54FCT244 Octal Buffer/Line Driver with TRI-STATE ® Outputs General Description Features The ’FCT244 is an octal buffer and line driver with TRI-STATE outputs designed to be employed as a memory and address driver, clock driver, or bus-oriented transmitter/ receiver. n Non-inverting buffers n Output sink capability of 48 mA, source capability of 12 mA n TRI-STATE outputs drive lines or buffer memory address registers n TTL input and output level compatible n CMOS power consumption n Standard Microcircuit Drawing (SMD) 5962-8763001 Ordering Code Military Package Package Description Number 54FCT244DMQB J20A 20-Lead Ceramic Dual-In-Line 54FCT244FMQB W20A 20-Lead Cerpack 54FCT244LMQB E20A 20-Lead Ceramic Leadless Chip Carrier, Type C Connection Diagrams Pin Assignment for DIP and Flatpak Pin Assignment for LCC DS100967-2 DS100967-1 Pin Names H = HIGH Voltage Level L = LOW Voltage Level X = Immaterial Z = High Impedance Description OE1, OE2 Output Enable Input I0–I7 Inputs (Active Low) O0–O7 Outputs OE1 I0–3 O0–3 OE2 I4–7 H X Z H X O4–7 Z L H H L H H L L L L L L TRI-STATE ® is a registered trademark of National Semiconductor Corporation. © 1999 National Semiconductor Corporation DS100967 www.national.com 54FCT244 Octal Buffer/Line Driver with TRI-STATE Outputs September 1998 54FCT244 Absolute Maximum Ratings (Note 1) Current Applied to Output in LOW State (Max) DC Latchup Source Current 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 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 −0.5V to 5.5V −0.5V to VCC −55˚C to +125˚C +4.5V to +5.5V (∆V/∆t) 50 mV/ns 20 mV/ns DC Electrical Characteristics for ’FCT Family Devices Symbol Parameter FCT244 Min Units VCC Conditions Max VIH Input HIGH Voltage VIL Input LOW Voltage 0.8 V VCD Input Clamp Diode Voltage −1.2 V Min VOH Output HIGH Voltage V Min VOL Output LOW Voltage V Min IOH = −12 mA IOL = 300 µA IIH Input HIGH Current µA Max IOL = 48 mA VIN = VCC 2.0 54FCT 4.3 54FCT 2.4 V 54FCT 0.2 54FCT 0.55 5 Recognized HIGH Signal IIL Input LOW Current −5 µA Max IOZ Maximum TRI-STATE Current HIGH or LOW ± 10 µA Max Recognized LOW Signal IIN = −18 mA IOH = −300 µA VIN = 0.0V VIN = 0.0V or VIN = VCC IOS Output Short-Circuit Current -60 mA Max VOUT = 0.0V ICCQ Quiescent Power Supply Current 1.5 mA Max ∆ICC Quiescent Power Supply Current 2.0 mA Max VIN < 0.2V or VIN 5.3V, VCC = 5.5V VI = 3.4V, VCC = 5.5V ICCD Dynamic ICC 0.4 mA/ MHz Max Outputs Open, VCC = 5.5V, VIN 5.3V or VIN < 0.2V, One Bit Toggling, 50% Duty Cycle, OE = GND, LE = VCC ICCT Total Power Supply Current 6.0 mA Max Outputs Open, fCP = 10 MHz, VCC = 5.5V, VIN 5.3V or VIN < 0.2V, One Bit Toggling, 50% Duty Cycle, OE = GND, LE = VCC 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. Note 2: Either voltage limit or current limit is sufficient to protect inputs. Note 3: All outputs loaded; thresholds on input associated with output under test. Note 4: Maximum test duration 2.0 ms, one output loaded at a time. www.national.com 2 Symbol Parameter 54FCT TA = −55˚C to +125˚C VCC = 4.5V–5.5V Units Fig. No. CL = 50 pF Min Max tPLH Propagation Delay 1.5 7.5 tPHL Data to Outputs 1.5 7.5 tPZH Output Enable 1.5 10.5 tPZL Time 1.5 10.5 tPHZ Output Disable 1.5 8.0 tPLZ Time 1.5 8.0 ns ns ns Capacitance Symbol Parameter Max Units CIN Input Capacitance 10.0 pF COUT (Note 5) Output Capacitance 12.0 pF Conditions TA = 25˚C VCC = 0V VCC = 5.0V Note 5: COUT is measured at frequency f = 1 MHz, per MIL-STD-883B, Method 3012. 3 www.national.com 54FCT244 AC Electrical Characteristics for ’FCT Family Devices 54FCT244 Physical Dimensions inches (millimeters) unless otherwise noted 20-Terminal Ceramic Chip Carrier (L) NS Package Number E20A 20-Lead Ceramic Dual-In-Line (D) NS Package Number J20A www.national.com 4 54FCT244 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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