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| DM74ALS240A, DM74ALS241A Octal 3-STATE Bus Driver DM74ALS240A, DM74ALS241A Octal 3-STATE Bus Driver Features Advanced low power oxide-isolated ion-implanted September 2007 tm General Description 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 500 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 DM74ALS240AWM DM74ALS240ASJ DM74ALS240AN DM74ALS241AWM Package Number M20B M20D N20A M20B Package Description 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide 20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide 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 DM74ALS241A (c)1986 Fairchild Semiconductor Corporation DM74ALS240A, DM74ALS241A Rev. 1.3 www.fairchildsemi.com DM74ALS240A, DM74ALS241A Octal 3-STATE Bus Driver Function Tables DM74ALS240A DM74ALS241A Input G L L H Output A L H X Input 1G L L H Output Y L H Z L H X H H L Input 2G 2A L H X Output Y L H Z Y H L Z 1A Logic Diagrams DM74ALS240A DM74ALS241A (c)1986 Fairchild Semiconductor Corporation DM74ALS240A, DM74ALS241A Rev. 1.3 www.fairchildsemi.com 2 DM74ALS240A, DM74ALS241A Octal 3-STATE Bus Driver Absolute Maximum Ratings 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 TA TSTG JA Supply Voltage Input Voltage Parameter Rating 7V 7V 5.5V 0C to +70C -65C to +150C 60.5C/W 79.8C/W Voltage Applied to Disabled Output Operating Free Air Temperature Range Storage Temperature Range Typical Thermal Resistance N Package M Package 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 VIH VIL IOH IOL TA Supply Voltage Parameter HIGH Level Input Voltage LOW Level Input Voltage HIGH Level Output Current LOW Level Output Current Operating Free Air Temperature Min. 4.5 2 Typ. 5 Max. 5.5 0.8 -15 24 Units V V V mA mA C 0 70 (c)1986 Fairchild Semiconductor Corporation DM74ALS240A, DM74ALS241A Rev. 1.3 www.fairchildsemi.com 3 DM74ALS240A, DM74ALS241A Octal 3-STATE Bus Driver Electrical Characteristics Over recommended operating free-air temperature range (unless otherwise specified). Symbol VIK VOH Parameter Input Clamp Voltage HIGH Level Output Voltage Conditions VCC = 4.5V, II = -18mA VCC = 4.5V to 5.5V, IOH = -0.4mA VCC = 4.5V IOH = -3mA IOH = Max. Min. VCC - 2 2.4 2 Typ. Max. -1.5 Units V V VOL II IIH IIL IO IOZH IOZL ICC LOW Level Output Voltage Input Current at Max. Input Voltage HIGH Level Input Current LOW Level Input Current Output Drive Current HIGH Level 3-STATE Output Current LOW Level 3-STATE Output Current Supply Current VCC = 4.5V, IOL = Max. VCC = 5.5V, VI = 7V VCC = 5.5V, VI = 2.7V VCC = 5.5V, VIL = 0.4V VCC = 5.5V, VO = 2.25V VCC = 5.5V, VO = 2.7V VCC = 5.5V, VO = 0.4V VCC = 5.5V, ALS240A, Outputs HIGH Outputs LOW Outputs 3-STATE VCC = 5.5V, ALS241A, Outputs HIGH Outputs LOW Outputs 3-STATE -30 0.35 0.5 0.1 20 -0.1 -112 20 -20 V mA A mA mA A A mA 4 13 14 9 15 17 10 23 25 15 26 30 (c)1986 Fairchild Semiconductor Corporation DM74ALS240A, DM74ALS241A Rev. 1.3 www.fairchildsemi.com 4 DM74ALS240A, DM74ALS241A Octal 3-STATE Bus Driver Switching Characteristics DM74ALS240A Over recommended operating free air temperature range. Symbol tPLH tPHL tPZH tPZL tPHZ tPLZ Parameter Propagation Delay Time, LOW-to-HIGH Level Output Propagation Delay Time, HIGH-to-LOW Level Output Output Enable Time to HIGH Level Output Output Enable Time to