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| SN74LS245 Octal Bus Transceiver The SN74LS245 is an Octal Bus Transmitter/Receiver designed for 8-line asynchronous 2-way data communication between data buses. Direction Input (DR) controls transmission of Data from bus A to bus B or bus B to bus A depending upon its logic level. The Enable input (E) can be used to isolate the buses. http://onsemi.com * * * * Hysteresis Inputs to Improve Noise Immunity 2-Way Asynchronous Data Bus Communication Input Diodes Limit High-Speed Termination Effects ESD > 3500 Volts LOGIC AND CONNECTION DIAGRAMS DIP (TOP VIEW) VCC 20 E 19 B1 18 B2 17 B3 16 B4 15 B5 14 B6 13 B7 12 B8 11 LOW POWER SCHOTTKY 20 1 1 DIR 2 A1 3 A2 4 A3 5 A4 6 A5 7 A6 8 A7 9 A8 10 GND PLASTIC N SUFFIX CASE 738 TRUTH TABLE INPUTS OUTPUT E L L H DIR L H X Bus B Data to Bus A Bus A Data to Bus B Isolation 20 1 H = HIGH Voltage Level L = LOW Voltage Level X = Immaterial SOIC DW SUFFIX CASE 751D GUARANTEED OPERATING RANGES Symbol VCC TA IOH Parameter Supply Voltage Operating Ambient Temperature Range Output Current - High Min 4.75 0 Typ 5.0 25 Max 5.25 70 - 3.0 - 15 IOL Output Current - Low 24 Unit V C mA mA mA Device SN74LS245N SN74LS245DW Package 16 Pin DIP 16 Pin Shipping 1440 Units/Box 2500/Tape & Reel ORDERING INFORMATION (c) Semiconductor Components Industries, LLC, 1999 1 December, 1999 - Rev. 6 Publication Order Number: SN74LS245/D SN74LS245 DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified) Limits Symbol VIH VIL VT+-VT- VIK VO OH Parameter Input HIGH Voltage Input LOW Voltage Hysteresis Input Clamp Diode Voltage 2.4 Output HIGH Voltage 2.0 0.25 VO OL IOZH IOZL Output LOW Voltage 0.35 Output Off Current HIGH Output Off Current LOW A or B, DR or E IIH Input HIGH C I t Current t DR or E A or B IIL IOS Input LOW Current Output Short Circuit Current (Note 1) Power Supply Current Total, Output HIGH ICC Total, Output LOW Total at HIGH Z - 40 0.5 20 - 200 20 0.1 0.1 - 0.2 - 225 70 90 95 mA A VCC = MAX V A A A mA mA mA mA IOL = 24 mA 0.4 V V 0.2 0.4 - 0.65 3.4 - 1.5 Min 2.0 0.8 Typ Max Unit V V V V V Test Conditions Guaranteed Input HIGH Voltage for All Inputs Guaranteed Input LOW Voltage for All Inputs VCC = MIN VCC = MIN, IIN = - 18 mA VCC = MIN, IOH = - 3.0 mA VCC = MIN, IOH = MAX IOL = 12 mA VCC = VCC MIN, VIN = VIL or VIH per Truth Table VCC = MAX, VOUT = 2.7 V VCC = MAX, VOUT = 0.4 V VCC = MAX, VIN = 2.7 V VCC = MAX, VIN = 7.0 V VCC = MAX, VIN = 5.5 V VCC = MAX, VIN = 0.4 V VCC = MAX Note 1: Not more than one output should be shorted at a time, nor for more than 1 second. AC CHARACTERISTICS (TA = 25C, VCC = 5.0 V, TRISE / TFALL 6.0 ns) Limits Symbol tPLH tPHL tPZH tPZL tPLZ tPHZ Parameter Propagation Delay, Data to Output Output Enable Time to HIGH Level Output Enable Time to LOW Level Output Disable Time from LOW Level Output Disable Time from HIGH Level Min Typ 8.0 8.0 25 27 15 15 Max 12 12 40 40 25 25 Unit ns ns ns ns ns CL = 5.0 pF, RL = 667 CL = 45 pF, F, RL = 667 Test Conditions http://onsemi.com 2 SN74LS245 PACKAGE DIMENSIONS N SUFFIX PLASTIC PACKAGE CASE 738-03 ISSUE E -A- 20 11 NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: INCH. 3. DIMENSION L TO CENTER OF LEAD WHEN FORMED PARALLEL. 