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Analog Devices Inc. ADG3308BRUZ-REEL7
- Part No.:
- ADG3308BRUZ-REEL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Translators, Level Shifters
- Package:
- Datasheet:
-
ADG3308BRUZ-REEL7.pdf
- Description:
- IC TRNSLTR BIDIRECTIONAL 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,153
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Product details
Overview
ADG3308BRUZ-REEL7 from Analog Devices is an 8-channel bidirectional logic level translator IC operating across dual supplies (VCCA = 1.15 V to 5.5 V, VCCY = 1.65 V to 5.5 V), with no direction pin, <1 μA quiescent current, and guaranteed operation from −40°C to +85°C. It enables voltage translation between low-voltage DSPs/microcontrollers and higher-voltage peripherals in portable and multivoltage digital systems.
For engineers reviewing the ADG3308BRUZ-REEL7 datasheet, ADG3308BRUZ-REEL7 pinout, ADG3308BRUZ-REEL7 application, or ADG3308BRUZ-REEL7 equivalent, key selection criteria include bidirectional A↔Y channel operation, VCCA < VCCY supply constraint, enable-controlled three-state capability, and data rate support up to 60 Mbps under 2.5 V–3.3 V conditions.
Technical Context
The ADG3308BRUZ-REEL7 implements a one-shot accelerator architecture per channel, using PMOS/NMOS transistor pairs triggered by edge detection to achieve fast rise/fall times. Translation occurs without external direction control: signals applied to A-side pins (referenced to VCCA) appear at Y-side pins (referenced to VCCY) at corresponding logic levels, and vice versa.
Enable (EN) is referenced to VCCY for this TSSOP variant and places both A and Y I/Os into high-impedance state when low. The device requires VCCA < VCCY for correct operation and supports asymmetric voltage translation such as 1.2 V ↔ 1.8 V, 1.8 V ↔ 3.3 V, and 3.3 V ↔ 5 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCCA Range | 1.15 V to 5.5 V - sets logic thresholds on A-side I/Os; must be strictly less than VCCY. |
| VCCY Range | 1.65 V to 5.5 V - sets logic thresholds on Y-side I/Os; defines upper bound of supported translation pairs. |
| Max Data Rate | 60 Mbps - achievable only under 2.5 V ≤ VCCA ≤ VCCY = 3.3 V with CL = 50 pF (A→Y) or CL = 15 pF (Y→A). |
| Propagation Delay | 4–10 ns - varies with supply pair and direction; e.g., tP,Y→A = 4–7 ns at 1.8 V/3.3 V, tP,A→Y = 6–10 ns at same conditions. |
| Quiescent Current | <1 μA total - ICCA + ICCY ≤ 2 μA at 5.5 V supplies and EN = VCCY, enabling ultra-low-power standby. |
| Channel Count | 8 independent bidirectional channels - supports parallel data bus translation (e.g., I²C, SPI, GPIO banks) without external direction logic. |
| Operating Temp | −40°C to +85°C - qualified for extended industrial environments; no derating required within range. |
Pinout & Package
ADG3308BRUZ-REEL7 is packaged in a 20-lead TSSOP (RU-20) with exposed thermal pad. Pin 1 is Y8; pin 11 is GND; pin 10 is EN (VCCY-referenced); pins 2–9 are A1–A8; pins 12–19 are Y8–Y1; pin 20 is VCCY; pin 19 is VCCA.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Y8 | Bi-directional I/O referenced to VCCY; translates logic levels between A8 and Y8. |
| 2–9 | A1–A8 | Bi-directional I/Os referenced to VCCA; connect to low-voltage domain (e.g., 1.2 V/1.8 V controller). |
| 10 | EN | Active-high enable referenced to VCCY; drives all A/Y pins to high-Z when low. |
| 11 | GND | Common ground reference for both domains; must be connected to system ground plane. |
| 12–19 | Y7–Y1 | Bi-directional I/Os referenced to VCCY; connect to higher-voltage domain (e.g., 3.3 V/5 V peripheral). |
| 20 | VCCY | Power supply for Y-side logic; sets high/low thresholds for Y1–Y8 and EN input. |
| 19 | VCCA | Power supply for A-side logic; sets high/low thresholds for A1–A8; must be < VCCY. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional translation per channel | Eliminates need for external direction control logic or multiplexing circuitry in full-duplex interfaces. |
