54FCT240 Octal Buffer/Line Driver with TRI-STATE ® Outputs General Description Features The 54FCT240 is an octal buffer and line driver designed to be employed as a memory address driver, clock driver and bus oriented transmitter or receiver which provides improved PC board density. n Inverting TRI-STATE outputs drive bus lines or buffer memory address registers n Output sink capability of 32 mA, source capability of 12 mA n TTL input and output compatible levels n CMOS power consumption n Standard Microcircuit Drawing (SMD) 5962-8765501 Ordering Code: Military Package Package Description Number 54FCT240DMQB J20A 20-Lead Ceramic Dual-In-Line 54FCT240FMQB W20A 20-Lead Cerpak 54FCT240LMQB E20A 20-Lead Ceramic Leadless Chip Carrier, Type C Logic Symbol Connection Diagrams IEEE/IEC Pin Assignment for DIP and Flatpak DS100955-2 DS100955-1 Pin Names Pin Assignment for LCC Description OE1, OE2 TRI-STATE Output Enable Inputs I0–I7 Inputs O0–O7 Outputs DS100955-3 TRI-STATE ® is a registered trademark of National Semiconductor Corporation. FACT ® is a registered trademark of Fairchild Semiconductor Corporation. © 1999 National Semiconductor Corporation DS100955 www.national.com 54FCT240 Octal Buffer/Line Driver with TRI-STATE Outputs August 1998 54FCT240 Connection Diagrams (Continued) Inputs OE1 Outputs In (Pins 12, 14, 16, 18) L L H L H L H X Z Inputs OE2 Outputs In (Pins 3, 5, 7, 9) L L H L H L H X Z H = HIGH Voltage Level L = LOW Voltage Level X = Immaterial Z = High Impedance www.national.com 2 in the HIGH State Current Applied to Output in LOW State (Max) Storage Temperature Ambient Temperature under Bias Junction Temperature under Bias Ceramic VCC Pin Potential to Ground Pin Input Voltage (Note 1) Input Current (Note 1) Voltage Applied to Any Output in the Disabled or Power-off State −0.5V to VCC twice the rated IOL (mA) Recommended Operating Conditions −65˚C to +150˚C −55˚C to +125˚C Free Air Ambient Temperature Military Supply Voltage Military −55˚C to +175˚C −0.5V to +7.0V −0.5V to +7.0V −30 mA to +5.0 mA −55˚C to +125˚C +4.5V to +5.5V Note 1: Absolute maximum ratings are those values beyond which damage to the device may occur. The databook specifications should be met, without exception, to ensure that the system design is reliable over its power supply, temperature, and output/input loading variables. National does not recommend operation of FACT ® circuits outside databook specifications. −0.5V to 5.5V DC Characteristics for ’FCT Family Devices Symbol Parameter FCT240 Min Max Units VCC VIH Input HIGH Voltage VIL Input LOW Voltage VCD Input Clamp Diode Voltage VOH Output HIGH Voltage 54FCT 4.3 V Min 54FCT 2.4 V Min Output LOW Voltage 54FCT 0.2 V Min 54FCT 0.5 V Min µA Max VOL 2.0 Conditions V Recognized HIGH Signal 0.8 V −1.2 V Recognized LOW Signal IIN = −18 mA Min IOH = −300 µA IOH = −12 mA IOL = 300 µA IOL = 32 mA VIN = 5.5V IIH Input HIGH Current 5 IIL Input LOW Current −5 µA Max IOZH High Impedance Output Current 10 µA Max IOZL High Impedance Output Current -10 µA Max IOS Output Short-Circuit Current −60 mA Max VIN = 0.0V VIN = 5.5V VIN = 0.0V VOUT = 0.0V ICCQ Power Supply Current 1.5 mA Max VIN = 0.2V or VIN = 5.3V ∆ICC Power Supply Current 2.0 mA Max ICCT Total Power Supply Current 4.8 mA Max 4.0 mA Max VIN = 3.4V VIN = 3.4V or VIN = GND, OE = GND, fI = 10Mhz, outputs open, one bit toggling - 50% duty cycle VIN = 5.3V or VIN = 0.2V,OE = GND, fI = 10Mhz, outputs open, one bit toggling - 50% duty cycle Outputs Open, OE = GND, One Bit Toggling, 50% Duty Cycle ICCD Dynamic ICC No Load 0.25 mA/MHz 3 Max www.national.com 54FCT240 Absolute Maximum Ratings (Note 1) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. 54FCT240 AC Electrical Characteristics Symbol Parameter 54FCT240 TA = −55˚C to +125˚C VCC = 4.5V–5.5V Units CL = 50 pF Min Max tPLH Propagation Delay 1.5 9.0 tPHL Data to Outputs 1.5 9.0 tPZH Output Enable 1.5 10.5 tPZL Time 1.5 10.5 tPHZ Output Disable 1.5 12.5 tPLZ Time 1.5 12.5 Capacitance Symbol CIN CPD Max Units Input Capacitance Parameter 10 pF Power Dissipation 12 pF Capacitance www.national.com 4 Conditions VCC = OPEN VCC = 5.0V ns ns ns Fig. No. 54FCT240 Physical Dimensions inches (millimeters) unless otherwise noted 20 Terminal Ceramic Leadless Chip Carrier (L) NS Package Number E20A 20 Lead Ceramic Dual-In-Line Package (D) NS Package Number J20A 5 www.national.com 54FCT240 Octal Buffer/Line Driver with TRI-STATE Outputs Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 20 Lead Ceramic Flatpak (F) NS Package Number W20A LIFE SUPPORT POLICY NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. 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