Texas Instruments TL3116CPW

Overview

TL3116CPW 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 - deployed in high-speed analog-to-digital interface circuits and precision threshold detection systems.

For engineers reviewing the TL3116CPW datasheet, TL3116CPW pinout, TL3116CPW application, or TL3116CPW equivalent, key selection criteria include propagation delay vs. overdrive voltage, latch-enable timing (3.4 ns setup), input common-mode range extending to negative rail, low 12.7 mA supply current, and TSSOP-8 package compatibility with space-constrained PCB layouts.

Technical Context

The TL3116CPW implements a bipolar differential input stage with high open-loop gain (>100 dB) and tightly controlled offset voltage (3 mV typ), enabling precise zero-crossing and window detection. Its complementary Q and Q̅ outputs drive TTL loads directly without external level-shifting.

Latch enable functionality operates with 2 V logic-high threshold and supports synchronous sampling of comparator decisions; propagation delay remains stable across −40°C to 85°C for the I-grade variant, though TL3116CPW is rated for 0°C to 70°C operation per its C-grade marking.

Key Specifications

Pinout & Package

TSSOP-8 package (2.9 mm × 4.3 mm × 1.2 mm height), lead-free NIPDAU finish, MSL Level-1, RoHS compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LT1116CS8#PBF, TL3116CPW reduces supply current by 30% and adds latch control; versus LMH7322MA/NOPB, it supports 5 V TTL interfacing and rail-to-rail inputs but trades off speed and voltage scalability for system-level simplicity in industrial control.

Availability

TL3116CPW is available at Aetrix Electronics and suitable for high-speed data acquisition, precision threshold detection, logic-level translation interface, and synchronous signal conditioning requiring stable component supply and long-term obsolescence management.

Supply support for TL3116CPW 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 over 90 years of innovation in precision analog ICs.

The TL3116 series was designed for high-speed, low-power comparator applications in industrial automation, test equipment, and communications infrastructure where timing accuracy and supply flexibility are critical.

FAQ

What is the maximum operating temperature range for the TL3116CPW?

The TL3116CPW is specified for operation from 0°C to 70°C (commercial grade). While absolute maximum ratings extend to −40°C to 85°C, electrical characteristics including propagation delay, offset voltage, and latch timing are only guaranteed across the 0°C to 70°C range per the TL3116C datasheet revision. For extended temperature operation, the TL3116IPWR variant should be selected.

Does the TL3116CPW require external pull-up resistors on its Q and Q̅ outputs?

No, the TL3116CPW features push-pull TTL-compatible outputs capable of sourcing 1 mA and sinking 10 mA directly. External pull-ups are unnecessary for standard TTL loading; however, if interfacing with CMOS inputs requiring higher voltage thresholds, verify VOH/ VOL margins under actual load conditions before omitting pull-ups.

Can the TL3116CPW operate from a single 3.3 V supply?

No - the TL3116CPW is not characterized or guaranteed for 3.3 V operation. Its absolute maximum supply rating is ±7 V, but recommended operation is strictly ±5 V or single 5 V. At 3.3 V, propagation delay increases significantly, output swing degrades, and latch-enable functionality may fail due to insufficient VIH margin. Use LMH7322 or TLV3501 for 3.3 V designs.

How does the latch-enable function of the TL3116CPW interact with input overdrive?

The TL3116CPW latch-enable function freezes the output state regardless of subsequent input transitions, but proper setup requires the input differential voltage to be stable ≥3.4 ns before LATCH ENABLE goes high. Propagation delay (tpd) decreases with higher overdrive (e.g., 6 ns at 500 mV), so timing margins must be calculated using worst-case 100 mV overdrive values unless overdrive is actively controlled in the system.

Is the TL3116CPW pin-compatible with the TL3116CD in SOIC-8 packaging?

Yes - both TL3116CPW (TSSOP-8) and TL3116CD (SOIC-8) share identical pin numbering, pin functions, and electrical specifications for the C-grade temperature range. However, PCB layout must accommodate different land patterns: TSSOP-8 requires 0.65 mm pitch and tighter solder mask definition, while SOIC-8 uses 1.27 mm pitch. No schematic changes are needed for substitution.