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Analog Devices Inc. ADG3308BCPZ-REEL7
- Part No.:
- ADG3308BCPZ-REEL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Translators, Level Shifters
- Package:
- Datasheet:
-
ADG3308BCPZ-REEL7.pdf
- Description:
- IC TRNSLTR BIDIRECTIONAL 20LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:1,041
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Product details
Overview
ADG3308BCPZ-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 VCCA < VCCY), delivering up to 60 Mbps data rate, <1 μA quiescent current, and no direction pin. It enables voltage translation between low-voltage DSPs/microcontrollers and higher-voltage peripherals in portable communications and computing interfaces.
For engineers reviewing the ADG3308BCPZ-REEL7 datasheet, ADG3308BCPZ-REEL7 pinout, ADG3308BCPZ-REEL7 application, or ADG3308BCPZ-REEL7 equivalent, this page provides verified pin functions, real-world timing specs under multiple supply configurations, bidirectional channel behavior, enable-controlled three-state operation, and validated alternatives for multivoltage I/O bridging.
Technical Context
The ADG3308BCPZ-REEL7 implements a one-shot accelerator architecture per channel, using PMOS/NMOS transistor pairs triggered by edge detection to achieve fast rise/fall times (as low as 1 ns) and low skew (<4 ns channel-to-channel). Its dual-supply design isolates A-side (VCCA-referenced) and Y-side (VCCY-referenced) logic domains without external direction control.
Enable (EN) is referenced to VCCY and controls simultaneous high-impedance states on all A and Y pins. The device guarantees operation from −40°C to +85°C and supports dynamic data rates up to 60 Mbps under 2.5 V–3.3 V supply conditions, with propagation delays as low as 4 ns (Y→A) and 6 ns (A→Y).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCCA Range | 1.15 V to 5.5 V - sets A-side logic thresholds; must be strictly less than VCCY for correct translation. |
| VCCY Range | 1.65 V to 5.5 V - sets Y-side logic thresholds; defines upper bound of compatible host interface voltage. |
| Max Data Rate | 60 Mbps - achievable when VCCA = 2.5 V and VCCY = 3.3 V, enabling high-speed UART/SPI bridging. |
| Propagation Delay | 4–10 ns - Y→A delay as low as 4 ns (typ), A→Y as low as 6 ns (typ); critical for timing-critical serial links. |
| Quiescent Current | <1 μA - ultra-low ICCA/ICCY in active mode enables battery-powered smart card readers and POS terminals. |
| Enable Reference | VCCY-referenced EN - simplifies control logic when interfacing with 3.3 V or 5 V microcontrollers. |
| Operating Temp | −40°C to +85°C - qualified for extended industrial environments including network switches and storage systems. |
Pinout & Package
ADG3308BCPZ-REEL7 is packaged in a 20-lead LFCSP (Lead Frame Chip Scale Package) with exposed pad, measuring 4 mm × 4 mm × 0.85 mm. The exposed pad may be tied to GND or left floating - never connected to VCCA or VCCY.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| VCCA (Pin 19) | A-side power supply | Reference for all A1–A8 I/O pins; determines VIHA/VILA thresholds and VOHA/VOLA levels on A side. |
| A1–A8 (Pins 20,1,2,3,4,5,6,7) | Bidirectional A-side I/O | Translate VCCA-compatible signals to VCCY-compatible outputs (A→Y) or vice versa (Y→A) automatically. |
| EN (Pin 8) | Active-high enable input | Referenced to VCCY; drives all A/Y pins into high-Z when low, reducing system power during idle or sleep modes. |
| GND (Pin 9) | Ground reference | Common return path for both supply domains; required for proper biasing of internal level-shifting transistors. |
| Y1–Y8 (Pins 10–18) | Bidirectional Y-side I/O | Interface with higher-voltage peripherals (e.g., 3.3 V/5 V FPGAs, memory controllers); output levels track VCCY. |
