54FCT374 Octal D-Type Flip-Flop with TRI-STATE ® Outputs General Description Features The ’FCT374 is an 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. n n n n n n Edge-triggered D-type inputs Buffered positive edge-triggered clock TRI-STATE outputs for bus-oriented applications TTL input and output level compatible Low CMOS power consumption Output sink capability of 32 mA, source capability of 12 mA n Standard Microcircuit Drawing (SMD) 5962-9314901 Ordering Code Military Package Package Description Number 54FCT374DMQB J20A 20-Lead Ceramic Dual-In-Line 54FCT374FMQB W20A 20-Lead Cerpack 54FCT374LMQB E20A 20-Lead Ceramic Leadless Chip Carrier, Type C Connection Diagrams Pin Assignment for DIP and Flatpak Pin Assignment for LCC DS100964-2 DS100964-1 TRI-STATE ® is a registered trademark of National Semiconductor Corporation. © 1999 National Semiconductor Corporation DS100964 www.national.com 54FCT374 Octal D-Type Flip-Flop with TRI-STATE Outputs September 1998 54FCT374 Pin Descriptions Pin Functional Description The ’FCT374 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 OE is HIGH, the outputs are in a high impedance state. Operation of the OE input does not affect the state of the flip-flops. Description Names D0–D7 Data Inputs CP Clock Pulse Input (Active Rising Edge) OE TRI-STATE Output Enable Input (Active LOW) O0–O7 TRI-STATE Outputs Function Table Inputs Internal Outputs D Q O H L NC Z Hold H H NC Z Hold H N L L Z Load H N H H Z Load L N L L L Data Available L N H H H L H L NC NC No Change in Data L H H NC NC No Change in Data OE CP H H Function Data Available H = HIGH Voltage Level L = LOW Voltage Level X = Immaterial Z = High Impedance N = LOW-to-HIGH Transition NC = No Change Logic Diagram DS100964-3 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 Power-Off State in the HIGH State Current Applied to Output in LOW State (Max) Storage Temperature Ambient Temperature under Bias Junction Temperature under Bias Ceramic VCC Pin Potential to Ground Pin Input Voltage Input Current Voltage Applied to Any Output in the Disabled or −65˚C to +150˚C −55˚C to +125˚C −0.5V to +5.5V −0.5V to VCC twice the rated IOL (mA) Recommended Operating Conditions −55˚C to +175˚C Free Air Ambient Temperature Military Supply Voltage Military −0.5V to +7.0V −0.5V to +7.0V −30 mA to +5.0 mA −55˚C to +125˚C +4.5V to +5.5V 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. DC Electrical Characteristics Symbol Parameter FCT374 Min Units VIH Input HIGH Voltage VIL Input LOW Voltage 0.8 V VCD Input Clamp Diode Voltage −1.2 V VOH Output HIGH Voltage VOL 2.0 Output LOW Voltage VCC Conditions Max V Recognized HIGH Signal Min 54FCT 4.3 V Min 54FCT 2.4 V Min 54FCT 0.2 V Min 54FCT 0.5 V Min µA Max µA Max IIH Input HIGH Current 5 IIL Input LOW Current −5 5 −5 Recognized LOW Signal IIN = −18 mA IOH = −300 µA IOH = −12 mA IOL = 300 µA IOL = 32mA VIN = 2.7V (Note 3) VIN = VCC VIN = 0.5V (Note 3) VIN = 0.0V VOUT = 2.7V; OE = 2.0V IOZH Output Leakage Current 10 µA 0 − 5.5V IOZL Output Leakage Current −10 µA 0 − 5.5V IOS Output Short-Circuit Current mA Max ICCQ Power Supply Current 1.5 mA Max VIN = 0.2V or VIN = 5.3V, fI = 0MHz ∆ICC Power Supply Current 2.0 mA Max ICCT Additional ICC/Input 6.0 mA Max 5.5 mA Max VIN = 3.4V VI = VCC − 2.1V or VIN = GND, fCP = 10MHz, Outputs open, OE = GND, one bit toggling at fI = 5MHz, 50% duty cycle VI = 5.3V or VCC = 0.2V, fCP = 10MHz, Outputs open, OE = GND, one bit toggling at fI = 5MHz, 50% duty cycle 0.4 mA/ MHz Max ICCD Dynamic ICC −60 No Load VOUT = 0.5V; OE = 2.0V VOUT = 0.0V Outputs Open, OE = GND, One bit toggling, 50% duty cycle, VIN = 5.3V or VIN = 0.2V Note 2: For 8-bit toggling, ICCD < 0.8 mA/MHz. Note 3: Guaranteed, but not tested. 3 www.national.com 54FCT374 Absolute Maximum Ratings (Note 1) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. 54FCT374 AC Electrical Characteristics Symbol Parameter 54FCT TA = −55˚C to +125˚C VCC = 4.5V to 5.5V Units CL = 50 pF Min Max tPLH Propagation Delay 2.0 11.0 tPHL CP to On 2.0 11.0 tPZH Output Enable Time tPZL tPHZ Output Disable Time tPLZ 1.5 14.0 1.5 14.0 1.5 8.0 1.5 8.0 ns ns ns AC Operating Requirements Symbol 54FCT TA = −55˚C to +125˚C VCC = 4.5V to 5.5V Parameter Units CL = 50 pF Min ts(H) Setup Time, HIGH 2.5 ts(L) or LOW Dn to CP 2.5 th(H) Hold Time, HIGH 2.5 th(L) or LOW Dn to CP 2.5 tw(H) Pulse Width, CP 7.0 tw(L) HIGH or LOW 7.0 Max ns ns ns Capacitance Typ Units CIN Symbol Input Capacitance Parameter 5.0 pF COUT (Note 4) Output Capacitance 9.0 pF Note 4: COUT is measured at frequency f = 1 MHz, per MIL-STD-883B, Method 3012. www.national.com 4 Conditions (TA = 25˚C) VCC = 0V VCC = 5.0V 54FCT374 Capacitance (Continued) AC Loading DS100964-8 FIGURE 4. Propagation Delay Waveforms for Inverting and Non-Inverting Functions DS100964-4 *Includes jig and probe capacitance FIGURE 1. Standard AC Test Load DS100964-5 FIGURE 5. Propagation Delay, Pulse Width Waveforms DS100964-6 FIGURE 2. VM = 1.5V Input Pulse Requirements Amplitude Rep. Rate tw tr tf 3.0V 1 MHz 500 ns 2.5 ns 2.5 ns FIGURE 3. Test Input Signal Requirements DS100964-7 FIGURE 6. TRI-STATE Output HIGH and LOW Enable and Disable Times DS100964-9 FIGURE 7. Setup Time, Hold Time and Recovery Time Waveforms 5 www.national.com 54FCT374 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 6 54FCT374 Octal D-Type 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 AND GENERAL COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein: 1. 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