54ACTQ241 Quiet Series Octal Buffer/Line Driver with TRI-STATE ® Outputs General Description The ACTQ241 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. The ACTQ utilizes NSC Quiet Series technology to guarantee quiet output switching and improved dynamic threshold performance. FACT Quiet Series™ features GTO™ output control and undershoot corrector in addition to a split ground bus for superior performance. n Guaranteed simultaneous switching noise level and dynamic threshold performance n Improved latch-up immunity n TRI-STATE outputs drive bus lines or buffer memory address registers n Outputs source/sink 24 mA n Faster prop delays than the standard ’AC/’ACT241 n 4 kV minimum ESD immunity (’ACTQ) n Standard Microcircuit Drawing (SMD) 5962-92185 Features n ICC and IOZ reduced by 50% Logic Symbol Connection Diagrams IEEE/IEC Pin Assignment for DIP and Flatpak DS100246-2 DS100246-1 Pin Names Description OE1, OE2 TRI-STATE Output Enable Inputs I0–I7 Inputs O0–O7 Outputs Pin Assignment for LCC DS100246-3 GTO™ is a trademark of National Semiconductor Corporation. TRI-STATE ® is a registered trademark of National Semiconductor Corporation. FACT ® is a registered trademark of Fairchild Semiconductor Corporation. FACT Quiet Series™ is a trademark of Fairchild Semiconductor Corporation. © 1998 National Semiconductor Corporation DS100246 www.national.com 54ACTQ241 Quiet Series Octal Buffer/Line Driver with TRI-STATE Outputs August 1998 Truth Tables Inputs OE1 Outputs In (Pins 12, 14, 16, 18) L L L L H H H X Z Inputs Outputs OE2 In H L L H H H H X Z (Pins 3, 5, 7, 9) H = HIGH Voltage Level L = LOW Voltage Level X = Immaterial Z = High Impedance www.national.com 2 Absolute Maximum Ratings (Note 1) DC Latch-Up Source or Sink Current Junction Temperature (TJ) CDIP 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 Input Voltage (VI) DC Output Diode Current (IOK) VO = −0.5V VO = VCC + 0.5V DC Output Voltage (VO) DC Output Source or Sink Current (IO) DC VCC or Ground Current per Output Pin (ICC or IGND) Storage Temperature (TSTG) −0.5V to +7.0V ± 300 mA 175˚C Recommended Operating Conditions −20 mA +20 mA −0.5V to VCC + 0.5V Supply Voltage (VCC) ’ACTQ Input Voltage (VI) Output Voltage (VO) Operating Temperature (TA) 54ACTQ Minimum Input Edge Rate ∆V/∆t ’ACTQ Devices VIN from 0.8V to 2.0V VCC @ 4.5V, 5.5V −20 mA +20 mA −0.5V to VCC + 0.5V ± 50 mA ± 50 mA −65˚C to +150˚C 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. Note 2: All commercial packaging is not recommended for applications requiring greater than 2000 temperature cycles from −40˚C to +125˚C. DC Electrical Characteristics for ’ACTQ Family Devices Symbol Parameter VCC 54ACTQ TA = (V) −55˚C to +125˚C Units Conditions Guaranteed Limits VIH VIL VOH VOL IIN Minimum High Level 4.5 2.0 Input Voltage 5.5 2.0 Maximum Low Level 4.5 0.8 Input Voltage 5.5 0.8 Minimum High Level 4.5 4.4 Output Voltage 5.5 5.4 4.5 3.70 5.5 4.70 Maximum Low Level 4.5 0.1 Output Voltage 5.5 0.1 Maximum Input V VOUT = 0.1V V or VCC − 0.1V VOUT = 0.1V V or VCC − 0.1V IOUT = −50 µA V (Note 3) VIN = VIL or VIH IOH = −24 mA V IOH = −24 mA IOUT = 50 µA V (Note 3) VIN = VIL or VIH IOL = 24 mA IOL = 24 mA VI = VCC, GND 4.5 0.50 5.5 0.50 5.5 ± 1.0 µA 5.5 ± 5.0 µA VI = VIL, VIH VO = VCC, GND 1.6 mA VI = VCC − 2.1V VOLD = 1.65V Max VOHD = 3.85V Min Leakage Current IOZ Maximum TRI-STATE Leakage Current ICCT Maximum ICC/Input 5.5 IOLD (Note 4) Minimum Dynamic Output Current 5.5 50 mA 5.5 −50 mA IOHD 3 www.national.com DC Electrical Characteristics for ’ACTQ Family Devices Symbol Parameter VCC 54ACTQ TA = (V) −55˚C to +125˚C (Continued) Units Conditions Guaranteed Limits ICC Maximum Quiescent 5.5 80.0 µA 5.0 1.5 V 5.0 −1.2 V Supply Current VOLP Quiet Output or GND (Note 5) Maximum Dynamic VOL VOLV Quiet Output VIN = VCC (Notes 6, 7) Minimum Dynamic VOL (Notes 6, 7) 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. Note 5: ICC for 54ACTQ @ 25˚C is identical to 74ACTQ @ 25˚C. Note 6: Plastic DIP package. Note 7: Max number of outputs defined as (n). Data Inputs are driven 0V to 3V. One output @ GND. Note 8: Max number of Data Inputs (n) switching. n−1 Inputs switching 0V to 3V (’ACTQ). Input-under-test switching: 3V to threshold (VILD), 0V to threshold (VIHD), f = 1 MHz. AC Electrical Characteristics 54ACTQ TA = −55˚C VCC Symbol Parameter (V) (Note 9) tPHL, tPLH Propagation Delay Fig. to +125˚C CL = 50 pF Units No. Min Max 5.0 1.5 8.0 ns Figure 4 Data to Output tPZL, tPZH Output Enable Time 5.0 1.5 10.5 ns Figure 5 tPHZ, tPLZ Output Disable Time 5.0 1.5 9.5 ns Figure 5 Note 9: Voltage Range 5.0 is 5.0V ± 0.5V. Note 10: Skew is defined as the absolute value of the difference between the actual propagation delay for any two separate outputs of the same device. The specification applies to any outputs switching in the same direction, either HIGH to LOW (tOSHL) or LOW to HIGH (tOSLH). Parameter guaranteed by design. Capacitance Symbol CIN CPD Typ Units Input Capacitance Parameter 4.5 pF Power Dissipation 70 pF Capacitance www.national.com 4 Conditions VCC = OPEN VCC = 5.0V AC Loading DS100246-8 DS100246-7 FIGURE 2. Test Input Signal Levels *Includes jig and probe capacitance FIGURE 1. Standard AC Test Load Amplitude Rep. Rate tw tr tf 3.0V 1 MHz 500 ns 2.5 ns 2.5 ns FIGURE 3. Test Input Signal Requirements AC Waveforms DS100246-9 DS100246-10 FIGURE 4. Propagation Delay Waveforms for Inverting and Non-Inverting Functions FIGURE 5. TRI-STATE Output HIGH and LOW Enable and Disable Time 5 www.national.com 6 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 7 www.national.com 54ACTQ241 Quiet Series 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 OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein: 2. A critical component in any component of a life support 1. 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