54FCT241 Octal Buffer/Line Driver with TRI-STATE ® Outputs General Description Features The FCT241 is an octal buffer and line driver with 3-STATE outputs designed to be employed as a memory and address driver, clock driver, or bus-oriented transmitter/receiver. n n n n TTL input and output level compatible CMOS power consumption Non-inverting buffers Output sink capability of 48 mA, source capability of 12 mA Ordering Code Military Package Number Package Description 54FCT241DMQB J20A 20-Lead Ceramic Dual-In-Line 54FCT241FMQB W20A 20-Lead Cerpack 54FCT241LMQB E20A 20-Lead Ceramic Leadless Chip Carrier, Type C Connection Diagram Pin Names Pin Assignment for DIP and Cerpack Description OE1 Output Enable Input (Active Low) OE2 Output Enable Input (Active High) I0–I7 Inputs O0–O7 Outputs OE1 I0–3 O0–3 OE2 I4–7 H X Z L X O4–7 Z L H H H H H L L L H L L H = HIGH Voltage Level L = LOW Voltage Level X = Immaterial Z = High Impedance DS100954-1 Pin Assignment for LCC DS100954-4 TRI-STATE ® is a registered trademark of National Semiconductor Corporation. © 1999 National Semiconductor Corporation DS100954 www.national.com 54FCT241 Octal Buffer/Line Driver with TRI-STATE Outputs August 1998 54FCT241 Absolute Maximum Ratings (Note 1) in LOW State (Max) DC Latchup Source Current (Over Comm Operating Range) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Storage Temperature Ambient Temperature under Bias Junction Temperature under Bias Ceramic VCC Pin Potential to Ground Pin Input Voltage (Note 2) Input Current (Note 2) Voltage Applied to Any Output in the Disabled or Power-Off State in the HIGH State Current Applied to Output twice the rated IOL (mA) −500 mA Recommended Operating Conditions −65˚C to +150˚C −55˚C to +125˚C Free Air Ambient Temperature Military Supply Voltage Military Minimum Input Edge Rate Data Input Enable Input −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 (∆V/∆t) 50 mV/ns 20 mV/ns Note 1: Absolute maximum ratings are values beyond which the device may be damaged or have its useful life impaired. Functional operation under these conditions is not implied. −0.5V to 5.5V −0.5V to VCC Note 2: Either voltage limit or current limit is sufficient to protect inputs. DC Electrical Characteristics Symbol Parameter VIH Input HIGH Voltage VIL Input LOW Voltage VCD Input Clamp Diode Voltage VOH Output HIGH Voltage Min Typ Max Units 2.0 VCC V 0.8 V −1.2 V Min 54FCT 4.3 V Min 54FCT 2.4 V Min V Min VOL Output LOW Voltage IIH Input HIGH Current IIL Input LOW Current −5 Conditions Recognized HIGH Signal 54FCT 0.2 54FCT 0.5 V Min 5 µA Max µA Max 5 −5 Recognized LOW Signal IIN = −18 mA IOH = −3 mA IOH = −12 mA IOL = 300 uA IOL = 48 mA VIN = 2.7V (Note 3) VIN = VCC VIN = 0.5V (Note 3) VIN = 0.0V VOUT = 2.7V; OEn = 2.0V VOUT = 0.5V; OEn = 2.0V IOZH Output Leakage Current 10 µA 0 − 5.5V IOZL Output Leakage Current −10 µA 0 − 5.5V IOS Output Short-Circuit Current mA Max VOUT = 0.0V ICCH Power Supply Current 160 µA Max All Outputs HIGH ICCL Power Supply Current 160 µA Max ICCZ Power Supply Current 160 µA Max ICCT Additional ICC/Input Outputs Enabled 2.0 mA Max All Outputs LOW OEn = VCC, All Others at VCC or Ground VI = VCC − 2.1V ICCD Dynamic ICC No Load 0.4 mA/ MHz Max −60 Note 3: Guaranteed, but not tested. www.national.com 2 Outputs Open, OEn = GND, One Bit Toggling, 50% Duty Cycle Symbol TA = −55˚C to +125˚C VCC = 4.5V–5.5V Parameter Units Fig. No. 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 9.5 tPZL Time 1.5 12.5 tPHZ Output Disable 1.5 11.5 tPLZ Time 1.5 11.5 ns ns ns Capacitance Symbol Parameter Max Units CIN Input Capacitance 10.0 pF COUT (Note 4) Output Capacitance 12.0 pF Conditions TA = 25˚C VCC = 0V VCC = 5.0V Note 4: COUT is measured at frequency f = 1 MHz, per MIL-STD-883B, Method 3012. 3 www.national.com 54FCT241 AC Electrical Characteristics 54FCT241 Physical Dimensions inches (millimeters) unless otherwise noted 20-Lead Ceramic Leadless Chip Carrier Package Number E20A 20-Lead Ceramic Dual-In-Line Package Number J20A www.national.com 4 54FCT241 Octal Buffer/Line Driver with TRI-STATE Outputs Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 20-Lead Ceramic Flatpack 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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