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
What are the key features of MAX985EUK+?
- 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
What is MAX985EUK+ used for?
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.
What are the specifications of MAX985EUK+?
| 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 |
Where can I find the MAX985EUK+ datasheet?
MAX985EUK+ Datasheet DownloadOfficial datasheet from Maxim Integrated
What are equivalent replacements for MAX985EUK+?
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.
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