MAX1154AEUE+T - 10-Ch 10-Bit System Monitor ADC | Maxim Integrated
MPN: MAX1154AEUE+T ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $9.65 | $9.65 |
| 10 | $8.7 | $87.00 |
| 100 | $7.3 | $730.00 |
| 500 | $6.2 | $3,100.00 |
| 1,000 | $5.1 | $5,100.00 |
| 2,500 | $4.45 | $11,125.00 |
MAX1154AEUE+T Overview
A system monitor IC (also called a hardware monitor, supervisory ADC, or housekeeping ADC) integrates multi-channel analog-to-digital conversion, temperature sensing, and supply-voltage monitoring into a single chip, reducing external component count versus a discrete ADC plus dedicated temperature sensor design. The MAX1153/MAX1154 family belongs to the Maxim system-monitor hierarchy: SAR ADC -> multi-channel ADC -> system monitor -> supervisory IC -> power management IC. This category of ICs is widely used to monitor processor core voltage, battery stacks, and PCB hot-spots in single-rail systems.
Key features of the MAX1154AEUE+T include AutoShutdown (reducing supply current to 190 uA at 2 ksps and to less than 8 uA at 50 sps), an SPI/QSPI/MICROWIRE-compatible serial interface, a dedicated ALERT output for out-of-threshold interrupts, and an on-chip 2.5V reference. Internal channels measure the device's own die temperature and VDD, while the eight external analog inputs accept voltages up to VREF.
The architecture combines a 10-bit successive-approximation register (SAR) ADC, a 10-channel analog multiplexer, a bandgap temperature sensor, and an internal reference. AutoShutdown mode and burst-mode sampling enable unattended, low-duty-cycle monitoring that is ideal for battery-powered equipment. The 10-bit resolution provides 0.1% full-scale measurement steps, sufficient for system telemetry but not for high-precision instrumentation.
Typical applications include multichannel system monitoring in telecom equipment, temperature and voltage monitoring in industrial controllers, fan-speed and thermal monitoring in servers, battery-cell voltage monitoring in portable devices, and hardware housekeeping functions in embedded designs. The wide 2.7V-5.25V supply range supports both 3.3V and 5V digital rails.
When designing with the MAX1154AEUE+T, ensure that the analog input voltage on any external channel stays within 0V to VREF, and place a 0.1 uF decoupling capacitor close to the VDD pin. Configure the ALERT threshold via the SMBus-compatible threshold registers so that the host is notified when any monitored channel exceeds its window.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found on the manufacturer datasheet alone. Specifications below are sourced from Maxim's MAX1153/MAX1154 datasheet and current distributor listings as of 2026-10-14.
Drop-in alternatives for MAX1154AEUE+T — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with MAX1154AEUE+T (same form factor and footprint) — differing in Package, Resolution, Operating Temperature, Number of Channels, Interface.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
MAX1153BEUE+T
✅ Drop-In📋 Reference alternative (not in catalog)
MAX1139MEEE+T
✅ Drop-In✓ In Stock
$3.9 / Unit
View Datasheet →MAX1145BEAP+
✅ Drop-In✓ In Stock
$5.95 / Unit
View Datasheet →MAX1147BEUP+T
✅ Drop-In✓ In Stock
$8.7 / Unit
View Datasheet →MAX1036EKA+G002
✅ Drop-In✓ In Stock
$2.24 / Unit
View Datasheet →MAX11164ETC+T
✅ Drop-In✓ In Stock
$5.54 / Unit
View Datasheet →MAX1154AEUE+T Maximum Ratings & Electrical Characteristics
| Function | 10-bit system-monitor ADC with internal temperature sensor and VDD monitor |
| Number of Channels | 10 (8 external analog + 2 internal: temperature, VDD) |
| Resolution | 10 bit |
| Sampling Rate | 94 ksps (auto mode, single channel) |
| Analog Supply Voltage | 2.7 V to 5.25 V |
| Analog Input Range | 0 V to VREF (single-ended) |
| Internal Reference Voltage | 2.5 V (typ) |
| Supply Current | 1.7 mA at 3 V (94 ksps, single channel); 190 uA at 2 ksps; < 8 uA at 50 sps (AutoShutdown) |
| Operating Power | 5 mW at 3 V / 94 ksps |
| Digital Interface | SPI / QSPI / MICROWIRE-compatible serial |
| ALERT Output | Yes (out-of-threshold interrupt) |
| Operating Temperature Range | -40 C to +85 C |
| Package | 16-pin TSSOP, 4.4 mm body width, 1.1 mm height, surface mount |
| Mounting Type | Surface Mount |
| ADC Architecture | SAR (successive approximation) |
| AutoShutdown | Yes |
| RoHS Status | Compliant |
MAX1154AEUE+T Pin Configuration
| Pin 1 | ALERT — Active-low interrupt output for out-of-threshold alerts |
| Pin 2 | AIN0 — Analog input channel 0 |
| Pin 3 | AIN1 — Analog input channel 1 |
