74VHCT245AM

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This literature is subject to all applicable copyright laws and is not for resale in any manner. 74VHCT245A Octal Buffer/Line Driver with 3-STATE Outputs tm Features General Description ■ High Speed: tPD = 5.4ns (Typ.) at VCC = 5V ■ Power Down Protection on Inputs and Outputs The VHCT245A 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 the CMOS low power dissipation. The VHCT245A is intended for bidirectional asynchronous communication between data busses. The direction of data transmission is determined by the level of the T/R input. The enable input can be used to disable the device so that the busses are effectively isolated. ■ Low Power Dissipation: ICC = 4µA (Max.) @ TA = 25°C ■ Pin and Function Compatible with 74HCT245 Protection circuits ensure that 0V to 7V can be applied to the input and output(1) pins without regard to the supply voltage. These circuits prevent device destruction due to mismatched supply and input/output voltages. This device can be used to interface 5V to 3V systems and two supply systems such as battery back up. Note: 1. Outputs in OFF-State Ordering Information Package Number Package Description 74VHCT245AM M20B 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide 74VHCT245ASJ M20D 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide Order Number 74VHCT245AMTC MTC20 20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide Surface mount packages are also available on Tape and Reel. Specify by appending the suffix letter “X” to the ordering number. Pb-Free package per JEDED J-STD-020B. ©1997 Fairchild Semiconductor Corporation 74VHCT245A Rev. 1.3 www.fairchildsemi.com 74VHCT245A Octal Buffer/Line Driver with 3-STATE Outputs May 2007 Logic Symbol IEEE/IEC Pin Description Pin Names Description OE Output Enable Input T/R Transmit/Receive Input A0–A7 Side A Inputs or 3-STATE Outputs B0–B7 Side B Inputs or 3-STATE Outputs Truth Table Inputs OE T/R Outputs L L Bus B Data to Bus A L H Bus A Data to Bus B H X HIGH-Z State H = HIGH Voltage Level L = LOW Voltage Level X = Immaterial ©1997 Fairchild Semiconductor Corporation 74VHCT245A Rev. 1.3 www.fairchildsemi.com 2 74VHCT245A Octal Buffer/Line Driver with 3-STATE Outputs Connection Diagram Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be operable above the recommended operating conditions and stressing the parts to these levels is not recommended. In addition, extended exposure to stresses above the recommended operating conditions may affect device reliability. The absolute maximum ratings are stress ratings only. Symbol Parameter Rating VCC Supply Voltage –0.5V to +7.0V VIN DC Input Voltage –0.5V to +7.0V VOUT DC Output Voltage Note 2 –0.5V to VCC + 0.5V Note 3 –0.5V to +7.0V IIK Input Diode Current –20mA IOK Output Diode Current(4) ±20mA IOUT DC Output Current ±25mA ICC TSTG TL DC VCC / GND Current ±75mA Storage Temperature –65°C to +150°C Lead Temperature (Soldering, 10 seconds) 260°C Recommended Operating Conditions(5) The Recommended Operating Conditions table defines the conditions for actual device operation. Recommended operating conditions are specified to ensure optimal performance to the datasheet specifications. Fairchild does not recommend exceeding them or designing to absolute maximum ratings. Symbol VCC VIN VOUT Parameter Rating Supply Voltage 4.5V to +5.5V Input Voltage 0V to +5.5V Output Voltage Note 2 0V to VCC Note 3 0V to +5.5V TOPR Operating Temperature –40°C to +85°C tr , tf Input Rise and Fall Time, VCC = 5.0V ± 0.5V 0ns/V ~ 20ns/V Notes: 2. HIGH or LOW state. IOUT absolute maximum rating must be observed. 3. When outputs are in OFF-State or when VCC = 0V. 4. VOUT < GND, VOUT > VCC (Outputs Active). 