4. DIMENSION B DOES NOT INCLUDE MOLD FLASH. INCHES MIN MAX 1.010 1.070 0.240 0.260 0.150 0.180 0.015 0.022 0.050 BSC 0.050 0.070 0.100 BSC 0.008 0.015 0.110 0.140 0.300 BSC 0_ 15 _ 0.020 0.040 MILLIMETERS MIN MAX 25.66 27.17 6.10 6.60 3.81 4.57 0.39 0.55 1.27 BSC 1.27 1.77 2.54 BSC 0.21 0.38 2.80 3.55 7.62 BSC 0_ 15_ 0.51 1.01 B 1 10 C L -T- SEATING PLANE K M E G F D 20 PL N J 0.25 (0.010) M 20 PL 0.25 (0.010) TA M M TB M DIM A B C D E F G J K L M N D SUFFIX PLASTIC SOIC PACKAGE CASE 751D-05 ISSUE F D A 11 X 45 _ q NOTES: 1. DIMENSIONS ARE IN MILLIMETERS. 2. INTERPRET DIMENSIONS AND TOLERANCES PER ASME Y14.5M, 1994. 3. DIMENSIONS D AND E DO NOT INCLUDE MOLD PROTRUSION. 4. MAXIMUM MOLD PROTRUSION 0.15 PER SIDE. 5. DIMENSION B DOES NOT INCLUDE DAMBAR PROTRUSION. ALLOWABLE PROTRUSION SHALL BE 0.13 TOTAL IN EXCESS OF B DIMENSION AT MAXIMUM MATERIAL CONDITION. MILLIMETERS MIN MAX 2.35 2.65 0.10 0.25 0.35 0.49 0.23 0.32 12.65 12.95 7.40 7.60 1.27 BSC 10.05 10.55 0.25 0.75 0.50 0.90 0_ 7_ H M B M 20 10X 0.25 E 1 10 h 20X B 0.25 M B TA S B S A SEATING PLANE DIM A A1 B C D E e H h L L 18X e A1 q T C http://onsemi.com 3 SN74LS245 ON Semiconductor and are trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC 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 special, consequential or incidental damages. "Typical" parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including "Typicals" must be validated for each customer application by customer's technical experts. SCILLC does not convey any license under its patent rights nor the rights of others. SCILLC 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 SCILLC product could create a situation where personal injury or death may occur. Should Buyer purchase or use SCILLC products for any such unintended or unauthorized application, Buyer shall indemnify and hold SCILLC 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 SCILLC was negligent regarding the design or manufacture of the part. SCILLC is an Equal Opportunity/Affirmative Action Employer. PUBLICATION ORDERING INFORMATION North America Literature Fulfillment: Literature Distribution Center for ON Semiconductor P.O. Box 5163, Denver, Colorado 80217 USA Phone: 303-675-2175 or 800-344-3860 Toll Free USA/Canada Fax: 303-675-2176 or 800-344-3867 Toll Free USA/Canada Email: ONlit@hibbertco.com N. American Technical Support: 800-282-9855 Toll Free USA/Canada EUROPE: LDC for ON Semiconductor - European Support German Phone: (+1) 303-308-7140 (M-F 2:30pm to 5:00pm Munich Time) Email: ONlit-german@hibbertco.com French Phone: (+1) 303-308-7141 (M-F 2:30pm to 5:00pm Toulouse Time) Email: ONlit-french@hibbertco.com English Phone: (+1) 303-308-7142 (M-F 1:30pm to 5:00pm UK Time) Email: ONlit@hibbertco.com ASIA/PACIFIC: LDC for ON Semiconductor - Asia Support Phone: 303-675-2121 (Tue-Fri 9:00am to 1:00pm, Hong Kong Time) Toll Free from Hong Kong 800-4422-3781 Email: ONlit-asia@hibbertco.com JAPAN: ON Semiconductor, Japan Customer Focus Center 4-32-1 Nishi-Gotanda, Shinagawa-ku, Tokyo, Japan 141-8549 Phone: 81-3-5487-8345 Email: r14153@onsemi.com Fax Response Line: 303-675-2167 800-344-3810 Toll Free USA/Canada ON Semiconductor Website: http://onsemi.com For additional information, please contact your local Sales Representative. http://onsemi.com 4 SN74LS245/D |
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