| Pin 4 | AIN2 — Analog input channel 2 |
| Pin 5 | AIN3 — Analog input channel 3 |
| Pin 6 | AIN4 — Analog input channel 4 |
| Pin 7 | AIN5 — Analog input channel 5 |
| Pin 8 | AIN6 — Analog input channel 6 |
| Pin 9 | AIN7 — Analog input channel 7 |
| Pin 10 | AIN9 / VREF — Internal temperature / VDD monitor or external reference input |
| Pin 11 | GND — Ground |
| Pin 12 | VDD — Analog supply voltage (2.7 V to 5.25 V) |
| Pin 13 | REF — Internal 2.5 V reference (bypass with 0.1 uF) |
| Pin 14 | SCLK — Serial clock input |
| Pin 15 | DOUT — Serial data output (MISO) |
| Pin 16 | CS — Active-low chip select |
Typical Applications
MAX1154AEUE+T is suitable for 6 applications: Telecom Equipment Hardware Monitor, Industrial Controller Thermal & Voltage Monitor, Server Fan & Thermal Monitoring, Battery Cell Voltage Monitoring, Embedded System Housekeeping, Power Supply Voltage & Current Monitor.
Telecom Equipment Hardware Monitor
The MAX1154AEUE+T's 8 external analog channels and integrated ALERT interrupt make it well suited for telecom shelf and line-card housekeeping. Why this part fits: telecom equipment typically monitors multiple rails (3.3V, 5V, -48V battery return), one to four temperature zones, and fan tach signals, all within the 0-2.5V input range the MAX1154AEUE+T covers when scaled with external resistor dividers. The integrated ALERT output asserts when any channel exceeds its programmed window, allowing the host CPU to enter low-power states between interrupts. The 94 ksps sampling rate provides sufficient bandwidth for 1 Hz thermal trending and rail-voltage telemetry, while AutoShutdown below 8 uA at 50 sps keeps quiescent current negligible in always-on telecom equipment.
Recommended
Industrial Controller Thermal & Voltage Monitor
In industrial PLCs, motor controllers, and process instrumentation, the MAX1154AEUE+T provides compact multi-channel housekeeping without external ADCs or temperature sensors. Why this part fits: the 2.7V-5.25V supply range aligns with 3.3V and 5V industrial backplanes, and the -40 C to +85 C operating temperature range covers typical industrial enclosure environments. The 10-bit resolution gives 0.1% full-scale measurement steps, sufficient for rail monitoring (where accuracy is typically +/- 2% budget) and thermal-cutoff detection. Its 8 external analog inputs accept 0-2.5V signals directly, or higher voltages through external resistor dividers, enabling monitoring of up to 8 sensor/rail nodes per IC.
Recommended
Server Fan & Thermal Monitoring
The MAX1154AEUE+T integrates temperature sensing and multi-channel analog monitoring in a single 16-pin TSSOP, ideal for server baseboard management. Why this part fits: the internal die-temperature sensor provides one IC junction-temperature channel, and the 8 external channels can monitor CPU socket thermistor outputs, VR hot-spots, ambient sensors, and fan tach signals through simple interface circuits. The SPI-compatible serial interface connects directly to a BMC (baseboard management controller) without glue logic. AutoShutdown below 8 uA at 50 sps is negligible compared to server standby power budgets, while 94 ksps burst-mode sampling supports fault-event capture.
Recommended
Battery Cell Voltage Monitoring
Portable and battery-backed equipment benefits from the MAX1154AEUE+T's low operating current and multi-channel ADC. Why this part fits: a single IC can monitor up to 8 lithium-ion cells through external resistor dividers and the 0-2.5V analog input range, while the internal temperature sensor reports pack-level thermal conditions. AutoShutdown reduces supply current to less than 8 uA at 50 sps, extending battery life during idle periods. The ALERT pin asserts when any cell exceeds its high/low voltage window, triggering protection circuitry or host shutdown without continuous polling.
Recommended
Embedded System Housekeeping
Embedded SBCs and SOMs require compact power, voltage, and thermal telemetry without loading the main CPU. Why this part fits: the MAX1154AEUE+T offloads 8-channel analog monitoring, internal temperature sensing, and VDD measurement to a dedicated IC, freeing the host CPU from A/D housekeeping routines. The SPI/QSPI/MICROWIRE interface is compatible with virtually any microcontroller or SoC, and the TSSOP-16 footprint is small enough to fit beneath SoC heatsinks. The ALERT interrupt pin drives a host GPIO to wake the CPU only when a fault is detected, optimizing power consumption in battery-powered IoT and edge devices.
