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74HCT138N Datasheet(PDF) 3 Page - NXP Semiconductors |
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74HCT138N Datasheet(HTML) 3 Page - NXP Semiconductors |
3 / 7 page September 1993 3 Philips Semiconductors Product specification 3-to-8 line decoder/demultiplexer; inverting 74HC/HCT138 PIN DESCRIPTION PIN NO. SYMBOL NAME AND FUNCTION 1, 2, 3 A0 to A2 address inputs 4, 5 E1, E2 enable inputs (active LOW) 6E3 enable input (active HIGH) 8 GND ground (0 V) 15, 14, 13, 12, 11, 10, 9, 7 Y0 to Y7 outputs (active LOW) 16 VCC positive supply voltage Fig.1 Pin configuration. Fig.2 Logic symbol. handbook, halfpage MLB312 A 0 A 1 A 2 1 2 3 15 13 11 7 9 10 12 14 Y0 Y1 Y2 Y3 Y4 Y5 Y6 Y7 4 5 6 E1 E2 E3 Fig.3 IEC logic symbol. (a) (b) Fig.4 Functional diagram. |
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