Analog Devices Inc. AD8468WBKSZ-RL

Overview

AD8468WBKSZ-RL from Analog Devices is a rail-to-rail, fast, low-power single-supply comparator operating from 2.5 V to 5.5 V with TTL/CMOS-compatible output, 40 ns propagation delay (typ), and shutdown pin-used in automotive threshold detection, high-speed line receivers, and clock signal restoration.

For engineers reviewing the AD8468WBKSZ-RL datasheet, AD8468WBKSZ-RL pinout, AD8468WBKSZ-RL application, or AD8468WBKSZ-RL equivalent, key selection criteria include input common-mode range (−0.2 V to VCC + 0.2 V), 15 pF load timing compliance, shutdown wake-up time (150 ns), and −40°C to +125°C automotive qualification.

Technical Context

The AD8468WBKSZ-RL uses Analog Devices' XFCB2.0 process for high-speed, low-noise comparison with robust input overdrive tolerance and no phase reversal beyond valid input range. Its input stage supports rail-to-rail operation across full supply range and features dual-front-end crossover points at ~0.8 V and ~1.6 V.

The TTL/CMOS-compatible output drives up to 15 pF with guaranteed timing specs and degrades linearly with added capacitance. Propagation delay dispersion is <12 ns over 10 mV–125 mV overdrive, critical for time-critical instrumentation and pulse-width modulation.

Key Specifications

Pinout & Package

AD8468WBKSZ-RL is housed in a 6-lead SC70 package (JEDEC MO-203-AB, KS-6), measuring 2.00 mm × 1.25 mm × 0.90 mm, optimized for space-constrained automotive and portable instrumentation PCBs.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-speed comparator applications.

Compared with LMH7220MK/NOPB and MAX961ESA+, AD8468WBKSZ-RL uniquely combines automotive temperature rating, integrated shutdown, and sub-40 ns delay in a 6-lead SC70 package-making it the only drop-in solution for space-constrained, safety-critical automotive comparators requiring fast, low-power threshold detection.

Availability

AD8468WBKSZ-RL is available at Aetrix Electronics and suitable for automotive ECU design, high-speed test equipment development, and industrial sensor interface modules requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for AD8468WBKSZ-RL 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, serving industrial, automotive, communications, and healthcare markets.

The AD8468 product line delivers precision, high-speed comparators optimized for automotive-grade reliability, rail-to-rail operation, and low-power shutdown-targeting next-generation ADAS sensors, battery management, and real-time control systems.

FAQ

What is the maximum input voltage range supported by the AD8468WBKSZ-RL?

The AD8468WBKSZ-RL supports an input common-mode voltage range from −0.2 V to VCC + 0.2 V across its full 2.5 V to 5.5 V supply range. This rail-to-rail capability allows direct interfacing with sensors, DACs, or other circuitry that may swing slightly beyond the supply rails-without external clamping or level-shifting circuitry. The absolute maximum input rating is −0.5 V to VCC + 0.5 V.

Does the AD8468WBKSZ-RL have true tristate output capability during shutdown?

No-the AD8468WBKSZ-RL places its Q output into a high-impedance state during shutdown, but this is not a true tristate output as defined for bus-driving applications. The shutdown feature disables internal circuitry and reduces supply current to 250–350 µA, with a wake-up time of 150 ns. However, Analog Devices cautions that the enable/disable timing is longer than with dedicated tristate buffers, so it should not be used where nanosecond-level output control is required.

Can the AD8468WBKSZ-RL drive more than 15 pF of capacitive load reliably?

The AD8468WBKSZ-RL's propagation delay and timing specifications are guaranteed only up to 15 pF. Driving larger loads degrades rise/fall times and increases propagation delay dispersion, though the output stage degrades gracefully rather than oscillating. For loads exceeding 15 pF-such as long PCB traces or multiple logic inputs-a dedicated buffer (e.g., SN74LVC1G07) is recommended to preserve timing integrity and signal fidelity in the AD8468WBKSZ-RL signal path.

Is the AD8468WBKSZ-RL pin-compatible with other SC70-packaged comparators?

The AD8468WBKSZ-RL uses a proprietary 6-lead SC70 pinout (Q, GND, VP, VN, SDN, VCC) and is not pin-compatible with generic SC70 comparators like the TLV3501 or MAX961. Substitution requires PCB layout revision due to differing pin assignments-especially the dedicated shutdown (SDN) pin at Pin 5 and noninverting output (Q) at Pin 1. Always verify pin mapping before replacement.

What is the typical power dissipation of the AD8468WBKSZ-RL at 3.3 V supply?

At VCC = 3.3 V and TA = 25°C, the AD8468WBKSZ-RL draws approximately 650 µA typical supply current, resulting in ~2.15 mW typical power dissipation (3.3 V × 650 µA). This remains well within its 7.15 mW maximum rating at 5.5 V and supports thermally constrained designs such as compact automotive modules or handheld test gear where low self-heating is critical.