5. Unused inputs must be held HIGH or LOW. They may not float. ©1997 Fairchild Semiconductor Corporation 74VHCT245A Rev. 1.3 www.fairchildsemi.com 3 74VHCT245A Octal Buffer/Line Driver with 3-STATE Outputs Absolute Maximum Ratings TA = –40°C to +85°C TA = 25°C Symbol Parameter VCC (V) Conditions Min. Typ. Max. Min. Max. Units VIH HIGH Level Input Voltage 4.5 2.0 5.5 2.0 VIL LOW Level Input Voltage 4.5 0.8 0.8 5.5 0.8 0.8 HIGH Level Output Voltage 4.5 LOW Level Output Voltage 4.5 IOZ 3-STATE Output Off-State Current 5.5 IIN Input Leakage Current ICC VOH VOL VIN = VIH IOH = –50µA or VIL IOH = –8mA 4.40 2.0 2.0 4.50 V 4.40 3.94 VIN = VIH IOL = 50µA or VIL IOL = 8mA V V 3.80 0.0 0.1 0.1 0.36 0.44 V VIN = VIH or VIL, VOUT = VCC or GND ±0.25 ±2.5 µA 0–5.5 VIN = 5.5V or GND ±0.1 ±1.0 µA Quiescent Supply Current 5.5 VIN = VCC or GND 4.0 40.0 µA ICCT Maximum ICC /Input 5.5 VIN = 3.4V, Other Input = VCC or GND 1.35 1.50 mA IOFF Output Leakage Current (Power Down State) 0.0 VOUT = 5.5V 0.5 5.0 µA Noise Characteristics TA = 25°C Symbol Parameter VCC (V) Conditions Typ. Limits Units Quiet Output Maximum Dynamic VOL 5.0 CL = 50pF 1.2 1.6 V VOLV(6) Quiet Output Minimum Dynamic VOL 5.0 CL = 50pF –1.2 –1.6 V VIHD(6) Minimum HIGH Level Dynamic Input Voltage 5.0 CL = 50pF 2.0 V VILD(6) Maximum LOW Level Dynamic Input Voltage 5.0 CL = 50pF 0.8 V VOLP (6) Note: 6. Parameter guaranteed by design. ©1997 Fairchild Semiconductor Corporation 74VHCT245A Rev. 1.3 www.fairchildsemi.com 4 74VHCT245A Octal Buffer/Line Driver with 3-STATE Outputs DC Electrical Characteristics TA = –40°C to +85°C TA = 25°C Symbol tPLH, tPHL tPZL, tPZH tPLZ, tPHZ Parameter VCC (V) Conditions Typ. Max. Min. Max. Units CL = 15pF 4.9 7.7 1.0 8.5 CL = 50pF 5.4 8.7 1.0 9.5 3-STATE Output Enable Time 5.0 ± 0.5 RL = 1kΩ CL = 15pF 9.4 13.8 1.0 15.0 CL = 50pF 9.9 14.8 1.0 16.0 3-STATE Output Disable Time 5.0 ± 0.5 RL = 1kΩ CL = 50pF 10.1 15.4 1.0 16.5 ns 1.0 1.0 ns 10 10 pF Propagation Delay Time 5.0 ± 0.5 tOSLH, tOSHL Output to Output Skew 5.0 ± 0.5 (7) Input Capacitance VCC = Open COUT Output Capacitance CPD Power Dissipation Capacitance VCC (8) CIN Min. = 5.0V 4 ns ns 13 pF 16 pF Notes: 7. Parameter guaranteed by design. tOSLH = |tPLH max – tPLH min|; tOSHL = |tPHL max – tPHL min| 8. 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 F/F). The total CPD when n pcs. of the Octal D Flip-Flop operates can be calculated by the equation: CPD (total) = 20 + 12n. ©1997 Fairchild Semiconductor Corporation 74VHCT245A Rev. 1.3 www.fairchildsemi.com 5 74VHCT245A Octal Buffer/Line Driver with 3-STATE Outputs AC Electrical Characteristics 74VHCT245A Octal Buffer/Line Driver with 3-STATE Outputs Physical Dimensions Dimensions are in millimeters unless otherwise noted. Figure 1. 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide Package Number M20B ©1997 Fairchild Semiconductor Corporation 74VHCT245A Rev. 1.3 www.fairchildsemi.com 6 74VHCT245A Octal Buffer/Line Driver with 3-STATE Outputs Physical Dimensions (Continued) Dimensions are in millimeters unless otherwise noted. Figure 2. 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide Package Number M20D ©1997 Fairchild Semiconductor Corporation 74VHCT245A Rev. 1.3 www.fairchildsemi.com 7 74VHCT245A Octal Buffer/Line Driver with 3-STATE Outputs Physical Dimensions (Continued) Dimensions are in millimeters unless otherwise noted. Figure 3. 20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide Package Number MTC20 ©1997 Fairchild Semiconductor Corporation 74VHCT245A Rev. 1.3 www.fairchildsemi.com 8 ® ACEx Across the board. Around the world.™ ActiveArray™ Bottomless™ Build it Now™ CoolFET™ CorePLUS™ CROSSVOLT™ CTL™ Current Transfer Logic™ DOME™ 2 E CMOS™ ® EcoSPARK EnSigna™ FACT Quiet Series™ ® FACT ® FAST FASTr™ FPS™ ® FRFET GlobalOptoisolator™ GTO™ HiSeC™ i-Lo™ ImpliedDisconnect™ IntelliMAX™ ISOPLANAR™ MICROCOUPLER™ MicroPak™ MICROWIRE™ Motion-SPM™ MSX™ MSXPro™ OCX™ OCXPro™ ® OPTOLOGIC ® OPTOPLANAR PACMAN™ PDP-SPM™ POP™ ® Power220 ® Power247 PowerEdge™ PowerSaver™ Power-SPM™ ® PowerTrench Programmable Active Droop™ ® QFET QS™ QT Optoelectronics™ Quiet Series™ RapidConfigure™ RapidConnect™ ScalarPump™ SMART START™ ® SPM STEALTH™ SuperFET™ SuperSOT™-3 SuperSOT™-6 SuperSOT™-8 SyncFET™ TCM™ ® The Power Franchise TinyBuck™ ® TinyLogic TINYOPTO™ TinyPower™ TinyWire™ TruTranslation™ µSerDes™ ® UHC UniFET™ VCX™ Wire™ ™ TinyBoost™ DISCLAIMER FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION, OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS. THESE SPECIFICATIONS DO NOT EXPAND THE TERMS OF FAIRCHILD’S WORLDWIDE TERMS AND CONDITIONS, SPECIFICALLY THE WARRANTY THEREIN, WHICH COVERS THESE PRODUCTS. LIFE SUPPORT POLICY FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body or (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury of the user. 2. A critical component in any component of a life support, device, or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. PRODUCT STATUS DEFINITIONS Definition of Terms Datasheet Identification Product Status Definition Advance Information Formative or In Design This datasheet contains the design specifications for product development. Specifications may change in any manner without notice. Preliminary First Production This datasheet contains preliminary data; supplementary data will be published at a later date. Fairchild Semiconductor reserves the right to make changes at any time without notice to improve design. No Identification Needed Full Production This datasheet contains final specifications. Fairchild Semiconductor reserves the right to make changes at any time without notice to improve design. Obsolete Not In Production This datasheet contains specifications on a product that has been discontinued by Fairchild Semiconductor. The datasheet is printed for reference information only. Rev. I27 ©1997 Fairchild Semiconductor Corporation 74VHCT245A Rev. 1.3 www.fairchildsemi.com 9 74VHCT245A Octal Buffer/Line Driver with 3-STATE Outputs TRADEMARKS The following are registered and unregistered trademarks Fairchild Semiconductor owns or is authorized to use and is not intended to be an exhaustive list of all such trademarks. ON Semiconductor and are trademarks of Semiconductor Components Industries, LLC dba ON Semiconductor or its subsidiaries in the United States and/or other countries. ON Semiconductor owns the rights to a number of patents, trademarks, copyrights, trade secrets, and other intellectual property. A listing of ON Semiconductor’s product/patent coverage may be accessed at www.onsemi.com/site/pdf/Patent−Marking.pdf. ON Semiconductor reserves the right to make changes without further notice to any products herein. ON Semiconductor makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does ON Semiconductor 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. Buyer is responsible for its products and applications using ON Semiconductor products, including compliance with all laws, regulations and safety requirements or standards, regardless of any support or applications information provided by ON Semiconductor. “Typical” parameters which may be provided in ON Semiconductor 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. ON Semiconductor does not convey any license under its patent rights nor the rights of others. ON Semiconductor products are not designed, intended, or authorized for use as a critical component in life support systems or any FDA Class 3 medical devices or medical devices with a same or similar classification in a foreign jurisdiction or any devices intended for implantation in the human body. Should Buyer purchase or use ON Semiconductor products for any such unintended or unauthorized application, Buyer shall indemnify and hold ON Semiconductor 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 ON Semiconductor was negligent regarding the design or manufacture of the part. ON Semiconductor is an Equal Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner. 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