Texas Instruments TLV3502AID

Overview

TLV3502AID from Texas Instruments is a dual, rail-to-rail input/output, 4.5-ns high-speed comparator in 8-pin SOIC package, operating from 2.7 V to 5.5 V with ±6.5 mV input offset voltage and 3.2 mA quiescent current. It delivers push-pull CMOS outputs directly compatible with TTL/CMOS logic and supports applications requiring fast threshold detection with low-voltage operation.

For engineers reviewing the TLV3502AID datasheet, TLV3502AID pinout, TLV3502AID application, or TLV3502AID equivalent, this page provides verified technical context, real-world switching behavior (e.g., 4.5 ns propagation delay at 100-mV overdrive), package-specific thermal metrics (R_θJA = 116.4 °C/W), and validated alternative options for dual high-speed comparator selection.

Technical Context

The TLV3502AID integrates two independent comparators with beyond-the-rails input common-mode range (V_CM = V⁻ − 0.2 V to V⁺ − 0.2 V) and internal 6 mV hysteresis for noise immunity. Each channel features matched propagation delay skew ≤0.5 ns and operates across −40°C to +125°C.

It uses a push-pull CMOS output stage-no external pull-up required-and lacks shutdown functionality (unlike TLV3501). Input bias current is ±10 pA max, and common-mode rejection ratio is 57–70 dB, enabling stable operation in noisy mixed-signal environments with rail-to-rail signal swing.

Key Specifications

Pinout & Package

TLV3502AID is housed in an 8-pin SOIC (D) package measuring 3.91 mm × 4.90 mm, with exposed pad not present and standard JEDEC MS-012AC footprint. Thermal resistance R_θJA = 116.4 °C/W enables reliable operation up to 125°C ambient when mounted on 1-in² 2-oz copper.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV3502CDR and LMH7322MA/NOPB, TLV3502AID offers optimal thermal performance in SOIC packaging and built-in hysteresis-reducing component count and layout complexity for 2.7–5.5 V systems requiring robust, low-jitter dual comparison.

Availability

TLV3502AID is available at Aetrix Electronics and suitable for automatic test equipment, wireless infrastructure monitoring, and high-reliability motor control applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for TLV3502AID 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 chain and high-speed interface solutions.

The TLV3502AID belongs to TI's TLV350x family of ultra-fast comparators designed specifically for applications demanding sub-5 ns decision latency, rail-to-rail operation, and microsize packaging in harsh thermal environments.

FAQ

What is the maximum operating frequency supported by TLV3502AID?

The TLV3502AID supports a maximum toggle frequency of 80 MHz under 50-mV overdrive at V_S = 5 V, as specified in the switching characteristics table. This capability stems directly from its 4.5 ns typical propagation delay and matched rise/fall times of 1.5 ns each. For reliable operation at this rate, proper PCB layout-including ground plane integrity and 0.1 µF local bypass-is essential. The TLV3502AID datasheet confirms this value is measured-not estimated-under controlled conditions.

Does TLV3502AID include a shutdown feature?

No, TLV3502AID does not include a shutdown feature. Unlike the single-channel TLV3501, the TLV3502 family-including TLV3502AID-has no SHDN pin or internal disable function. Its quiescent current remains fixed at 3.2 mA (typical) across the full operating temperature and supply range. If power gating is required, external MOSFET switching on the V⁺ rail must be implemented, though this adds complexity and may affect propagation delay consistency.

Can TLV3502AID drive TTL logic directly?

Yes, TLV3502AID can drive TTL logic directly. Its push-pull CMOS output stage delivers rail-to-rail voltage swing with VOL ≤ 50 mV and VOH ≥ V⁺ − 30 mV at ±1 mA load, satisfying TTL input thresholds (V_IL ≤ 0.8 V, V_IH ≥ 2.0 V) across the full 2.7–5.5 V supply range. No external pull-up resistor is needed, unlike open-drain comparators. This capability is explicitly confirmed in the "Description" section and electrical characteristics table of the TLV3502AID datasheet.

What is the input hysteresis value of TLV3502AID?

The TLV3502AID includes 6 mV of internal hysteresis, as stated in Section 7.1 ("Overview") and Table 6.6 ("Electrical Characteristics") of its datasheet. This hysteresis improves noise immunity by creating a small voltage dead-band between rising and falling input thresholds. It is fixed and non-adjustable. For applications requiring greater hysteresis-such as slow-moving or highly noisy signals-external positive feedback can be added to the +IN pins, as demonstrated in Figure 17 of the TLV3502AID application notes.

Is TLV3502AID pin-compatible with other SOIC-8 comparators?

TLV3502AID follows the industry-standard SOIC-8 pinout for dual comparators (e.g., Pins 1/2 = CHA inputs, Pins 3/4 = CHB inputs, Pins 6/7 = outputs, Pins 5/8 = supplies), matching devices like LM393DR and TLC372CP. However, it is not functionally or electrically pin-compatible due to differences in input structure (beyond-the-rails vs. limited CMVR), output type (push-pull vs. open-collector), and speed (4.5 ns vs. µs-range). Direct replacement requires circuit validation-especially for output loading and input biasing.