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Brand: Generic | SKU: 4182656
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The 74HC257 is a quad 2-input multiplexer with 3-state outputs. Inputs include clamp diodes. This enables the use of current limiting resistors to interface inputs to voltages in excess of VCC.
Features:-
• Non-inverting data path
• 3-state outputs interface directly with system bus
• Complies with JEDEC standard no. 7A
• Input levels:
- For 74HC257: CMOS level
- For 74HCT257: TTL level
• ESD protection:
- HBM JESD22-A114F exceeds 2000 V
- MM JESD22-A115-A exceeds 200 V
• Multiple package options
Specification:-
| Symbol | Parameter | Value | Units | 
| VCC | Supply Voltage | – 0.5 to + 7.0 | V | 
| IIK | input clamping current | ±20 | mA | 
| IOK | output clamping current | ±20 | mA | 
| IO | output current | ±35 | mA | 
| ICC | supply current | ±70 | mA | 
  
   
  
 
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