HC138 QT QT Optoelectronics, HC138 Datasheet

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... Decoder/Demultiplexer High-Performance Silicon-Gate CMOS The SL74HC138 is identical in pinout to the LS/ALS138. The device inputs are compatible with standard CMOS outputs; with pullup resistors, they are compatible with LS/ALSTTL outputs. The SL74HC138 decodes a three-bit Address to one-of-eight active- low outputs. This device features three Chip Select inputs, two active- low and one active-high to facilitate the demultiplexing, cascading, and chip-selecting functions ...

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... SL74HC138 * MAXIMUM RATINGS Symbol V DC Supply Voltage (Referenced to GND Input Voltage (Referenced to GND Output Voltage (Referenced to GND) OUT I DC Input Current, per Pin Output Current, per Pin OUT I DC Supply Current Power Dissipation in Still Air, Plastic DIP+ ...

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... 4.5 OUT 6 4.0 mA 4.5 OUT I 5.2 mA 6.0 OUT 2 4.5 OUT 6 4.0 mA 4.5 OUT I 5.2 mA 6.0 OUT GND 6 GND 6 OUT SL74HC138 Guaranteed Limit 125 Unit -55 C 1.5 1.5 1.5 V 3.15 3.15 3.15 4.2 4.2 4.2 0.5 0.5 0.5 V 1.35 1.35 1.35 1.8 1.8 1.8 1.9 1.9 1.9 V 4.4 4.4 4.4 5.9 5.9 5.9 3.98 3.84 3.7 5.48 5.34 5.2 0.1 0.1 0.1 V 0.1 0.1 0.1 0.1 0.1 0.1 0.26 0.33 0.4 0.26 0.33 ...

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... SL74HC138 AC ELECTRICAL CHARACTERISTICS Symbol Parameter Maximum Propagation Delay, Input A to PLH PHL Output Y (Figures 1 and Maximum Propagation Delay , CS1 to PLH PHL Output Y (Figures 2 and Maximum Propagation Delay , CS2 or CS3 to PLH PHL Output Y (Figures 3 and Maximum Output Transition Time, Any Output ...

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... Figure 3. Switching Waveforms EXPANDED LOGIC DIAGRAM System Logic SLS Semiconductor SL74HC138 Figure 4. Test Circuit ...