ADG3301 Analog Devices Transistor (SOT23 (6-Pin)) In Stock
Analog Devices ADG3301 is a single-channel bidirectional logic-level translator operating from 1.15V to 5.5V, enabling signal translation between any two voltage domains without direction control pins. It supports data rates suited for I2C, SPI, and UART interfaces in a 6-pin SOT-23 package. Available from stock with worldwide shipping.
- Manufacturer
- Analog Devices
- Package
- SOT23 (6-Pin)
- Pin Count
- 6
- Lifecycle
- ACTIVE
- Datasheet
- ADG3301 Datasheet PDF
- Category
- Transistor
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Bidirectional single-channel level translation across any two voltages from 1.15V to 5.5V without direction control pin
- Automatic direction sensing enabling transparent I2C, SPI, and UART signal translation with no firmware overhead
- Ultra-compact 6-pin SOT-23 package occupying less than 10 mm² of board area for space-constrained mixed-voltage designs
- Wide supply range from 1.15V to 5.5V covering 1.2V, 1.8V, 2.5V, 3.3V, and 5V logic families in a single device
- 3-state output compatibility allowing passive power-off with no back-drive current when supply is removed
Applications
ADG3301 is used at interfaces between microcontrollers and peripherals operating at different logic voltages, such as bridging a 3.3V microcontroller I2C bus to a 1.8V sensor or memory device without needing a direction pin or firmware control. It simplifies mixed-voltage SPI and UART connections on IoT modules, wearable sensor boards, and portable medical devices where multiple voltage domains coexist. Battery-powered systems with 1.2V or 1.8V DSPs communicating with 5V legacy peripherals rely on ADG3301's wide operating range to eliminate external resistor dividers.
Specifications
| YTEOL | 10 |
| Interface IC Type | VOLTAGE LEVEL TRANSLATOR |
| JESD-30 Code | R-PDSO-G6 |
| Number of Bits | 1 |
| Number of Functions | 1 |
| Output Characteristics | 3-STATE |
| Output Polarity | TRUE |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP6,.08 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| Qualification Status | Not Qualified |
| Supply Voltage-Max | 5.5V |
| Supply Voltage-Min | 1.15V |
| Supply Voltage-Nom | 1.2V |
| Supply Voltage1-Max | 5.5V |
| Supply Voltage1-Min | 1.65V |
| Supply Voltage1-Nom | 1.8V |
| Surface Mount | YES |
| Temperature Grade | INDUSTRIAL |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Package | SOT23 (6-Pin) |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for ADG3301:
Frequently Asked Questions
How does ADG3301 translate signals bidirectionally without requiring a direction control pin?
ADG3301 uses a passive MOSFET-based circuit that senses the driving side by detecting which port pulls the line low first, then turns on the transistor to propagate the logic transition to the other side. This automatic direction sensing operates with data rates up to several Mbps, making it transparent to I2C at 400 kHz or SPI at 1 MHz without any direction pin or GPIO control.
Which mixed-voltage domain combinations can ADG3301 bridge in a multi-rail embedded system?
ADG3301 bridges any two voltage domains where each side is independently powered between 1.15V and 5.5V, covering common combinations such as 1.2V to 1.8V, 1.8V to 3.3V, 2.5V to 5V, and 3.3V to 5V. With 1 bit of translation per device, multiple ADG3301 units can be placed in parallel to handle multi-signal buses while keeping per-channel area under 10 mm².
For an I2C bus connecting a 3.3V MCU to a 1.8V IMU sensor, what component count does ADG3301 save compared to a resistor-divider approach?
A resistor divider requires 2 resistors per signal line, meaning 4 resistors for SDA and SCL, and it only translates unidirectionally. ADG3301 replaces 4 resistors with a single 6-pin SOT-23 device per line pair, providing true bidirectional translation and eliminating the loading and speed degradation that high-value resistor dividers impose on I2C rise times constrained to 300 ns for 400 kHz Fast-mode.
What happens to ADG3301's outputs when its supply voltage is removed in a partial power-down scenario?
ADG3301 enters a 3-state high-impedance output condition when either supply rail is removed, preventing back-drive current from flowing into the unpowered domain. This ensures that adjacent powered ICs sharing the signal line are not damaged by unintended current paths through the translator, a critical behavior in systems where sub-circuits are sequentially powered down to extend battery life.
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