DM74ALS241AN

DM74ALS240A, DM74ALS241A Octal 3-STATE Bus Driver tm Features General Description ■ Advanced low power oxide-isolated ion-implanted These octal 3-STATE bus drivers are designed to provide the designer with flexibility in implementing a bus interface with memory, microprocessor, or communication systems. The output 3-STATE gating control is organized into two separate groups of four buffers. The DM74ALS240A control inputs symmetrically enable the respective outputs when set logic LOW, while the DM74ALS241A has complementary enable gating. The 3-STATE circuitry contains a feature that maintains the buffer outputs in 3-STATE (high impedance state) during power supply ramp-up or ramp-down. This eliminates bus glitching problems that arise during power-up and power-down. ■ ■ ■ ■ ■ ■ Schottky TTL process Functional and pin compatible with the DM74LS counterpart Improved switching performance with less power dissipation compared with the DM74LS counterpart Switching response specified into 500Ω and 50pF load Switching response specifications guaranteed over full temperature and VCC supply range PNP input design reduces input loading Low level drive current: 74ALS = 24mA Ordering Information Order Number Package Number Package Description DM74ALS240AWM M20B 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide DM74ALS240ASJ M20D 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide DM74ALS240AN N20A 20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide DM74ALS241AWM M20B 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code. Connection Diagram DM74ALS240A ©1986 Fairchild Semiconductor Corporation DM74ALS240A, DM74ALS241A Rev. 1.3 DM74ALS241A www.fairchildsemi.com DM74ALS240A, DM74ALS241A Octal 3-STATE Bus Driver September 2007 DM74ALS240A Input DM74ALS241A Output Input Output Input Output G A Y 1G 1A Y 2G 2A Y L L H L L L H L L L H L L H H H H H H X Z H X Z L X Z Logic Diagrams DM74ALS240A ©1986 Fairchild Semiconductor Corporation DM74ALS240A, DM74ALS241A Rev. 1.3 DM74ALS241A www.fairchildsemi.com 2 DM74ALS240A, DM74ALS241A Octal 3-STATE Bus Driver Function Tables 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 VCC VI Parameter Rating Supply Voltage 7V Input Voltage 7V Voltage Applied to Disabled Output TA 5.5V Operating Free Air Temperature Range TSTG Storage Temperature Range θJA Typical Thermal Resistance 0°C to +70°C –65°C to +150°C N Package 60.5°C/W M Package 79.8°C/W Recommended Operating Conditions 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 Parameter Supply Voltage Min. Typ. Max. Units 4.5 5 5.5 V VIH HIGH Level Input Voltage VIL LOW Level Input Voltage 0.8 V IOH HIGH Level Output Current –15 mA IOL LOW Level Output Current 24 mA TA Operating Free Air Temperature 70 °C ©1986 Fairchild Semiconductor Corporation DM74ALS240A, DM74ALS241A Rev. 1.3 2 0 V www.fairchildsemi.com 3 DM74ALS240A, DM74ALS241A Octal 3-STATE Bus Driver Absolute Maximum Ratings Over recommended operating free-air temperature range (unless otherwise specified). Symbol Parameter VIK Input Clamp Voltage VOH HIGH Level Output Voltage Conditions Min. Typ. Max. VCC = 4.5V, II = –18mA –1.5 VCC = 4.5V to 5.5V, IOH = –0.4mA VCC = 4.5V VCC – 2 IOH = –3mA 2.4 IOH = Max. 2 Units V V VOL LOW Level Output Voltage VCC = 4.5V, IOL = Max. 0.5 V II Input Current at Max. Input Voltage VCC = 5.5V, VI = 7V 0.1 mA IIH HIGH Level Input Current VCC = 5.5V, VI = 2.7V 20 µA IIL LOW Level Input Current VCC = 5.5V, VIL = 0.4V IO Output Drive Current VCC = 5.5V, VO = 2.25V IOZH HIGH Level 3-STATE Output Current IOZL ICC 0.35 –0.1 mA –112 mA VCC = 5.5V, VO = 2.7V 20 µA LOW Level 3-STATE Output Current VCC = 5.5V, VO = 0.4V –20 µA Supply Current VCC = 5.5V, ALS240A, Outputs HIGH 4 10 mA Outputs LOW 13 23 Outputs 3-STATE 14 25 VCC = 5.5V, ALS241A, Outputs HIGH 9 15 Outputs LOW 15 26 Outputs 