Ic 74139 Pin Diagram. The device has two independent decoders each accepting two. Cl 50 pf unless otherwise specified.
Ic 74139 decoder pin diagram. Pin configuration for sot109 1 so16 74hc139 74hct139 1e vcc 1a0 2e 1a1 2a0 1y0 2a1 1y1 2y0 1y2 2y1. The pins a0 to a2 are data inputs y0 to y7 are demultiplexer outputs e1 e2 are active low data enable and active high data enable pins respectively le is the latch enable input vcc and gnd terminals are positive supply voltage and ground terminals.
74ls138 is a sixteen pin device as shown in pin diagram and we will describe the function of each pin below.
The sn74hc139 74139 ic provides two individual 2 line to 4 line decoders in a single package. 74ls138 is used in de multiplexing applications by using enable pin as data input pin. Inputs are pins 2 and 3 and the outputs are pins 4 to 7. Pdf 02sm7t3 000033fl aepss128k16 fct139 aepss128k16 fct139 ic 74139 decoder pin diagram 74139 pin diagram ic 74139.
