54ACTQ16244 16-Bit Buffer/Line Driver with TRI-STATE ® Outputs General Description Features The ’ACTQ16244 contains sixteen non-inverting buffers with TRI-STATE outputs designed to be employed as a memory and address driver, clock driver, or bus oriented transmitter/ receiver. The device is nibble controlled. Each nibble has separate TRI-STATE control inputs which can be shorted together for full 16-bit operation. The ’ACTQ16244 utilizes NSC Quiet Series technology to guarantee quiet output switching and improved dynamic threshold performance. FACT Quiet Series ® features GTO ® output control for superior performance. n Utilizes NSC FACT Quiet Series technology n Guaranteed simultaneous switching noise level and dynamic threshold performance n Separate control logic for each byte and nibble n 16-bit version of the ’ACTQ244 n Outputs source/sink 24 mA n Standard Microcircuit Drawing (SMD) 5962-9561901 Logic Symbol Connection Diagram Pin Assignment for CERPAK DS010925-1 Pin Description Pin Names Description OEn Output Enable Input (Active Low) I0–I15 Inputs O0–O15 Outputs DS010925-2 GTO™ is a trademark of National Semiconductor Corporation. TRI-STATE ® is a registered trademark of National Semiconductor Corporation. FACT™ and FACT Quiet Series™ are trademarks of Fairchild Semiconductor Corporation. © 1998 National Semiconductor Corporation DS010925 www.national.com 54ACTQ16244 16-Bit Buffer/Line Driver with TRI-STATE Outputs September 1998 Functional Description The ’ACTQ16244 contains sixteen non-inverting buffers with TRI-STATE standard outputs. The device is nibble (4 bits) controlled with each nibble functioning identically, but independent of the other. The control pins can be shorted together to obtain full 16-bit operation. The TRI-STATE outputs are controlled by an Output Enable (OEn) input for each nibble. When OEn is LOW, the outputs are in 2-state mode. When OEn is HIGH, the outputs are in the high impedance mode, but this does not interfere with entering new data into the inputs. Inputs Outputs OE3 I8–I11 O8–O11 H X Z Inputs Outputs OE2 I4–I7 L L L L H H H X Z I12–I15 O12–O15 Truth Tables Inputs Inputs Outputs OE4 O4–O7 Outputs OE1 I0–I3 O0–O3 L L L L L L L H H L H H H X Z H X Z Inputs H = High Voltage Level L = Low Voltage Level X = Immaterial Z = High Impedance Outputs OE3 I8–I11 L L L L H H O8–O11 Logic Diagram DS010925-3 www.national.com 2 Absolute Maximum Ratings (Note 1) Recommended Operating Conditions If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Supply Voltage (VCC) DC Input Diode Current (IIK) VI = − 0.5V VI = VCC + 0.5V DC Output Diode Current (IOK) VO = −0.5V VO = VCC + 0.5V DC Output Voltage (VO) DC Output Source/Sink Current (IO) DC VCC or Ground Current per Output Pin Junction Temperature C-DIP Storage Temperature Supply Voltage (VCC) ’ACTQ Input Voltage (VI) Output Voltage (VO) Operating Temperature (TA) 54ACTQ Minimum Input Edge Rate (dV/dt) ’ACTQ Devices VIN from 0.8V to 2.0V VCC @ 4.5V, 5.5V −0.5V to +7.0V −20 mA +20 mA −20 mA +20 mA −0.5V to VCC + 0.5V ± 50 mA 4.5V to 5.5V 0V to VCC 0V to VCC −55˚C to +125˚C 125 mV/ns 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. ± 50 mA +175˚C −65˚C to +150˚C DC Electrical Characteristics for ’ACTQ Family Devices Symbol Parameter VCC (V) 54ACTQ TA = −55˚C to +125˚C Units Conditions Guaranteed Limits VIH VIL VOH Minimum High 4.5 2.0 Input Voltage 5.5 2.0 Maximum Low 4.5 0.8 Input Voltage 5.5 0.8 Minimum High 4.5 4.4 Output Voltage 5.5 5.4 V VOUT = 0.1V V or VCC − 0.1V VOUT = 0.1V V or VCC − 0.1V IOUT = −50 µA (Note 2) VIN = VIL or VIH VOL 4.5 3.70 5.5 4.70 Maximum Low 4.5 0.1 Output Voltage 5.5 0.1 V IOH = −24 mA V IOH = −24 mA IOUT = 50 µA (Note 2) VIN = VIL or VIH IOZ Maximum TRI-STATE 4.5 0.50 5.5 0.50 V IOH = 24 mA ± 10.0 µA IOH = 24 mA VI = VIL, VIH VO = VCC, GND 5.5 5.5 ± 1.0 µA VI = VCC, GND Leakage Current IIN Maximum Input Leakage Current ICCT Maximum ICC/Input 5.5 1.6 mA ICC Max Quiescent 5.5 160.0 µA VI = VCC −2.1V VIN = VCC or GND 5.5 50 mA (Note 5) VOLD = 1.65V Max IOHD Minimum Dynamic Output Current (Note 3) 50 mA VOHD = 3.85V Min VOLP Quiet Output 5.0 0.8 V 5.0 -0.8 V Supply Current IOLD Maximum Dynamic VOL VOLV Quiet Output (Notes 4, 5) Minimum Dynamic VOL (Notes 4, 5) Note 2: All outputs loaded; thresholds associated with output under test. 3 www.national.com DC Electrical Characteristics for ’ACTQ Family Devices (Continued) Note 3: Maximum test duration 2.0 ms; one output loaded at a time. Note 4: Maximum number of outputs that can switch simultaneously is n. (n − 1) outputs are switched LOW and one output held LOW. Note 5: Maximum number of outputs that can switch simultaneously is n. (n − 1) outputs are switched HIGH and one output held HIGH. Note 6: Max number of data inputs (n) switching. (n − 1) input switching 0V to 3V (’ACTQ) input under test switching 3V to threshold (VILD) AC Electrical Characteristics Symbol Parameter tPLH Propagation Delay tPHL An, Bn to Bn, An tPZH Output Enable tPZL Time tPHZ Output Disable tPLZ Time VCC (V) (Note 7) 54ACTQ TA = −55˚C to +125˚C CL = 50 pF Min Max 2.5 10.0 5.0 2.5 9.5 ns 5.0 2.5 9.5 ns 2.5 10.5 2.0 9.5 2.0 9.5 5.0 Note 7: Voltage Range 5.0 is 5.0V ± 0.5V. Capacitance Symbol Parameter Typ Units CIN Input Pin Capacitance 4.5 pF CPD Power Dissipation Capacitance 95 pF www.national.com Units 4 Conditions VCC = 5.0V VCC = 5.0V ns 5 54ACTQ16244 16-Bit Buffer/Line Driver with TRI-STATE Outputs Physical Dimensions inches (millimeters) unless otherwise noted 48-Lead CERPAK (F) NS Package Number WA48A 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 OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein: 2. A critical component in any component of a life support 1. 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