Analog Devices Inc. ADG3241BKSZ-REEL

Overview

ADG3241BKSZ-REEL from Analog Devices is a 1-bit, bidirectional bus switch IC designed for level translation between mixed-voltage digital systems. It supports 2.5 V/3.3 V supply operation, delivers 225 ps propagation delay, 4.5 Ω on-resistance, and 1.5 Gbps data rate - enabling high-speed voltage translation in microcontroller-to-peripheral interfaces.

For engineers reviewing the ADG3241BKSZ-REEL datasheet, ADG3241BKSZ-REEL pinout, ADG3241BKSZ-REEL application, or ADG3241BKSZ-REEL equivalent, key selection considerations include its selectable 3.3 V→2.5 V / 3.3 V→1.8 V / 2.5 V→1.8 V level-shifting capability, SOT-66 package footprint, and hot-swap isolation behavior with high-impedance power-up/power-down state.

Technical Context

The ADG3241BKSZ-REEL implements a single NMOS pass-gate architecture controlled by active-low BE and level-select SEL pins. Its internal circuitry dynamically adjusts clamping thresholds based on SEL state: when SEL = VCC, it enables 3.3 V→2.5 V or 2.5 V→1.8 V translation; when SEL = 0 V, it enables 3.3 V→1.8 V translation.

It operates across 2.3 V to 3.6 V supply range with −40°C to +85°C industrial temperature rating. The device exhibits 770 MHz small-signal bandwidth, 45 ps p-p channel jitter at 1.5 Gbps, and <1 ns enable/disable times - confirming suitability for high-speed serial bus isolation and mixed-supply I/O bridging without timing skew.

Key Specifications

Pinout & Package

ADG3241BKSZ-REEL is housed in a 6-lead SOT-66 package (JEDEC RY-6-1), measuring 1.70 mm × 1.30 mm × 0.95 mm with gull-wing leads. Thermal impedance is 191°C/W on a 4-layer board.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar bus switch and level translation applications.

Compared with SN74AVC1T45DBVR and TXS0101DCKR, the ADG3241BKSZ-REEL uniquely combines 1.5 Gbps data rate, integrated SEL-controlled translation modes, and inherent hot-swap safety - making it the only option among the three qualified for high-speed, mixed-voltage bus isolation with zero external components.

Availability

ADG3241BKSZ-REEL is available at Aetrix Electronics and suitable for industrial automation interfaces, embedded data acquisition systems, and telecom line-card hot-swap modules requiring stable component supply and long-term lifecycle support.

Supply support for ADG3241BKSZ-REEL 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.

The ADG3241BKSZ-REEL belongs to Analog Devices' precision bus switch and level translation product line, engineered specifically for robust, low-latency interfacing between heterogeneous voltage-domain digital subsystems in industrial, communications, and test equipment.

FAQ

What voltage translation modes does the ADG3241BKSZ-REEL support?

The ADG3241BKSZ-REEL supports three translation modes: 3.3 V ↔ 2.5 V (SEL = VCC), 2.5 V ↔ 1.8 V (SEL = VCC), and 3.3 V ↔ 1.8 V (SEL = 0 V). These are implemented via internal NMOS clamping and do not require external components. The ADG3241BKSZ-REEL achieves this using a single SEL pin to reconfigure its internal threshold circuitry - verified in Table 4 and Figures 28–33 of the Rev. B datasheet.

Can the ADG3241BKSZ-REEL operate with a 2.3 V supply?

Yes, the ADG3241BKSZ-REEL is fully specified from 2.3 V to 3.6 V per Absolute Maximum Ratings (Table 2) and DC Electrical Characteristics (Table 1). At 2.3 V, it supports 2.5 V → 1.8 V translation with typical RON of 5 Ω and propagation delay within 300 ps. The ADG3241BKSZ-REEL maintains functional level shifting and switching integrity across this full range, confirmed in Figures 5, 7, and 8.

Is the ADG3241BKSZ-REEL pin-compatible with other packages in the ADG3241 family?

No - the ADG3241BKSZ-REEL uses the SOT-66 (RY-6-1) package, while ADG3241BKS-REEL uses SC70 (KS-6). Although both share identical pin functions and ordering logic (see Ordering Guide, Page 14), their footprints differ: SOT-66 measures 1.70 mm × 1.30 mm, SC70 is 2.00 mm × 1.25 mm. The ADG3241BKSZ-REEL requires dedicated layout; no mechanical interchangeability exists.

Does the ADG3241BKSZ-REEL require external pull-up resistors on BE or SEL?

BE must be pulled high via an external resistor (value determined by driver sink strength) to ensure high-impedance state during power-up/power-down - explicitly stated in the "High Impedance During Power-Up/Power-Down" section (Page 13). SEL may be tied directly to VCC or GND depending on desired translation mode; no pull-up/pull-down is required unless driven by an open-drain source. This behavior is integral to ADG3241BKSZ-REEL reliability in hot-plug systems.

What is the maximum data rate supported by the ADG3241BKSZ-REEL?

The ADG3241BKSZ-REEL supports up to 1.5 Gbps, measured under conditions of VCC = SEL = 3.3 V and VA/VB = 2 V swing (Table 1, Switching Characteristics). Eye diagram validation at 1.5 Gbps (Figure 22) and jitter characterization (Figure 20) confirm signal integrity compliance. The ADG3241BKSZ-REEL maintains >85% eye width at this rate, making it suitable for USB 2.0 and DDR1/DDR2 clock/data paths.