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Analog Devices Inc. ADG3308BRUZ
- Part No.:
- ADG3308BRUZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Translators, Level Shifters
- Package:
- Datasheet:
-
ADG3308BRUZ.pdf
- Description:
- IC TRNSLTR BIDIRECTIONAL 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:536
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Product details
Overview
ADG3308BRUZ from Analog Devices is an 8-channel bidirectional logic level translator IC designed for multivoltage digital system interfacing, supporting VCCA = 1.15 V to 5.5 V and VCCY = 1.65 V to 5.5 V with VCCA < VCCY constraint, 50 Mbps max data rate (A→Y/Y→A), <1 μA quiescent current, and no direction pin. It enables reliable data transfer between low-voltage DSPs and higher-voltage peripherals in portable and embedded systems.
For engineers reviewing the ADG3308BRUZ datasheet, ADG3308BRUZ pinout, ADG3308BRUZ application, or ADG3308BRUZ equivalent, this page delivers verified specifications, TSSOP-20 pin mapping, real-world use cases in smart card readers and telecom equipment, and two validated alternative parts with technical and application-level distinctions.
Technical Context
The ADG3308BRUZ implements a one-shot accelerator architecture per channel, using PMOS/NMOS transistor pairs triggered by edge detection to achieve fast rise/fall times and low propagation skew. Its dual-supply design isolates A-side (VCCA-referenced) and Y-side (VCCY-referenced) logic domains without external direction control.
Enable (EN) operates referenced to VCCY and places both A and Y I/Os into high-impedance state when low, reducing ICCA/ICCY to ≤1 μA. Input thresholds scale with supply voltages (VIHA = 0.65×VCCA, VIHY = 0.65×VCCY), ensuring robust noise margins across voltage combinations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCCA Range | 1.15 V to 5.5 V - sets A-side logic levels; must be strictly less than VCCY for correct operation |
| VCCY Range | 1.65 V to 5.5 V - sets Y-side logic levels; defines upper bound of supported translation (e.g., 1.2 V ↔ 1.8 V, 1.8 V ↔ 3.3 V, 3.3 V ↔ 5 V) |
| Max Data Rate | 50 Mbps (A→Y and Y→A) - guaranteed under CL = 50 pF (A→Y) or CL = 15 pF (Y→A) with 50 Ω source/load |
| Propagation Delay | 4–10 ns - varies with supply pair (e.g., tP,Y→A = 4–7 ns at 1.8 V/3.3 V; tP,A→Y = 6–10 ns at 3.3 V/5 V) |
| Quiescent Current | <1 μA total (ICCA + ICCY) - enables ultra-low-power operation in battery-powered devices during active translation |
| Channel Count | 8 independent bidirectional channels - supports parallel bus translation (e.g., I²C, SPI, GPIO banks) without external logic |
| Enable Reference | VCCY-referenced EN input - simplifies control interface when VCCY is the system master supply rail |
Pinout & Package
ADG3308BRUZ is packaged in a 20-lead TSSOP (RU-20) with exposed pad (optional GND connection). Pin numbering follows standard top-view layout with A-side I/Os on left, Y-side I/Os on right, and power/enable centrally located.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCCA | A-side power supply input; defines logic thresholds for A1–A8; must be < VCCY |
| 2–9 | A1–A8 | Bidirectional A-side I/Os; referenced to VCCA; tolerate −0.3 V to (VCCA + 0.3 V) |
| 10 | EN | Active-high enable; referenced to VCCY; drives both sides to high-Z when low |
| 11 | GND | Analog/digital ground reference for internal circuitry and ESD protection |
| 12–19 | Y8–Y1 | Bidirectional Y-side I/Os; referenced to VCCY; tolerate −0.3 V to (VCCY + 0.3 V) |
| 20 | VCCY | Y-side power supply input; defines logic thresholds for Y1–Y8; must be ≥ VCCA |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional auto-sensing translation | No direction pin required - internal edge-detect circuitry automatically determines signal flow (A→Y or Y→A) |
| Scalable voltage translation | Supports 1.15 V ↔ 1.8 V, 1.8 V ↔ 3.3 V, and 3.3 V ↔ 5 V combinations with guaranteed timing and noise margin |
| Ultra-low static power | ≤1 μA total supply current (ICCA + ICCY) at 5.5 V - extends battery life in always-on portable interfaces |
| Low channel-to-channel skew | ≤4 ns (A→Y) and ≤3.5 ns (Y→A) - ensures timing integrity across parallel data buses like memory or display interfaces |
| Three-state enable control | Single EN pin disables all 16 I/Os simultaneously, reducing system-level leakage and enabling bus sharing |
Applications
| Smart Card Readers | Cell Phone Cradles |
|---|---|
Use Scenario: Interfacing 1.8 V smart card controller with 3.3 V host MCU or USB bridge IC. IC Role / Device Role / Timing Role: Bidirectional level shifter for ISO/IEC 7816-3 compliant serial communication (T=0/T=1 protocols). Use Value: Eliminates need for discrete MOSFET translators or direction-controlled buffers, reducing BOM count and PCB area. |
Use Scenario: Connecting 1.2 V mobile SoC GPIOs to 5 V USB PHY or charging controller in docking station. IC Role / Device Role / Timing Role: Voltage-domain bridge for UART, I²C, and sideband signaling between baseband and peripheral ICs. Use Value: Enables direct logic-level compatibility without external pull-ups or level-shifting resistors, improving signal integrity at 50 Mbps. |
| Network Routers | Portable POS Terminals |
Use Scenario: Translating control signals between 1.8 V switch fabric ASIC and 3.3 V management microcontroller. IC Role / Device Role / Timing Role: Low-skew, multi-channel translator for configuration, status, and interrupt lines in packet-forwarding subsystems. Use Value: Guarantees sub-10 ns propagation matching across 8 channels, preventing metastability in synchronous register reads. |
Use Scenario: Bridging 1.15 V NFC controller outputs to 3.3 V thermal printer interface and secure element inputs. IC Role / Device Role / Timing Role: Power-aware bidirectional translator enabling wake-on-NFC while minimizing standby current draw. Use Value: Delivers <1 μA quiescent current in three-state mode, extending single-charge battery runtime beyond 72 hours. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional level translation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TXS0108E | 8-channel, VCCA = 1.2–3.6 V, VCCB = 1.65–5.5 V; direction pin required; 60 Mbps max data rate | Requires external direction control logic; better suited for asymmetric bus protocols where direction is known in advance | Select TXS0108E when deterministic direction control is preferred and board space allows for direction signal routing |
| SN74AVC8T245 | 8-bit dual-supply transceiver with direction pin; VCCA = 1.2–3.6 V, VCCB = 1.2–3.6 V; 300 Mbps max data rate | Limited to ≤3.6 V on both sides; no support for 5 V Y-side; requires direction pin and external pull-up/pull-down | Choose SN74AVC8T245 only for high-speed (≥100 Mbps), symmetric 1.8 V/3.3 V applications where 5 V tolerance is unnecessary |
Compared with TXS0108E and SN74AVC8T245, ADG3308BRUZ uniquely eliminates direction-pin overhead and supports true 1.15 V–5.5 V translation ranges, making it optimal for compact, low-power, and dynamically bidirectional interfaces like smart card and NFC subsystems.
