TECHNICAL DATA IN74AC257 Quad 2-Input Data Selector/Multiplexer with 3-State Outputs High-Speed Silicon-Gate CMOS The IN74AC257 is identical in pinout to the LS/ALS257, HC/HCT257. The device inputs are compatible with standard CMOS outputs; with pullup resistors, they are compatible with LS/ALS outputs. This device selects a (4-bit) nibble from either the .
8 = GND Select X L H Outputs Y0-Y3 Z A0-A3 B0-B3
X=don’t care Z = high-impedance state A0-A3,B0-B3=the levels of the respective Nibble Inputs
356
IN74AC257
MAXIMUM RATINGS
*
Symbol VCC VIN VOUT IIN IOUT ICC PD Tstg TL
*
Parameter 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 Pac.
TECHNICAL DATA IN74AC257 Quad 2-Input Data Selector/Multiplexer with 3-State Outputs High-Speed Silicon-Gate CMOS The .
No. | Partie # | Fabricant | Description | Fiche Technique |
---|---|---|---|---|
1 | IN74AC251 |
IK Semiconductor |
8-1 Data Selector/Multiplexer | |
2 | IN74AC253 |
IK Semiconductor |
Dual 4-1 Data Selector/Multiplexer | |
3 | IN74AC258 |
IK Semiconductor |
Quad 2-1 Data Selector/Multiplexer | |
4 | IN74AC20 |
IK Semiconductor |
Dual 4-Input NAND Gate | |
5 | IN74AC21 |
IK Semiconductor |
Dual 4-Input AND Gate | |
6 | IN74AC240 |
IK Semiconductor |
Octal Buffer/Line Driver | |
7 | IN74AC241 |
IK Semiconductor |
Octal Buffer/Line Driver | |
8 | IN74AC244 |
Integral |
Octal 3-State Noninverting Buffer/Line Driver/Line Receiver High-Speed Silicon-Gate CMOS | |
9 | IN74AC244 |
IK Semiconductor |
Octal Buffer/Line Driver | |
10 | IN74AC245 |
Integral |
Octal 3-State Noninverting Bus Transceiver High-Speed Silicon-Gate CMOS | |
11 | IN74AC245 |
IK Semiconductor |
Octal Bus Transceiver | |
12 | IN74AC27 |
IK Semiconductor |
Triple 3-Input NOR Gate |