Texas Instruments TL3116IDG4

Overview

TL3116IDG4 from Texas Instruments is an ultra-fast, dual-supply comparator with complementary TTL-compatible outputs, 10 ns typical propagation delay, ±5-V or single 5-V operation, and input common-mode range extending to the negative rail - used in high-speed analog-to-digital interfaces, precision threshold detection, and latch-enabled signal conditioning circuits.

For engineers reviewing the TL3116IDG4 datasheet, TL3116IDG4 pinout, TL3116IDG4 application, or TL3116IDG4 equivalent, key selection criteria include propagation delay under low overdrive, latch-enable timing (3.4 ns setup), output drive capability (±20 mA), and operation across −40°C to 85°C industrial temperature range.

Technical Context

The TL3116IDG4 implements a bipolar comparator architecture with differential input stage optimized for speed and rail-to-rail common-mode input (−5 V to +2.5 V at ±5 V supply). Its latch enable terminal controls output state retention without external logic, and complementary Q/Q̅ outputs support direct connection to TTL or CMOS loads.

It achieves 10 ns propagation delay with 100 mV input overdrive and maintains stable performance across load capacitance up to 50 pF and supply voltage variation from ±4.6 V to ±5.4 V, while consuming only 12.7 mA typical positive supply current.

Key Specifications

Pinout & Package

TL3116IDG4 is packaged in an 8-pin SOIC (D package), 3.91 mm × 4.90 mm body, 1.75 mm max height, with gull-wing leads and RoHS-compliant NiPdAu finish. Pin 1 identifier is a beveled corner or notch on the top surface.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LT1116CS8#PBF and LM311DR, TL3116IDG4 delivers superior speed-power tradeoff (10 ns / 12.7 mA), integrated latch functionality, and guaranteed complementary outputs - making it optimal for space-constrained, high-throughput industrial and test equipment where deterministic timing and minimal BOM count are critical.

Availability

TL3116IDG4 is available at Aetrix Electronics and suitable for motor control feedback, high-speed data acquisition, and industrial sensor thresholding requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for TL3116IDG4 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 connectivity technologies, with decades of expertise in high-performance signal chain components.

The TL3116IDG4 belongs to TI's precision high-speed comparator product line, engineered specifically for applications demanding nanosecond-level timing accuracy, latch-controlled decision retention, and robust operation in noisy industrial environments.

FAQ

What is the maximum operating temperature for TL3116IDG4?

The TL3116IDG4 is rated for continuous operation from −40°C to +85°C ambient temperature. This industrial-grade specification is validated per the absolute maximum ratings table and confirmed in the electrical characteristics section for the 'I' grade (TL3116I), which TL3116IDG4 implements. Thermal derating begins above 25°C per the dissipation rating table, with 5.8 mW/°C reduction for the SOIC (D) package.

Does TL3116IDG4 support single-supply operation?

Yes, TL3116IDG4 supports true single-supply operation at +5 V. In this configuration, VCC− (Pin 4) is connected to GND (Pin 7), and the input common-mode range extends from 0 V to +2.5 V. The device maintains 10 ns typical propagation delay and full output swing (VOH ≈ 3.6 V, VOL ≈ 0.6 V) under these conditions, as specified in the electrical characteristics table for VDD = 5 V.

What is the purpose of the LATCH ENABLE pin on TL3116IDG4?

The LATCH ENABLE pin (Pin 8) controls output state retention: when driven high (VIH ≥ 2 V), it freezes the Q and Q̅ outputs at their current logic states, independent of subsequent input changes. This function eliminates metastability in sampled-data systems and enables pulse-width measurement or event capture. Setup time is 3.4 ns, and the latch remains active as long as the pin is held high.

Can TL3116IDG4 drive TTL logic directly?

Yes, TL3116IDG4 outputs are fully TTL-compatible. At VCC = +5 V, VOH is ≥3.6 V (min) with 1 mA source current, and VOL is ≤600 mV (max) with 4 mA sink current - meeting standard TTL VOH/VOL thresholds. The complementary Q/Q̅ outputs can drive up to 10 standard TTL unit loads without external buffers, as verified in the switching characteristics and output voltage vs. current graphs.

Is TL3116IDG4 pin-compatible with LT1116?

Yes, TL3116IDG4 is explicitly documented as a pin-for-pin functional replacement for the LT1116 comparator. Both devices share identical 8-pin SOIC (D) pinout, supply configurations (±5 V or +5 V), complementary output structure, and latch enable functionality. However, TL3116IDG4 offers lower supply current (12.7 mA vs. ~18 mA) and tighter offset voltage (3 mV vs. ±5 mV), per the datasheet comparison statement.