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Datasheet HC257 Equivalent ( PDF ) |
| N.º | Número de pieza | Descripción | Fabricantes | |
| 5 | HC257 | Quad 2-Input Data Selector/Multiplexer with 3-State Outputs SL74HC257
Quad 2-Input Data Selector/Multiplexer with 3-State Outputs
High-Performance Silicon-Gate CMOS
The SL74HC257 is identical in pinout to the LS/ALS257. The device inputs are compatible with standard CMOS outputs; with pullup resistors, they are compatible with LS/ALSTTL outputs. This device |
 System Logic Semiconductor |
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| 4 | HC257 | Quad 2-Input Data Selector/Multiplexer with 3-State Outputs MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
Quad 2-Input Data Selector/Multiplexer with 3-State Outputs
High–Performance Silicon–Gate CMOS
The MC74HC257 is identical in pinout to the LS257. The device inputs are compatible with standard CMOS outputs; with pullup resistors, they are compatible with L |
 Motorola Inc |
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| 3 | HC257 | QUAD 2 CHANNEL MULTIPLEXER 3-STATE ®
74VHC257
QUAD 2 CHANNEL MULTIPLEXER (3-STATE)
s s
s
s s
s
s
s
s s
HIGH SPEED: tPD = 3.7 ns (TYP.) at VCC = 5V LOWPOWER DISSIPATION: ICC = 4 µA (MAX.) at TA = 25 oC HIGH NOISE IMMUNITY: VNIH = VNIL = 28% VCC (MIN.) POWER DOWN PROTECTION ON INPUTS SYMMETRICAL OUTPUT IMPEDANCE: |IOH| = IOL |
 STMicroelectronics |
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| 2 | HC257 | QUAD 2-CHANEL MULTIPLEXER (3-STATE) |
 Toshiba Semiconductor |
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