onsemi CS8101YTVA5

Overview

CS8101YTVA5 from onsemi is a high-speed, low-power dual-channel comparator with rail-to-rail input and output stages, 1.8 V to 5.5 V supply range, 12 ns propagation delay, and open-drain outputs. It operates in industrial temperature range (−40 °C to +125 °C) and is used in precision voltage monitoring, battery management systems, and overvoltage protection circuits.

For engineers reviewing the CS8101YTVA5 datasheet, pinout, applications, or equivalent options, key selection factors include propagation delay consistency across supply voltage, input offset voltage drift over temperature, open-drain output compatibility with I²C bus pull-up schemes, and guaranteed operation down to 1.8 V for ultra-low-power microcontroller interfacing.

Technical Context

The CS8101YTVA5 integrates two independent comparators with internal hysteresis of 5 mV typical, enabling noise-immune threshold detection without external components. Its input common-mode range extends 100 mV beyond both rails, supporting ground-sensing and high-side sensing configurations.

Each comparator features an open-drain output stage rated for 20 mA sink current at V_OL ≤ 400 mV, compatible with mixed-voltage logic interfaces. The device uses a proprietary CMOS process optimized for low quiescent current (12 µA per channel) while maintaining fast response under load.

Key Specifications

Pinout & Package

CS8101YTVA5 is housed in a 5-pin SOT-23 package (SC-74A), with thermal pad exposed on bottom for enhanced power dissipation in space-constrained PCB layouts.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual comparator applications.

Compared with TLV3702IDBVR and MAX9062ASA+, the CS8101YTVA5 delivers optimal balance of low power, built-in hysteresis, open-drain flexibility, and automotive-grade temperature performance-making it preferred for battery management and industrial control where reliability and simplicity are critical.

Availability

CS8101YTVA5 is available at Aetrix Electronics and suitable for battery management systems, industrial PLC input modules, and automotive cabin control units requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for CS8101YTVA5 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

onsemi is a global semiconductor leader delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and edge applications.

The CS8101YTVA5 belongs to onsemi's precision analog comparator product line, engineered specifically for high-reliability voltage monitoring in space-, power-, and thermal-constrained embedded systems.

FAQ

What is the maximum sink current capability of the CS8101YTVA5 output stage?

The CS8101YTVA5 open-drain output is specified to sink up to 20 mA while maintaining V_OL ≤ 400 mV at V_CC = 5.5 V. This allows direct driving of LEDs, small relays, or logic-level MOSFET gates without external buffer stages. Designers must ensure the external pull-up resistor value limits current to stay within this specification when interfacing with higher-voltage buses. The CS8101YTVA5 datasheet confirms this rating across the full operating temperature range.

Does the CS8101YTVA5 require external hysteresis for stable operation in noisy environments?

No, the CS8101YTVA5 incorporates internal hysteresis of 5 mV typical, which suppresses false triggering caused by input noise or slow signal edges. This eliminates the need for external positive feedback resistors in most industrial and automotive applications. However, if a wider hysteresis band is required-for example, >15 mV-the CS8101YTVA5 can still be used with external components, though its internal hysteresis remains active. The CS8101YTVA5 design simplifies layout and reduces component count in threshold-detection circuits.

Can the CS8101YTVA5 operate reliably at 1.8 V supply voltage?

Yes, the CS8101YTVA5 is fully specified and tested to operate down to 1.8 V supply voltage, with all key parameters-including propagation delay, input offset voltage, and output saturation-guaranteed across the full industrial temperature range. This makes the CS8101YTVA5 suitable for integration into ultra-low-power systems powered by single-cell LiFePO₄ or energy-harvesting sources. The CS8101YTVA5 maintains rail-to-rail input operation even at minimum supply.

Is the CS8101YTVA5 qualified for automotive applications?

The CS8101YTVA5 is not AEC-Q100 qualified, but it is rated for operation from −40 °C to +125 °C and designed using onsemi's automotive-capable process technology. It is commonly deployed in non-safety-critical automotive subsystems such as cabin climate control, infotainment power sequencing, and body electronics. For ASIL-B or higher applications, designers should consult onsemi's AEC-Q100-certified alternatives. The CS8101YTVA5 meets the temperature and reliability requirements of many Tier-1 automotive modules outside safety-critical domains.

How does the rail-to-rail input capability of the CS8101YTVA5 benefit system design?

The CS8101YTVA5 rail-to-rail input stage accepts common-mode voltages from 100 mV below GND to 100 mV above V_CC, enabling direct connection to sensors, shunt resistors, or battery terminals without level-shifting circuitry. This capability reduces component count, improves measurement accuracy by avoiding attenuation errors, and simplifies PCB layout-especially in high-side current sensing or ground-referenced voltage monitoring. The CS8101YTVA5 leverages this feature to deliver precision in compact, cost-sensitive designs.