54AC/74AC378 Parallel D Register with Enable General Description Features The ’AC378 is a 6-bit register with a buffered common Enable. This device is similar to the ’AC174, but with common Enable rather than common Master Reset. Y Y Y Y Y Logic Symbols 6-bit high-speed parallel register Positive edge-triggered D-type inputs Fully buffered common clock and enable inputs Input clamp diodes limit high-speed termination effects Standard Military Drawing (SMD) Ð ’AC378: 5962-91605 Connection Diagrams Pin Assignment for DIP, SOIC and Flatpak Pin Assignment for LCC TL/F/10231–1 TL/F/10231 – 3 IEEE/IEC TL/F/10231 – 2 TL/F/10231–4 Pin Names E D0 – D5 CP Q0 – Q5 Description Enable Input (Active LOW) Data Inputs Clock Pulse Input (Active Rising Edge) Outputs FACTTM is a trademark of National Semiconductor Corporation. C1995 National Semiconductor Corporation TL/F/10231 RRD-B30M75/Printed in U. S. A. 54AC/74AC378 Parallel D Register with Enable March 1993 Functional Description Truth Table The ’AC378 consists of six edge-triggered D-type flip-flops with individual D inputs and Q inputs. The Clock (CP) and Enable (E) inputs are common to all flip-flops. E CP Dn Qn When the E input is LOW, new data is entered into the register on the LOW-to-HIGH transition of the CP input. When the E input is HIGH the register will retain the present data independent of the CP input. H L L L L L X H L No Change H L Inputs Output H e HIGH Voltage Level L e LOW Voltage Level X e Immaterial L e LOW-to-HIGH Clock Transition Logic Diagram TL/F/10231 – 5 Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays. 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 e b0.5V VI e VCC a 0.5V DC Input Voltage (VI) DC Output Diode Current (IOK) VO e b0.5V VO e VCC a 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) Junction Temperature (TJ) CDIP PDIP Supply Voltage (VCC) ’AC Input Voltage (VI) b 0.5V to a 7.0V 2.0V to 6.0V 0V to VCC 0V to VCC Output Voltage (VO) Operating Temperature (TA) 74AC 54AC b 20 mA a 20 mA b 0.5V to VCC a 0.5V b 40§ C to a 85§ C b 55§ C to a 125§ C Minimum Input Edge Rate (DV/Dt) ’AC Devices VIN from 30% to 70% of VCC VCC @ 3.3V, 4.5V, 5.5V b 20 mA a 20 mA b 0.5V to VCC a 0.5V 125 mV/ns g 50 mA g 50 mA b 65§ C to a 150§ C 175§ C 140§ C 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 TM circuits outside databook specifications. DC Characteristics for ’AC Family Devices Symbol Parameter VCC (V) 74AC 54AC 74AC TA e a 25§ C TA e b 55§ C to a 125§ C TA e b 40§ C to a 85§ C Typ VIH VIL VOH IIN Conditions Guaranteed Limits Minimum High Level Input Voltage 3.0 4.5 5.5 1.5 2.25 2.75 2.1 3.15 3.85 2.1 3.15 3.85 2.1 3.15 3.85 V VOUT e 0.1V or VCC b 0.1V Maximum Low Level Input Voltage 3.0 4.5 5.5 1.5 2.25 2.75 0.9 1.35 1.65 0.9 1.35 1.65 0.9 1.35 1.65 V VOUT e 0.1V or VCC b 0.1V Minimum High Level Output Voltage 3.0 4.5 5.5 2.99 4.49 5.49 2.9 4.4 5.4 2.9 4.4 5.4 2.9 4.4 5.4 V 2.56 3.86 4.86 2.4 3.7 4.7 2.46 3.76 4.76 V 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 V 3.0 4.5 5.5 0.36 0.36 0.36 0.5 0.5 0.5 0.44 0.44 0.44 V 5.5 g 0.1 g 1.0 g 1.0 mA 3.0 4.5 5.5 VOL Units Maximum Low Level Output Voltage Maximum Input Leakage Current 3.0 4.5 5.5 0.002 0.001 0.001 *All outputs loaded; thresholds on input associated with output under test. 3 IOUT e b50 mA *VIN e VIL or VIH b 12 mA b 24 mA IOH b 24 mA IOUT e 50 mA *VIN e VIL or VIH 12 mA 24 mA IOL 24 mA VI e VCC, GND DC Characteristics for ’AC Family Devices (Continued) 74AC 54AC 74AC TA e a 25§ C TA e b 55§ C to a 125§ C TA e b 40§ C to a 85§ C Parameter VCC (V) ² Minimum Dynamic 5.5 50 75 mA VOLD e 1.65V Max b 50 b 75 mA VOHD e 