PinoutSpecifications Symbol Parameter Value Unit VCC DC Supply Voltage (Referenced to GND) -0.5 to +7.0 V VIN DC Input Voltage (Referenced to GND) -0.5 to VCC +0.5 V VOUT DC Output Voltage (Referenced to GND) -0.5 to VCC +0.5 V IIN DC Input...
KK74ACT138: PinoutSpecifications Symbol Parameter Value Unit VCC DC Supply Voltage (Referenced to GND) -0.5 to +7.0 V VIN DC Input Voltage (Referenced to GND) -0.5 to VCC +0...
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Symbol |
Parameter |
Value |
Unit |
VCC |
DC Supply Voltage (Referenced to GND) |
-0.5 to +7.0 |
V |
VIN |
DC Input Voltage (Referenced to GND) |
-0.5 to VCC +0.5 |
V |
VOUT |
DC Output Voltage (Referenced to GND) |
-0.5 to VCC +0.5 |
V |
IIN |
DC Input Current, per Pin |
±20 |
mA |
IOUT |
DC Output Sink/Source Current, per Pin |
±50 |
mA |
ICC |
DC Supply Current, VCC and GND Pins |
±50 |
mA |
PD |
Power Dissipation in Still Air, Plastic DIP+ SOIC Package+ |
750 500 |
mW |
Tstg |
Storage Temperature |
750 500 |
|
TL |
Lead Temperature, 1 mm from Case for 10 Seconds (Plastic DIP or SOIC Package) |
260 |
The KK74ACT138 is identical in pinout to the LS/ALS138, HC/HCT138. The KK74ACT138 may be used as a level converter for interfacing TTL or NMOS outputs to High Speed CMOS inputs.
The KK74ACT138 decodes a three-bit Address to one-of-eight active-lot outputs. This device features three Chip Select inputs, two active-low and one active-high to facilitate the demultiplexing, cascading, and chip-selecting functions. The demultiplexing function is accomplished by using the Address inputs to select the desired device output; one of the Chip Selects is used as a data input while the other Chip Selects are held in their active states.
• 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: 1.0 A; 0.1 A @ 25
• Outputs Source/Sink 24 mA