Analog Devices Inc./Maxim Integrated MX584TH

Overview

MX584TH from Maxim Integrated is a military-grade, pin-programmable precision voltage reference delivering ±10mV initial output tolerance at +10V, 15ppm/°C max temperature coefficient, and programmable outputs of +10.00V, +7.50V, +5.00V, or +2.50V - all without external components. It operates from 4.5V to 30V input and features STROBE-controlled shutdown (100µA quiescent current), supporting high-accuracy A/D and D/A converters in harsh-environment instrumentation.

For engineers reviewing the MX584TH datasheet, MX584TH pinout, MX584TH application, or MX584TH equivalent, key selection considerations include its -55°C to +125°C operating range, TO-99 metal-can package with case-grounded COMMON, laser-trimmed stability, and compatibility with precision data acquisition systems requiring low-drift, short-circuit-proof references.

Technical Context

The MX584TH implements a temperature-compensated bandgap core followed by a buffered noninverting amplifier stage, enabling four factory-trimmed output voltages selected via pin strapping (pins 1–3). Its STROBE input (pin 5) provides TTL-compatible active-low shutdown, reducing supply current from 750µA to ~100µA while maintaining output zeroing.

Output regulation is achieved through internal feedback with ±10mV error (MX584TH grade) over full military temperature range, supported by differential tempco ≤3ppm/°C between outputs and long-term stability of 25ppm/khrs. The device sources and sinks up to 10mA while remaining short-circuit proof to either rail.

Key Specifications

Pinout & Package

MX584TH is housed in an 8-lead TO-99 metal can package with tab connected to COMMON (pin 4), providing hermetic sealing and excellent thermal/mechanical stability for military applications. The case serves as a low-inductance ground path and EMI shield.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX6126ASA25 and REF5025IPK, MX584TH uniquely combines military-temperature operation, pin-selectable outputs, STROBE control, and high-voltage tolerance - making it irreplaceable in legacy avionics, defense instrumentation, and high-reliability industrial systems where design continuity and multi-voltage flexibility are mandatory.

Availability

MX584TH is available at Aetrix Electronics and suitable for precision data acquisition systems, aerospace instrumentation, and military-grade measurement equipment requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for MX584TH 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 computing markets.

The MX584 product line was engineered for high-accuracy, temperature-stable voltage referencing in demanding data conversion and instrumentation applications - particularly where programmability, rugged packaging, and military-grade reliability are essential.

FAQ

What is the operating temperature range of the MX584TH?

The MX584TH is specified for operation from -55°C to +125°C, meeting military-grade environmental requirements. This range is confirmed in the Ordering Information table and Absolute Maximum Ratings section of the official datasheet. The MX584TH achieves ±10mV output tolerance and 15ppm/°C max tempco across this full range, making it suitable for avionics, downhole tools, and defense electronics where extreme thermal stability is mandatory. MX584TH's TO-99 metal-can package contributes to its robust thermal performance.

How do I configure the MX584TH for +5.00V output?

To configure the MX584TH for +5.00V output, connect pin 2 (VBG) to pin 1 (VOUT) - as defined in Table 1 of the datasheet. No external resistors or trim components are needed. All other pins remain unconnected except for required supply (pin 5, +VS), ground (pin 4, COMMON), and optional STROBE (pin 3). This pin-strapping method leverages internal laser-trimmed resistor networks, ensuring repeatable, stable +5.00V output with ±10mV initial tolerance and 15ppm/°C tempco across the full -55°C to +125°C range.

Does the MX584TH support shutdown functionality, and how is it implemented?

Yes, the MX584TH supports active-low shutdown via its STROBE input (pin 3). Pulling pin 3 to ≤200mV disables the output and reduces quiescent current from 750µA to ~100µA. The input is compatible with open-collector NPN transistors or open-drain FETs, requiring ≥500µA sink capability and ≤5µA leakage. During shutdown, the output is actively pulled to 0V - not high-impedance - and residual voltage is limited to ≤0.7V if transient sinking is required. This feature is fully characterized and supported across the -55°C to +125°C range for MX584TH.

Can the MX584TH be used as a negative reference, and what are the limitations?

Yes, the MX584TH can be configured as a two-terminal negative reference (e.g., -5V or -2.5V) by connecting +VS and VOUT to analog ground and biasing COMMON through a resistor to a negative supply - as shown in Figure 9 of the datasheet. However, this configuration restricts the operating temperature range to -55°C to +85°C (not full -55°C to +125°C), requires load/bias current maintenance between 1mA and 5mA, and exhibits slightly higher output error (~2mV above positive-mode value). It is validated for use with CMOS ADCs like the MX7574 but not recommended for precision DAC referencing in military-temperature applications.

Is the MX584TH still recommended for new designs, and what is Maxim's position on its lifecycle?

No - Maxim explicitly states "Not Recommended for New Designs" for the MX584TH due to discontinuation of the legacy wafer process used in its manufacture. While the datasheet remains available for existing users and the part is still procurable through authorized channels including Aetrix Electronics, Maxim advises evaluating replacements such as the MAX6126 series or industry second-sources. MX584TH is maintained for legacy system support, with no planned obsolescence date published, but long-term availability depends on remaining foundry inventory and channel stock. Designers should consult Maxim's technical support before initiating new projects.