Diodes Incorporated LM2901T14-13

Overview

LM2901T14-13 from Diodes Incorporated is a quad differential voltage comparator IC with rail-to-rail input capability, 1 mV typical input offset voltage (A-grade), 25 nA input bias current, and operation from single 2–36 V or dual ±1.0–±18 V supplies. It features open-collector outputs compatible with TTL/CMOS/MOS logic and is used in overvoltage detection, zero-crossing sensing, and window comparator circuits.

For engineers reviewing the LM2901T14-13 datasheet, LM2901T14-13 pinout, LM2901T14-13 application, or LM2901T14-13 equivalent, key selection criteria include input offset voltage grade (A vs. standard), TSSOP-14 package thermal performance, output sink current capability (16 mA), and common-mode input range extending to ground.

Technical Context

The LM2901T14-13 implements four independent comparators using PNP-input transistor pairs, enabling input voltages down to ground and up to VCC − 1.5 V at +25°C. Its uncommitted NPN output stage allows wired-OR configurations and flexible pull-up voltage selection independent of VCC.

Each comparator delivers 200 V/mV small-signal voltage gain, 300 ns large-signal response time under 100 mV step with 5 mV overdrive, and maintains 0.9 mA typical supply current at 5 V - stable across 2–30 V supply range due to bias network independence from VCC magnitude.

Key Specifications

Pinout & Package

TSSOP-14 package: 4.4 mm × 5.0 mm body, 0.65 mm pitch, 1.2 mm height, green mold compound, RoHS-compliant, halogen-free.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LM339DT, LM2901T14-13 offers tighter offset and lower supply current; versus TLV331IDBVR, it provides higher voltage operation, stronger output drive, and integrated quad functionality in one TSSOP-14 package - optimizing board space and BOM count for industrial 5–36 V systems.

Availability

LM2901T14-13 is available at Aetrix Electronics and suitable for overvoltage protection, zero-crossing detection, window comparator, and LED driver applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for LM2901T14-13 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

Diodes Incorporated is a global semiconductor company specializing in discrete, analog, and mixed-signal solutions, with design centers across Asia, Europe, and the US, serving industrial, computing, consumer, and communications markets.

The LM2901 series belongs to Diodes' precision analog comparator product line, engineered for high-reliability industrial and automotive applications where wide supply range, ground-sensing capability, and robust ESD tolerance are essential.

FAQ

What is the maximum differential input voltage the LM2901T14-13 can withstand?

The LM2901T14-13 supports a differential input voltage of up to 36 V, as specified in its Absolute Maximum Ratings. This allows inputs to swing beyond the supply rails - for example, one input may be at 0 V while the other is at +36 V - without damage, provided common-mode limits are observed.

Can the LM2901T14-14 operate from a single 3.3 V supply?

Yes, the LM2901T14-13 operates from a single supply as low as 2 V, making it fully compatible with 3.3 V systems. At 3.3 V, input common-mode range extends from 0 V to 1.8 V, and output saturation remains below 150 mV at 4 mA load, ensuring reliable logic-level interfacing.

Does the LM2901T14-13 require external hysteresis for stable operation?

Hysteresis is recommended when the input signal has slow edges or low noise margin, as the comparator's high gain can cause oscillation near threshold. The datasheet advises adding 1–10 mV positive feedback; however, for clean digital or fast-pulse inputs, hysteresis is not required.

How does the open-collector output behave when pulled up to a voltage higher than VCC?

The output transistor's collector can be pulled up to any voltage ≤36 V, regardless of VCC value. This enables level translation - e.g., VCC = 5 V with 12 V pull-up - because the output stage is isolated from VCC except for biasing; no internal clamping diodes limit this configuration.