74HCT251D,653

Signal Switches, Multiplexers, Decoders Overview

The Nexperia 74HCT251D,653 is an 8-bit multiplexer with three-state outputs housed in a 16-lead SO plastic small outline package (SOT109-1). It features eight binary inputs (I0 to I7), three select inputs (S0 to S2), and an active LOW output enable input (OE). The device operates on a supply voltage range of 4.5 V to 5.5 V and supports an ambient temperature range from -40 °C to +125 °C.

Signal Switches, Multiplexers, Decoders Feature Summary

• Provides non-inverting data path routing for one of eight binary inputs to complementary outputs based on select signals
• Features high noise immunity and low power CMOS dissipation characteristics
• Includes input clamp diodes allowing interface to voltages exceeding VCC using current limiting resistors

Signal Switches, Multiplexers, Decoders Applications

• Data routing in digital logic systems
• Signal selection circuits
• Multiplexing applications requiring three-state control

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the specific ordering suffix matches the required package variant. Confirm that the HCT logic level compatibility aligns with the system's TTL input requirements. Ensure the operating environment remains within the specified temperature and voltage limits defined in the datasheet.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when a single-ended 8-to-1 multiplexer with complementary outputs is required. The HCT series ensures compatibility with standard TTL logic levels. Verify that the 16-SO package dimensions fit the available PCB footprint constraints.

Signal Switches, Multiplexers, Decoders Part Context

This part belongs to the 74HCT family of high-speed CMOS logic devices manufactured by Nexperia. It serves as the HCT-compatible version of the 74HC251, designed specifically for operation with 5 V supplies and TTL input thresholds while maintaining CMOS output drive capabilities.

Signal Switches, Multiplexers, Decoders Replacement Considerations

Check for equivalent parts from other manufacturers offering the same 74HCT251 functionality in a 16-SO package. Ensure pinout compatibility and electrical specifications match before substitution.