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Home > Products > Integrated Circuits (ICs) > Logic > Buffers, Drivers, Receivers, Transceivers

STMicroelectronics 74V1T70STR

Name: 74V1T70STR
Brand: STMicroelectronics
SKU: 74V1T70STR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 74V1T70STR

Manufacturer:: STMicroelectronics

Category:: Buffers, Drivers, Receivers, Transceivers

Package:: SC-74A, SOT-753

Datasheet:: 74V1T70STR.pdf

Description:: IC BUF NON-INVERT 5.5V SOT23-5

Quantity:: RFQ Add To RFQ list

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Product details

Overview

74V1T70STR from STMicroelectronics is a single non-inverting buffer IC in SOT23-5L package, designed for 5V logic level translation and interface isolation. It delivers 3.6ns typical propagation delay at 5V, ±8mA symmetrical output drive, and operates across 4.5–5.5V with 1µA max quiescent current-enabling low-power, high-speed signal conditioning in mixed-voltage systems.

For engineers reviewing the 74V1T70STR datasheet, 74V1T70STR pinout, 74V1T70STR application, or 74V1T70STR equivalent, key selection criteria include input overvoltage tolerance (0–7V independent of VCC), power-down protected inputs, balanced tPLH/tPHL timing, and compatibility with TTL-level drivers in industrial control and embedded I/O expansion.

Technical Context

This CMOS buffer uses sub-micron C2MOS technology with two-stage internal buffering to ensure high noise immunity and stable rail-to-rail output swing. Its input stage accepts 0–7V regardless of VCC, enabling safe interfacing between 5V and 3V domains without external clamping.

The device features symmetrical output impedance (|IOH| = IOL ≥ 8mA at VCC = 4.5V), matched propagation delays (tPLH ≅ tPHL), and latch-up immunity per JEDEC JESD78. It supports operation from –55°C to +125°C with guaranteed DC and AC performance across temperature and voltage ranges.

Key Specifications

Parameter	Value and Actual Design Meaning
tPD (typ)	3.6 ns at VCC = 5V - enables ≤278 MHz toggle rate in clean signal paths
VCC Range	4.5 V to 5.5 V - compatible with regulated 5V supply rails and tolerates ±10% variation
IOH/IOL (min)	±8 mA at VCC = 4.5V - drives standard TTL loads and short PCB traces without buffering
VIH/VIL	2.0 V / 0.8 V min/max - ensures reliable recognition of TTL-compatible input logic levels
ICC (max)	1 µA at TA = 25°C - supports ultra-low static power in battery-backed or always-on circuits
Input Voltage Range	0 V to 7 V - allows hot-plug-safe input operation even when VCC is unpowered
CIN	4 pF - minimizes capacitive loading on driving sources and preserves signal edge integrity

Pinout & Package

SOT23-5L package: 5-pin surface-mount, 1.45 mm height, 2.80 × 2.60 mm body, gull-wing leads, tape-and-reel delivery (74V1T70STR).

Pin/Terminal	Circuit Role	Design Meaning
1	NC	No internal connection - must be left floating or grounded per layout best practice
2	1A	CMOS-compatible data input with power-down protection and 0–7V tolerance
3	GND	Reference ground terminal - requires low-inductance connection to system ground plane
4	1Y	Push-pull buffered output with symmetrical sourcing/sinking capability (≥8 mA)
5	VCC	Positive supply input - bypassed with 100 nF ceramic capacitor near pin for noise suppression

Key Features

Feature	Design Value
Input overvoltage tolerance	0 V to 7 V independent of VCC - eliminates need for external clamping diodes in mixed-supply interfaces
Power-down protected input	Safe operation with VCC = 0 V while inputs active - prevents back-powering and latch-up during power sequencing
Balanced propagation delays	tPLH ≅ tPHL - reduces duty-cycle distortion in clock distribution and data strobe paths
Latch-up immunity	Compliant with JEDEC JESD78 Class II (>200 mA) - ensures robustness in noisy industrial environments

Applications

Industrial PLC I/O Expansion

Legacy System Voltage Translation

Use Scenario: Isolating microcontroller GPIOs from 5V field-side sensors and actuators in programmable logic controllers.

IC Role / Device Role / Timing Role: Single-buffer signal conditioner providing level-shifting, noise filtering, and drive strength enhancement.

Use Value: Enables direct 3.3V MCU interface to 5V industrial peripherals without external level shifters or pull-ups.

Use Scenario: Replacing obsolete TTL buffers in aging test equipment requiring 5V logic compatibility.

IC Role / Device Role / Timing Role: Drop-in CMOS replacement for 74LS07/74ALS07 with identical pinout and improved speed/power.

Use Value: Reduces system power by >95% versus legacy bipolar buffers while maintaining timing margins.

Automotive Body Control Module

Medical Diagnostic Instrument Interface

Use Scenario: Driving LED indicators and relay coils from low-voltage MCUs in automotive BCMs operating at 5V nominal.

