onsemi MC74VHC1G09DFT1

Overview

MC74VHC1G09DFT1 from onsemi is a single 2-input AND gate with open-drain output, fabricated in advanced CMOS silicon-gate technology. It operates from 2.0 V to 5.5 V, delivers 4.3 ns propagation delay at 5 V (typ), supports 8 mA output drive at 3.0 V, and features over-voltage tolerant inputs/outputs up to 5.5 V - enabling robust 3 V/5 V mixed-supply interfacing in logic-level translation circuits.

For engineers reviewing the MC74VHC1G09DFT1 datasheet, pinout, applications, or equivalent options, key selection considerations include open-drain output compatibility with wired-AND bus structures, IOFF partial power-down protection for hot-swap systems, and SC-88A package suitability for space-constrained PCB layouts.

Technical Context

This device implements standard positive-logic AND functionality with an open-drain output stage, requiring an external pull-up resistor to define high-level voltage and logic threshold. Its input structure tolerates voltages up to 5.5 V independent of VCC, allowing safe interfacing between higher-voltage control signals and lower-voltage logic domains.

The IC includes IOFF circuitry that disables input/output leakage paths when VCC = 0 V, preventing back-powering and signal contention during partial power-down. Propagation delays are specified across −55 °C to +125 °C and support both 15 pF and 50 pF load conditions per JEDEC AC test standards.

Key Specifications

Pinout & Package

MC74VHC1G09DFT1 is packaged in SC-88A (SOT-353), a 5-pin, 1.25 mm × 2.1 mm surface-mount package with 0.65 mm pitch and moisture sensitivity level 1.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar logic gate applications.

Compared with SN74LVC1G09DBVR and 74AUP1G09GW,125, the MC74VHC1G09DFT1 provides the best balance of speed (4.3 ns), wide VCC margin (2.0 V min), and proven industrial temperature reliability - making it optimal for real-time control and mixed-voltage interface designs where timing predictability is critical.

Availability

MC74VHC1G09DFT1 is available at Aetrix Electronics and suitable for industrial sensor interfaces, I²C bus expansion, and hot-swap power sequencing requiring stable component supply, long-term lifecycle support, and consistent parametric performance across temperature extremes.

Supply support for MC74VHC1G09DFT1 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

onsemi (formerly ON Semiconductor) is a global semiconductor supplier focused on energy-efficient innovation for automotive, industrial, cloud, and IoT applications.

The MC74VHC1G09DFT1 belongs to the VHC logic family - designed specifically for high-speed, low-power CMOS interfacing in mixed-voltage embedded systems where reliability across extended temperature ranges is essential.

FAQ

What is the maximum input voltage allowed on MC74VHC1G09DFT1 pins when VCC = 3.3 V?

The MC74VHC1G09DFT1 supports input voltages up to 5.5 V regardless of VCC level. When VCC = 3.3 V, inputs A and B may safely accept 5 V logic signals without damage or clamping - a key feature enabling direct 5 V-to-3.3 V interfacing without external level shifters. This over-voltage tolerance is guaranteed across the full operating temperature range.

Does MC74VHC1G09DFT1 support true tri-state operation?

No, the MC74VHC1G09DFT1 does not provide tri-state (high-impedance) output control. Its output is strictly open-drain: it can only actively pull low or float high via an external pull-up resistor. The "tri-state mode" referenced in the datasheet applies only to leakage current limits (IOZ) when the output is floating - not to controllable high-Z output states. For tri-state AND gates, consider alternatives like MC74VHC1G97.

What is the recommended pull-up resistor value for MC74VHC1G09DFT1's open-drain output?

For MC74VHC1G09DFT1, a 4.7 kΩ pull-up to VCC is typical for 3.3 V systems driving ≤15 pF load, achieving <10 ns rise time. At 5 V, 10 kΩ maintains adequate noise margin while limiting current to <0.5 mA. Values below 2.2 kΩ increase power dissipation unnecessarily; above 47 kΩ risk slow edges and noise susceptibility in noisy environments.

Can MC74VHC1G09DFT1 be used in automotive applications?

Yes, MC74VHC1G09DFT1 is qualified for operation from −55 °C to +125 °C and meets AEC-Q100 stress testing requirements for Grade 1 automotive applications. Its IOFF protection, over-voltage tolerant I/O, and Pb-free SC-88A package make it suitable for engine control, body electronics, and ADAS subsystems where mixed-voltage logic interfacing and hot-swap resilience are required.

Is MC74VHC1G09DFT1 pin-compatible with other SC-88A logic gates?

MC74VHC1G09DFT1 uses the standard SC-88A (SOT-353) 5-pin pinout: Pin 1 = B, Pin 2 = A, Pin 3 = GND, Pin 4 = Y, Pin 5 = VCC. This matches industry-standard assignments for single-gate logic devices in this package, including MC74VHC1G00, MC74VHC1G02, and SN74LVC1G09 - enabling layout reuse across functionally distinct but physically compatible logic functions.