Availability
ADG3308BRUZ is available at Aetrix Electronics and suitable for smart card readers, cell phone cradles, and network routers requiring stable component supply, long-term industrial temperature support (−40°C to +85°C), and guaranteed multivoltage interoperability.
Supply support for ADG3308BRUZ 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
Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving precision instrumentation, communications, and industrial markets since 1965.
The ADG3308BRUZ belongs to Analog Devices' level translation product line, engineered specifically for low-voltage, low-power, and pin-efficient interfacing between heterogeneous voltage domains in portable and embedded systems.
FAQ
What voltage combinations does ADG3308BRUZ support?
ADG3308BRUZ supports any combination where VCCA is 1.15 V to 5.5 V and VCCY is 1.65 V to 5.5 V, with VCCA strictly less than VCCY. Valid examples include 1.2 V ↔ 1.8 V, 1.8 V ↔ 3.3 V, and 3.3 V ↔ 5 V. The device guarantees timing and logic thresholds across these ranges per Table 1 in the Rev. E datasheet.
Does ADG3308BRUZ require a direction control signal?
No, ADG3308BRUZ does not require a direction pin. Its internal one-shot accelerator architecture detects signal edges on either A or Y side and automatically configures the translation path. This eliminates external control logic and reduces PCB routing complexity compared to direction-pin-based alternatives like TXS0108E.
What is the maximum data rate supported by ADG3308BRUZ?
ADG3308BRUZ guarantees 50 Mbps in both A→Y and Y→A directions under specified test conditions: RS = RT = 50 Ω, CL = 50 pF (A→Y) or CL = 15 pF (Y→A), and supply pairs such as 1.8 V/3.3 V or 3.3 V/5 V. Performance degrades to 25 Mbps at 1.15 V/1.8 V due to slower switching.
How does the enable (EN) pin function on ADG3308BRUZ?
The EN pin on ADG3308BRUZ is active-high and referenced to VCCY. When pulled low, it places all A1–A8 and Y1–Y8 pins into high-impedance state, reducing ICCA and ICCY to ≤1 μA. During normal operation, EN must be driven to VCCY to enable bidirectional translation without added latency or signal distortion.
Is ADG3308BRUZ compatible with I²C bus translation?
Yes, ADG3308BRUZ supports I²C translation in standard-mode (100 kHz) and fast-mode (400 kHz) applications. Its bidirectional auto-sensing, low capacitance (CA = 10 pF, CY = 6.8 pF), and rail-to-rail output swing meet I²C electrical requirements when used with appropriate pull-up resistors on each side, as confirmed in Analog Devices Application Note AN-1326.
ADG3308BRUZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- Packaging:
- Tube
- Product Status:
- Active
- Translator Type:
- Voltage Level
- Channel Type:
- Bidirectional
- Number of Circuits:
- 1
- Channels per Circuit:
- 8
- Voltage - VCCA:
- 1.15 V ~ 5.5 V
- Voltage - VCCB:
- 1.65 V ~ 5.5 V
- Input Signal:
- -
- Output Signal:
- -
- Output Type:
- Tri-State, Non-Inverted
- Data Rate:
- 50Mbps
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Features:
- Auto-Direction Sensing
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TSSOP (0.173", 4.40mm Width)
ADG3308BRUZ FAQ
1.How can I place an order for ADG3308BRUZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ADG3308BRUZ 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 ADG3308BRUZ reliable?
The price and inventory of ADG3308BRUZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADG3308BRUZ is usually 5 days.
3.What payment methods are accepted for ADG3308BRUZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADG3308BRUZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADG3308BRUZ?
ADG3308BRUZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADG3308BRUZ 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 ADG3308BRUZ?
For technical support, including ADG3308BRUZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADG3308BRUZ requirements.
6.How does Aetrix verify that ADG3308BRUZ is sourced from the original manufacturer or authorized distributors?
All ADG3308BRUZ 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 ADG3308BRUZ meets industry standards.
7.What is the process for return or replacement of ADG3308BRUZ?
All ADG3308BRUZ units undergo pre-shipment inspection (PSI). If there is an issue with ADG3308BRUZ, 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 ADG3308BRUZ part is unused and in its original packaging.
Return procedure for ADG3308BRUZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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