IC Role / Device Role / Timing Role: Output driver buffer with enhanced ESD and latch-up immunity for under-hood environments.

Use Value: Withstands load-dump transients and meets AEC-Q100 stress requirements without additional protection circuitry.

Use Scenario: Conditioning digital trigger signals between FPGA-based acquisition modules and analog front-end ASICs.

IC Role / Device Role / Timing Role: Low-skew, low-capacitance buffer isolating sensitive analog sections from digital switching noise.

Use Value: 4 pF input capacitance and 3.6 ns tPD preserve signal fidelity in high-resolution time-of-flight measurements.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74LVC1G17DBVR	3.3V-only VCC range (1.65–5.5V); lower drive (24mA @ 3.3V); no 0–7V input tolerance	Requires external clamping for >VCC inputs; unsuitable for hot-swap or unregulated 5V domains	Select only if system operates strictly within 3.3V logic and input voltage never exceeds VCC
74AUP1G07GW,125	Wider VCC range (0.8–3.6V); higher ICC (5µA typ); no input overvoltage rating	Not rated for 5V operation or 7V input; limited to ultra-low-power sub-3.3V subsystems	Prefer for battery-powered sensor nodes where 5V compatibility is unnecessary

Compared with SN74LVC1G17DBVR and 74AUP1G07GW,125, the 74V1T70STR uniquely supports 5V operation with 0–7V input tolerance and sub-µA quiescent current-making it the only choice for robust 5V interface isolation where power sequencing or mixed-supply safety is critical.

Availability

74V1T70STR is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, automotive body control modules, and medical diagnostic instrument interface requiring stable component supply and long-term lifecycle support.

Supply support for 74V1T70STR 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, Switzerland, delivering silicon solutions for automotive, industrial, and consumer applications since 1987.

The 74V series targets high-speed, low-power CMOS logic for industrial and automotive systems requiring robustness, wide voltage tolerance, and extended temperature operation.

FAQ

What is the maximum input voltage the 74V1T70STR can tolerate when VCC is unpowered?

The 74V1T70STR accepts 0–7V on its input pin (1A) regardless of VCC state, including when VCC = 0V. This is enabled by internal power-down protection circuitry and makes it safe for hot-plug or partial-power-down scenarios without risk of back-powering or latch-up.

Can the 74V1T70STR be used as a level shifter between 3.3V and 5V logic domains?

Yes-it accepts 3.3V logic inputs (within VIH/VIL specs) and outputs full 5V-swing signals when powered at 5V. Its 0–7V input tolerance and TTL-compatible thresholds allow bidirectional use in 5V→3.3V receive paths, though dedicated level shifters are preferred for high-speed or bidirectional bus applications.

Is Pin 1 (NC) required to be left unconnected, or may it be tied to GND?

Pin 1 is internally not connected and must remain unconnected per STMicroelectronics' datasheet guidance. Tying it to GND or any other node provides no benefit and risks unintended coupling or mechanical stress on the bond wire; PCB layout should omit solder mask opening and avoid routing near this pad.

Does the 74V1T70STR meet AEC-Q100 for automotive use?

The 74V1T70STR is not officially AEC-Q100 qualified, but its specified operating temperature range (–55°C to +125°C), latch-up immunity (JEDEC JESD78 Class II), and robust input protection make it widely deployed in automotive body electronics. For safety-critical applications, formal qualification testing per AEC-Q100 Rev G is required.

74V1T70STR Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: 74V

Package/Case:: SC-74A, SOT-753

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Logic Type:: Buffer, Non-Inverting

Number of Elements:: 1

Number of Bits per Element:: 1

Input Type:: -

Output Type:: Push-Pull

Current - Output High, Low:: 8mA, 8mA

Voltage - Supply:: 4.5V ~ 5.5V

Operating Temperature:: -55°C ~ 125°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-23-5

74V1T70STR FAQ

1.How can I place an order for 74V1T70STR through Aetrix?

Please submit a Request for Quotation (RFQ) for 74V1T70STR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for 74V1T70STR reliable?

The price and inventory of 74V1T70STR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74V1T70STR is usually 5 days.

3.What payment methods are accepted for 74V1T70STR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74V1T70STR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 74V1T70STR?

74V1T70STR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 74V1T70STR order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for 74V1T70STR?

For technical support, including 74V1T70STR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74V1T70STR requirements.

6.How does Aetrix verify that 74V1T70STR is sourced from the original manufacturer or authorized distributors?

All 74V1T70STR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that 74V1T70STR meets industry standards.

7.What is the process for return or replacement of 74V1T70STR?

All 74V1T70STR units undergo pre-shipment inspection (PSI). If there is an issue with 74V1T70STR, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The 74V1T70STR part is unused and in its original packaging.

Return procedure for 74V1T70STR:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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