Octal D Flip-Flop

www.DataSheet4U.com 54AC374 • 54ACT374 Octal D Flip-Flop with TRI-STATE Outputs August 1998 54AC374 • 54ACT374 Octal D Flip-Flop with TRI-STATE ® Outputs General Description The ’AC/’ACT374 is a high-speed, low-power octal D-type flip-flop featuring separate D-type inputs for each flip-flop and TRI-STATE outputs for bus-oriented applications. A buffered Clock (CP) and Output Enable (OE) are common to all flip-flops. Outputs source/sink 24 mA See ’273 for reset version See ’377 for clock enable version See ’373 for transparent latch version See ’574 for broadside pinout version See ’564 for broadside pinout version with inverted outputs n ’ACT374 has TTL-compatible inputs n Standard Military Drawing (SMD) — ’AC374: 5962-87694 — ’ACT374: 5962-87631 n n n n n n Features n ICC and IOZ reduced by 50% n Buffered positive edge-triggered clock n TRI-STATE outputs for bus-oriented applications Logic Symbols IEEE/IEC DS100289-1 DS100289-2 Pin Names D0–D7 CP OE O0–O7 Data Inputs Description Clock Pulse Input TRI-STATE Output Enable Input TRI-STATE Outputs TRI-STATE ® is a registered trademark of National Semiconductor Corporation. FACT ® is a registered trademark of Fairchild Semiconductor Corporation. © 1998 National Semiconductor Corporation DS100289 www.national.com Connection Diagrams Pin Assignment for DIP and Flatpak Pin Assignment for LCC DS100289-4 DS100289-3 Functional Description The ’AC/’ACT374 consists of eight edge-triggered flip-flops with individual D-type inputs and TRI-STATE true outputs. The buffered clock and buffered Output Enable are common to all flip-flops. The eight flip-flops will store the state of their individual D inputs that meet the setup and hold time requirements on the LOW-to-HIGH Clock (CP) transition. With the Output Enable (OE) LOW, the contents of the eight flip-flops are available at the outputs. When the OE is HIGH, the outputs go to the high impedance state. Operation of the OE input does not affect the state of the flip-flops. Truth Table Inputs Dn H L X CP N N Outputs OE L L H On H L Z X H = HIGH Voltage Level L = LOW Voltage Level X = Immaterial Z = High Impedance N = LOW-to-HIGH Transition Logic Diagram DS100289-5 Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays. www.national.com 2 Absolute Maximum Ratings (Note 1) 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) Junction Temperature (TJ) CDIP −0.5V to +7.0V −20 mA +20 mA −0.5V to VCC + 0.5V −20 mA +20 mA −0.5V to VCC + 0.5V Recommended Operating Conditions Supply Voltage (VCC) ’AC ’ACT Input Voltage (VI) Output Voltage (VO) Operating Temperature (TA) 54AC/ACT Minimum Input Edge Rate (∆V/∆t) ’AC Devices VIN from 30% to 70% of VCC VCC @ 3.3V, 4.5V, 5.5V Minimum Input Edge Rate (∆V/∆t) ’ACT Devices VIN from 0.8V to 2.0V VCC @ 4.5V, 5.5V 2.0V to 6.0V 4.5V to 5.5V 0V to VCC 0V to VCC −55˚C to +125˚C 125 mV/ns ±50 mA ±50 mA −65˚C to +150˚C 175˚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. DC Characteristics for ’AC Family Devices Symbol VIH Parameter Minimum High Level Input Voltage VIL Maximum Low Level Input Voltage VOH Minimum High Level Output Voltage VCC (V) 3.0 4.5 5.5 3.0 4.5 5.5 3.0 4.5 5.5 54AC TA = −55˚C to +125˚C Guaranteed Limits 2.1 3.15 3.85 0.9 1.35 1.65 2.9 4.4 5.4 (Note 2) VIN = VIL or VIH 3.0 4.5 5.5 VOL Maximum Low Level Output Voltage 3.0 4.5 5.5 2.4 3.7 4.7 0.1 0.1 0.1 (Note 2) VIN = VIL or VIH 3.0 4.5 5.5 IIN IOZ Maximum Input Leakage Current Maximum TRI-STATE Current 5.5 5.5 0.50 0.50 0.50 V µA IOL VI = VCC, GND VI (OE) = VIL, VIH VI = VCC, GND VO = VCC, GND 12 mA 24 mA 24 mA V IOUT = 50 µA V IOH −12 mA −24 mA −24 mA V IOUT = −50 µA V VOUT = 0.1V or VCC − 0.1V V VOUT = 0.1V or VCC − 0.1V Units Conditions ±1.0 ±5.0 µA 3 www.national.com DC Characteristics for ’AC Family Devices Symbol IOLD IOHD ICC Parameter (Note 3) Minimum Dynamic Output Current Maximum Quiescent Supply Current Note 2: All outputs loaded; thresholds on input associated with output under test. Note 3: Maximum test duration 2.0 ms, one output loaded at a time. (Continued) VCC (V) 5.5 5.5 5.5 54AC TA = −55˚C to +125˚C