STMicroelectronics L9700D013TR

Overview

L9700D013TR from STMicroelectronics is a hex precision voltage limiter IC designed for high-speed input protection in automotive electronics, featuring dual clamping to ground and V_CC, 4.75–5.25 V supply range, ±250 mV static clamping voltage at ±10 mA, 20 ns setting time, and 5 Ω dynamic input resistance.

For engineers reviewing the L9700D013TR datasheet, L9700D013TR pinout, L9700D013TR application, or L9700D013TR equivalent, this device serves as a fast-acting, low-leakage (≤5 µA) clamping solution for analog sensor interfaces, CAN/LIN bus I/O protection, and microcontroller input conditioning where sub-25 ns transient response and bidirectional rail-to-rail clamping are required.

Technical Context

The L9700D013TR implements six independent clamp channels using vertically integrated PNP transistors with isolated collectors and internal feedback to achieve 20 ns setting time and <400 mV dynamic overshoot under ±10 mA, 5 ns rise-time transients. Its dual-reference architecture clamps both negative and positive excursions relative to GND and V_CC simultaneously.

It operates exclusively from a single 5 V supply (4.75–5.25 V), eliminating need for external bias rails, and integrates ESD protection per MIL-STD-883C. Input leakage remains ≤5 µA across full temperature range (–40°C to +125°C), preserving signal integrity in high-impedance sensor front-ends.

Key Specifications

Pinout & Package

Package: SO8 (Small Outline Integrated Circuit, 150 mil width), RoHS-compliant, moisture-sensitive level 1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV6001QDRQ1 and SP1001-01WTG, the L9700D013TR uniquely delivers six-channel, precision ±250 mV clamping with 20 ns speed and 5 µA leakage in a single SO8 package-enabling compact, deterministic protection without external components or trade-offs in accuracy or channel density.

Availability

L9700D013TR is available at Aetrix Electronics and suitable for automotive body control modules, engine management sensor interfaces, infotainment system analog front-ends, and industrial PLC input conditioning requiring stable component supply and long-term lifecycle support.

Supply support for L9700D013TR 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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, specializing in automotive-grade analog, power, and microcontroller solutions with vertical manufacturing and AEC-Q100 qualification expertise.

The L9700 series belongs to ST's automotive protection IC portfolio, engineered specifically for high-reliability, low-leakage voltage limiting in harsh-temperature sensor and communication interfaces where passive diode clamps fail to meet speed or precision requirements.

FAQ

What is the maximum transient current each channel can handle?

Each channel supports ±10 mA continuous clamping current per the electrical characteristics table, with absolute maximum input current rated at ±30 mA. Sustained operation above ±10 mA requires thermal derating based on R_{th j-amb} = 200 °C/W for SO8; peak transient handling is validated up to 50 V/µs slew rate with <400 mV overshoot.

Can L9700D013TR be used with 3.3 V systems?

No-L9700D013TR is specified only for 4.75–5.25 V operation and clamps relative to that V_CC rail. Using it with 3.3 V violates the minimum supply voltage and shifts clamping thresholds outside guaranteed limits; ST does not characterize or guarantee performance below 4.75 V.

Is external current-limiting resistor required on input pins?

Yes-a series resistor (R_S) is mandatory to limit peak input current during transients. Per Figure 3 and application note, R_S = (V_{transient peak} – V_clamp) / I_{IN MAX}; for 50 V transients and ±10 mA max, R_S ≥ 4.75 kΩ ensures compliance with absolute maximum ratings.

Does L9700D013TR support hot-swap or live-insertion?

No-L9700D013TR lacks power-on reset, undervoltage lockout, or controlled turn-on sequencing. Applying V_CC while inputs are biased violates the absolute maximum rating for input current (±30 mA), risking permanent damage; power must be applied before signal routing in system design.