| No direction pin | Reduces PCB routing complexity and eliminates risk of direction-control timing violations in high-speed buses. |
| VCCA-referenced A-side / VCCY-referenced Y-side | Enables seamless integration between disparate voltage domains without level-shifting buffers on either side. |
| Enable-controlled three-state mode | Allows dynamic isolation of both sides during power sequencing, sleep modes, or bus arbitration without external switches. |
| One-shot accelerator architecture | Delivers sub-10 ns propagation delay and <5 ns rise/fall times even at 1.2 V→1.8 V transitions with 50 pF load. |
Applications
| Smart Card Readers | Cell Phone Cradles |
|---|---|
Use Scenario: Interface between 1.8 V smart card controller and 3.3 V host interface IC in secure payment terminals. IC Role / Device Role / Timing Role: Bidirectional level translator for ISO/IEC 7816-3 compliant serial communication lines (CLOCK, I/O, RST). Use Value: Maintains signal integrity at up to 5 MHz clock rates while eliminating external direction logic and reducing BOM count by one IC. | Use Scenario: Bridge between 1.2 V mobile SoC and 5 V USB-UART or charging controller in docking station base. IC Role / Device Role / Timing Role: Voltage translator for UART TX/RX, D+/D−, and accessory detection lines with simultaneous A↔Y data flow. Use Value: Supports hot-plug detection and bidirectional USB enumeration without voltage conflict or level mismatch errors. |
| Network Routers | Industrial GPS Modules |
Use Scenario: Translate control signals between 1.8 V FPGA management core and 3.3 V PHY/MAC interface in compact edge routers. IC Role / Device Role / Timing Role: Level shifter for MDIO, MDC, and GPIO status lines requiring deterministic timing and low skew. Use Value: Achieves <4 ns channel-to-channel skew and <3 ns part-to-part skew, ensuring synchronous register access across multi-PHY designs. | Use Scenario: Connect 1.2 V GNSS baseband processor to 3.3 V RF front-end and SDIO-based memory in ruggedized vehicle navigation units. IC Role / Device Role / Timing Role: Bidirectional translator for SDIO CMD/DATA lines and GPS PPS timing output. Use Value: Enables direct SDIO 1-bit mode operation at 25 Mbps with guaranteed setup/hold margins despite 1.2 V/3.3 V domain crossing. |
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, auto-direction sensing, VCCA = 1.2–3.6 V, VCCB = 1.65–5.5 V; no EN pin; higher ICC in active mode (≈15 μA typical). | Lacks enable control; unsuitable where dynamic bus isolation is required (e.g., hot-swap, power-gated subsystems). | Select TXS0108E only if direction-sensing operation is preferred and three-state control is unnecessary. |
| SN74AVC8T245 | 8-bit dual-supply translator with direction pin (DIR); VCCA = 1.2–3.6 V, VCCB = 1.65–3.6 V; supports 32 mA drive strength. | Requires external DIR control signal; not truly bidirectional per channel; higher drive capability but larger package (24-TSSOP). | Choose SN74AVC8T245 only when high-current driving (>8 mA) or strict unidirectional control is needed. |
Compared with TXS0108E and SN74AVC8T245, ADG3308BRUZ-REEL7 uniquely combines true per-channel bidirectionality, VCCY-referenced enable, and sub-1 μA quiescent current-making it optimal for battery-powered, space-constrained, and dynamically isolated multivoltage systems.
Availability
ADG3308BRUZ-REEL7 is available at Aetrix Electronics and suitable for smart card readers, cell phone cradles, and network routers requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for ADG3308BRUZ-REEL7 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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA.
The ADG3308 product line was designed specifically for low-voltage, low-power, bidirectional logic level translation in portable, telecom, and computing applications where supply voltage scaling and power efficiency are critical.
FAQ
What is the maximum allowable voltage difference between VCCA and VCCY for reliable operation of ADG3308BRUZ-REEL7?
