Analog Devices Inc./Maxim Integrated DS1816-10+T&R

Overview

DS1816-10+T&R from Maxim Integrated (now Analog Devices) is a precision voltage-monitoring supervisory IC that provides active-low reset output for microprocessor systems. It features 10% V_CC trip point (2.80–2.97 V), 150 ms reset timeout, open-drain RST with internal 5 kΩ pull-up, and operates from -40°C to +85°C in SOT-23 package - used in embedded power-on reset sequencing for 3V systems.

For engineers reviewing the DS1816-10+T&R datasheet, DS1816-10+T&R pinout, DS1816-10+T&R application, or DS1816-10+T&R equivalent, key selection criteria include trip-point tolerance, reset timeout stability, open-drain drive capability, operating temperature range, and compatibility with 3V microcontroller supply rails.

Technical Context

The DS1816-10+T&R implements a temperature-compensated bandgap reference and comparator to detect V_CC deviations beyond ±10% of nominal 3V supply. Its internal timing circuit ensures RST remains asserted for 100–250 ms after V_CC recovery, meeting JEDEC JESD78 latch-up immunity requirements during power-up.

It uses an open-drain output stage with integrated 3.5–7.5 kΩ pull-up resistor, eliminating external components in most 3V MCU reset circuits. The device draws only 28–35 µA quiescent current and tolerates V_CC up to 5.5V, supporting mixed-voltage system monitoring.

Key Specifications

Pinout & Package

SOT-23-3 surface-mount package (2.92 mm × 1.3 mm × 1.0 mm); TO-92 also available but DS1816-10+T&R specifically shipped in tape-and-reel SOT-23 format.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar voltage-monitoring reset applications.

Compared with TPS3808G12DBVR and MAX6326UT29D3+T, the DS1816-10+T&R delivers factory-trimmed ±10% 3V monitoring with integrated pull-up and proven 150 ms timing - simplifying design for cost-sensitive industrial 3V MCU platforms where fixed functionality suffices.

Availability

DS1816-10+T&R is available at Aetrix Electronics and suitable for industrial control panels, smart utility meters, medical diagnostics equipment, and automotive body electronics requiring stable component supply across multi-year production cycles.

Supply support for DS1816-10+T&R 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

Analog Devices (via acquisition of Maxim Integrated) designs high-performance analog, mixed-signal, and power management ICs for precision sensing, signal conditioning, and system supervision.

The DS1816-10+T&R belongs to Maxim's EconoReset™ family - engineered for cost-effective, single-function power-supply monitoring in resource-constrained embedded systems without sacrificing accuracy or reliability.

FAQ

What is the exact V_CC trip point range for DS1816-10+T&R?

The DS1816-10+T&R has a guaranteed V_CC trip point range of 2.80 V (minimum) to 2.97 V (maximum) at -40°C to +85°C, corresponding to ±10% tolerance around a nominal 3.0 V supply. This is factory-trimmed and specified in the DC Electrical Characteristics table under VCCTP for DS1816-10. The typical value is 2.88 V.

Does DS1816-10+T&R require an external pull-up resistor on the RST pin?

No, DS1816-10+T&R includes an internal pull-up resistor of 3.5–7.5 kΩ (typical 5 kΩ) on the open-drain RST output. An external pull-up is only needed if the connected MCU reset input demands stronger drive or lower rise time than the internal resistor provides - verified per application note AN5017.

Can DS1816-10+T&R operate with a 5V supply rail?

Yes, DS1816-10+T&R supports V_CC from 0 V to 5.5 V per Absolute Maximum Ratings. However, its trip point remains fixed at ~2.88 V - so it monitors 5V rails for brown-out down to 2.88 V, not for overvoltage. For 5V-specific monitoring, DS1816-20 (20% tolerance) or DS1816-5 (5% tolerance) variants are recommended.

What is the reset timeout behavior of DS1816-10+T&R during power-up?

During power-up, DS1816-10+T&R asserts RST low until V_CC reaches the trip threshold, then holds RST active for 100–250 ms (typical 150 ms) to ensure power supply and microprocessor stabilization. This timing is internally generated and independent of external components, as confirmed in the Timing Diagram: Power-Up (Figure 3).

Is DS1816-10+T&R qualified for automotive applications?

DS1816-10+T&R is rated for -40°C to +85°C operation and meets industrial reliability standards, but it is not AEC-Q200 qualified. For automotive body electronics, it may be used in non-safety-critical modules (e.g., interior lighting control) with proper system-level validation; however, DS1816-10+T&R is not certified for under-hood or ASIL-B/C applications.