DESCRIPTION
G control input governs four BUS BUFFERs. DIP SOP TSSOP ORDER CODES PACKAGE TUBE T&R DIP SOP TSSOP M74HCT240B1R M74HCT240M1R M74HCT240RM13TR M74HCT240TTR All inputs are equipped with protection circuits against static discharge and transient excess voltage. PIN CONNECTION AND IEC LOGIC SYMBOLS August 2001 1/9 M74HCT240 INPUT AND OUTPUT EQUIVALENT CIRCUIT PIN DESCRIPTION
PIN No 1 2, 4, 6, 8 9, 7, 5, 3 11, 13, 15, 17 18, 16, 14, 12 19 10 20 SYMBOL NAME AND FUNCTION 1G 1A1 to 1A4 2Y1 to 2Y4 2A1 to 2A4 Output Enable Input Data Inputs Data Outputs Data Inputs 1Y1 to 1Y4 Data Outputs 2G GND VCC Output Enable Input Ground (0V) Positive Supply Voltage TRUTH TABLE G L L H X : Don’t Care Z : High Impedance INPUTS An L H X OUTPUT Yn H L Z ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit VCC Supply Voltage -0.5 to +7 V VI DC Input Voltage -0.5 to VCC + 0.5 V VO DC Output Voltage -0.5 to VCC + 0.5 V IIK DC Input Diode Current ± 20 mA IOK DC Output Diode Current ± 20 mA IO DC Output...
STMicroelectronics
