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Single-gate logic devices for automotive applications

3rd November 2020
Alex Lynn

Diodes Incorporated has announced new additions to its expanding portfolio of automotive-compliant logic devices. The 74AHC1GxxQ (standard CMOS) and 74AHCT1GxxQ (TTL compatible) devices are AEC-Q100 grade 1 qualified, manufactured in IATF 16949 certified facilities, and are PPAP capable.

Single-gate logic is used extensively in automotive systems, wherever a signal needs to be gated, buffered or inverted. The new devices offer two-input single-gate solutions for AND, OR, XOR, NAND, and NOR gates as well as inverters and buffers. The inverters are available with and without Schmitt trigger inputs while the buffers have three-state outputs with active-high or active-low output enable.

The CMOS compatible 74AHC1GxxQ devices operate from a supply voltage of between 2.0V and 5.5V, while the TTL compatible 7A4HCT1GxxQ devices operate from a supply voltage of between 4.5V and 5.5V. Propagation delays are typically between 4.5ns for the CMOS Inverter (74AHC1G04QSE-7) and 5.9ns for the TTL compatible Schmitt Trigger Inverter (74AHCT1G14QSE-7).

The 74AHC1GxxQ and 74AHCT1GxxQ join Diodes’ growing portfolio of automotive ‘1G’ logic devices – including its 74LVC1GxxQ family – making logic products the largest category of AEC-Q100 qualified products available from Diodes. Diodes, for highest reliability, has chosen to use die dedicated to automotive-compliant devices, removing circuitry under the bond pad and using gold bond wires.

The 74AHC1GxxQ, 74AHCT1GxxQ and 74LVC1GxxQ families are available now in both SOT25 and SOT353 packages, priced as $0.045 in 1,000 piece quantities.

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