概览
描述
The 74FCT257T is a high-speed quad 2-input multiplexer. The 74FCT257T has a common Output Enable (OE) input. When OE is high, all outputs are switched to a high-impedance state allowing the outputs to interface directly with bus-oriented systems. The 74FCT257T operates at -40C to +85C
特性
- A, C, and D speeds
- Low input and output leakage ?1 uA (max.)
- CMOS power levels
- True TTL input and output compatibility: – VOH = 3.3V (typ.) – VOL = 0.3V (typ.)
- High Drive outputs (-15mA IOH, 48mA IOL)
- Meets or exceeds JEDEC standard 18 specifications
- Power off disable outputs permit "live insertion"
- Available in 16 pin QSOP package
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