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Analog Devices MAX9108EUD+ — Analog & Data Acquisition
Analog Devices

MAX9108EUD+ Quad Comparator, 25 ns, 14-TSSOP - Maxim

MPNMAX9108EUD+
End of Life

Maxim MAX9108EUD+, quad general-purpose comparator, 25 ns propagation delay, 2 mV hysteresis, TTL output, 4.5 V to 5.5 V supply, -40°C to 85°C, 14-TSSOP.

$5.33Ref. price · indicative, final on quote
MAX9108EUD+ datasheet
Packaging14-TSSOP (0.173", 4.40mm Width)
StockContact for availability
MOQ1 pcs
  • 100% new & originalTraceable channels only — no refurbs, no pulls, no remarked parts.
  • Date & lot codes on quoteStated per line before you commit; label photos on request.
  • MSL-compliant ESD packingMoisture-sealed bags with indicator cards; reels photo-verified.
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Specifications

MAX9108EUD+ Technical Specifications
ParameterValue
TypeGeneral Purpose
Output typeTTL
Mounting typeSurface Mount
Voltage - input offset1.6mV @ 5V
Voltage - supply, single (Dual (±))4.5V ~ 5.5V
Current - quiescent700µA
Current - input bias0.125µA @ 5V
Operating temperature-40°C ~ 85°C
PackageTube
Hysteresis2mV
Case14-TSSOP (0.173\", 4.40mm Width)
CMRR, PSRR86.02dB CMRR, 86.02dB PSRR
Number of elements4
Propagation delay25ns

Product details

Temperature range and package — where it goes

Rated for -40°C to 85°C operating temperature, this part fits industrial control cabinets, outdoor telecom enclosures, and factory-floor sensor interfaces. The 14-TSSOP package (0.173" body width, 4.40 mm) is a common footprint shared with many logic and comparator parts, so board layout reuse across variants is straightforward. Surface-mount only — no through-hole option.

Sourcing and lifecycle — still active, no LTB clock ticking

The MAX9108EUD+ carries an Active product status and ROHS3 compliance. No last-time-buy notice, no NRND flag. For a BOM line that needs a quad comparator in a 14-TSSOP, this part is a straight drop-in without worrying about a forced redesign next year.

Frequently asked questions

Is MAX9108EUD+ a direct replacement for LM339?

No — the MAX9108EUD+ is not a direct pin-for-pin replacement for the LM339. The LM339 uses a 14-DIP or 14-SOIC package with open-collector outputs, while the MAX9108EUD+ uses a 14-TSSOP package with TTL push-pull outputs. The 25 ns propagation delay of the MAX9108EUD+ is significantly faster than the LM339's typical 300 ns, so the electrical characteristics differ enough that a board redesign would be required. The LM339 also operates from a wider supply range (2 V to 36 V or ±18 V) versus the MAX9108EUD+'s 4.5 V to 5.5 V single-supply range.

What is the propagation delay of MAX9108EUD+?

The maximum propagation delay is 25 ns. That is the time from input crossing the threshold to the TTL output changing state. For high-speed comparator applications like overcurrent detection or zero-crossing, this delay is short enough to avoid adding significant latency to the control loop.

What is the closest pin-compatible alternative to MAX9108EUD+?

Within the same Maxim family, the MAX9109 is a similar quad comparator with the same 14-TSSOP footprint and TTL outputs, but it offers a wider supply range (2.7 V to 5.5 V). The MAX9108EUD+ is the 4.5 V to 5.5 V variant. For a direct pin-compatible swap without changing the board layout, the MAX9109EUD+ is the closest alternative, though the supply voltage minimum differs. No other manufacturer's quad comparator in 14-TSSOP with TTL outputs and 25 ns delay is a guaranteed pin-compatible second source without layout verification.