STMicroelectronics 74V1T07STR

Overview

74V1T07STR from STMicroelectronics is a single high-speed CMOS buffer with open-drain output, designed for level-shifting and bus-driving applications between 5V and 3V systems. It features 4.3ns typical propagation delay at 5V, 1µA max quiescent current at 25°C, and input tolerance up to 7V independent of VCC - enabling robust interfacing in mixed-voltage digital systems.

For engineers reviewing the 74V1T07STR datasheet, 74V1T07STR pinout, 74V1T07STR application, or 74V1T07STR equivalent, key selection criteria include open-drain drive capability, 0–7V input voltage tolerance, sub-5ns timing performance, and SOT23-5L package compatibility with space-constrained PCB layouts.

Technical Context

This device implements a two-stage C2MOS buffer architecture with silicon-gate sub-micron process and double-layer metal interconnect. Its open-drain output supports wired-AND logic and I²C-compatible pull-up configurations, while power-down protection allows safe input biasing during VCC absence.

The input stage accepts 0–7V regardless of VCC (4.5–5.5V), enabling direct connection to 3.3V or 2.5V logic without external clamping. Output leakage is limited to ±5.0µA over full temperature range (-55°C to +125°C), ensuring reliable high-impedance state retention.

Key Specifications

Pinout & Package

SOT23-5L package: 5-pin surface-mount, 1.45mm height, 0.95mm pitch, moisture sensitivity level 1 (MSL1).

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC1G07DBVR and 74AUP1G07GW,125, the 74V1T07STR uniquely supports 0–7V inputs across 4.5–5.5V operation - making it the only choice for robust 5V↔3.3V translation without external protection components.

Availability

74V1T07STR is available at Aetrix Electronics and suitable for industrial automation interfaces, embedded sensor hubs, and legacy system upgrades requiring stable component supply with guaranteed long-term availability.

Supply support for 74V1T07STR 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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, delivering automotive, industrial, and power management solutions since 1987.

The 74V series targets high-speed, low-power logic interfacing in industrial and telecom infrastructure - emphasizing voltage tolerance, latch-up immunity, and extended temperature operation.

FAQ

Can 74V1T07STR be used with a 3.3V supply?

No - the 74V1T07STR is specified only for VCC = 4.5V to 5.5V. Its internal C2MOS structure requires 5V nominal operation; using 3.3V violates recommended conditions and may cause undefined output behavior or excessive propagation delay.

What is the maximum sink current at the 1Y output?

The 1Y output supports up to 8mA DC sink current with VOL ≤ 0.55V at VCC = 4.5V and TA = -55°C to +125°C. At 5.5V VCC and 25°C, it can sink 12mA while maintaining VOL ≤ 0.4V, per AC characterization curves.

Is Pin 1 (NC) required to be tied to ground?

No - Pin 1 is internally unconnected and must remain floating or optionally grounded for mechanical stability. Connecting it to VCC or any active signal risks unintended coupling or ESD path disruption, as confirmed by STMicroelectronics mechanical drawings and layout guidelines.

Does 74V1T07STR support I²C standard-mode timing?

Yes - with CL = 400pF and 1kΩ pull-up, its tPLZ/tPZL ≤ 9.0ns (max) at VCC = 5.0V meets I²C standard-mode (100kHz) rise/fall time requirements. The 0.55V VOL at 3mA ensures adequate noise margin against VIL thresholds of common I²C slaves.