -B- 10X P 0.010 (0.25) 1 M B M 10 20X D 0.010 (0.25) T A M B S DIM A B C D F G J K M P R J S F R X 45 _ C -T- G 18X SEATING PLANE MILLIMETERS MIN MAX 12.65 12.95 7.40 7.60 2.35 2.65 0.35 0.49 0.50 0.90 1.27 BSC 0.25 0.32 0.10 0.25 0_ 7_ 10.05 10.55 0.25 0.75 INCHES MIN MAX 0.499 0.510 0.292 0.299 0.093 0.104 0.014 0.019 0.020 0.035 0.050 BSC 0.010 0.012 0.004 0.009 0_ 7_ 0.395 0.415 0.010 0.029 M K DT SUFFIX PLASTIC TSSOP PACKAGE CASE 948E-02 ISSUE A 20X 0.15 (0.006) T U K REF 0.10 (0.004) S M T U S V S K K1 2X L/2 20 IIII IIII IIII 11 J J1 B -U- L PIN 1 IDENT SECTION N-N 1 10 0.25 (0.010) N 0.15 (0.006) T U S NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: MILLIMETER. 3. DIMENSION A DOES NOT INCLUDE MOLD FLASH, PROTRUSIONS OR GATE BURRS. MOLD FLASH OR GATE BURRS SHALL NOT EXCEED 0.15 (0.006) PER SIDE. 4. DIMENSION B DOES NOT INCLUDE INTERLEAD FLASH OR PROTRUSION. INTERLEAD FLASH OR PROTRUSION SHALL NOT EXCEED 0.25 (0.010) PER SIDE. 5. DIMENSION K DOES NOT INCLUDE DAMBAR PROTRUSION. ALLOWABLE DAMBAR PROTRUSION SHALL BE 0.08 (0.003) TOTAL IN EXCESS OF THE K DIMENSION AT MAXIMUM MATERIAL CONDITION. 6. TERMINAL NUMBERS ARE SHOWN FOR REFERENCE ONLY. 7. DIMENSION A AND B ARE TO BE DETERMINED AT DATUM PLANE -W-. M A -V- N F DETAIL E -W- C D G H DETAIL E 0.100 (0.004) -T- SEATING DIM A B C D F G H J J1 K K1 L M MILLIMETERS MIN MAX 6.40 6.60 4.30 4.50 --- 1.20 0.05 0.15 0.50 0.75 0.65 BSC 0.27 0.37 0.09 0.20 0.09 0.16 0.19 0.30 0.19 0.25 6.40 BSC 0_ 8_ INCHES MIN MAX 0.252 0.260 0.169 0.177 --- 0.047 0.002 0.006 0.020 0.030 0.026 BSC 0.011 0.015 0.004 0.008 0.004 0.006 0.007 0.012 0.007 0.010 0.252 BSC 0_ 8_ PLANE MOTOROLA 6 VHC Data - Advanced CMOS Logic DL203 -- Rev 1 MC74VHC245 OUTLINE DIMENSIONS M SUFFIX PLASTIC SOIC EIAJ PACKAGE CASE 967-01 ISSUE O 20 NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: MILLIMETER. 3. DIMENSIONS D AND E DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS AND ARE MEASURED AT THE PARTING LINE. MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.15 (0.006) PER SIDE. 4. TERMINAL NUMBERS ARE SHOWN FOR REFERENCE ONLY. 5. THE LEAD WIDTH DIMENSION (b) DOES NOT INCLUDE DAMBAR PROTRUSION. ALLOWABLE DAMBAR PROTRUSION SHALL BE 0.08 (0.003) TOTAL IN EXCESS OF THE LEAD WIDTH DIMENSION AT MAXIMUM MATERIAL CONDITION. DAMBAR CANNOT BE LOCATED ON THE LOWER RADIUS OR THE FOOT. MINIMUM SPACE BETWEEN PROTRUSIONS AND ADJACENT LEAD TO BE 0.46 ( 0.018). LE 11 Q1 E HE 1 M_ L 10 DETAIL P Z D VIEW P e A c A1 b 0.13 (0.005) M 0.10 (0.004) DIM A A1 b c D E e HE L LE M Q1 Z MILLIMETERS MIN MAX --- 2.05 0.05 0.20 0.35 0.50 0.18 0.27 12.35 12.80 5.10 5.45 1.27 BSC 7.40 8.20 0.50 0.85 1.10 1.50 10 _ 0_ 0.70 0.90 --- 0.81 INCHES MIN MAX --- 0.081 0.002 0.008 0.014 0.020 0.007 0.011 0.486 0.504 0.201 0.215 0.050 BSC 0.291 0.323 0.020 0.033 0.043 0.059 10 _ 0_ 0.028 0.035 --- 0.032 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. 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