Features: `TTL/NMOS Compatible Input Levels `Outputs Directly Interface to CMOS, NMOS, and TTL `Operating Voltage Range: 4.5 to 5.5 V `Low Input Current: 1.0A; 0.1A @ 25 `Outputs Source/Sink 24 mA PinoutSpecifications Symbol Parameter Value Unit VCCVINVOUTIINIOUTICCPDTstgTL ...
KK74ACT139: Features: `TTL/NMOS Compatible Input Levels `Outputs Directly Interface to CMOS, NMOS, and TTL `Operating Voltage Range: 4.5 to 5.5 V `Low Input Current: 1.0A; 0.1A @ 25 `Outputs Source/Sink 24 mA P...
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Symbol |
Parameter |
Value |
Unit |
VCC VIN VOUT IIN IOUT ICC PD Tstg TL |
DC Supply Voltage (Referenced to GND) DC Input Voltage (Referenced to GND) DC Output Voltage (Referenced to GND) DC Input Current, per Pin DC Output Sink/Source Current, per Pin DC Supply Current, VCC and GND Pins Power Dissipation in Still Air, Plastic DIP+ SOIC Package+ Storage Temperature Lead Temperature, 1 mm from Case for 10 Seconds (Plastic DIP or SOIC Package) |
-0.5 to +7.0 -0.5 to VCC +0.5 -0.5 to VCC +0.5 ±20 ±50 ±50 750 500 -65 to +150 260 |
V V V mA mA mA mW |
The KK74ACT139 is identical in pinout to the LS/ALS139,HC/HCT139. The KK74ACT139 may be used as a level converter for interfacing TTL or NMOS outputs to High Speed CMOS inputs.
This device consists of two independent 1-of-4 decoders, each of which decodes a two-bit Address to one-of-four active-low outputs. Active-low Selects are provided to facilitate the demultiplexing and cascading functions. The demultiplexing function is accomplished by using the Address inputs to select the desired device output, and utilizing the Select as a data input.