MC74VHCT373ADWRG ON Semiconductor

MC74VHCT373A Octal D-Type Latch with 3-State Output The MC74VHCT373A is an advanced high speed CMOS octal latch with 3state output fabricated with silicon gate CMOS technology. It achieves high speed operation similar to equivalent Bipolar Schottky MC74VHCT373A 1 20 V OE CC 3 2 D0 Q0 Q0 2 19 Q7 4 5 D1 Q1 6 D0 3 18 D7 7 D2 Q2 DATA 8 9 D1 4 17 D6 NONINVERTING D3 Q3 INPUTS 13 12 OUTPUTS D4 Q4 Q1 5 16 Q6 14 15 D5 Q5 Q2 6 15 Q5 17 16 D6 Q6 18 19 D2 7 14 D5 D7 Q7 D3 8 13 D4 11 LE Q3 9 12 Q4 1 OE GND 10 11 LE Figure 1. Logic Diagram Figure 2. Pin Assignment MAXIMUM RATINGS Symbol Parameter Value Unit This device contains protection circuitry to guard against damage V DC Supply Voltage 0.5 to + 7.0 V CC due to high static voltages or electric V DC Input Voltage 0.5 to + 7.0 V fields. However, precautions must in be taken to avoid applications of any V DC Output Voltage Outputs in 3State 0.5 to + 7.0 V out voltage higher than maximum rated High or Low State 0.5 to V + 0.5 CC voltages to this highimpedance cir- I Input Diode Current 20 mA cuit. For proper operation, V and in IK V should be constrained to the out I Output Diode Current (V < GND V > V ) 20 mA OK OUT OUT CC range GND (V or V ) V . in out CC Unused inputs must always be I DC Output Current, per Pin 25 mA out tied to an appropriate logic voltage I DC Supply Current, V and GND Pins 75 mA CC CC level (e.g., either GND or V ). CC Unused outputs must be left open. P Power Dissipation in Still Air, SOIC Packages 500 mW D TSSOP Package 450 T Storage Temperature 65 to + 150 C stg Maximum ratings are those values beyond which device damage can occur. Maximum ratings applied to the device are individual stress limit values (not normal operating conditions) and are not valid simultaneously. If these limits are exceeded, device functional operation is not implied, damage may occur and reliability may be affected. Derating SOIC Packages: 7 mW/ C from 65 to 125 C TSSOP Package: 6.1 mW/ C from 65 to 125 C RECOMMENDED OPERATING CONDITIONS Symbol Parameter Min Max Unit V DC Supply Voltage 4.5 5.5 V CC V DC Input Voltage 0 5.5 V in V DC Output Voltage Outputs in 3State 0 5.5 V out High or Low State 0 V CC T Operating Temperature 40 + 85 C A t , t Input Rise and Fall Time V =5.0V 0.5V 0 20 ns/V r f CC