M74HC125 QUAD BUS BUFFER (3-STATE) HIGH SPEED: t = 8ns (TYP.) at V = 6V PD CC LOW POWER DISSIPATION: I = 4A(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 = 6mA (MIN) OH OL BALANCED PROPAGATION DELAYS: t t PLH PHL ORDER CODES WIDE OPERATING VOLTAGE RANGE: PACKAGE TUBE T & R V (OPR) = 2V to 6V CC DIP M74HC125B1R PIN AND FUNCTION COMPATIBLE WITH SOP M74HC125M1R M74HC125RM13TR 74 SERIES 125 TSSOP M74HC125TTR DESCRIPTION The M74HC125 is an high speed CMOS QUAD All inputs are equipped with protection circuits BUFFER (3-STATE) fabricated with silicon gate against static discharge and transient excess 2 C MOS technology. voltage. The device requires the 3-STATE control input G to be set high to place the output into the high impedance state. PIN CONNECTION AND IEC LOGIC SYMBOLS August 2001 1/10 Obsolete Product(s) - Obsolete Product(s)M74HC125 INPUT AND OUTPUT EQUIVALENT CIRCUIT PIN DESCRIPTION PIN No SYMBOL NAME AND FUNCTION 1, 4, 10, 13 1G TO 4G Output Enable Input 2, 5, 9, 12 1A TO 4A Data Inputs 3, 6, 8, 11 1Y TO 4Y Data Outputs 7 GND Ground (0V) V 14 Positive Supply Voltage CC TRUTH TABLE AG Y XHZ LLL HL 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 35 mA O I or I DC V or Ground Current 70 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 2/10 Obsolete Product(s) - Obsolete Product(s)