M54HCT258

The M54/74HCT257 and the M54/74HCT258 are high speed CMOSMULTIPLEXERs fabricated with   silicon gate C²MOS technology.

M54/74HCT257 and the M54/74HCT258 have the same high speed performance of LSTTL combined with true CMOS low power consumption.

These M54/74HCT257 and the M54/74HCT258 IC's are composed of an independent 2- channelmultiplexer with commonSELECT and ENABLE INPUT.

The M54/74HCT258 is an inverting multiplexer while the M54/74HCT257 is a non-inverting multiplexer. When the ENABLE INPUT is held "High", outputs of both IC's become high-impedance state. If SELECTINPUTis held "Low", "A" datais selected, when SELECT INPUT is high "H", "B" data is chosen.

M54/74HCT257 and the M54/74HCT258 All inputs are equipped with protection circuits against static discharge and transient excess voltage.

This integrated circuit M54/74HCT257 and the M54/74HCT258 has input and output characteristics that are fully compatible with 54/74 LSTTL logic families. M54/74HCT devices are designed to directly interface HSC2MOS systems with TTL and NMOS components. They are also plug in replace-