Recommended
Power Supply Voltage & Current Monitor
Multi-rail SMPS and DC-DC converters use the MAX1154AEUE+T to provide closed-loop digital telemetry. Why this part fits: 8 external analog channels accept current-shunt amplifier outputs (after scaling to 0-2.5V) for multi-rail current sensing, and the internal channel pair provides supply-rail and temperature monitoring simultaneously. The 10-bit resolution and 94 ksps sampling rate support both steady-state telemetry and transient event capture. The ALERT output can trigger system warnings or shutdown when any monitored rail exceeds its voltage or current window, enabling proactive fault management in distributed power architectures.
Recommended
Recommended Products Summary
Engineering reference data for MAX1154AEUE+T — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MAX1153BEUE+T | MAX1139MEEE+T | MAX1145BEAP+ | MAX1147BEUP+T | MAX1036EKA+G002 | MAX11164ETC+T |
|---|---|---|---|---|---|---|---|
| Brand | Maxim Integrated | Maxim Integrated | Maxim Integrated | Maxim Integrated | Maxim Integrated | Maxim Integrated | Maxim Integrated |
| Package | 16-pin TSSOP (UE) | 16-pin TSSOP (UE) | 16-pin SSOP (QME) | 20-pin SSOP | 20-pin TSSOP | 8-pin SOT-23 | 12-pin TDFN |
| Resolution | 10 bit | 10 bit | 12 bit | 12 bit | 12 bit | 12 bit | 16 bit |
| Number of Channels | 10 (8 ext + 2 int) | 8 (6 ext + 2 int) | 16 (14 ext + 2 int) | 10 (8 ext + 2 int) | 10 (8 ext + 2 int) | 1 | 1 |
| Sampling Rate | 94 ksps | 94 ksps | 200 ksps | 140 ksps | 140 ksps | 225 ksps | 500 ksps |
| Supply Voltage Range | 2.7 V to 5.25 V | 2.7 V to 5.25 V | 2.7 V to 5.25 V | 4.75 V to 5.25 V | 2.7 V to 5.25 V | 2.7 V to 5.25 V | 2.7 V to 5.25 V |
| Internal Temperature Sensor | Yes | Yes | Yes | Yes | Yes | No | No |
| ALERT Output | Yes | Yes | No | Yes | Yes | No | No |
| AutoShutdown | Yes (< 8 uA at 50 sps) | Yes | Yes | No | No | Yes | No |
| Serial Interface | SPI / QSPI / MICROWIRE | SPI / QSPI / MICROWIRE | SPI / QSPI / MICROWIRE | SPI / QSPI / MICROWIRE | SPI / QSPI / MICROWIRE | SPI | SPI |
Key Differentiators
- Integrated temperature + VDD monitor + ALERT interrupt in a single IC (vs MAX1036EKA+G002)
- More external channels than MAX1153 in the same footprint (vs MAX1153BEUE+T)
- 10-bit resolution + ALERT vs higher resolution but no ALERT (vs MAX1139MEEE+T)
Design Notes
The MAX1154AEUE+T operates from a single 2.7 V to 5.25 V analog supply; place a 0.1 uF ceramic decoupling capacitor as close as possible to the VDD pin and a 10 uF bulk capacitor at the supply rail. The internal 2.5 V reference (REF pin) requires its own 0.1 uF bypass capacitor; do not connect external loads to the REF pin. AutoShutdown mode reduces supply current to less than 8 uA at 50 sps but requires SCLK toggling to wake the part.
Route analog input traces away from switching nodes and digital clocks. Use a ground plane directly beneath the IC and keep the analog ground return path short. When scaling external voltages above 2.5 V with resistor dividers, use 1% or better resistors and add 1 nF X7R bypass across each divider to attenuate high-frequency noise. The TSSOP-16 exposed thermal pad (where present) should be soldered to the ground plane to improve thermal dissipation.
Do not apply voltages exceeding VDD or going below GND on any AIN pin - this can latch up the IC. The internal VDD monitor channel measures VDD relative to GND, not relative to the internal reference. When reading the internal temperature channel, account for the offset specified in the datasheet - on-die temperature typically runs +20 C to +40 C above PCB ambient. Always initiate a software reset after power-up before configuring threshold registers, or spurious ALERT events may occur.
Compliance Information
RoHS compliant per Maxim Integrated product page. Not AEC-Q100 qualified - automotive applications should use MAX1154AEUE+T only with explicit customer-side qualification. Lead-free TSSOP-16 package; halogen-free status not explicitly stated in retrieved data and recorded as 'unknown'.
