CD74FCT374 Data sheet acquired from Harris Semiconductor SCHS256 January 1997 Features BiCMOS FCT Interface Logic, Octal D-Type Flip-Flop, Three-State D ENDE M M O S EC IGN NOT R NEW DES ology FOR OS Techn M Use C • • • • • • • Buffered Inputs • Typical Propagation Delay: 6.6ns at VCC = 5V, TA = 25oC, CL = 50pF • Positive Edge Triggered • Noninverting • SCR Latchup Resistant BiCMOS Process and Circuit Design Speed of Bipolar FAST™/AS/S 48mA Output Sink Current Output Voltage Swing Limited to 3.7V at VCC = 5V Controlled Output Edge Rates Input/Output Isolation to VCC BiCMOS Technology with Low Quiescent Power Ordering Information PART NUMBER TEMP. RANGE (oC) PKG. NO. PACKAGE CD74FCT374E 0 to 70 20 Ld PDIP E20.3 CD74FCT374M 0 to 70 20 Ld SOIC M20.3 CD74FCT374SM 0 to 70 20 Ld SSOP M20.209 NOTE: When ordering the suffix M and SM packages, use the entire part number. Add the suffix 96 to obtain the variant in the tape and reel. Pinout CD74FCT374 (PDIP, SOIC, SSOP) TOP VIEW OE 1 Q0 2 19 Q7 D0 3 18 D7 20 VCC D1 4 17 D6 Q1 5 16 Q6 Q2 6 15 Q5 D2 7 14 D5 D3 8 13 D4 Q3 9 12 Q4 GND 10 11 CP CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures. FAST™ is a trademark of Fairchild Semiconductor. Copyright © Harris Corporation 1997 8-1 File Number 2305.2 CD74FCT374 Functional Diagram D0 D1 D2 D3 D4 D5 D6 D7 3 2 4 5 7 6 8 9 13 12 14 15 17 16 18 19 1 OE CP Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7 11 GND = PIN 10 VCC = PIN 20 TRUTH TABLE (Note 1) INPUTS OUTPUTS OE CP Dn Qn L ↑ H H L ↑ L L L L X Q0 H X X Z NOTE: 1. H = HIGH Voltage Level (Steady State) L = LOW Voltage Level (Steady State) X = Immaterial ↑= Transition from low to high level. Q0 = The level of Q before the indicated steady state input conditions were established. Z = HIGH Impedance IEC Logic Symbol CD74FCT374 1 11 3 EN >C1 2 1D 4 5 7 6 8 9 13 12 14 15 17 16 18 19 8-2 CD74FCT374 Absolute Maximum Ratings Thermal Information DC Supply Voltage (VCC) . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to 6V DC Input Diode Current, IIK (For VI < -0.5V) . . . . . . . . . . . . . -20mA DC Output Diode Current, IOK (for VO < -0.5V) . . . . . . . . . . . -50mA DC Output Sink Current per Output Pin, IO . . . . . . . . . . . . . . . 70mA DC Output Source Current per Output Pin, IO . . . . . . . . . . . . -30mA DC VCC Current (ICC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140mA DC Ground Current (IGND). . . . . . . . . . . . . . . . . . . . . . . . . . . 400mA Thermal Resistance (Typical, Note 2). . . . . . . . . . . . . . . . . θJA (oC/W) PDIP Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135 SOIC Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125 SSOP Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130 Maximum Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . 150oC Maximum Storage Temperature Range . . . . . . . . . .-65oC to 150oC Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . . 300oC (SOIC and SSOP-Lead Tips Only) Operating Conditions Operating Temperature Range (TA) . . . . . . . . . . . . . . . .0oC to 70oC Supply Voltage Range, VCC . . . . . . . . . . . . . . . . . . . .4.75V to 5.25V DC Input Voltage, VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 to VCC DC Output Voltage, VO . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 to ≤ VCC Input Rise and Fall Slew Rate, dt/dv0 to 10ns/V CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. NOTE: 2. θJA is measured with the component mounted on an evaluation PC board in free air. Electrical Specifications Commercial Temperature Range 0oC to 70oC, VCC Max = 5.25V, VCC Min = 4.75V (Note 5) AMBIENT TEMPERATURE (TA) 25oC TEST CONDITIONS PARAMETER SYMBOL VI (V) IO (mA) VCC (V) MIN 0oC TO 70oC MAX MIN MAX UNITS High Level Input Voltage VIH 4.75 to 5.25 2 - 2 - V Low Level Input Voltage VIL 4.75 to 5.25 - 0.8 - 0.8 V High Level Output Voltage VOH VIH or VIL -15 Min 2.4 - 2.4 - V Low Level Output Voltage VOL VIH or VIL 48 Min - 0.55 - 0.55 V High Level Input Current IIH VCC Max - 0.1 - 1 µA Low Level Input Current IIL GND Max - -0.1 - -1 µA IOZH VCC Max - 0.5 - 10 µA IOZL GND Max - -0.5 - -10 µA Input Clamp