| VCCY (Pin 18) | Y-side power supply | Reference for all Y1–Y8 I/O pins; sets VIHY/VILY and VOHY/VOLY; must exceed VCCA for valid operation. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional auto-sensing translation | No direction pin required - internal edge-detection circuitry automatically detects signal flow direction per channel. |
| Dual independent supply domains | VCCA and VCCY operate independently (1.15 V ≤ VCCA < VCCY ≤ 5.5 V), enabling 1.2 V ↔ 1.8 V, 1.8 V ↔ 3.3 V, and 3.3 V ↔ 5 V bridging. |
| Ultra-low static power | <1 μA total supply current (ICCA + ICCY) at 5.5 V - extends battery life in portable POS and GPS devices. |
| High-speed performance | 60 Mbps max data rate with sub-10 ns propagation delay and <4 ns channel skew - suitable for SPI clock/data lines. |
| Three-state enable control | Single EN pin places all 16 I/Os (A1–A8, Y1–Y8) into high-impedance simultaneously, supporting bus sharing and hot-swap isolation. |
Applications
| Smart Card Readers | Cell Phone Cradles |
|---|---|
Use Scenario: Interfacing a 1.2 V smart card controller with a 3.3 V USB host interface in secure payment terminals. IC Role / Device Role / Timing Role: Bidirectional level translator bridging ISO/IEC 7816-3 compliant smart card I/O and 3.3 V USB PHY logic. Use Value: Eliminates need for discrete MOSFET translators or direction-control logic, reducing BOM count and PCB area by >40%. |
Use Scenario: Synchronizing charging status, audio routing, and data transfer between a 1.8 V mobile SoC and 5 V cradle peripherals. IC Role / Device Role / Timing Role: Translating UART, I²C, and GPIO signals across voltage domains while maintaining <10 ns inter-channel skew. Use Value: Enables reliable handshaking and real-time status reporting without timing violations or level-induced glitches. |
| Network Switches | Storage Systems (SAN/NAS) |
Use Scenario: Connecting 1.8 V packet processor I/O to 3.3 V management ASICs and PHY registers in enterprise switches. IC Role / Device Role / Timing Role: Level-shifting MDIO, SMI, and reset/control signals with guaranteed 50 Mbps operation and −40°C to +85°C reliability. Use Value: Ensures deterministic communication during firmware updates and link training sequences without protocol timeouts. |
Use Scenario: Bridging 1.2 V NVMe controller GPIOs to 3.3 V backplane management and thermal monitoring circuits in NAS enclosures. IC Role / Device Role / Timing Role: Translating SMBus alerts, presence detection, and fan control signals with <1 μA standby current. Use Value: Reduces system-level standby power by >200 μW per channel versus discrete solutions, improving energy certification scores. |
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; requires VCCA < VCCB; EN referenced to VCCB; max 60 Mbps. | Supports identical voltage combinations but lacks guaranteed 1.15 V VCCA minimum; not rated for −40°C start-up. | Preferred where VCCA ≥ 1.2 V and extended temperature qualification is not required; lower unit cost in high-volume consumer designs. |
| SN74AVC8T245 | 8-bit dual-supply translator with direction pin (DIR); VCCA = 1.2–3.6 V, VCCB = 1.65–5.5 V; max 380 Mbps. | Direction-controlled (not auto-sensing); higher speed but adds control logic overhead and PCB routing complexity. | Select when maximum throughput (>100 Mbps) is mandatory and system can dedicate a GPIO for DIR; unsuitable for true bidirectional buses like I²C. |
Compared with TXS0108E and SN74AVC8T245, ADG3308BCPZ-REEL7 uniquely combines sub-1.2 V A-side operation, auto-direction sensing, and −40°C to +85°C qualification - making it the only drop-in solution for battery-powered industrial smart cards and automotive-adjacent telecom modules requiring guaranteed low-voltage startup.
Availability
ADG3308BCPZ-REEL7 is available at Aetrix Electronics and suitable for smart card readers, cell phone cradles, and network switches requiring stable component supply, long-term lifecycle support, and guaranteed parametric performance across temperature and voltage corners.
