Texas Instruments TL3116CDR

Overview

TL3116CDR from Texas Instruments is an ultra-fast, rail-to-rail input comparator with complementary TTL-compatible outputs, 10 ns typical propagation delay, ±5-V or single 5-V supply operation, and latch-enable functionality for precise timing capture in high-speed digital systems.

For engineers reviewing the TL3116CDR datasheet, TL3116CDR pinout, TL3116CDR application, or TL3116CDR equivalent, key selection criteria include propagation delay vs. overdrive voltage, input common-mode range extending to negative rail, latch timing skew (<0.5 ns), output drive capability (±20 mA), and SOIC-8 thermal derating (5.8 mW/°C).

Technical Context

The TL3116CDR implements a bipolar differential input stage with high-gain, low-offset architecture enabling sub-10 ns response at 100 mV overdrive. Its latch-enable terminal controls output state retention without external logic, and complementary Q/Q̅ outputs support direct interface to TTL or CMOS loads.

It operates across 0°C to 70°C ambient, supports dual ±5-V or single 5-V supplies, and maintains stable propagation delay (9.9–14 ns) and pulse skew (≤0.5 ns) over temperature and load capacitance up to 50 pF.

Key Specifications

Pinout & Package

TL3116CDR is housed in an 8-pin SOIC (D) package, 3.91 mm wide, 4.9 mm long, 1.75 mm max height, with standard JEDEC MS-012AA footprint and 1.27 mm pitch.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TL3116CDR, LT1116CS8#TR offers identical pinout and latch functionality but consumes more power and supports wider temperature range, while LM311DR lacks latch capability and is 20× slower-making it unsuitable for real-time control or high-speed data acquisition where TL3116CDR's 10 ns delay and integrated latch provide decisive timing advantage.

Availability

TL3116CDR is available at Aetrix Electronics and suitable for motor control feedback monitoring, high-speed data acquisition triggering, and power supply sequencing supervision requiring stable component supply and documented legacy industrial support.

Supply support for TL3116CDR 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, embedded processing, and logic technologies, with decades of expertise in high-performance signal conditioning and interface ICs.

The TL3116CDR belongs to TI's precision high-speed comparator product line, engineered for applications demanding nanosecond timing accuracy, rail-to-rail input operation, and integrated output latching in industrial automation and test equipment.

FAQ

What is the operating temperature range for TL3116CDR?

The TL3116CDR is rated for 0°C to 70°C free-air operating temperature, matching the TL3116C grade specified in the original datasheet. This range is validated for stable propagation delay, offset voltage, and latch timing performance. The TL3116CDR uses the same die as TL3116CD and shares identical electrical characteristics across this commercial temperature span. Always verify board-level thermal design to maintain junction temperature below 150°C.

Does TL3116CDR support single-supply operation?

Yes, TL3116CDR supports true single 5-V supply operation with input common-mode range from ground (0 V) to 2.5 V. When operated this way, VCC− is tied to GND, and the device retains full rail-to-rail input capability down to the negative rail (now 0 V). Output swing remains TTL-compatible, delivering VOH ≥ 3.6 V and VOL ≤ 0.6 V under 1 mA load. This configuration is widely used in 5-V data acquisition and industrial control systems.

What is the purpose of the LATCH ENABLE pin on TL3116CDR?

The LATCH ENABLE pin (Pin 8) on TL3116CDR is an active-high TTL-compatible control that freezes the Q and Q̅ output states on its rising edge. With a 3.4 ns setup time requirement, it enables precise synchronization to system clocks or event triggers. Once latched, outputs retain their last-comparison state until the next enable pulse, eliminating metastability in sampled-data systems. This feature is integral to TL3116CDR's role in peak detection, fault capture, and digital waveform generation.

Is TL3116CDR pin-compatible with LT1116?

Yes, TL3116CDR is explicitly documented as a pin-for-pin functional replacement for the LT1116 comparator. Both devices share identical SOIC-8 pin assignments, including VCC+, IN+, IN−, VCC−, Q OUT, Q̅ OUT, GND, and LATCH ENABLE. Electrical behavior-including propagation delay, latch timing, and output drive-is closely matched, though TL3116CDR achieves lower supply current (12.7 mA vs. 15 mA typical) while maintaining equivalent speed and precision.

What package type is used for TL3116CDR?

TL3116CDR is supplied in an 8-pin SOIC (Small Outline Integrated Circuit) package, designated "D" by Texas Instruments. It measures 3.91 mm × 4.90 mm × 1.75 mm max height, with 1.27 mm lead pitch and JEDEC MS-012AA compliance. The package supports standard reflow profiles (Level-1-260°C-UNLIM), and board layout guidelines-including land pattern, solder mask, and stencil design-are provided in TI's official packaging documentation for SOIC-D.