MAX985EUK+ Maxim Integrated Integrated Circuit (SOT23 (5-Pin)) In Stock
MAX985EUK+ is a Maxim single push-pull comparator in SOT-23-5 for 2.7 V to 5.5 V operation. Delivers 75 ns response with CMOS-compatible push-pull output. From stock with worldwide shipping.
- Manufacturer
- Maxim Integrated
- Package
- SOT23 (5-Pin)
- Pin Count
- 5
- Lifecycle
- ACTIVE
- Datasheet
- MAX985EUK+ Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Push-pull output swings rail-to-rail, driving 3.3 V and 5 V CMOS logic directly without external pull-up resistors
- Wide 2.7 V to 5.5 V supply range covers single-cell lithium, 3.3 V regulated, and 5 V system supplies
- Fast 75 ns propagation delay enables responsive threshold detection in level-crossing, window, and timing circuits
- Ultra-low 0.01 µA maximum input bias current minimizes error on high-impedance sensor and resistor-divider inputs
Applications
The MAX985EUK+ is suited for threshold detection, zero-crossing detection, and logic-level interfacing in battery-powered and single-supply systems operating from 2.7 V to 5.5 V. Its push-pull output directly drives 3.3 V and 5 V CMOS inputs for microcontroller interrupt pins, ADC trigger lines, and window comparator circuits without external pull-up components. The miniature SOT-23-5 package makes it ideal for portable instruments, IoT sensor nodes, and space-constrained industrial electronics.
Specifications
| Manufacturer Package Code | 5-SOT_23-N/A |
| Date Of Intro | 2002-04-01 |
| YTEOL | 8.5 |
| Amplifier Type | COMPARATOR |
| Average Bias Current-Max (IIB) | 0.01 µA |
| Bias Current-Max (IIB) @25C | 0.01 µA |
| Input Offset Voltage-Max | 7000 µV |
| JESD-30 Code | R-PDSO-G5 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Output Type | PUSH-PULL |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSOP5/6,.11,37 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, LOW PROFILE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Response Time-Nom | 300ns |
| Supply Current-Max | 0.024mA |
| Supply Voltage Limit-Max | 6V |
| Supply Voltage-Nom (Vsup) | 2.7V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) - annealed |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.95mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | SOT23 (5-Pin) |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
| Country of Origin | Japan, Mainland China, Malaysia, Philippines, Singapore, South Korea, Taiwan, Thailand, USA |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
Why does MAX985EUK+ eliminate the external pull-up resistor typically needed with open-drain comparators?
MAX985EUK+ uses a push-pull output that actively drives both logic high (up to 5.5 V) and logic low (near ground), unlike open-drain comparators that can only pull the output low. This provides faster 75 ns output transitions, reduces board component count, and directly interfaces with 3.3 V and 5 V CMOS inputs without any external components.
How accurately can MAX985EUK+ detect a threshold set by a 100 kΩ resistor divider network?
With a maximum input bias current of 0.01 µA, MAX985EUK+ introduces less than 1 mV of offset error across a 100 kΩ source impedance. Adding the 7 mV maximum input offset voltage gives a worst-case total threshold uncertainty under 8 mV, making it well suited for precision threshold detection on 3.3 V or 5 V reference divider networks.
How does the 2.7 V minimum supply of MAX985EUK+ benefit designs powered by alkaline or lithium batteries?
MAX985EUK+ operates from 2.7 V to 5.5 V, covering the full discharge range of 3 V lithium coin cells and 2-cell alkaline packs that sag from 3 V to 2.7 V. This eliminates the need for a boost regulator, allowing the comparator to operate reliably from battery power through to near end-of-life voltage in portable IoT sensors and industrial wireless nodes.
Related Guides
1206 100 uF MLCC Design Guide for Compact Bulk Decoupling
Design guidance for applying CL31A107MQHNNNE and related 1206 MLCCs in compact bulk decoupling networks.
Jul 3, 2026
0402 10 nF MLCC Design Guide for High-Speed Decoupling
Practical design guidance for using CL05B103KB5NNNC and related 0402 MLCCs in high-speed decoupling networks.
Jul 3, 2026
CL31A107MQHNNNE 1206 100 uF MLCC Selection Guide
How to choose CL31A107MQHNNNE and related 1206 MLCCs for low-voltage bulk capacitance and regulator stability.
Jul 2, 2026
CL05B103KB5NNNC 0402 10 nF X7R MLCC Selection Guide
How to choose CL05B103KB5NNNC and related 0402 MLCCs for bypassing, filtering, voltage derating, and sourcing.
Jul 2, 2026
Why Buy from FindMyChip
About Maxim Integrated
Maxim Integrated is a leading electronic component manufacturer. FindMyChip sources Maxim Integrated ICs directly from authorized China distributors, offering competitive pricing and reliable stock.
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“We've been using FindMyChip for 2 years. Pricing is consistently 20-30% below Mouser/DigiKey for volume orders.”