3-STATE 17 30 ©1986 Fairchild Semiconductor Corporation DM74ALS240A, DM74ALS241A Rev. 1.3 –30 www.fairchildsemi.com 4 DM74ALS240A, DM74ALS241A Octal 3-STATE Bus Driver Electrical Characteristics Symbol Parameter tPLH Propagation Delay Time, LOW-to-HIGH Level Output tPHL Propagation Delay Time, HIGH-to-LOW Level Output tPZH Output Enable Time to HIGH Level Output tPZL Output Enable Time to LOW Level Output tPHZ Output Disable Time from HIGH Level Output tPLZ Output Disable Time from LOW Level Output Conditions VCC = 4.5V to 5.5V, CL = 50pF, R1 = 500Ω, R2 = 500Ω, TA = Min. to Max. From (Input) To (Output) Min. Max. Units A Y 2 9 ns 2 9 ns 3 13 ns 3 18 ns 2 10 ns 3 12 ns G G Y Y Switching Characteristics DM74ALS241A Over recommended operating free air temperature range. Symbol tPLH tPHL tPZH Parameter Conditions VCC = 4.5V to 5.5V, CL = 50pF, R1 = 500Ω, Propagation Delay Time, R2 = 500Ω, HIGH-to-LOW Level Output T = Output Enable Time to HIGH A Min. to Max. Level Output Propagation Delay Time, LOW-to-HIGH Level Output tPZL Output Enable Time to HIGH Level Output tPHZ Output Disable Time to HIGH Level Output tPLZ Output Disable Time to LOW Level Output tPZH Output Enable Time to HIGH Level Output tPZL Output Enable Time to LOW Level Output tPHZ Output Disable Time from HIGH Level Output tPLZ Output Disable Time from LOW Level Output ©1986 Fairchild Semiconductor Corporation DM74ALS240A, DM74ALS241A Rev. 1.3 From (Input) To (Output) Min. Max. Units A Y 3 11 ns 3 10 ns 3 21 ns 3 21 ns 2 10 ns 3 15 ns 7 21 ns 7 21 ns 2 10 ns 3 15 ns 1G 1G 2G 2G Y Y Y Y www.fairchildsemi.com 5 DM74ALS240A, DM74ALS241A Octal 3-STATE Bus Driver Switching Characteristics DM74ALS240A Over recommended operating free air temperature range. DM74ALS240A, DM74ALS241A Octal 3-STATE Bus Driver 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 ©1986 Fairchild Semiconductor Corporation DM74ALS240A, DM74ALS241A Rev. 1.3 www.fairchildsemi.com 6 DM74ALS240A, DM74ALS241A Octal 3-STATE Bus Driver 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 ©1986 Fairchild Semiconductor Corporation DM74ALS240A, DM74ALS241A Rev. 1.3 www.fairchildsemi.com 7 DM74ALS240A, DM74ALS241A Octal 3-STATE Bus Driver Physical Dimensions (Continued) Dimensions are in inches (millimeters) unless otherwise noted. Figure 3. 20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide Package Number N20A ©1986 Fairchild Semiconductor Corporation DM74ALS240A, DM74ALS241A Rev. 1.3 www.fairchildsemi.com 8 ACEx® Build it Now™ CorePLUS™ CROSSVOLT™ CTL™ Current Transfer Logic™ EcoSPARK® Power247® POWEREDGE® Power-SPM™ PowerTrench® Programmable Active Droop™ QFET® QS™ QT Optoelectronics™ Quiet Series™ RapidConfigure™ SMART START™ SPM® STEALTH™ SuperFET™ SuperSOT™-3 SuperSOT™-6 Green FPS™ Green FPS™ e-Series™ GTO™ i-Lo™ IntelliMAX™ ISOPLANAR™ MegaBuck™ MICROCOUPLER™ MicroFET™ MicroPak™ MillerDrive™ Motion-SPM™ OPTOLOGIC® OPTOPLANAR® ® Fairchild® Fairchild Semiconductor® FACT Quiet Series™ FACT® FAST® FastvCore™ FPS™ FRFET® Global Power ResourceSM ® PDP-SPM™ Power220® SuperSOT™-8 SyncFET™ The Power Franchise® TinyBoost™ TinyBuck™ TinyLogic® TINYOPTO™ TinyPower™ TinyPWM™ TinyWire™ µSerDes™ UHC® UniFET™ VCX™ 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 Advance Information Formative or In Design This datasheet contains the design specifications for product development. Specifications may change in any manner without notice. Definition 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. I31 ©1986 Fairchild Semiconductor Corporation DM74ALS240A, DM74ALS241A Rev. 1.3 www.fairchildsemi.com 9 DM74ALS240A, DM74ALS241A Octal 3-STATE Bus Driver TRADEMARKS The following are registered and unregistered trademarks and service marks Fairchild Semiconductor owns or is authorized to use and is not intended to be an exhaustive list of all such trademarks.