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Home > Products > Integrated Circuits (ICs) > Logic > Translators, Level Shifters

STMicroelectronics ST1G3236DTR

Name: ST1G3236DTR
Brand: STMicroelectronics
SKU: ST1G3236DTR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ST1G3236DTR

Manufacturer:: STMicroelectronics

Category:: Translators, Level Shifters

Package:

Datasheet:: ST1G3236DTR.pdf

Description:: IC TRANSLTR BIDIRECTIONAL 6DFN

Quantity:: RFQ Add To RFQ list

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Inventory:1,090

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Product details

Overview

ST1G3236DTR from STMicroelectronics is a 1-bit dual-supply bus transceiver level translator with integrated 26Ω A-side series resistors, designed for bidirectional voltage-level translation between 1.2V/1.8V/2.5V and 3.3V buses in mixed-voltage systems. It supports VCCA = 1.2–3.6V and VCCB = 1.2V to VCCA, delivers 4.0ns max propagation delay at 85°C, and draws ≤5μA quiescent current per supply.

For engineers reviewing the ST1G3236DTR datasheet, ST1G3236DTR pinout, ST1G3236DTR application, or ST1G3236DTR equivalent, key selection criteria include dual-rail operation range, direction-controlled asynchronous data flow, A-side output impedance matching, ESD-hardened I/O (2kV HBM), and DFN6L (1.2×1mm) footprint compatibility with space-constrained embedded interfaces.

Technical Context

The ST1G3236DTR implements a CMOS-based bidirectional level-shifting architecture where DIR pin state determines signal direction (A→B or B→A), and VCCA/VCCB supplies operate independently within defined voltage constraints (VCCB ≤ VCCA). Its internal logic includes input/output protection diodes and power-down isolation on all pins.

It features balanced tPLH/tPHL propagation delays (≤4.0ns), 26Ω series resistor on A1 output only, and rail-to-rail input thresholds referenced to respective supplies (VIHA = 0.65×VCCA, VIHB = 0.65×VCCB). The device meets JESD78 Class II latch-up immunity (>100mA) and JESD22-A114-A ESD rating (2000V HBM).

Key Specifications

Parameter	Value and Actual Design Meaning
Propagation Delay (tPD)	Max 4.0ns at TA = 85°C - enables ≥250MHz data rate in short-trace point-to-point links
VCCA Operating Range	1.2V to 3.6V - supports interface to 1.2V, 1.8V, 2.5V, or 3.3V logic domains as high-side supply
VCCB Operating Range	1.2V to VCCA - ensures safe operation only when VCCB ≤ VCCA, preventing reverse current flow
A-side Output Resistor	26Ω series termination - reduces ringing and EMI on A1 output without external components
Quiescent Current (ICCA/ICCB)	≤5μA at TA = 85°C - minimizes standby power in battery-backed or always-on system partitions
ESD Immunity (HBM)	2000V - protects against handling-induced discharge without requiring external TVS devices
Latch-up Immunity	>100mA per JESD78 Class II - ensures robustness during voltage transient events on I/O lines

Pinout & Package

ST1G3236DTR is housed in a 6-pin DFN package (1.2mm × 1.0mm, 0.4mm pitch) with wettable flanks and ECOPACK® lead-free finish. The package supports reflow soldering per JEDEC J-STD-020 and provides thermal performance suitable for low-power portable applications.

Pin/Terminal	Circuit Role	Design Meaning
1 VCCA	High-side supply rail	Power source for A-side I/O buffers and internal logic; sets VOHA/VOLA thresholds
2 GND	Digital ground reference	Common return path for both supply domains; must be low-inductance connection
3 A1	Bidirectional A-side data terminal	Connects to higher-voltage bus; includes 26Ω series resistor and ESD protection
4 B1	Bidirectional B-side data terminal	Connects to lower-voltage bus (VCCB); no series resistor; full rail-swing capability
5 DIR	Direction control input	Logic level referenced to VCCB; 'H' enables B→A transfer, 'L' enables A→B transfer
6 VCCB	Low-side supply rail	Power source for B-side I/O and DIR input; must not exceed VCCA

Key Features

Feature	Design Value
Asymmetric output termination	26Ω series resistor on A1 only - matches typical PCB trace impedance on high-voltage side while preserving drive strength on B1
Power-down I/O protection	Inputs and outputs remain high-impedance and clamped during VCCA/VCCB power loss - prevents back-driving of powered rails
Supply-rail-referenced thresholds	VIHA = 0.65×VCCA, VIHB = 0.65×VCCB - ensures reliable switching across full operating voltage ranges without external biasing
Matched propagation delays	tPLH ≅ tPHL - maintains data eye symmetry in high-speed bidirectional protocols like I²C or SMBus extensions
Low dynamic power	CPD = 29pF - limits switching current to ~0.9mA at 10MHz with 3.3V supply, reducing noise coupling

Applications

Industrial Sensor Interface

Portable MCU Peripherals

Use Scenario: Interfacing a 3.3V microcontroller GPIO to a 1.8V digital temperature sensor in a factory automation node.

IC Role / Device Role / Timing Role: Bidirectional level translator enabling I²C clock/data line translation with sub-4ns delay and no timing skew.

Use Value: Eliminates need for discrete resistor networks or active translators, saving PCB area and BOM cost while maintaining signal integrity at 400kHz I²C speeds.

Use Scenario: Connecting a 2.5V display driver IC to a 3.3V application processor in a handheld medical device.