The ADG3308BRUZ-REEL7 requires VCCA < VCCY, with absolute maximum ratings specifying VCCY ≤ VCCA + 7 V. However, functional operation is guaranteed only when VCCA ≤ VCCY and both supplies fall within their respective ranges: VCCA = 1.15 V to 5.5 V and VCCY = 1.65 V to 5.5 V. For example, 1.2 V → 3.3 V and 1.8 V → 5 V are valid, but 3.3 V → 1.8 V violates the VCCA < VCCY requirement and will not operate correctly. ADG3308BRUZ-REEL7 must never be operated with VCCA ≥ VCCY.
Can ADG3308BRUZ-REEL7 translate signals between 1.2 V and 5 V domains?
Yes, ADG3308BRUZ-REEL7 supports 1.2 V ↔ 5 V translation: set VCCA = 1.2 V and VCCY = 5 V. The device guarantees operation across this pair, with measured DMAX,Y→A = 25 Mbps and tP,Y→A = 14–35 ns under CL = 15 pF. Input thresholds scale proportionally (VIHA = 0.65 × VCCA = 0.78 V; VIHY = 0.65 × VCCY = 3.25 V), ensuring noise margin compliance. ADG3308BRUZ-REEL7 maintains bidirectional functionality without external components in this configuration.
Does ADG3308BRUZ-REEL7 require external pull-up resistors on A-side or Y-side I/Os?
No, ADG3308BRUZ-REEL7 does not require external pull-up resistors for basic level translation functionality. Its internal architecture provides rail-to-rail output drive capability compatible with CMOS loads. However, pull-ups may be needed for open-drain bus protocols (e.g., I²C) - in which case they must be placed on the Y-side (VCCY domain) only, as the A-side outputs cannot source current when VCCA < VCCY. ADG3308BRUZ-REEL7's VOHA and VOHY specifications confirm active push-pull behavior, not open-drain.
How does the enable (EN) pin behave during power-up sequencing of ADG3308BRUZ-REEL7?
The EN pin of ADG3308BRUZ-REEL7 is referenced to VCCY and must be held low until both VCCA and VCCY are stable and within specification. If EN rises before VCCY is fully regulated, undefined output states or increased leakage may occur. Recommended practice is to tie EN to VCCY through a RC delay network or use a supervisor IC to assert EN only after VCCY reaches 90% of nominal. ADG3308BRUZ-REEL7 enters three-state mode when EN = 0, preventing bus contention during power ramp-up - a key feature for robust system initialization.
Is ADG3308BRUZ-REEL7 compatible with I²C bus operation including clock stretching and multi-master arbitration?
Yes, ADG3308BRUZ-REEL7 supports standard-mode (100 kbps) and fast-mode (400 kbps) I²C operation, including clock stretching and multi-master arbitration, provided VCCA and VCCY are set to appropriate levels (e.g., VCCA = 1.8 V for microcontroller, VCCY = 3.3 V for EEPROM). Its bidirectional, passive-follower behavior on both sides preserves bus electrical characteristics. However, because it lacks built-in slew-rate control, external 1–10 kΩ pull-ups on the Y-side are recommended to meet I²C rise-time requirements. ADG3308BRUZ-REEL7 does not interfere with arbitration or stretching sequences.
ADG3308BRUZ-REEL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- Packaging:
- Tape & Reel (TR)
- 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-REEL7 FAQ
1.How can I place an order for ADG3308BRUZ-REEL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADG3308BRUZ-REEL7 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-REEL7 reliable?
The price and inventory of ADG3308BRUZ-REEL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADG3308BRUZ-REEL7 is usually 5 days.
3.What payment methods are accepted for ADG3308BRUZ-REEL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADG3308BRUZ-REEL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADG3308BRUZ-REEL7?
ADG3308BRUZ-REEL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADG3308BRUZ-REEL7 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-REEL7?
For technical support, including ADG3308BRUZ-REEL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADG3308BRUZ-REEL7 requirements.
6.How does Aetrix verify that ADG3308BRUZ-REEL7 is sourced from the original manufacturer or authorized distributors?
All ADG3308BRUZ-REEL7 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-REEL7 meets industry standards.
7.What is the process for return or replacement of ADG3308BRUZ-REEL7?
All ADG3308BRUZ-REEL7 units undergo pre-shipment inspection (PSI). If there is an issue with ADG3308BRUZ-REEL7, 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-REEL7 part is unused and in its original packaging.
Return procedure for ADG3308BRUZ-REEL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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