3.85V Min 80.0 40.0 mA VIN e VCC or GND Symbol Typ IOLD IOHD Output Current 5.5 ICC Maximum Quiescent Supply Current 5.5 Units Conditions Guaranteed Limits 4.0 ² Maximum test duration 2.0 ms, one output loaded at a time. Note: IIN and ICC @ 3.0V are guaranteed to be less than or equal to the respective limit ICC for 54AC @ 25§ C is identical to 74AC @ 25§ C. 5.5V VCC. @ AC Electrical Characteristics Symbol VCC* (V) Parameter 74AC 54AC 74AC TA e a 25§ C CL e 50 pF TA e b55§ C to a 125§ C CL e 50 pF TA e b40§ C to a 85§ C CL e 50 pF Min Typ Max Min Max 95 95 Min Units Max fmax Maximum Clock Frequency 3.3 5.0 125 160 160 200 110 145 tPLH Propagation Delay CP to Qn 3.3 5.0 2.5 1.5 8.5 6.0 11.0 8.0 1.5 1.5 12.0 9.0 2.5 1.5 12.5 9.0 ns tPHL Propagation Delay CP to Qn 3.3 5.0 2.5 1.5 8.0 5.5 10.5 7.5 1.5 1.5 12.0 9.0 2.5 1.5 11.0 8.0 ns MHz *Voltage Range 3.3 is 3.3V g 0.3V Voltage Range 5.0 is 5.0V g 0.5V AC Operating Requirements 74AC 54AC 74AC TA e a 25§ C CL e 50 pF TA e b55§ C to a 125§ C CL e 50 pF TA e b40§ C to a 85§ C CL e 50 pF Parameter VCC* (V) ts Setup Time, HIGH or LOW Dn to CP 3.3 5.0 1.5 1.0 3.0 2.0 4.0 4.0 3.5 2.5 ns th Hold Time, HIGH or LOW Dn to CP 3.3 5.0 1.0 1.0 2.0 2.0 4.0 4.0 2.0 2.0 ns ts Setup Time, HIGH or LOW, E to CP 3.3 5.0 0 0 2.0 2.0 2.5 2.5 2.0 2.0 ns th Hold Time, HIGH or LOW, E to CP 3.3 5.0 1.0 1.0 2.0 2.0 4.0 4.0 2.0 2.0 ns tw CP Pulse Width HIGH or LOW 3.3 5.0 3.0 2.0 4.5 3.5 6.5 6.5 5.5 4.0 ns Symbol Typ Units Guaranteed Minimum *Voltage Range 3.3 is 3.3V g 0.3V Voltage Range 5.0 is 5.0V g 0.5V Capacitance Typ Units Conditions CIN Symbol Input Capacitance Parameter 4.5 pF VCC e OPEN CPD Power Dissipation Capacitance 28 pF VCC e 5.0V 4 Ordering Information The device number is used to form part of a simplified purchasing code where a package type and temperature range are defined as follows: 74AC 378 P Temperature Range Family 74AC e Commercial 54AC e Military C QR Special Variations X e Devices shipped in 13× reels QR e Commercial grade device with burn-in QB e Military grade with environmental and burn-in processing shipped in tubes Device Type Package Code P e Plastic DIP D e Ceramic DIP F e Flatpak L e Leadless Ceramic Chip Carrier (LCC) S e Small Outline (SOIC) Temperature Range C e Commercial (b40§ C to a 85§ C) M e Military (b55§ C to a 125§ C) 5 Physical Dimensions inches (millimeters) 20-Terminal Ceramic Leadless Chip Carrier (L) NS Package Number E20A 16-Lead Ceramic Dual-In-Line Package (D) NS Package Number J16A 6 Physical Dimensions inches (millimeters) (Continued) 16-Lead Small Outline Integrated Circuit (S) NS Package Number M16A 16-Lead Plastic Dual-In-Line Package (P) NS Package Number N16E 7 54AC/74AC378 Parallel D Register with Enable Physical Dimensions inches (millimeters) (Continued) Lit. Ý 114805 16-Lead Ceramic Flatpak (F) NS Package Number W16A 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: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and whose failure to perform, when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury to the user. National Semiconductor Corporation 2900 Semiconductor Drive P.O. Box 58090 Santa Clara, CA 95052-8090 Tel: 1(800) 272-9959 TWX: (910) 339-9240 National Semiconductor GmbH Livry-Gargan-Str. 10 D-82256 F4urstenfeldbruck Germany Tel: (81-41) 35-0 Telex: 527649 Fax: (81-41) 35-1 National Semiconductor Japan Ltd. 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Building 16 Business Park Drive Monash Business Park Nottinghill, Melbourne Victoria 3168 Australia Tel: (3) 558-9999 Fax: (3) 558-9998 National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications.