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| IN74HC652 OCTAL 3-STATE BUS TRANSCEIVERS AND D FLIP-FLOPS High-Performance Silicon-Gate CMOS The IN74HC652 is identical in pinout to the LS/ALS652. The device inputs are compatible with standard CMOS outputs; with pullup resistors, they are compatible with LS/ALSTTL outputs. These devices consists of bus transceiver circuits, D-type flipflop, and control circuitry arranged for multiplex transmission of data directly from the data bus or from the internal storage registers. Direction and Output Enable are provided to select the read-time or stored data function. Data on the A or B Data bus, or both, can be stored in the internal D flip-flops by low-to-high transitions at the appropriate clock pins (A-to-B Clock or B-to-A Clock) regardless of the select or enable or enable control pins. When A-to-B Source and B-to-A Source are in the real-time transfer mode, it is also possible to store data without using the internal D-type flip-flops by simulta-neously enabling Direction and Output Enable. In this configuration each output reinforces its input. Thus, when all other data sources to the two sets of bus lines are at high impedance, each set of bus lines will remain at its last state. The IN74HC652 has noninverted outputs. Outputs Directly Interface to CMOS, NMOS, and TTL Operating Voltage Range: 2.0 to 6.0 V Low Input Current: 1.0 A High Noise Immunity Characteristic of CMOS Devices LOGIC DIAGRAM ORDERING INFORMATION IN74HC651N Plastic IN74HC651DW SOIC TA = -55 to 125 C for all packages PIN ASSIGNMENT * * * * PIN 24=VCC PIN 12 = GND 1 IN74HC652 MAXIMUM RATINGS* Symbol Parameter Value Unit VCC DC Supply Voltage (Referenced to GND) -0.5 to +7.0 V VIN DC Input Voltage (Referenced to GND) -1.5 to VCC +1.5 V VOUT DC Output Voltage (Referenced to GND) -0.5 to VCC +0.5 V IIN DC Input Current, per Pin mA 20 IOUT DC Output Current, per Pin mA 35 ICC DC Supply Current, VCC and GND Pins mA 75 PD Power Dissipation in Still Air, Plastic DIP+ 750 mW SOIC Package+ 500 Tstg Storage Temperature -65 to +150 C 260 TL Lead Temperature, 1 mm from Case for 10 C Seconds (Plastic DIP or SOIC Package) * Maximum Ratings are those values beyond which damage to the device may occur. Functional operation should be restricted to the Recommended Operating Conditions. +Derating - Plastic DIP: - 10 mW/C from 65 to 125C SOIC Package: : - 7 mW/C from 65 to 125C RECOMMENDED OPERATING CONDITIONS Symbol Parameter VCC DC Supply Voltage (Referenced to GND) VIN, VOUT DC Input Voltage, Output Voltage (Referenced to GND) TA Operating Temperature, All Package Types t r, tf Input Rise and Fall Time VCC =2.0 V (Figures2,3) VCC =4.5 V VCC =6.0 V Min 2.0 0 -55 0 0 0 Max 6.0 VCC +125 1000 500 400 Unit V V C ns This device contains protection circuitry to guard against damage due to high static voltages or electric fields. However, precautions must be taken to avoid applications of any voltage higher than maximum rated voltages to this high-impedance circuit. For proper operation, VIN and VOUT should be constrained to the range GND(VIN or VOUT)VCC. Unused inputs must always be tied to an appropriate logic voltage level (e.g., either GND or VCC). Unused outputs must be left open. I/O pins must be connected to a properly terminated line or bus. 2 IN74HC652 DC ELECTRICAL CHARACTERISTICS(Voltages Referenced to GND) Guaranteed Limit VCC Symbol Parameter Test Conditions V 85 125 25 C to C C -55C 1.5 1.5 VOUT=0.1 V or VCC-0.1 V 2.0 1.5 VIH Minimum High3.15 3.15 3.15 Level Input 4.5 IOUT 20 A 4.2 4.2 4.2 Voltage 6.0 0.5 0.5 VOUT=0.1 V or VCC-0.1 V 2.0 0.5 VIL Maximum Low 1.35 1.35 1.35 Level Input 4.5 IOUT 20 A 1.8 1.8 1.8 Voltage 6.0 1.9 1.9 VIN=VIH or VIL 1.9 VOH Minimum High2.0 4.4 4.4 4.4 Level Output 4.5 IOUT 20 A 5.9 5.9 5.9 Voltage 6.0 VIN=VIH or VIL 3.7 3.84 3.98 4.5 IOUT 6.0 mA 5.2 5.34 5.48 6.0 IOUT 7.8 mA 0.1 0.1 VIN= VIL or VIH 0.1 VOL Maximum Low2.0 0.1 0.1 0.1 Level Output 4.5 IOUT 20 A 0.1 0.1 0.1 Voltage 6.0 VIN=VIH or VIL 0.4 0.33 0.26 4.5 IOUT 6.0 mA 0.4 0.33 0.26 6.0 IOUT 7.8 mA) 6.0 IIN Maximum Input VIN=VCC or GND 0.1 1.0 1.0 Leakage Current (Pins 1,2,3,21,22,and 23) 6.0 IOZ Maximum Three- Output in High0.5 5.0 10 Impedance State State Leakage VIN= VIL or VIH Current VOUT=VCC or GND, I/O Pins VIN=VCC or GND ICC Maximum 6.0 8.0 80 160 Quiescent Supply IOUT=0A Current (per Package) Unit V V V V