54ACT138

If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications.

Supply Voltage (V_CC)..... -0.5V to +7.0V
DC Input Diode Current (I_IK)
V_I = -0.5V ...............-20 mA
V_I = V_CC + 0.5V ............+20 mA
DC Input Voltage (V_I) ...-0.5V to V_CC + 0.5V
DC Output Diode Current (I_OK)
V_O = -0.5V.............. .-20 mA
V_O = V_CC + 0.5V............ +20 mA
DC Output Voltage (V_O).-0.5V to to V_CC + 0.5V
DC Output Source
or Sink Current (I_O) ..........±50 mA
DC VCC or Ground Current
per Output Pin (I_CC or I_GND) ......±50 mA
Storage Temperature (T_STG) ..−65 to +150
Junction Temperature (T_J)
CDIP ....................175

Note 1: Absolute maximum ratings are those values beyond which damage to the device may occur. The databook specifications should be met, without exception, to ensure that the system design is reliable over its power supply,temperature, and output/input loading variables. National does not recommend operation of FACT® circuits outside databook specifications.

The 54ACT138 is a high-speed 1-of-8 decoder/ demultiplexer. This device is ideally suited for high-speed bipolar memory chip select address decoding. The multiple input enables allow parallel expansion to a 1-of-24 decoder using just three 54ACT138 devices or a 1-of-32 decoder using four 'AC/'ACT138 devices and one inverter.

The 54ACT138 is a high-speed 1-of-8 decoder/demultiplexer. This device is ideally suited for high-speed bipolar memory chip select address decoding. The multiple input enables allow parallel expansion to a 1-of-24 decoder using just three 54ACT138 devices or a 1-of-32 decoder using four 54ACT138 devices and one inverter.

Application Notes