Texas Instruments TLV4021S5MYKAR

Overview

TLV4021S5MYKAR from Texas Instruments is a precision, low-power, non-inverting comparator with an internal 3.2 V fixed threshold and open-drain output, operating from 1.6 V to 5.5 V supply. It delivers 2 µA quiescent current, 2 µs propagation delay, 54 mV hysteresis, and operates across –40°C to +125°C - ideal for battery voltage monitoring in portable medical devices.

For engineers reviewing the TLV4021S5MYKAR datasheet, TLV4021S5MYKAR pinout, TLV4021S5MYKAR application, or TLV4021S5MYKAR equivalent, key selection criteria include its factory-trimmed 3.254 V (±17 mV) positive-going threshold, guaranteed hysteresis of 54 mV over temperature, open-drain output compatible with 5 V pull-up, and ultra-small 0.73 mm × 0.73 mm DSBGA package for space-constrained PCB layouts.

Technical Context

The TLV4021S5MYKAR integrates an internal resistor divider to scale the input signal relative to its internal reference, enabling direct detection of voltages up to 3.25 V without external components. Its rail-to-rail input stage supports operation down to 1.6 V supply while maintaining precise switching thresholds.

Unlike other TLV40x1 variants with 0.2 V/0.5 V/1.2 V references, the TLV4021S5MYKAR uses a dedicated 3.2 V threshold architecture with non-inverting input polarity and open-drain output - ensuring compatibility with microcontroller GPIO interrupt inputs requiring active-low assertion and external pull-up configuration.

Key Specifications

Pinout & Package

TLV4021S5MYKAR is packaged in a 4-bump, 0.73 mm × 0.73 mm DSBGA (YKA) package with bottom-side solder balls. This ultra-compact footprint minimizes PCB area and thermal resistance (R_θJB = 75.3°C/W), supporting high-density portable designs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV4041R5DBVR and TLV4021R1YKAR, the TLV4021S5MYKAR uniquely combines internal 3.2 V threshold, open-drain output, and 0.73 mm DSBGA - delivering lowest component count and smallest footprint for 3.3 V supply monitoring without sacrificing accuracy or noise immunity.

Availability

TLV4021S5MYKAR is available at Aetrix Electronics and suitable for battery management systems, portable medical devices, and industrial sensor nodes requiring stable component supply, long-term lifecycle support, and AEC-Q200-aligned reliability.

Supply support for TLV4021S5MYKAR 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

Texas Instruments is a global semiconductor leader specializing in analog and embedded processing technologies, with decades of expertise in precision signal conditioning and low-power design.

The TLV40x1 product line targets space- and power-constrained voltage monitoring applications - delivering factory-trimmed thresholds, integrated hysteresis, and ultra-small packages for battery-powered and automotive systems.

FAQ

What is the exact switching threshold voltage of TLV4021S5MYKAR and how does it vary with temperature?

The TLV4021S5MYKAR has a typical positive-going input threshold (V_IT+) of 3.254 V at 25°C, with min/max values of 3.221 V and 3.287 V across –40°C to +125°C. The negative-going threshold (V_IT–) is 3.200 V (typ), ranging from 3.168 V to 3.232 V over temperature. This 54 mV hysteresis is guaranteed and stable across the full operating range, as confirmed in Section 6.5 of the TI SNVSB04C datasheet.

Does TLV4021S5MYKAR require external components to monitor a 3.3 V supply rail?

No, TLV4021S5MYKAR does not require external resistors to monitor a 3.3 V rail. Its internal resistor divider scales the input to match the 3.2 V threshold, allowing direct connection of the supply to the IN pin. This eliminates BOM cost and layout area versus alternatives like TLV4021R1YKAR, which requires a 2.7:1 external divider for the same function.

What is the output behavior of TLV4021S5MYKAR during power-up?

TLV4021S5MYKAR features a Power-On Reset (POR) circuit that holds the open-drain output in high-impedance state until V+ reaches 1.45 V. This ensures a known startup condition and prevents false triggering during supply ramp-up. Once V+ ≥ 1.45 V, the output begins reflecting the IN pin state - a behavior verified in Figure 8-1 of the TI datasheet.

Can TLV4021S5MYKAR operate from a 1.8 V supply and still detect 3.3 V input?

Yes, TLV4021S5MYKAR supports supply voltages from 1.6 V to 5.5 V and accepts input voltages up to 5.5 V on the IN pin, independent of V+. When powered from 1.8 V, it correctly compares a 3.3 V input against its internal 3.2 V threshold and asserts the open-drain output low - confirmed by absolute maximum ratings (Section 6.1) and input voltage range specification (V_IN = V– to 5.5 V).

What package type and dimensions does TLV4021S5MYKAR use, and is it RoHS-compliant?

TLV4021S5MYKAR uses the YKA package: a 4-bump, 0.73 mm × 0.73 mm DSBGA with 0.35 mm ball pitch. It is RoHS-compliant and lead-free per TI's packaging standards (confirmed in TI's SNVSB04C datasheet, Section 13). The package is designed for automated assembly and offers low thermal resistance (R_θJB = 75.3°C/W) for thermally demanding applications.