A A A 3 IN74HC652 AC ELECTRICAL CHARACTERISTICS(CL=50pF,Input tr=tf=6.0 ns) Guaranteed Limit VCC Symbol Parameter V 25 C 85C 125 to C -55C 270 225 180 tPLH, Maximum Propagation Delay, Input A to 2.0 54 45 36 tPHL Output B (or Input B to Output A) 4.5 46 38 31 6.0 (Figures 2,3 and 9) 360 300 240 tPLH, Maximum Propagation Delay, A-to-B 2.0 72 60 48 tPHL Clock to Output B (or B-to-A Clock to 4.5 61 51 41 Output A) 6.0 (Figures 1 and 9) 330 275 220 tPLH, Maximum Propagation Delay, A-to-B 2.0 66 55 44 tPHL Source to Output B (or B-to-A Source to 4.5 56 47 37 6.0 Output A) (Figures 4 and 9) 255 215 170 tPLZ, Maximum Propagation Delay , Direction 2.0 51 43 34 tPHZ or Output Enable to Output A or B 4.5 43 37 29 6.0 (Figures 5,6 and 10) 270 225 180 tPZL, Maximum Propagation Delay , Direction 2.0 54 45 36 tPZH or Output Enable to Output A or B 4.5 46 38 31 6.0 (Figures 5,6 and 10) 90 75 60 tTLH, tTHL Maximum Output Transition Time, Any 2.0 18 15 12 4.5 Output 15 13 10 6.0 (Figure 2) CIN Maximum Input Capacitance 10 10 10 COUT Maximum Three-State I/O Capacitance 15 15 15 (Output in High-Impedance State Power Dissipation Capacitance (Per Channel) Used to determine the no-load dynamic power consumption: PD=CPDVCC2f+ICCVCC Typical @25C,VCC=5.0 V 60 pF Unit ns ns ns ns ns ns pF pF CPD 4 IN74HC652 TIMING REQUIREMENTS(Input tr=tf=6.0 ns) Symbol tsu Parameter Minimum Setup Time, Input A to A-to-B Clock (or Input B to Bto-A Clock) (Figure 7) Minimum Hold Time, A-to-B Clock to Input A (or B-to-A Clock to Input B) (Figure 7) Minimum Pulse Width, A-to-B Clock (or B-to-A Clock) (Figure 7) Maximum Input Rise and Fall Times (Figures 2 and 3) VCC V 2.0 4.5 6.0 2.0 4.5 6.0 2.0 4.5 6.0 2.0 4.5 6.0 Guaranteed Limit 25 C to85C 125C 55C 75 65 50 15 13 10 13 11 9 25 5 5 75 15 13 1000 500 400 30 6 5 95 19 16 1000 500 400 40 8 7 110 22 19 1000 500 400 Unit ns th ns tw t r, tf ns ns TIMING DIAGRAM 5 IN74HC652 FUNCTION TABLE Dir. OE CAB CBA SAB SBA FUNCTION Both the A bus and the B bus are inputs. Z Z The output functions of the A and B bus are disabled. INPUTS INPUTS Both the A and B bus are used for inputs to the internal flip-flops. Data at the bus will be stored on low to high transition of the clock inputs. OUTPUTS INPUTS The A bus are outputs and the B bus are inputs. L L The data at the B bus are displayed H H at the A bus. L L The data at the B bus are displayed H H at the A bus. The data of the B bus are stored to the internal flip-flops on low to high transition of the clock pulse. Qn X The data stored to the internal flipflops, are displayed at the A bus. H H The data at the B bus are stored to L L the internal flip-flops on low to high transition of the clock pulse. The states of the internal flip-flops output directly to the A bus. INPUTS OUTPUTS The A bus are inputs and the B bus are outputs. L L The data at the A bus are displayed H H at the B bus. L L The data at the B bus are displayed H H at the A bus. The data of the B bus are stored to the internal flip-flops on low to high transition of the clock pulse. X Qn The data stored to the internal flipflops are displayed at the B bus. L L The data at the A bus are stored to H H the internal flip-flops on low to high transition of the clock pulse. The states of the internal flip-flops output directly to the B bus. OUTPUTS OUTPUTS Both the A bus and the B bus are outputs Qn Qn The data stored to the internal flipflops are displayed at the A and B bus respectively. Qn Qn The output at the A bus are displayed at the B bus, the output at the B bus are displayed at the A bus respec. A INPUTS B INPUTS L H X X X X X X X* L L X* X X X L L X* X* X X X H H X H H X* X* L L X X X X* X* H H X X H L X X H H H H X : DON'T CARE Z : HIGH IMPEDANCE Qn : THE DATA STORED TO THE INTERNAL FLIP-FLOPS BY MOST RECENT LOW TO HIGH TRANSITION OF THE CLOCK INPUTS * : THE DATA AT THE A AND B BUS WILL BE STORED TO THE INTERNAL FLIP-FLOPS ON EVERY LOW TO TRANSITION OF THE CLOCK INPUTS 6 IN74HC652 SWITCHING DIAGRAMS Figure 1. Switching Waveforms Figure 2. A Data Port = Input, B Data Port = Output Figure 3. A Data Port = Output, B Data Port = Input Figure 4. Switching Waveforms Figure 5. Switching Waveforms 7 IN74HC652 Figure 6. Switching Waveforms Figure 7. Switching Waveforms Figure 9. Test Circuit Figure 10. Test Circuit 8 IN74HC652 EXPANDED LOGIC DIAGRAM 9 |
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