Guaranteed Limits 50 −50 80.0 Units mA mA µA Conditions VOLD = 1.65V Max VOHD = 3.85V Min VIN = VCC or GND Note 4: IIN and ICC @ 3.0V are guaranteed to be less than or equal to the respective limit @ 5.5V VCC. ICC for 54AC @ 25˚C is identical to 74AC @ 25˚C. DC Characteristics for ’ACT Family Devices Symbol VIH Parameter Minimum High Level Input Voltage Maximum Low Level Input Voltage Minimum High Level Output Voltage VCC (V) 4.5 5.5 4.5 5.5 4.5 5.5 54ACT TA = −55˚C to +125˚C Guaranteed Limits 2.0 2.0 0.8 0.8 4.4 5.4 (Note 5) VIN = VIL or VIH 4.5 5.5 VOL Maximum Low Level Output Voltage 4.5 5.5 3.70 4.70 0.1 0.1 (Note 5) VIN = VIL or VIH 4.5 5.5 IIN IOZ ICCT IOLD IOHD ICC Maximum Input Leakage Current Maximum TRI-STATE Current Maximum ICC/Input (Note 6) Minimum Dynamic Output Current Maximum Quiescent Supply Current Note 5: All outputs loaded; thresholds on input associated with output under test. Note 6: Maximum test duration 2.0 ms, one output loaded at a time. Note 7: ICC for 54ACT @ 25˚C is identical to 74ACT @ 25˚C. Units V Conditions VOUT = 0.1V or VCC − 0.1V VIL V VOUT = 0.1V or VCC − 0.1V VOH V IOUT = −50 µA V V IOH IOUT = 50 µA −24 mA −24 mA 0.50 0.50 V µA µA mA mA mA µA IOL VI = VCC, GND VI = VIL, VIH VO = VCC, GND VI = VCC − 2.1V VOLD = 1.65V Max VOHD = 3.85V Min VIN = VCC or GND 24 mA 24 mA 5.5 5.5 5.5 5.5 5.5 5.5 ±1.0 ±5.0 1.6 50 −50 80.0 www.national.com 4 AC Electrical Characteristics VCC Symbol fmax tPLH tPHL tPZH tPZL tPHZ tPLZ Parameter Maximum Clock Frequency Propagation Delay CP to On Propagation Delay CP to On Output Enable Time Output Enable Time Output Disable Time Output Disable Time (V) (Note 8) 3.3 5.0 3.3 5.0 3.3 5.0 3.3 5.0 3.3 5.0 3.3 5.0 3.3 5.0 Note 8: Voltage Range 3.3 is 3.3V ±0.3V Voltage Range 5.0 is 5.0V ±0.5V 54AC TA = −55˚C to +125˚C CL = 50 pF Min 60 95 3.0 3.0 3.0 3.0 1.0 1.5 1.0 1.5 1.0 1.5 1.0 1.5 16.5 12.0 15.0 11.0 14.0 10.5 14.0 10.5 16.0 12.5 13.0 10.5 Max Fig. Units MHz ns ns ns ns ns ns No. AC Operating Requirements VCC Symbol Parameter (V) (Note 9) ts th tw Setup Time, HIGH or LOW Dn to CP Hold Time, HIGH or LOW Dn to CP CP Pulse Width, HIGH or LOW Note 9: Voltage Range 3.3 is 3.3V ±0.3V Voltage Range 5.0 is 5.0V ±0.5V 54AC TA = −55˚C to +125˚C CL = 50 pF Guaranteed Minimum 6.5 5.0 1.0 1.5 6.5 5.0 ns ns Units Fig. No. 3.3 5.0 3.3 5.0 3.3 5.0 ns AC Electrical Characteristics VCC Symbol Parameter (V) (Note 10) Min fmax tPLH tPHL tPZH Maximum Clock Frequency Propagation Delay CP to On Propagation Delay CP to On Output Enable Time 5.0 1.5 11.5 ns 5.0 1.5 11.5 ns 5.0 1.5 12.0 ns 5.0 70 54ACT TA = −55˚C to +125˚C CL = 50 pF Max MHz Units 5 www.national.com AC Electrical Characteristics (Continued) 54ACT TA = −55˚C to +125˚C CL = 50 pF Min Max 11.5 13.0 11.0 ns ns ns 1.5 1.5 1.5 Units VCC Symbol Parameter (V) (Note 10) tPZL tPHZ tPLZ Output Enable Time Output Disable Time Output Disable Time 5.0 5.0 5.0 Note 10: Voltage Range 5.0 is 5.0V ±0.5V AC Operating Requirements VCC Symbol Parameter (V) (Note 11) ts th tw Setup Time, HIGH or LOW Dn to CP Hold Time, HIGH or LOW Dn to CP CP Pulse Width, HIGH or LOW Note 11: Voltage Range 5.0 is 5.0V ±0.5V 54ACT TA = −55˚C to +125˚C CL = 50 pF Guaranteed Minimum 5.5 1.5 5.0 Units Fig. No. 5.0 5.0 5.0 ns ns ns Capacitance Symbol CIN CPD Parameter Input Capacitance Power Dissipation Capacitance Typ 4.5 40 Units pF pF Conditions VCC = OPEN VCC = 5.0V 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 54AC374 • 54ACT374 Octal D Flip-Flop 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. Life support devices or systems are devices or sysdevice or system whose failure to perform can be reatems which, (a) are intended for surgical implant into sonably expected to cause the failure of the life support the body, or (b) support or sustain life, and whose faildevice or system, or to affect its safety or effectiveness. ure 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 Americas Tel: 1-800-272-9959 Fax: 1-800-737-7018 Email: support@nsc.com National Semiconductor Europe Fax: +49 (0) 1 80-530 85 86 Email: europe.support@nsc.com Deutsch Tel: +49 (0) 1 80-530