74VHCT540A Octal Buffer/Line Driver with 3-STATE Outputs tm Features General Description ■ High Speed: tPD = 5.4ns (Typ.) at VCC = 5V ■ Low Power Dissipation: ICC = 4µA (Max.) at TA = 25°C The VHCT540A is an advanced high-speed CMOS device fabricated with silicon gate CMOS technology. It achieves the high-speed operation similar to equivalent Bipolar Schottky TTL while maintaining the CMOS low power dissipation. ■ Power down protection is provided on all inputs and outputs Pin and function compatible with 74HCT540 ■ The VHCT540A is an octal buffer/line driver designed to be employed as memory and address drivers, clock drivers and bus oriented transmitter/receivers. This device is similar in function to the VHCT240A while providing flow-through architecture (inputs on opposite side from outputs). This pinout arrangement makes this device especially useful as an output port for microprocessors, allowing ease of layout and greater PC board density. Protection circuits ensure that 0V to 7V can be applied to the input and output(1) pins without regard to the supply voltage. This device can be used to interface 3V to 5V systems and two supply systems such as battery backup. This circuit prevents device destruction due to mismatched supply and input voltages. Note: 1. Outputs in OFF-State. Ordering Information Order Number 74VHCT540AM 74VHCT540ASJ 74VHCT540AMTC Package Number Package Dissipation M20B 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide M20D 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide 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 JEDEC J-STD-020B. ©1997 Fairchild Semiconductor Corporation 74VHCT540A Rev. 1.3 www.fairchildsemi.com 74VHCT540A Octal Buffer/Line Driver with 3-STATE Outputs May 2007 Logic Symbol IEEE/IEC Pin Description Pin Names Description OE1, OE2 3-STATE Output Enable Inputs I0–I7 Inputs O0–O7 3-STATE Outputs Truth Table Inputs OE1 OE2 I Outputs L L H L H X X Z X H X Z L L L H H = HIGH Voltage Level L = LOW Voltage Level X = Immaterial Z = High Impedance ©1997 Fairchild Semiconductor Corporation 74VHCT540A Rev. 1.3 www.fairchildsemi.com 2 74VHCT540A 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 +7.0V Note 3 –0.5V to VCC + 0.5V IIK Input Diode Current –20mA IOK Output Diode Current(4) ±20mA IOUT DC Output Current ±25mA ICC DC VCC / GND Current TSTG TL ±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 5.5V Note 3 0V to VCC TOPR Operating Temperature –40°C to +85°C t r, t f Input Rise and Fall Time, VCC = 5.0V ± 0.5V 0ns/V ~ 20ns/V Notes: 2. When outputs are in OFF-STATE or when VCC = 0V. 3. HIGH or LOW state. IOUT absolute maximum rating must be observed. 4. VOUT < GND, VOUT > VCC (outputs active). 5. Unused inputs must be held HIGH or LOW. They may not float. ©1997 Fairchild Semiconductor Corporation 74VHCT540A Rev. 1.3 www.fairchildsemi.com 3 74VHCT540A Octal Buffer/Line Driver with 3-STATE Outputs Absolute Maximum Ratings TA = –40°C to +85°C TA = 25°C Symbol Parameter VCC (V) VIH HIGH Level Input Voltage 4.5–5.5 VIL LOW Level Input Voltage 4.5–5.5 VOH 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 VOL Conditions Min. Typ. Max. 2.0 Min. Max. Units 2.0 V 0.8 VIN = VIH IOH = –50µA or VIL IOH = –8mA 4.4 0.8 4.5 4.4 3.94 VIN = VIH IOL = 50µA or VIL IOL = 8mA V V 3.80 0.1 0.1 0.36 0.44 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 Inputs = VCC or GND 1.35 1.50 mA IOFF Output Leakage Current VOUT = 5.5V 0.5 5.0 µA 0 0.0 V Noise Characteristics TA = 25°C Symbol Parameter VCC (V) Quiet Output Maximum Dynamic VOL 5.0 VOLV(6) Quiet Output Minimum Dynamic VOL VIHD(6) VILD(6) VOLP (6) Conditions Typ. Limits Units CL = 50pF 1.2 1.6 V 5.0 CL = 50pF –1.2 1.6 V Minimum HIGH Level Dynamic Input Voltage 5.0 CL = 50pF 2.0 V Maximum HIGH Level Dynamic Input Voltage 5.0 CL = 50pF 0.8 V Note: 6. Parameter guaranteed by design. ©1997 Fairchild Semiconductor Corporation 74VHCT540A Rev. 1.3 www.fairchildsemi.com 4 74VHCT540A 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 5.4 7.4 1.0 8.5 CL = 50pF 5.9 8.4 1.0 9.5 CL = 15pF 8.3 11.3 1.0 13.0 CL = 50pF 8.8 12.3 1.0 14.0 5.0 ± 0.5 RL = 1kΩ CL = 50pF 9.4 11.9 1.0 13.5 ns 5.0 ± 0.5 (7) CL = 50pF 1.0 1.0 ns 10 10 pF 5.0 ± 0.5 3-STATE Output Enable Time 5.0 ± 0.5 RL = 1kΩ 3-STATE Output Disable Time Input Capacitance VCC = Open COUT Output Capacitance CPD Power Dissipation Capacitance VCC (8) CIN Typ. Max. Min. Max. Units CL = 15pF Propagation Delay Time tOSLH, tOSHL Output to Output Skew Min. = 5.0V 4 ns ns 9 pF 19 pF Notes: 7. Parameter guaranteed by design. tOSLH = |tPLHmax – tPLHmin|; tOSLH = |tPHLmax – tPHLmin| 8. CPD is defined as the value of the internal equivalent capacitance which is calculated from the operating c urrent consumption without load. Average operating current can be obtained by the equation: ICC (Opr.) = CPD • VCC • fIN + ICC / 8 (per bit). ©1997 Fairchild Semiconductor Corporation 74VHCT540A Rev. 1.3 www.fairchildsemi.com 5 74VHCT540A Octal Buffer/Line Driver with 3-STATE Outputs AC Electrical Characteristics 74VHCT540A 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 74VHCT540A Rev. 1.3 www.fairchildsemi.com 6 74VHCT540A 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 74VHCT540A Rev. 1.3 www.fairchildsemi.com 7 74VHCT540A 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 74VHCT540A 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 74VHCT540A Rev. 1.3 www.fairchildsemi.com 9 74VHCT540A 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.