74HCT251D-Q100J

Signal Switches, Multiplexers, Decoders Overview

The Nexperia 74HCT251D-Q100J is an 8-input multiplexer with three-state outputs, qualified to AEC-Q100 Grade 1 for automotive use. It features eight binary inputs (I0-I7), three select inputs (S0-S2), and an active LOW output enable (OE). Operating at a supply voltage of 4.5 V to 5.5 V, it accepts TTL-level inputs. The device provides non-inverting data paths to complementary outputs Y and Y. Propagation delay from input to output is typically 22 ns at 4.5 V. It operates within a temperature range of -40 °C to +125 °C in an SO16 package.

Signal Switches, Multiplexers, Decoders Feature Summary

• Automotive qualification compliant with AEC-Q100 Grade 1 standards
• TTL-compatible input levels for HCT logic family integration
• Three-state outputs controlled by active LOW enable signal
• High noise immunity and robust latch-up performance

Signal Switches, Multiplexers, Decoders Applications

• Automotive electronic systems requiring signal routing
• Data acquisition systems utilizing multiplexed inputs
• Industrial control applications operating in harsh environments

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the specific ordering code suffix against the manufacturer's current documentation to confirm package type and tape/reel specifications. Ensure the component meets the required AEC-Q100 Grade 1 qualification level for your target application. Confirm that the SO16 package dimensions align with your PCB footprint requirements before finalizing procurement orders.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when TTL logic compatibility is required alongside CMOS power efficiency. The 74HCT251-Q100 variant is appropriate for designs needing a wide operating temperature range up to +125 °C. Consider the three-state output capability if bus sharing or high-impedance isolation is necessary within the circuit architecture.

Signal Switches, Multiplexers, Decoders Part Context

This device belongs to the Nexperia 74HCT251-Q100 series of 8-bit multiplexers. It shares functional similarities with other members of the 74HCT family but is distinctively qualified for automotive reliability. The D suffix indicates the SO16 plastic small outline package, differentiating it from TSSOP variants like the PW suffix.

Signal Switches, Multiplexers, Decoders Replacement Considerations

Direct replacements include the 74HC251D-Q100J, though it requires CMOS-level input signals rather than TTL. Verify pinout compatibility and ensure the substitute supports the required 4.5 V to 5.5 V supply voltage range and automotive temperature specifications.