Voltage VIK VCC or GND Min - -1.2 - -1.2 V Short Circuit Output Current (Note 3) IOS VO = 0 VCC or GND Max -60 - -60 - mA Quiescent Supply Current, MSI ICC VCC or GND Max - 8 - 80 µA ∆ICC 3.4V (Note 4) Max - 1.6 - 1.6 mA Three State Leakage Current Additional Quiescent Supply Current per Input Pin TTL Inputs High, 1 Unit Load -18 0 NOTES: 3. Not more than one output should be shorted at one time. Test duration should not exceed 100ms. 4. Inputs that are not measured are at VCC or GND. 5. FCT Input Loading: All inputs are 1 unit load. Unit load is ∆ICC limit specified in Electrical Specifications table, e.g., 1.6mA Max. at 70oC. 8-3 CD74FCT374 Switching Specifications Over Operating Range FCT Series tr, tf = 2.5ns, CL = 50pF, RL (Figure 4) (Note 6) PARAMETER 25oC 0oC TO 70oC SYMBOL VCC (V) TYP MIN MAX UNITS Clock to Q tPLH, tPHL 5 6.6 2 10 ns Output Disable to Q tPLZ, tPHZ 5 6 1.5 8 ns Output Enable to Q tPZL, tPZH 5 9 1.5 12.5 ns CPD (Note 7) - 33 - - pF Minimum (Valley) VOHV During Switching of Other Outputs (Output Under Test Not Switching) VOHV 5 0.5 - - V Maximum (Peak) VOLP During Switching of Other Outputs (Output Under Test Not Switching) VOLP 5 1 - - V Input Capacitance CI - - - 10 pF Three State Output Capacitance CO - - - 15 pF Propagation Delays Power Dissipation Capacitance NOTES: 6. 5V: Min is at 5.25V for 0oC to 70oC, Max is at 4.75V for 0oC to 70oC, Typ is at 5V. 7. CPD, measured per flip-flop, is used to determine the dynamic power consumption. PD (per package) = VCC ICC + Σ(VCC2 fI CPD + VO2 fO CL + VCC ∆ICC D) where: VCC = supply voltage ∆ICC = flow through current x unit load CL = output load capacitance D = duty cycle of input high fO = output frequency fI = input frequency Prerequisite for Switching 25oC PARAMETER 0oC TO 70oC SYMBOL VCC (V) TYP MIN MAX UNITS tSU 5 (Note 8) - 2 - ns Data to Clock Hold Time tH 5 - 2 - ns Clock Pulse Width tW 5 - 7 - ns fMAX 5 - 70 - MHz Setup Time Data to Clock Maximum Clock Frequency NOTE: 8. 5V: Minimum is at 4.75V for 0oC to 70oC, Typical is at 5V. 8-4 CD74FCT374 8-5 Test Circuits and Waveforms VCC tr, tf = 2.5ns (NOTE 9) VI 3V 0 PULSE ZO GEN SWITCH POSITION 7V 500Ω RL V0 DUT CL 50pF RT RT = ZO 500Ω RL 9. Pulse Generator for All Pulses: Rate ≤ 1.0MHz; ZOUT ≤ 50Ω; tf, tr ≤ 2.5ns. FIGURE 1. TEST CIRCUIT Closed tPHZ, tPZH, tPLH, tPHL Open 3V 1.5V 0V DATA INPUT tH 3V 1.5V 0V TIMING INPUT tREM ASYNCHRONOUS CONTROL SWITCH DEFINITIONS: CL = Load capacitance, includes jig and probe capacitance. RT = Termination resistance, should be equal to ZOUT of the Pulse Generator. VIN = 0V to 3V. Input: tr = tf = 2.5ns (10% to 90%), unless otherwise specified NOTE: tSH TEST tPLZ, tPZL, Open Drain 3V 1.5V 0V LOW-HIGH-LOW PULSE 1.5V tW SYNCHRONOUS CONTROL PRESET CLEAR CLOCK ENABLE ETC. 3V 1.5V 0V tH tSH HIGH-LOW-HIGH PULSE FIGURE 2. SETUP, HOLD, AND RELEASE TIMING ENABLE 1.5V FIGURE 3. PULSE WIDTH DISABLE 3V 3V SAME PHASE INPUT TRANSITION 1.5V CONTROL INPUT 0V 3.5V OUTPUT NORMALLY LOW SWITCH CLOSED SWITCH OPEN tPHL 3.5V VOH 1.5V 1.5V VOL OUTPUT 0.3V tPZH OUTPUT NORMALLY HIGH tPLH tPLZ tPZL 1.5V tPHZ 0.3V VOL tPLH tPHL VOH 3V OPPOSITE PHASE INPUT TRANSITION 1.5V 0V 0V 0V 1.5V 0V FIGURE 4. ENABLE AND DISABLE TIMING FIGURE 5. PROPAGATION DELAY 8-6 Test Circuits and Waveforms (Continued) VOH OTHER OUTPUTS VOL VOH OUTPUT UNDER TEST VOHV VOLP VOL NOTES: 10. VOLP is measured with respect to a ground reference near the output under test. VOHV is measured with respect to VOH. 11. Input pulses have the following characteristics: PRR ≤ 1MHz, tr = 2.5ns, tf = 2.5ns, skew 1ns. 12. R.F. fixture with 700MHz design rules required. IC should be soldered into test board and bypassed with 0.1µF capacitor. Scope and probes require 700MHz bandwidth. FIGURE 6. SIMULTANEOUS SWITCHING TRANSIENT WAVEFORMS 8-7 IMPORTANT NOTICE Texas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue any product or service without notice, and advise customers to obtain the latest version of relevant information to verify, before placing orders, that information being relied on is current and complete. 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