TC74VHCT541AFTEL

Overview

The TC74VHCT541AFTEL is an octal bus buffer manufactured by Toshiba Semiconductor and Storage. It belongs to the VHCT logic series, utilizing CMOS technology with TTL-compatible inputs. The device features eight non-inverting input lines and eight three-state output lines within a single channel configuration. It operates within a supply voltage range of 4.5 V to 5.5 V. The component supports surface mount installation in a TSSOP-20 package. It exhibits a propagation delay of 5.4 ns, with high-level and low-level output currents of -8 mA and 8 mA respectively. Static current consumption is rated at 4 uA. The device is qualified under AEC-Q100 standards and functions reliably across an operating temperature range from -40°C to +125°C.

Feature Summary

• TTL-compatible inputs enable direct interfacing with standard TTL logic devices without requiring level shifting circuitry.
• Three-state outputs allow multiple drivers to share a common data bus while preventing signal contention.
• Automotive qualification ensures reliability and performance consistency for demanding environmental conditions.

Applications

• High-speed data bus buffering in automotive electronic control units
• Interface circuits between microprocessors and peripheral memory modules
• Signal distribution networks requiring isolation and drive strength enhancement

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official datasheet to confirm package type and tape-and-reel specifications. Ensure the procurement source provides valid traceability documentation. Confirm that the delivered components match the exact part number designation to avoid discrepancies in electrical characteristics or physical dimensions.

Selection Notes

Select this component when TTL-compatible input thresholds are required alongside CMOS power efficiency. The VHCT series is suitable for applications needing robust noise immunity at 5 V operation. Consider the wide industrial temperature range and automotive qualification if the design environment involves thermal stress or strict reliability standards.

Part Context

This part is a member of the TC74VHCT family, which bridges the gap between traditional TTL logic levels and modern CMOS processes. It serves as a critical interface element in systems where legacy digital signals must be buffered or routed through high-density integrated circuits without signal degradation.

Replacement Considerations

Direct pin-to-pin replacements include the TC74VHCT541AF and TC74VHCT541AFT. Verify that substitute parts maintain identical VHCT logic characteristics and AEC-Q100 qualification status to ensure functional compatibility.