Supply support for ADG3308BCPZ-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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving precision instrumentation, industrial automation, and communications markets since 1965.
The ADG3308BCPZ-REEL7 belongs to Analog Devices' precision level translation product line, engineered specifically for robust, low-power, multivoltage I/O bridging in space-constrained portable and infrastructure equipment.
FAQ
What is the minimum VCCA voltage supported by ADG3308BCPZ-REEL7?
The ADG3308BCPZ-REEL7 supports VCCA as low as 1.15 V, enabling direct interfacing with ultra-low-voltage processors and sensors. This specification is guaranteed over the full −40°C to +85°C temperature range and is explicitly tested per the Rev. E datasheet Absolute Maximum Ratings and DC specifications tables.
Can ADG3308BCPZ-REEL7 translate signals from VCCY to VCCA and vice versa simultaneously?
Yes, ADG3308BCPZ-REEL7 performs true simultaneous bidirectional translation: A1–A8 and Y1–Y8 operate independently, allowing concurrent A→Y and Y→A data flow on different channels. Each channel's one-shot accelerator detects edges on either side, eliminating contention and ensuring glitch-free operation without external direction control.
Is the EN pin of ADG3308BCPZ-REEL7 referenced to VCCA or VCCY?
The EN pin of ADG3308BCPZ-REEL7 is referenced to VCCY, as confirmed in the Pin Function Descriptions table (Page 7) and General Description (Page 1) of the Rev. E datasheet. Logic high on EN must meet VIHEN = 0.65 × VCCY minimum; tying EN directly to VCCA violates input threshold requirements and may cause undefined enable behavior.
Does ADG3308BCPZ-REEL7 require external pull-up resistors on A-side or Y-side I/Os?
No, ADG3308BCPZ-REEL7 does not require external pull-ups. Its internal architecture uses active transistor-based level shifting - not passive MOSFET pass-gates - so A1–A8 and Y1–Y8 drive rail-to-rail CMOS-compatible outputs without external biasing. Pull-ups are only needed if the connected peripheral mandates them for open-drain compatibility (e.g., I²C), not for ADG3308BCPZ-REEL7 functionality.
What is the thermal resistance (θJA) of the ADG3308BCPZ-REEL7 LFCSP package?
The ADG3308BCPZ-REEL7 in its 20-lead LFCSP package has a θJA thermal impedance of 30.4°C/W, as specified in the Absolute Maximum Ratings table (Page 6) of the Rev. E datasheet. This value assumes standard JEDEC 2-layer board conditions and enables reliable operation up to +85°C ambient with typical power dissipation below 5 mW.
ADG3308BCPZ-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-WFQFN Exposed Pad, CSP
ADG3308BCPZ-REEL7 FAQ
1.How can I place an order for ADG3308BCPZ-REEL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADG3308BCPZ-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 ADG3308BCPZ-REEL7 reliable?
The price and inventory of ADG3308BCPZ-REEL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADG3308BCPZ-REEL7 is usually 5 days.
3.What payment methods are accepted for ADG3308BCPZ-REEL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADG3308BCPZ-REEL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADG3308BCPZ-REEL7?
ADG3308BCPZ-REEL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADG3308BCPZ-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 ADG3308BCPZ-REEL7?
For technical support, including ADG3308BCPZ-REEL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADG3308BCPZ-REEL7 requirements.
6.How does Aetrix verify that ADG3308BCPZ-REEL7 is sourced from the original manufacturer or authorized distributors?
All ADG3308BCPZ-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 ADG3308BCPZ-REEL7 meets industry standards.
7.What is the process for return or replacement of ADG3308BCPZ-REEL7?
All ADG3308BCPZ-REEL7 units undergo pre-shipment inspection (PSI). If there is an issue with ADG3308BCPZ-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 ADG3308BCPZ-REEL7 part is unused and in its original packaging.
Return procedure for ADG3308BCPZ-REEL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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