Hitachi HD74HC139
The HD74HC139 contains two independent two-to-four-line decoders each with a single active low enable input (1G or 2G).| Part No. | HD74HC139 |
|---|---|
| Datasheet | HD74HC139 Download |
| Manufacturer |  Hitachi |
| Description | Dual 2-to-4-line Decoders/Demultiplexers |
| Buy | Stock & Price |
DESCRIPTION
Data on the slect inputs (1A and 1B or 2A and 2B) cause one of the four normally high outputs to go low.FEATURES
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● High Speed Operation: tpd (A, B to Y, 4 levels) = 14 ns typ (C L = 50 pF) High Output Current: Fanout of 10 LSTTL Loads Wide Operating Voltage: VCC = 2 V to 6 V Low Input Current: 1 µA max Low Quiescent Supply Current: ICC (static) = 4 µA max (Ta = 25°C) Function Table Inputs Enable G H L L L L Select B X L L H H A X L H L H Outputs Y0 H L H H H Y1 H H L H H Y2 H H H L H Y3 H H H H L HD74HC139 Pin Arrangement Enable 1G 1 1A 2 Select 1B 3 1Y0 4 Data Outputs 1Y1 5 1Y2 6 1Y3 7 GND 8 (Top view) B Y0 Y1 Y2 Y3 A B Y0 Y1 Y2 Y3 A G G 16 VCC 15 2G 14 2A Select 13 2B 12 2Y0 11 2Y1 10 2Y2 9 2Y3 Outputs Enable Data Outputs Logic Diagram (1/2) Enable Y0 A Y1 Y2 B Y3 2 HD74HC139 DC Characteristics Ta = 25°C Item Input voltage Symbol VIH Ta = –40 to +85°C Max — — — 0.5 1.35 1.8 — — — — — 0.1 0.1 0.1 0.33 0.33 ±1.0 40 µA µA I OL = 4 mA I OL = 5.2 mA Vin = VCC or GND V...
