Texas Instruments TLC372MDREP

Overview

TLC372MDREP from Texas Instruments is a radiation-hardened dual differential comparator fabricated in CMOS technology, operating from single or dual supplies (4V–16V), delivering 420ns typical response time, 10μA typical supply current per channel, and input bias current as low as 5pA - deployed in space-grade power monitoring and fault-detection circuits within satellite power distribution units.

For engineers reviewing the TLC372MDREP datasheet, TLC372MDREP pinout, TLC372MDREP application, or TLC372MDREP equivalent, key selection considerations include its extended temperature range (–55°C to 125°C), open-drain output compatibility with TTL/MOS/CMOS logic families, ultra-low input bias current for high-impedance sensor interfacing, and pin-compatibility with LM393 in SOIC-8 packaging.

Technical Context

The TLC372MDREP integrates two independent CMOS-input comparators with rail-to-rail common-mode input voltage range (including ground), enabling direct sensing of low-side current shunts and battery voltage rails. Each channel features an n-channel open-drain output stage capable of sinking up to 16mA while supporting external pull-up voltages up to 16V - decoupling logic-level translation from supply voltage constraints.

Its internal ESD protection exceeds 2000V HBM and 100V machine model, and it maintains stable offset voltage (±5mV max) and propagation delay (420ns typ. at 100mV overdrive) across the full –55°C to 125°C military temperature range - critical for unattended operation in orbital environments.

Key Specifications

Pinout & Package

Package: SOIC-8 (D package), 3.9mm × 4.9mm body, 1.27mm pitch, RoHS-compliant NiPdAu lead finish, MSL Level-1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LM393DR and TLC372CP, the TLC372MDREP uniquely delivers space-grade temperature range, radiation-hardened process, and 2000V HBM ESD protection - making it the sole option for flight-critical comparator functions where parametric stability under extreme environmental stress is mandatory.

Availability

TLC372MDREP is available at Aetrix Electronics and suitable for satellite power management, downhole instrumentation, and defense electronics requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for TLC372MDREP 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 over 90 years of innovation in high-reliability components.

The TLC372-EP product line is engineered for aerospace, defense, and industrial applications demanding extended temperature operation, radiation tolerance, and long-term supply chain assurance - targeting mission-critical sensing and control functions.

FAQ

What is the maximum allowable supply voltage for the TLC372MDREP?

The absolute maximum supply voltage for the TLC372MDREP is 18V, though the recommended operating range is 4V to 16V. Exceeding 16V may compromise long-term reliability and is not supported under specified operating conditions. The device's internal protection structures are rated for transient spikes up to 18V, but sustained operation above 16V voids parametric guarantees per TI SGLS385A specification.

Can the TLC372MDREP operate from a dual-supply configuration?

Yes, the TLC372MDREP supports dual-supply operation provided the difference between VCC and VEE is maintained between 4V and 16V. The common-mode input voltage range includes ground, allowing VEE to be connected to 0V (GND) while VCC is set to +5V, +12V, or +15V - enabling flexible biasing for bipolar signal conditioning in mixed-signal systems.

Does the TLC372MDREP require external hysteresis for stable operation?

The TLC372MDREP does not include internal hysteresis, so external positive feedback is required when comparing slowly varying or noisy signals near the switching threshold. Without hysteresis, input noise or slow slew rates can cause output chatter; TI recommends adding a 10MΩ resistor from output to IN+ to achieve ~10mV hysteresis for typical 5V supply configurations.

What is the purpose of the open-drain output in the TLC372MDREP?

The open-drain output in the TLC372MDREP enables wired-AND logic, level translation across different voltage domains (e.g., 3.3V logic controlling a 12V relay), and direct interface with microcontroller GPIOs lacking internal pull-ups. It requires an external pull-up resistor - typically 10kΩ for 5V systems - and supports sinking up to 16mA while maintaining VOL ≤400mV at IOL = 4mA.

Is the TLC372MDREP pin-compatible with standard LM393 devices?

Yes, the TLC372MDREP is fully pin-compatible with the LM393 in SOIC-8 (D) packaging, sharing identical pin assignments, electrical interface behavior, and functional block diagram. This allows direct replacement in existing LM393-based designs without layout changes - provided the extended temperature, radiation tolerance, and ultra-low power advantages of the TLC372MDREP are leveraged in the updated application context.