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

Diodes Incorporated 74AVC1T45FW5-7

Name: 74AVC1T45FW5-7
Brand: Diodes Incorporated
SKU: 74AVC1T45FW5-7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 74AVC1T45FW5-7

Manufacturer:: Diodes Incorporated

Category:: Translators, Level Shifters

Package:

Datasheet:: 74AVC1T45FW5-7.pdf

Description:: IC TRNSLTR BIDIR X1DFN1010-6

Quantity:: RFQ Add To RFQ list

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Inventory:1,049

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Product details

Overview

74AVC1T45FW5-7 from Diodes Incorporated is a single-bit, dual-supply translating transceiver with 3-state outputs, designed for bidirectional voltage-level translation between 1.2V and 3.6V domains. It features independent VCCA (1.2–3.6V) and VCCB (1.2–3.6V) supplies, ±12mA drive at 3.3V, 100mV typical input hysteresis, and I_OFF protection enabling partial-power-down isolation. It is used in mobile SoC interconnects where logic domains operate at mismatched voltages.

For engineers reviewing the 74AVC1T45FW5-7 datasheet, 74AVC1T45FW5-7 pinout, 74AVC1T45FW5-7 application, or 74AVC1T45FW5-7 equivalent, key selection criteria include bidirectional translation range, I_OFF behavior under zero-V_CC, DIR pin referencing to VCCA, 3-state leakage (<±0.5μA), and X1-DFN1010-6 thermal resistance (510°C/W).

Technical Context

The device implements a direction-controlled, dual-rail CMOS transceiver architecture with separate A-side (VCCA-referenced) and B-side (VCCB-referenced) I/O buffers. DIR is referenced to VCCA and determines signal flow: high enables A→B, low enables B→A. Tri-state activation occurs when either VCCA or VCCB drops to 0V - not via an explicit OE pin - enabling automatic power-down isolation.

Its I_OFF circuitry ensures <±0.1μA leakage per I/O pin when either supply is at 0V while the other remains up to 3.6V, preventing back-current and maintaining high-impedance integrity across both A and B pins. Input tolerance extends to 4.6V regardless of supply state, supporting mixed-voltage hot-swap scenarios.

Key Specifications

Parameter	Value and Actual Design Meaning
VCCA Range	1.2V to 3.6V - sets logic threshold and output swing for A-side I/O and DIR control
VCCB Range	1.2V to 3.6V - defines B-side output voltage compliance and input reference
Output Drive	±12mA at 3.0V VCC - supports driving 50Ω transmission lines or fan-out to ≥10 LVTTL loads
Hysteresis	100mV typical - improves noise immunity on slow or noisy control signals like DIR
I_OFF Leakage	±0.1μA max at 0V supply - enables safe partial-power-down without external isolation switches
Input Tolerance	Up to 4.6V - allows interfacing with higher-voltage peripherals without level-shifting on unused inputs
Propagation Delay	2.2ns to 3.3ns (A↔B, 3.3V) - meets timing closure for sub-200MHz bidirectional data paths

Pinout & Package

X1-DFN1010-6 is a 1.0mm × 1.0mm, 0.39mm height, 6-pin chip-scale package with wettable flanks, optimized for space-constrained mobile PCBs and compatible with standard reflow profiles. Pin 1 is marked by a chamfered corner.

Pin/Terminal	Circuit Role	Design Meaning
VCCA	Supply for A-side I/O and DIR reference	Must be stable before DIR assertion; powers A buffer and defines DIR logic thresholds
GND	Digital ground reference	Common return for both domains; requires low-inductance connection to minimize switching noise coupling
A	Bidirectional data terminal (VCCA domain)	Connects to 1.2–3.6V logic; tolerates up to 4.6V even when VCCA = 0V
B	Bidirectional data terminal (VCCB domain)	Connects to independent 1.2–3.6V logic; same overvoltage tolerance as A
DIR	Direction control input (VCCA-referenced)	High = A→B; Low = B→A; no internal pull-up/down - must be actively driven
VCCB	Supply for B-side I/O	Independent of VCCA; enables true dual-domain operation without shared rail constraints

Key Features

Feature	Design Value
Dual-supply translation	Enables seamless interface between disparate voltage domains (e.g., 1.8V FPGA core ↔ 3.3V peripheral bus)
I_OFF partial-power-down	Prevents back-current and maintains high-Z state when either VCCA or VCCB = 0V - eliminates need for external power-gating FETs
4.6V-tolerant inputs	Supports "live insertion" into powered systems and simplifies interface with legacy 5V-tolerant logic without clamping diodes
100mV input hysteresis	Rejects noise on DIR or data lines in electrically noisy environments (e.g., mobile baseband sections)
X1-DFN1010-6 footprint	Reduces board area by >60% vs. SOT26; enables routing under package and improves thermal performance in dense layouts

Applications

Mobile SoC Interconnect

Low-Power Sensor Hub Interface

Use Scenario: Connecting a 1.2V application processor core to a 1.8V display interface controller in smartphones.

IC Role / Device Role / Timing Role: Bidirectional voltage translator managing DDR clock enable, reset, and status signals across voltage islands.

Use Value: Eliminates discrete resistor-divider or active translators, reduces BOM count, and guarantees sub-3ns propagation delay for timing-critical control lines.

Use Scenario: Isolating a 3.3V environmental sensor array from a 1.2V ultra-low-power microcontroller during sleep mode.

IC Role / Device Role / Timing Role: Direction-controlled data bridge that auto-enters high-Z when VCCA = 0V (MCU off), blocking leakage into sensor supply.

