Analog Devices Inc./Maxim Integrated MAX6832HXRD0+T

Overview

MAX6832HXRD0+T from Maxim Integrated is a 3-pin SC70 ultra-low-voltage microprocessor reset circuit with active-low push-pull RESET output, 1.313V factory-set reset threshold (H-suffix), and 70µs timeout period (D0-suffix). It monitors +1.2V to +1.8V supplies in portable and battery-powered systems, asserting reset during power-up, brownout, or manual reset events. Designed for critical µP power monitoring where supply current <13µA and guaranteed reset validity down to VCC = 0.55V are required.

For engineers reviewing the MAX6832HXRD0+T datasheet, MAX6832HXRD0+T pinout, MAX6832HXRD0+T application, or MAX6832HXRD0+T equivalent, this page delivers verified technical context, exact pin functions, real-world use scenarios, and validated alternative options - all grounded in Maxim's official 2005 datasheet Rev 2.

Technical Context

The MAX6832HXRD0+T implements a precision voltage comparator with ±2.5% threshold accuracy over -40°C to +85°C, referenced to an internal 444mV bandgap. Its reset assertion logic responds to VCC falling below 1.313V or MR low assertion, holding RESET low for exactly 70µs after VCC rises above threshold or MR deasserts.

No manual reset input (MR) is present on the MAX6832 variant - it is a 3-pin device (VCC, GND, RESET) without MR or RESET-IN pins. The push-pull active-low RESET output sinks ≥15µA at VCC ≥ 0.55V and maintains valid logic levels down to VCC = 0.55V, eliminating external pullup requirements.

Key Specifications

Pinout & Package

MAX6832HXRD0+T is housed in a 3-pin SC70 package (2.0mm × 2.1mm, 0.65mm pitch) with gull-wing leads. Pin 1 = GND, Pin 2 = RESET (active-low push-pull), Pin 3 = VCC. No MR or RESET-IN terminals - minimal footprint optimized for voltage-detection-only applications.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar voltage detector and µP reset applications.

Compared with MAX809HTRG+T and TPS3808G13DBVR, the MAX6832HXRD0+T uniquely delivers 70µs reset assertion in a 3-pin SC70 package with factory-trimmed 1.313V threshold - making it the only option for space-constrained, low-power systems requiring sub-100µs brownout detection without design iteration.

Availability

MAX6832HXRD0+T is available at Aetrix Electronics and suitable for battery-powered sensor nodes, low-voltage microcontroller power monitoring, portable medical diagnostic devices, and energy-harvesting wearables requiring stable component supply across industrial temperature ranges and long-lifecycle programs.

Supply support for MAX6832HXRD0+T 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

Maxim Integrated (now part of Analog Devices) is a U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and consumer applications.

The MAX6832–MAX6840 family was designed specifically for ultra-low-voltage µP supervisory functions in portable and battery-critical systems - prioritizing minimal quiescent current, small SC70 packaging, and precise factory-set thresholds for 1.2V–1.8V supply rails.

FAQ

What is the exact reset threshold voltage of the MAX6832HXRD0+T?

The MAX6832HXRD0+T has a factory-set reset threshold of 1.313V, with ±2.5% accuracy over the full -40°C to +85°C operating temperature range. This value is defined by the 'H' suffix in the part number and is confirmed in Table 1 (Threshold Suffix Guide) of the Maxim datasheet Rev 2. The threshold remains stable across voltage and temperature variations, enabling reliable detection of brownout conditions on 1.3V rails.

Does the MAX6832HXRD0+T include a manual reset (MR) input?

No, the MAX6832HXRD0+T does not include a manual reset (MR) input. As a 3-pin SC70 device (VCC, GND, RESET), it belongs to the MAX6832/MAX6833/MAX6834 subgroup, which lacks MR functionality. Only the 4-pin variants (e.g., MAX6835/MAX6836/MAX6837) feature debounced MR inputs. The MAX6832HXRD0+T relies solely on VCC monitoring for reset assertion.

What is the purpose of the D0 suffix in MAX6832HXRD0+T?

The 'D0' suffix in MAX6832HXRD0+T specifies a 70µs reset timeout period - the shortest option in the family and designated for voltage detector applications rather than full µP reset. This value is confirmed in Table 2 (Active Timeout Period Guide) of the datasheet. Unlike longer timeouts (e.g., D1 = 1.5ms), the 70µs period ensures rapid response to transient supply dips without unnecessarily holding the processor in reset.

Can the MAX6832HXRD0+T operate with supply voltages below 1.2V?

Yes, the MAX6832HXRD0+T is fully specified to operate down to VCC = 0.55V, and its reset function remains guaranteed across this range. While its 1.313V threshold is optimized for 1.2V–1.8V supplies, the device continues asserting RESET as VCC falls below 0.55V (though output sink capability degrades below that point). This behavior is explicitly documented in the Absolute Maximum Ratings and Electrical Characteristics tables.

Is the MAX6832HXRD0+T pin-compatible with other reset ICs?

The MAX6832HXRD0+T is pin-compatible with the MAX803/MAX809/MAX810 series and MAX6711–MAX6713 family in SC70-3 packaging, as stated in the datasheet's Features section. However, electrical differences exist - notably the 70µs timeout and 1.313V threshold - so direct substitution requires validation of timing and threshold requirements in the target application. It is not pin-compatible with 4-pin variants like MAX6835 or MAX6838.