Diodes Incorporated 74LVCE1G07SE-7

Overview

74LVCE1G07SE-7 from Diodes Incorporated is a single non-inverting buffer/driver with open-drain output, designed for voltage-level shifting and signal isolation in mixed-voltage systems. It operates from 1.65 V to 5.5 V, supports 5.5 V-tolerant inputs, delivers 32 mA sink current at 4.5 V, and features IOFF partial-power-down protection. It is used in PC peripherals, set-top boxes, and GPS modules where bidirectional logic interfacing is required.

For engineers reviewing the 74LVCE1G07SE-7 datasheet, 74LVCE1G07SE-7 pinout, 74LVCE1G07SE-7 application, or 74LVCE1G07SE-7 equivalent, key selection criteria include open-drain drive strength, 5.5 V input tolerance, IOFF-enabled power-down isolation, and SOT353 package thermal performance under 85 °C ambient conditions.

Technical Context

This device implements a CMOS-based single-buffer function with true open-drain output architecture-no internal pull-up-enabling wired-OR/AND bus configurations. Its IOFF circuit actively disables both output FETs during VCC = 0 V, blocking back-current flow from powered downstream nodes.

Input thresholds are dynamically scaled per VCC (e.g., VIH = 0.7 × VCC at 4.5–5.5 V), ensuring reliable TTL- and CMOS-level compatibility across supply voltages. Propagation delay is specified down to 0.8 ns (typ.) at 3.3 V with 15 pF load, supporting high-speed enable/control signaling in compact embedded interfaces.

Key Specifications

Pinout & Package

SOT353 (SC-70-5) is a 5-pin, surface-mount plastic package with 0.65 mm pitch, 1.25 mm × 2.1 mm footprint, and exposed pad-less construction optimized for space-constrained PCB layouts.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar open-drain buffer applications.

Compared with SN74LVC1G07DBVR and 74LVC1G07GW,125, the 74LVCE1G07SE-7 uniquely combines 5.5 V input tolerance, 32 mA sink strength at 4.5 V, and IOFF protection in SOT353 - making it optimal for robust, mixed-rail enable and isolation functions where signal integrity and power sequencing safety are critical.

Availability

74LVCE1G07SE-7 is available at Aetrix Electronics and suitable for PC peripheral interfaces, set-top box control buses, GPS module power sequencing, and hard disk drive activity indicators requiring stable component supply across industrial temperature ranges and long-lifecycle programs.

Supply support for 74LVCE1G07SE-7 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

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability, low-power, and small-signal solutions for consumer, computing, and industrial markets.

The 74LVCE logic family targets low-voltage, mixed-supply digital interfacing - emphasizing voltage translation, power-aware isolation, and robust ESD performance in space-constrained designs.

FAQ

Can the 74LVCE1G07SE-7 be used with a 1.8 V supply and 3.3 V input signals?

Yes. The device supports VCC as low as 1.65 V and tolerates input voltages up to 5.5 V regardless of supply level. At VCC = 1.8 V, VIH is 0.65 × VCC ≈ 1.17 V, so a 3.3 V input is safely recognized as logic high without clamping or attenuation.

What happens to the output when VCC = 0 V?

When VCC drops to 0 V, the IOFF circuit disables both output FETs, limiting output leakage to ±10 μA. This prevents current from flowing backward into the device from externally pulled-up buses - protecting upstream drivers and ensuring safe partial power-down operation.

Is a pull-up resistor required on the Y output?

Yes. As an open-drain output, Y can only sink current. A pull-up resistor (typically 2.2 kΩ–10 kΩ to VCC or another rail) is mandatory to establish a defined high logic level. The value must balance rise time, power, and noise immunity based on bus capacitance and switching frequency.

Does the SOT353 package require thermal vias or an exposed pad?

No. The SOT353 (SC-70-5) package has no exposed thermal pad. Its θJA is 371 °C/W (FR-4, 2 oz Cu). For continuous 32 mA sink operation at 85 °C ambient, junction temperature stays below 125 °C without additional thermal relief - though localized copper pour improves margin.