Use Value: Achieves <1μA system standby current by leveraging I_OFF, avoiding dedicated load switches and simplifying power sequencing.

USB-C Power Delivery Negotiation

Wearable Battery Management Link

Use Scenario: Level-shifting CC line communication between a 3.3V PD controller and a 1.8V system management unit.

IC Role / Device Role / Timing Role: Transceiver handling bi-phase mark encoded PD messages with precise edge timing and robust noise rejection.

Use Value: 100mV hysteresis prevents false toggling on noisy CC lines; 4.6V tolerance accommodates transient overshoot during plug insertion.

Use Scenario: Transmitting fuel gauge and temperature telemetry from a 2.8V battery monitor IC to a 1.2V wearable SoC.

IC Role / Device Role / Timing Role: Low-leakage, low-capacitance translator preserving signal integrity on millivolt-level analog-digital hybrid buses.

Use Value: CIO = 6.0pF minimizes loading on sensitive ADC reference paths; ±0.1μA I_OFF prevents battery drain during host sleep.

Equivalent & Alternatives

The following parts are listed as comparable options for similar single-bit bidirectional voltage translation applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74AVC1T45DCKR	Same function but in SC70-6 (2.0×1.25mm); higher θ_JA (338°C/W); no 4.6V input tolerance	Larger footprint; less suitable for ultra-thin mobile designs; requires external clamping for >3.6V inputs	Select if SC70 assembly infrastructure exists and board area is not constrained
FXMA108MTCX	8-bit, auto-direction sensing; no DIR pin; higher ICC (20μA typ); 1.65–3.6V only	Eliminates direction control logic but lacks manual override; narrower voltage range limits 1.2V/1.8V use cases	Select for multi-bit, direction-agnostic buses where automatic sensing suffices and VCC min ≥1.65V

Compared with SN74AVC1T45DCKR, 74AVC1T45FW5-7 offers 37% smaller footprint and guaranteed 4.6V input tolerance; versus FXMA108MTCX, it provides deterministic DIR control and full 1.2V compatibility - critical for next-gen ultra-low-power SoCs.

Availability

74AVC1T45FW5-7 is available at Aetrix Electronics and suitable for mobile device interconnects, wearable sensor subsystems, USB-C power delivery interfaces, and battery management telemetry requiring stable component supply across extended product lifecycles.

Supply support for 74AVC1T45FW5-7 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 semiconductor company specializing in discrete, analog, and logic solutions for consumer, computing, communications, and industrial markets.

The 74AVC logic family targets low-voltage, high-speed digital interface applications, with the 74AVC1T45 specifically engineered for space- and power-constrained bidirectional voltage translation in portable electronics.

FAQ

Can 74AVC1T45FW5-7 translate between 1.2V and 3.3V simultaneously?

Yes. With VCCA = 1.2V and VCCB = 3.3V, the device fully supports bidirectional translation: A-side signals swing 0–1.2V and are translated to 0–3.3V on B, and vice versa. The DIR pin must be driven at VCCA-referenced logic levels (0.35×VCCA low, 0.65×VCCA high), so a 1.2V-compatible driver is required.

What happens to the outputs when VCCA = 0V and VCCB = 3.3V?

Both A and B pins enter high-impedance (3-state) due to I_OFF activation. Output leakage is limited to ±0.1μA maximum, and the pins tolerate up to 3.6V - allowing safe connection to live 3.3V buses without back-driving or latch-up risk.

Is a pull-up or pull-down required on the DIR pin?

No. DIR has no internal termination and must be actively driven by a logic source referenced to VCCA. Leaving DIR floating violates the recommended operating conditions and may cause undefined direction states or increased ICC. A dedicated GPIO or level-shifter output is required.

Does the X1-DFN1010-6 package support automated optical inspection (AOI)?

Yes. The X1-DFN1010-6 uses a top-side chamfered corner for Pin 1 identification and has exposed copper pads compatible with standard AOI algorithms. Its wettable flank design enables reliable solder joint inspection via side-view cameras, meeting IPC-A-610 Class 2 requirements for consumer electronics.

74AVC1T45FW5-7 Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: 74AVC

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:: Tri-State

Data Rate:: -

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

Grade:: -

Qualification:: -

Features:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 6-XFDFN

74AVC1T45FW5-7 FAQ

1.How can I place an order for 74AVC1T45FW5-7 through Aetrix?

Please submit a Request for Quotation (RFQ) for 74AVC1T45FW5-7 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 74AVC1T45FW5-7 reliable?

The price and inventory of 74AVC1T45FW5-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74AVC1T45FW5-7 is usually 5 days.

3.What payment methods are accepted for 74AVC1T45FW5-7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74AVC1T45FW5-7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 74AVC1T45FW5-7?

74AVC1T45FW5-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 74AVC1T45FW5-7 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 74AVC1T45FW5-7?

For technical support, including 74AVC1T45FW5-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74AVC1T45FW5-7 requirements.

6.How does Aetrix verify that 74AVC1T45FW5-7 is sourced from the original manufacturer or authorized distributors?

All 74AVC1T45FW5-7 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 74AVC1T45FW5-7 meets industry standards.

7.What is the process for return or replacement of 74AVC1T45FW5-7?

All 74AVC1T45FW5-7 units undergo pre-shipment inspection (PSI). If there is an issue with 74AVC1T45FW5-7, 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 74AVC1T45FW5-7 part is unused and in its original packaging.

Return procedure for 74AVC1T45FW5-7:

1.Submit a request within 90 days.

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

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