Revised August 1999 74F374 Octal D-Type Flip-Flop with 3-STATE Outputs General Description Features The 74F374 is a high-speed, low-power octal D-type flipflop featuring separate D-type inputs for each flip-flop and 3-STATE outputs for bus-oriented applications. A buffered Clock (CP) and Output Enable (OE) are common to all flipflops. ■ Edge-triggered D-type inputs ■ Buffered positive edge-triggered clock ■ 3-STATE outputs for bus-oriented applications ■ Guaranteed 4000V minimum ESD protection Ordering Code: Order Number 74F374SC 74F374SJ 74F374MSA Package Number M20B M20D Package Description 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide MSA20 20-Lead Shrink Small Outline Package (SSOP), EIAJ TYPE II, 5.3mm Wide N20A 20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide 74F374PC Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code. Logic Symbols Connection Diagram IEEE/IEC © 1999 Fairchild Semiconductor Corporation DS009524 www.fairchildsemi.com 74F374 Octal D-Type Flip-Flop with 3-STATE Outputs May 1988 74F374 Unit Loading/Fan Out Pin Names U.L. Input IIH/IIL Description HIGH/LOW Output IOH/IOL D0–D7 Data Inputs 1.0/1.0 20 µA/−0.6 mA CP Clock Pulse Input (Active Rising Edge) 1.0/1.0 20 µA/−0.6 mA OE 3-STATE Output Enable Input (Active LOW) 1.0/1.0 20 µA/−0.6 mA O0–O7 3-STATE Outputs 150/40 (33.3) −3 mA/24 mA (20 mA) Truth Table Functional Description The 74F374 consists of eight edge-triggered flip-flops with individual D-type inputs and 3-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 affected the state of the flipflops. Inputs Dn H L X Internal Output OE Register On L H H L L L X H X Z CP H = HIGH Voltage Level L = LOW Voltage Level X = Immaterial Z = High Impedance = LOW-to-HIGH Clock Transition Logic Diagram Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays. www.fairchildsemi.com 2 Recommended Operating Conditions Storage Temperature −65°C to +150°C Ambient Temperature under Bias −55°C to +125°C Free Air Ambient Temperature Junction Temperature under Bias −55°C to +150°C Supply Voltage 0°C to +70°C +4.5V to +5.5V −0.5V to +7.0V VCC Pin Potential to Ground Pin Input Voltage (Note 2) −0.5V to +7.0V Input Current (Note 2) −30 mA to +5.0 mA Voltage Applied to Output in HIGH State (with VCC = 0V) Standard Output −0.5V to VCC 3-STATE Output −0.5V 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. Current Applied to Output Note 2: Either voltage limit or current limit is sufficient to protect inputs. twice the rated IOL (mA) in LOW State (Max) ESD Last Passing Voltage (Min) 4000V DC Electrical Characteristics Symbol Parameter Min Typ Max VCC VIL Input LOW Voltage 0.8 V VCD Input Clamp Diode Voltage −1.2 V Min VOH Output HIGH 10% VCC 2.5 Voltage 10% VCC 2.4 5% VCC 2.7 V Min 5% VCC 2.7 0.5 V Min IOL = 24 mA 5.0 µA Max VIN = 2.7V 7.0 µA Max VIN = 7.0V 50 µA Max VOUT = VCC V 0.0 3.75 µA 0.0 −0.6 mA Max VIN = 0.5V 50 µA Max VOUT = 2.7V Output LOW V Conditions Input HIGH Voltage VOL 2.0 Units VIH Recognized as a HIGH Signal Recognized as a LOW Signal IIN = −18 mA IOH = −1 mA IOH = −3 mA IOH = −1 mA IOH = −3 mA 10% VCC Voltage IIH Input HIGH Current IBVI Input HIGH Current Breakdown Test ICEX Output HIGH Leakage Current VID Input Leakage Test IOD 4.75 Output Leakage Circuit Current IIL Input LOW Current IOZH Output Leakage Current IOZL Output Leakage Current IOS Output Short-Circuit Current IZZ Bus Drainage Test ICCZ Power Supply Current −60 55 3 IID = 1.9 µA All Other Pins Grounded VIOD = 150 mV All Other Pins Grounded −50 µA Max VOUT = 0.5V −150 mA Max VOUT = 0V 500 µA 0.0V VOUT = 5.25V 86 mA Max VO = HIGH Z www.fairchildsemi.com 74F374 Absolute Maximum Ratings(Note 1) 74F374 AC Electrical Characteristics Symbol Parameter TA = +25°C TA = −55°C to +125°C TA = 0°C to +70°C VCC = +5.0V VCC = +5.0V VCC = +5.0V CL = 50 pF CL = 50 pF CL = 50 pF Min Typ fMAX Maximum Clock Frequency 100 140 tPLH Propagation Delay 4.0 6.5 tPHL CP to On 4.0 6.5 8.5 4.0 11.0 4.0 10.0 tPZH Output Enable Time 2.0 9.0 11.5 2.0 14.0 2.0 12.5 2.0 5.8 7.5 2.0 10.0 2.0 8.5 2.0 5.3 7.0 2.0 8.0 2.0 8.0 1.5 4.3 5.5 1.5 7.5 1.5 6.5 tPZL tPHZ Output Disable Time tPLZ Max Min Max 60 8.5 4.0 Min Max 70 10.5 4.0 Units MHz 10.0 ns ns AC Operating Requirements Symbol Parameter TA = +25°C TA = −55°C to +125°C VCC = +5.0V VCC = +5.0V Min Max Min Max TA = 0°C to +70°C VCC = +5.0V Min tS(H) Setup Time, HIGH or LOW 2.0 2.5 2.0 tS(L) Dn to CP 2.0 2.0 2.0 tH(H) Hold Time, HIGH or LOW 2.0 2.0 2.0 tH(L) Dn to CP 2.0 2.5 2.0 tW(H) CP Pulse Width 7.0 7.0 7.0 tW(L) HIGH or LOW 6.0 6.0 6.0 www.fairchildsemi.com 4 Units Max ns ns 74F374 Physical Dimensions inches (millimeters) unless otherwise noted 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide Package Number M20B 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide Package Number M20D 5 www.fairchildsemi.com 74F374 Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 20-Lead Shrink Small Outline Package (SSOP), EIAJ TYPE II, 5.3mm Wide Package Number MSA20 www.fairchildsemi.com 6 74F374 Octal D-Type Flip-Flop with 3-STATE Outputs Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide Package Number N20A Fairchild does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and Fairchild reserves the right at any time without notice to change said circuitry and specifications. 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