IC Role / Device Role / Timing Role: Direction-controlled data path translator supporting burst-mode pixel data transfer with matched tPLH/tPHL.

Use Value: 26Ω A-side termination suppresses edge overshoot on 3.3V data lines, reducing radiated emissions in FCC/CE-certified designs.

Automotive Body Control Module

IoT Edge Node Subsystem

Use Scenario: Level-shifting between a 3.3V CAN transceiver's logic interface and a 1.2V ultra-low-power wake-up controller.

IC Role / Device Role / Timing Role: Asynchronous bidirectional translator with power-down isolation, enabling zero-current sleep mode when VCCA/VCCB are off.

Use Value: ≤5μA quiescent current per supply extends battery life in always-listening subsystems without compromising wake latency.

Use Scenario: Bridging a 3.3V Wi-Fi module's UART lines to a 1.8V secure element in a smart meter design.

IC Role / Device Role / Timing Role: Voltage-domain firewall with 2kV HBM ESD protection on both sides, preventing fault propagation between subsystems.

Use Value: Integrated ESD protection eliminates need for external TVS diodes, reducing component count and board space in compact 2-layer layouts.

Equivalent & Alternatives

The following parts are listed as comparable options for similar bidirectional level translation applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
TXS0101DCKR	No built-in series resistor; requires external 26Ω on A-side if needed; supports VCCA up to 5.5V	Better suited for 5V-tolerant systems; lacks native A-side termination for clean 3.3V edge control	Select when wider VCCA range or 5V compatibility is required, and external termination is acceptable
SN74AVC1T45DBVR	Higher ICC (10μA typ); no integrated series resistor; supports DIR-independent auto-direction sensing	Enables simpler wiring in unidirectional or auto-sensing configurations but increases layout complexity for fixed-direction use	Select when automatic direction detection is preferred over DIR pin control, and lower quiescent current is not critical

Compared with TXS0101DCKR and SN74AVC1T45DBVR, ST1G3236DTR uniquely combines guaranteed 26Ω A-side termination, ≤5μA quiescent current, and strict VCCB ≤ VCCA constraint-making it optimal for compact, low-power, fixed-direction 1.2V–3.3V translation where signal integrity and standby efficiency are prioritized.

Availability

ST1G3236DTR is available at Aetrix Electronics and suitable for industrial sensor interfaces, portable MCU peripherals, automotive body control modules, and IoT edge node subsystems requiring stable component supply and long-term obsolescence management.

Supply support for ST1G3236DTR 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, specializing in microcontrollers, power management, analog, and automotive-grade ICs with strong focus on industrial and embedded markets.

The ST1G3236 belongs to ST's low-voltage logic translation product line, engineered specifically for energy-efficient, space-constrained mixed-supply systems where precise voltage domain isolation and minimal BOM overhead are critical design requirements.

FAQ

Can ST1G3236DTR translate between 3.3V and 5V buses?

No. ST1G3236DTR is rated for VCCA up to 3.6V and VCCB up to VCCA; applying 5V to either supply exceeds absolute maximum ratings and risks permanent damage. For 5V translation, consider TXS0101 or similar 5V-tolerant translators.

Is the 26Ω series resistor present on both A1 and B1 pins?

No. The 26Ω series resistor is integrated only on the A1 output terminal. B1 has no internal series resistance and provides full drive strength directly to the VCCB domain, allowing flexible external termination if needed.

What happens to A1 and B1 when VCCA or VCCB is unpowered?

Both A1 and B1 enter high-impedance state with active ESD clamping diodes engaged, preventing back-current flow into unpowered supplies. This power-down protection is specified in the datasheet and verified per JESD78 latch-up testing.

Does DIR need to be driven from the VCCB domain?

Yes. The DIR input threshold is referenced to VCCB (VIHB = 0.65×VCCB), so it must be driven by a signal sourced from the VCCB domain or a compatible voltage level; driving from VCCA may cause undefined logic states or increased leakage.

ST1G3236DTR Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Translator Type:: Voltage Level

Channel Type:: Bidirectional

Number of Circuits:: 1

Channels per Circuit:: 1

Voltage - VCCA:: 1.2 V ~ 3.6 V

Voltage - VCCB:: 1.2 V ~ 3.6 V

Input Signal:: -

Output Signal:: -

Output Type:: Non-Inverted

Data Rate:: -

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Features:: Power-Off Protection

Mounting Type:: Surface Mount

Supplier Device Package:: 6-UFDFN

ST1G3236DTR FAQ

1.How can I place an order for ST1G3236DTR through Aetrix?

Please submit a Request for Quotation (RFQ) for ST1G3236DTR 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 ST1G3236DTR reliable?

The price and inventory of ST1G3236DTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ST1G3236DTR is usually 5 days.

3.What payment methods are accepted for ST1G3236DTR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ST1G3236DTR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ST1G3236DTR?

ST1G3236DTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ST1G3236DTR 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 ST1G3236DTR?

For technical support, including ST1G3236DTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ST1G3236DTR requirements.

6.How does Aetrix verify that ST1G3236DTR is sourced from the original manufacturer or authorized distributors?

All ST1G3236DTR 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 ST1G3236DTR meets industry standards.

7.What is the process for return or replacement of ST1G3236DTR?

All ST1G3236DTR units undergo pre-shipment inspection (PSI). If there is an issue with ST1G3236DTR, 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 ST1G3236DTR part is unused and in its original packaging.

Return procedure for ST1G3236DTR:

1.Submit a request within 90 days.

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

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