M74HC4078 8-INPUT NOR/OR GATE HIGH SPEED: t = 10ns (TYP.) at V = 6V PD CC LOW POWER DISSIPATION: I = 1A(MAX.) at T =25C CC A HIGH NOISE IMMUNITY: V = V = 28 % V (MIN.) NIH NIL CC DIP SOP TSSOP SYMMETRICAL OUTPUT IMPEDANCE: I = I = 4mA (MIN) OH OL BALANCED PROPAGATION DELAYS: t t ORDER CODES PLH PHL WIDE OPERATING VOLTAGE RANGE: PACKAGE TUBE T & R V (OPR) = 2V to 6V CC DIP M74HC4078B1R PIN AND FUNCTION COMPATIBLE WITH SOP M74HC4078M1R M74HC4078RM13TR 74 SERIES 4078 TSSOP M74HC4078TTR DESCRIPTION The M74HC4078 is an high speed CMOS All inputs are equipped with protection circuits 8-INPUT NOR/OR GATE fabricated with silicon against static discharge and transient excess 2 gate C MOS technology. voltage. PIN CONNECTION AND IEC LOGIC SYMBOLS July 2001 1/8M74HC4078 INPUT AND OUTPUT EQUIVALENT CIRCUIT PIN DESCRIPTION PIN No SYMBOL NAME AND FUNCTION 2, 3, 4, 5, 9, A to H Data Inputs 10, 11, 12 1, 13 Y, X Data Outputs 7 GND Ground (0V) V 14 Positive Supply Voltage CC TRUTH TABLE OUTPUTS INPUTS XY ALL INPUTS H L OTHER POSSIBILITIES L H ABSOLUTE MAXIMUM RATINGS Symbol Parameter Value Unit V Supply Voltage -0.5 to +7 V CC V DC Input Voltage -0.5 to V + 0.5 V I CC V DC Output Voltage -0.5 to V + 0.5 V O CC I DC Input Diode Current 20 mA IK I DC Output Diode Current 20 mA OK I DC Output Current 25 mA O I or I DC V or Ground Current 50 mA CC GND CC P Power Dissipation 500(*) mW D T Storage Temperature -65 to +150 C stg T Lead Temperature (10 sec) 300 C L Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is not implied (*) 500mW at 65 C derate to 300mW by 10mW/C from 65C to 85C RECOMMENDED OPERATING CONDITIONS Symbol Parameter Value Unit V Supply Voltage 2 to 6 V CC V Input Voltage 0 to V V I CC V Output Voltage 0 to V V O CC T Operating Temperature -55 to 125 C op Input Rise and Fall Time V = 2.0V 0 to 1000 ns CC t , t V = 4.5V 0 to 500 ns r f CC V = 6.0V 0 to 400 ns CC 2/8