54AC257

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 V_CC + 0.5V
DC Output Source
or Sink Current (I_O) .................±50 mA
DC VCC or Ground Current
per Output Pin (ICC or I_GND) .............±50 mA
Storage Temperature (T_STG) .......−65°C to +150°C
Junction Temperature (T_J)
CDIP.......................... 175°C
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 54AC257 is a quad 2-input multiplexer with TRI-STATE outputs. Four bits of data from two sources can be selected using a Common Data Select input. The four outputs of 54AC257 present the selected data in true (noninverted) form. The outputs may be switched to a high impedance state by placing a logic HIGH on the common Output Enable (OE) input, allowing the outputs to interface directly with bus-oriented systems.

The 54AC257 is a quad 2-input multiplexer with TRI-STATE outputs. Four bits of data from two sources can be selected using a Common Data Select input. The four outputs present the selected data in true (noninverted) form. The outputs of 54AC257 may be switched to a high impedance state by placing a logic HIGH on the common Output Enable (OE#) input, allowing the outputs to interface directly with bus-oriented systems.