Texas Instruments TLV3501AIDG4

Overview

TLV3501AIDG4 from Texas Instruments is a single, rail-to-rail input/output, high-speed comparator with 4.5 ns propagation delay at 100 mV overdrive, 2.7 V to 5.5 V supply operation, and integrated shutdown control. It delivers push-pull CMOS output compatible with TTL/CMOS logic and supports low-voltage portable systems requiring fast threshold detection.

For engineers reviewing the TLV3501AIDG4 datasheet, TLV3501AIDG4 pinout, TLV3501AIDG4 application, or TLV3501AIDG4 equivalent, key selection criteria include propagation delay vs. overdrive voltage, shutdown timing (100 ns turn-on), input common-mode range extending 0.2 V beyond rails, and SOT-23-6 package compatibility with space-constrained PCB layouts.

Technical Context

The TLV3501AIDG4 employs a high-gain, current-steering architecture optimized for sub-5 ns propagation with minimal skew (0.5 ns typical). Its beyond-the-rails input stage enables direct sensing of signals near supply rails, while the push-pull output drives capacitive loads up to 50 pF without external pull-ups.

Shutdown functionality is implemented via a dedicated SHDN pin that places the output in high-impedance state and reduces quiescent current to 2 µA. Input hysteresis is fixed at 6 mV, and internal ESD protection diodes clamp inputs to rails ±0.3 V with 10 mA current limit.

Key Specifications

Pinout & Package

TLV3501AIDG4 is packaged in a 6-pin SOT-23 (DBV) with body size 1.60 mm × 2.90 mm, optimized for high-density PCB layouts in portable instrumentation and communications modules.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV3501AIDG4, TLV3501CDG4 trades initial offset accuracy for lower cost in less demanding applications, while LMH7322MA/NOPB offers dual-channel capability at the expense of supply flexibility and shutdown control-making TLV3501AIDG4 optimal for single-channel, battery-aware, wide-supply designs.

Availability

TLV3501AIDG4 is available at Aetrix Electronics and suitable for automatic test equipment, wireless infrastructure monitoring, and portable medical diagnostics requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for TLV3501AIDG4 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 high-performance signal conditioning and precision timing solutions.

The TLV3501AIDG4 belongs to TI's high-speed comparator product line, engineered specifically for applications demanding nanosecond-level response, rail-to-rail operation, and microsize packaging in portable and communications equipment.

FAQ

What is the maximum operating frequency supported by the TLV3501AIDG4?

The TLV3501AIDG4 achieves a maximum toggle frequency of 80 MHz at 50 mV overdrive and 5 V supply. This is derived from its 4.5 ns propagation delay and 1.5 ns rise/fall times, enabling reliable operation in relaxation oscillators and high-speed clock recovery circuits. The TLV3501AIDG4 maintains this performance across –40°C to +125°C ambient temperatures.

Does the TLV3501AIDG4 require external pull-up resistors on its output?

No, the TLV3501AIDG4 features a push-pull CMOS output stage that actively drives both high and low states without external pull-up resistors. It sources and sinks ≥1 mA while maintaining VOL ≤ 50 mV and VOH ≥ (V+) − 30 mV at 1 mA load, ensuring direct compatibility with TTL and CMOS logic families. This eliminates board space and BOM cost associated with discrete pull-ups.

How does the shutdown function operate on the TLV3501AIDG4?

The TLV3501AIDG4 shutdown pin (Pin 6) is active-low: pulling it below (V+) − 1.7 V enables normal operation, while driving it above (V+) − 0.9 V disables the comparator and places the output in high-impedance state. Quiescent current drops to 2 µA max in shutdown. When unused, connect SHDN to V− to ensure default enable. Turn-on time is 100 ns typical.

Can the TLV3501AIDG4 accept input voltages beyond its supply rails?

Yes, the TLV3501AIDG4 features a beyond-the-rails input common-mode range of (V−) −0.2 V to (V+) −0.2 V. This allows direct interfacing with signals exceeding the supply rails by up to 0.2 V, such as DAC outputs or transducer signals referenced to different grounds. Input ESD diodes clamp to rails ±0.3 V, permitting brief excursions up to 10 mA with series current limiting.

What is the purpose of the 6 mV internal hysteresis in the TLV3501AIDG4?

The 6 mV internal hysteresis in the TLV3501AIDG4 prevents output oscillation caused by noise or slow-moving input signals near the switching threshold. It creates distinct upper and lower trip points, increasing noise immunity without requiring external positive feedback components. This simplifies design in applications like window comparators or power-good detection where stable edge generation is critical.