LOW Level Output Output Disable Time from HIGH Level Output Output Disable Time from LOW Level Output Conditions VCC = 4.5V to 5.5V, CL = 50pF, R1 = 500, R2 = 500, TA = Min. to Max. From (Input) A To (Output) Y Min. 2 2 Max. 9 9 13 18 10 12 Units ns ns ns ns ns ns G Y 3 3 G Y 2 3 Switching Characteristics DM74ALS241A Over recommended operating free air temperature range. Symbol tPLH tPHL tPZH tPZL tPHZ tPLZ tPZH tPZL tPHZ tPLZ Parameter Propagation Delay Time, LOW-to-HIGH Level Output Conditions From (Input) A To (Output) Y Min. 3 3 Max. 11 10 21 21 10 15 21 21 10 15 Units ns ns ns ns ns ns ns ns ns ns VCC = 4.5V to 5.5V, CL = 50pF, R1 = 500, Propagation Delay Time, HIGH-to-LOW Level Output R2 = 500, Output Enable Time to HIGH TA = Min. to Max. Level Output Output Enable Time to HIGH Level Output Output Disable Time to HIGH Level Output Output Disable Time to LOW Level Output Output Enable Time to HIGH Level Output Output Enable Time to LOW Level Output Output Disable Time from HIGH Level Output Output Disable Time from LOW Level Output 1G Y 3 3 1G Y 2 3 2G Y 7 7 2G Y 2 3 (c)1986 Fairchild Semiconductor Corporation DM74ALS240A, DM74ALS241A Rev. 1.3 www.fairchildsemi.com 5 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 (c)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 (c)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 (c)1986 Fairchild Semiconductor Corporation DM74ALS240A, DM74ALS241A Rev. 1.3 www.fairchildsemi.com 8 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. ACEx(R) Build it NowTM CorePLUSTM CROSSVOLTTM CTLTM Current Transfer LogicTM EcoSPARK(R) (R) Fairchild(R) Fairchild Semiconductor(R) FACT Quiet SeriesTM FACT(R) FAST(R) FastvCoreTM FPSTM FRFET(R) Global Power ResourceSM Green FPSTM Green FPSTM e-SeriesTM GTOTM i-LoTM IntelliMAXTM ISOPLANARTM MegaBuckTM MICROCOUPLERTM MicroFETTM MicroPakTM MillerDriveTM Motion-SPMTM OPTOLOGIC(R) OPTOPLANAR(R) (R) PDP-SPMTM Power220(R) Power247(R) POWEREDGE(R) Power-SPMTM PowerTrench(R) Programmable Active DroopTM QFET(R) QSTM QT OptoelectronicsTM Quiet SeriesTM RapidConfigureTM SMART STARTTM SPM(R) STEALTHTM SuperFETTM SuperSOTTM-3 SuperSOTTM-6 SuperSOTTM-8 SyncFETTM The Power Franchise(R) TinyBoostTM TinyBuckTM TinyLogic(R) TINYOPTOTM TinyPowerTM TinyPWMTM TinyWireTM SerDesTM UHC(R) UniFETTM VCXTM 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. PRODUCT STATUS DEFINITIONS Definition of Terms Datasheet Identification Advance Information Preliminary Product Status Formative or In Design First Production Definition This datasheet contains the design specifications for product development. Specifications may change in any manner without notice. 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. This datasheet contains final specifications. Fairchild Semiconductor reserves the right to make changes at any time without notice to improve design. This datasheet contains specifications on a product that has been discontinued by Fairchild Semiconductor. The datasheet is printed for reference information only. Rev. I31 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. No Identification Needed Full Production Obsolete Not In Production (c)1986 Fairchild Semiconductor Corporation DM74ALS240A, DM74ALS241A Rev. 1.3 www.fairchildsemi.com 9 |
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