Analog Devices Inc. ADG3304BCBZ-REEL7

Overview

ADG3304BCBZ-REEL7 from Analog Devices is a 4-channel bidirectional logic level translator enabling voltage-domain interoperability between 1.15 V and 5.5 V digital systems. It supports A→Y and Y→A translation without direction control, delivers ≤10 ns propagation delay (at 3.3 V/5 V), maintains <5 µA quiescent current, and operates across −40°C to +85°C for automotive-grade SPI/MICROWIRE interfacing in low-voltage ASICs and smart card readers.

For engineers reviewing the ADG3304BCBZ-REEL7 datasheet, ADG3304BCBZ-REEL7 pinout, ADG3304BCBZ-REEL7 application, or ADG3304BCBZ-REEL7 equivalent, this page provides verified package mapping (14-lead TSSOP), confirmed bidirectional timing specs (≤60 Mbps max data rate), EN-controlled three-state operation, and real-world interface constraints including VCCA < VCCY requirement and rail-referenced enable logic.

Technical Context

The ADG3304BCBZ-REEL7 implements a one-shot accelerator architecture per channel, using PMOS/NMOS transistor pairs triggered by edge detection to reduce rise/fall times. Its dual-supply design requires VCCA (1.15 V–VCCY) and VCCY (1.65 V–5.5 V), with strict VCCA < VCCY enforcement for correct level-shifting polarity.

Each of the four channels operates independently in either direction: A-side signals (referenced to VCCA) translate to Y-side levels (referenced to VCCY), and vice versa. The EN pin-referred to VCCA-asserts high-impedance on both sides when low, with enable time ≤1.8 µs and leakage <±1 µA in Hi-Z mode.

Key Specifications

Pinout & Package

ADG3304BCBZ-REEL7 is packaged in a 14-lead TSSOP (4.4 mm × 3 mm × 1.2 mm), RoHS-compliant, with exposed paddle (EPAD) that may be tied to GND or left floating-never connected to VCCA or VCCY.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar bidirectional level translation applications.

Compared with TXS0104E and SN74AVC4T245, ADG3304BCBZ-REEL7 uniquely eliminates direction control overhead and guarantees automotive operation, but mandates VCCA < VCCY and offers lower drive strength-making it optimal for low-power, space-constrained, and automotive SPI bridges where automatic bidirectionality is critical.

Availability

ADG3304BCBZ-REEL7 is available at Aetrix Electronics and suitable for SPI interface bridging, smart card reader design, low-voltage ASIC interfacing, cell phone cradle communication, and automotive telematics requiring stable component supply and long-term production continuity.

Supply support for ADG3304BCBZ-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, headquartered in Norwood, MA, with deep expertise in precision signal conditioning and interface solutions.

The ADG3304 product line was designed specifically for robust, low-power bidirectional logic level translation in multivoltage digital systems-including automotive infotainment, portable communications, and industrial IoT edge nodes-where pin count, power, and reliability are critical.

FAQ

What is the minimum valid VCCA voltage for ADG3304BCBZ-REEL7 operation?

The ADG3304BCBZ-REEL7 is fully specified down to VCCA = 1.15 V, with guaranteed performance including VIHA/VILA thresholds and propagation delay. At 1.15 V, maximum data rate drops to 25 Mbps (A↔Y) under 1.15 V→1.8 V translation, and quiescent current remains <5 µA. Operation below 1.15 V is not characterized or recommended.

Can ADG3304BCBZ-REEL7 translate signals when VCCA > VCCY?

No. The ADG3304BCBZ-REEL7 architecture requires VCCA ≤ VCCY for correct internal biasing and level translation functionality. If VCCA exceeds VCCY, the device fails to translate in either direction and may exhibit undefined output states or increased leakage. This constraint is enforced by design and explicitly stated in the Absolute Maximum Ratings table.

How does the EN pin behave when driven by a 1.2 V logic source?

The EN pin of ADG3304BCBZ-REEL7 is referenced to VCCA, so its logic thresholds scale with VCCA. When VCCA = 1.2 V, VIHEN(min) = VCCA × 0.88 = 1.056 V and VILEN(max) = VCCA × 0.35 = 0.42 V. A 1.2 V logic source meets VIHEN reliably, ensuring clean enable assertion without external level shifting.

Is ADG3304BCBZ-REEL7 compatible with I²C bus translation?

No. ADG3304BCBZ-REEL7 is not designed for open-drain I²C buses. Its push-pull outputs cannot emulate wired-AND behavior, and internal architecture lacks slew-rate control or bus-hold features required for I²C. For I²C, dedicated translators like the PCA9306 or TXS0108E are appropriate alternatives.

What thermal considerations apply to ADG3304BCBZ-REEL7 in a 4-layer PCB layout?

For the 14-lead TSSOP package of ADG3304BCBZ-REEL7, θJA is 89.21°C/W on a standard 4-layer JEDEC board. With max ICCA + ICCY ≈ 10 µA at 5.5 V, power dissipation is <60 µW-resulting in negligible temperature rise (<0.01°C). No thermal pad or copper pour is required, though tying the EPAD to GND improves EMI performance.