The TC74HC257AP is a high-speed CMOS quad 2-channel multiplexer fabricated with silicon gate C2MOS technology. It achieves high-speed operation similar to equivalent LSTTL while maintaining the low power dissipation of CMOS. The device selects one of two data sources from each of the four channels, controlled by a common select input (S).

Applications

• Data routing
• Multiplexing signals
• Logic function implementation
• Digital systems requiring data selection

Features

• High-speed operation: tpd = 12 ns (typ.) at VCC = 5V
• Low power dissipation: ICC = 4 μA (max) at Ta = 25°C
• Wide operating voltage range: VCC = 2 to 6 V
• High noise immunity: VNIH = VNIL = 28 % VCC (min)
• Output drive capability: 10 LSTTL loads
• Pin and function compatible with 74LS257

Benefits

• Fast signal processing due to high-speed operation.
• Energy-efficient design with low power consumption.
• Flexible integration in different voltage environments with its wide operating voltage range.
• Reliable operation even with noisy input signals due to high noise immunity.
• Ability to drive multiple devices with its high output drive capability.
• Easy replacement or upgrade of existing systems due to pin compatibility with standard 74LS257 devices.

Additional Details

The TC74HC257AP is a quad 2-input multiplexer. When the Output Enable (OE) is high, the output is forced to a high impedance state. The device is supplied in a DIP16 package. Operating temperature ranges from -40°C to +85°C.