Texas Instruments TL7726CP

Overview

TL7726CP from Texas Instruments is a hex clamping circuit IC designed to protect CMOS inputs against latch-up and transient overvoltage in analog-to-digital converter interfaces. It features six independent clamping channels, 25-mA sink capability per channel, <1-mW standby dissipation, and operates across 0°C to 70°C. Used in automotive sensor signal conditioning and industrial data acquisition front-ends.

For engineers reviewing the TL7726CP datasheet, TL7726CP pinout, TL7726CP application, or TL7726CP equivalent, this page delivers verified electrical parameters, thermal limits, clamping voltage tolerances, settling time behavior, and real-world protection use cases - all confirmed for the PDIP-8 package variant.

Technical Context

The TL7726CP implements six identical voltage-referenced clamp circuits that activate when input voltage falls below GND or exceeds REF (4.5–5.5 V). Each channel presents high impedance (<10 µA leakage) during normal operation and switches to low-impedance clamping mode with ±25 mA current sink capacity under fault conditions.

It provides stable clamping without overshoot across all capacitive loads and supports fast transient suppression with 30 µs settling time. The device uses internal reference generation (IZ = 25–60 µA at VREF = 5 V) and maintains functional integrity up to 150°C junction temperature.

Key Specifications

Pinout & Package

TL7726CP is housed in an 8-pin plastic dual in-line package (PDIP), with 0.3-inch body width and through-hole mounting compatibility. Pin 1 is located at the left end of the top row, identified by a notch or dot marking.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar clamping circuit applications.

Compared with TL7726IP, the TL7726CP offers lower cost and simpler qualification for commercial-temperature applications, while SN74LVC1G125DBVR trades integrated clamping functionality for logic compatibility - making TL7726CP optimal for dedicated, multi-channel analog protection where thermal margin and reference stability are critical.

Availability

TL7726CP is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial ADC front-ends, medical instrument signal paths, and test equipment input protection requiring stable component supply and long-term obsolescence management.

Supply support for TL7726CP 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 digital signal technologies with over 90 years of innovation history.

The TL7726CP belongs to TI's legacy analog protection portfolio, engineered specifically for robust input clamping in mixed-signal systems where latch-up prevention and transient immunity are mission-critical.

FAQ

What is the reference voltage range supported by TL7726CP?

The TL7726CP supports a reference voltage (V_REF) range of 4.5 V to 5.5 V, with absolute maximum rating of 6 V. This range sets the upper clamping threshold (V_IK+ = V_REF to V_REF+200 mV) and ensures compatibility with standard 5-V logic and ADC reference rails. Operation outside this range may compromise clamping accuracy or cause permanent damage to the TL7726CP.

Can TL7726CP be used with a 3.3-V system?

TL7726CP is not recommended for direct use in 3.3-V systems because its specified V_REF range starts at 4.5 V, and clamping thresholds scale accordingly. Using it with a 3.3-V reference would violate the minimum V_REF specification and degrade V_IK−/V_IK+ accuracy. For 3.3-V applications, consider purpose-built clamps like TL7705CP or redesign with external level-shifting - TL7726CP requires ≥4.5 V on REF to function per datasheet.

How many clamping channels does TL7726CP provide?

The TL7726CP integrates six independent clamping circuits in a single 8-pin PDIP package. Pins 2 through 6 each serve as dedicated CLAMP outputs, enabling simultaneous protection of six analog or digital input lines - ideal for multi-channel data acquisition systems, sensor arrays, or parallel bus interfaces where coordinated transient suppression is required.

What is the maximum transient voltage TL7726CP can suppress?

Per the datasheet test circuit (Figure 1), TL7726CP is characterized for ±13 V transient suppression with 1 µs rise time and 600 Ω source impedance. Its ±25 mA clamp current and defined V_IK+/V_IK− tolerances ensure reliable clamping up to these levels. Higher voltages may be handled depending on series impedance (e.g., 255 V possible with 10 kΩ limiting resistor), but the ±13 V condition reflects the validated transient immunity benchmark for TL7726CP.

Is TL7726CP RoHS compliant?

Yes, TL7726CP is RoHS compliant, as confirmed in TI's Packaging Information table: "RoHS: Yes" and "Lead finish/NIPDAU". It meets EU Directive 2011/65/EU requirements for restriction of hazardous substances, including lead-free terminations and compliant packaging materials - essential for export-ready industrial and automotive designs using TL7726CP.