DESCRIPTION
The M74HCT258 is an inverting multiplexer. When the ENABLE input is held "High", outputs of DIP SOP TSSOP ORDER CODES PACKAGE TUBE T&R DIP SOP TSSOP M74HCT258B1R M74HCT258M1R M74HCT258RM13TR M74HCT258TTR the IC become in a High-Impedance state. If SELECT input is held low, "A" data is selected, when SELECT is high , "B" data is chosen. All inputs are equipped with protection circuits against static discharge and transient excess voltage. PIN CONNECTION AND IEC LOGIC SYMBOLS August 2001 1/10 M74HCT258 INPUT AND OUTPUT EQUIVALENT CIRCUIT PIN DESCRIPTION
PIN No 1 2, 5, 14, 11 3, 6, 13, 10 4, 7, 12, 9 15 8 16 SYMBOL SELECT 1A to 4A 1B to 4B 1Y to 4Y OE GND Vcc NAME AND FUNCTION Common Data Select Input Data Input From Source A Data Input From Source B 3 State Multiplexer Outputs 3 State Output Enable Inputs (Active Low) Ground (0V) Positive Supply Voltage TRUTH TABLE OE H L L L L X : Don’t Care Z : High Impedance LOGIC DIAGRAM INPUTS SELECT A X X L L L H H X H X OUTPUT B Y X Z...
STMicroelectronics
